| PHYSICAL SCIENCES, INC.
20 New England Business Center Andover, MA 01810 | |
| Phone:
PI: Topic#: |
(978) 689-0003
Dr. Steven J. Davis AF 01-001 Awarded: 27APR01 |
| Title: | Advanced Concepts for the Chemical Oxygen-Iodine Laser |
| Abstract: | Physical Sciences Inc. (PSI) proposes to investigate and demonstrate the feasibility of two enabling technologies to radically improve the chemical efficiency of chemical oxygen iodine lasers (COILs). We propose to examine three potential methods for producing flows of atomic iodine that would reduce or eliminate the amount of singlet delta oxygen required to dissociate the molecular iodine in current COIL devices. PSI proposes to use existing state-of-the-art facilities and techniques to investigate two photolysis methods and one chemical method for dissociating the iodine. One of the photolysis methods has the potential for allowing premixing of the iodine source with the singlet oxygen stream. This has the potential for reducing the complexity or even eliminating mixing nozzles in COIL. PSI also proposes to test the feasibility of a high power microwave driven plasma jet (MIDJet) as a source of excited singlet oxygen. This aspect of our Phase I effort will complement current programs elsewhere that are attempting to develop an electric COIL. A successful program would demonstrate the feasibility of dramatically improving the performance of COIL devices. This could offer new important missions for the Air Force. New commercial applications of COIL devices that would become logistically and financially much more attractive include: laser welding, hole drilling, nuclear power plant dismantling, and gas/oil well drilling. |
| SCIENTIFIC APPLICATIONS & RESEARCH
15261 Connector Lane Huntington Beach, CA 92649 | |
| Phone:
PI: Topic#: |
(714) 903-1000
Mr. John Dering AF 01-001 Awarded: 25APR01 |
| Title: | Advanced Concepts for the Chemical Oxygen-Iodine Laser |
| Abstract: | System weight and volume are critical aspects that determine the Airborne Laser (ABL) platform operating altitude, total laser run time and aircraft refueling requirements. While COIL technology has made significant strides in system efficiency increases, an overall system weight reduction is needed. SARA, Inc. proposes a highly, innovative RF transmission line plasma technique to pre-dissociate molecular Iodine into free Iodine atoms before interaction with Singlet Delta Oxygen. Singlet Delta Oxygen is the energy storage and pump species that collisionally excites atomic iodine to the upper lasing state for the high energy 1.3mm laser airborne weapon output. Ideally one singlet delta collision results in one excited iodine atom and thus laser photon. In addition, the singlet delta flow must also first perform the requisite prior step of collisional disso-ciation of the molecular iodine (I2) into two iodine atoms (I-atoms). The dissociation process is not efficient with 2 to 3 singlet delta species required to dissociate one iodine molecule. SARA's RF plasma dissociation technique will allow more Singlet Delta Oxygen to be used to collisionaly excite the iodine, increasing the laser power output and reducing the number of laser modules required for the ABL mission. This technique will result in an increase in laser power output over the existing ABL design for the same BHP and reactant consumption rates. The power increase would allow for a decrease in ABL system weight by reducing the total number of laser module building blocks required. All other COIL applications would benefit by the increased utilization of singlet delta oxygen, providing a potential expanding market. |
| STI OPTRONICS
2755 Northup Way Bellevue, WA 98004 | |
| Phone:
PI: Topic#: |
(425) 827-0460
Dr. William Thayer, III AF 01-001 Awarded: 27APR01 |
| Title: | Singlet Oxygen Generator Design For Advanced COIL With Water Vapor Control |
| Abstract: | Chemical oxygen iodine lasers are efficient, scalable, and have proven ability in generating weapons class laser power. To support the future high power COIL programs, technology improvements must be realized to more easily meet the operational requirements, such as for the ABL EDM phase. In particular the SOG performance with mixed base BHP must be augmented to allow operation through a wider molarity range and at higher BHP temperature to reduce magazine size and weight. Innovative methods for improving the COIL efficiency by increasing singlet oxygen output, reducing singlet oxygen losses, removing water vapor, and reducing liquid carryover from the SOG will further improve high power COIL performance. The proposed Phase I program will build on the knowledge gained at STI to evaluate several innovative concepts and design an optimized water vapor trap, spray separator, and sidewall liquid control configuration that will eliminate carryover and maximize the SOG performance. Using the SOG development code developed by STI, we will investigate the design trade between two candidate WVC fluids and the geometry changes required to package the system. Additionally, the Phase II program will be developed with the aim of proof of principal experiments to verify the design concepts. COIL is an attractive option for an industrial laser due to short wavelength and ability to be transmitted by fiber optic. Some potential industrial applications are shipbuilding, automotive manufacturing, heavy machinery manufacturing, tasks requiring underwater cutting or welding, and there may be useful applications in the oil and gas industry. It is possible to envision a single high-power COIL feeding many fibers for industrial cutting/welding/processing application. Fiber delivered underwater applications appear very promising; it may be possible to use a high power, fiber delivered COIL beam to perform cutting/welding underwater and thus save the high cost of dry-docking a ship in need of repair. However, the primary market for COIL is defense related. Consequently STI has concentrated its efforts in the development of high performance SOGs primarily for defense applications, advancing the state of the art to the benefit of both military and commercial applications. |
| TEMPEST TECHNOLOGIES LLC
2916 Stanford Avenue Marina del Rey, CA 90292 | |
| Phone:
PI: Topic#: |
(310) 574-4993
Dr. Ben Fitzpatrick AF 01-002 Awarded: 25APR01 |
| Title: | Wavefront Sensing for High Scintillation Environments |
| Abstract: | In this proposal we consider the incorporation of image processing techniques into phase reconstruction algorithms to improve performance in systems such as the AirBorne Laser (ABL) tactical missile defense system. Based on a combination of mathematical techniques for nonparametric branch cut identification and adaptive filtering theory, our methods promise to provide greatly enhanced phase estimation. Scintillation, the turbulence-induced fluctuation of image intensities, is widely regarded as a major problem for adaptive optics systems. The methods we propose herein provide the potential to mitigate significantly the effects of scintillation, thus enhancing adaptive optics performance. We also propose innovative control concepts for deformable mirror actuation. Collaborating with scientists and engineers at UCLA, MZA, AFRL, and Boeing-SVS, we will use wave propagation simulations data and data collected in tests at Lincoln Laboratory's ACL facility to score the performance of these algorithms. Continuing our partnership with Boeing-SVS, the leader in systems engineering for optical systems for ABL and other weapon systems, will allow us to leverage the results obtained in this effort into hardware systems in a most efficient and cost-effective manner. Potential commercial applications will be of a military nature, as the effort proposed herein is heavily focused toward advancing ABL system capabilities. Other phase-based imaging systems, such as SAR and MRI, will benefit, however, from improvements derived from this research. |
| TREX ENTERPRISES CORP.
10455 Pacific Center Court San Diego, CA 92121 | |
| Phone:
PI: Topic#: |
(858) 646-5479
Dr. Mikhail Belen'kii AF 01-002 Awarded: 12APR01 |
| Title: | Wavefront Sensing for High Scintillation Environments |
| Abstract: | Strong scintillation in long horizontal path laser beam projection systems, such as ABL, corrupts the phase difference measurements made with a Hartmann sensor by causing non-uniform illumination of the sub-apertures, hence, non-uniform noise effects across the wave front sensor. Strong scintillation can also cause branch points in the beacon field making the wave front reconstruction and correction processes difficult because they lack the continuous phase map required in most wave front correction schemes. We propose a shearing interferometer wavefront sensor and a new wavefront reconstruction algorithm insensitive to the branch points. Our new approach will provide accurate phase recovery in a high scintillation environment. Phase I develops a simulation code and reconstruction algorithm and evaluates the performance of this innovative technique. We expect a detailed simulation code for the static shearing interferometer and a new phase reconstruction algorithm will be developed and the feasibility of the proposed approach will be evaluated for various ABL propagation scenarios in high scintillation environment. This effort heralds development of a new wavefront sensing capability which will enable expansion of ABL missions for longer range and lower elevation operations and forms a basis for commercial wavefront sensors for laser communication systems. The proposed scintillation resistant wavefront sensor and reconstructor have both military and commercial applications. Besides the ABL, a static shearing interferometer can also be used in Relay Mirror, remote sensing and atmospheric imaging programs. A shearing interferometer wavefront sensor proposed here may also result in significant improvements in the performance of active ground-based satellite imaging systems. The proposed approach can also lead to the development of a commercial wavefront sensor. This sensor would be used in commercial low-order AO systems to mitigate atmospheric effects in high data rate optical communication channels. A shearing interferometer developed under this program can be a key element in this system. |
| MZA ASSOC. CORP.
2021 Girard SE, Suite 150 Albuquerque, NM 87106 | |
| Phone:
PI: Topic#: |
(505) 245-9970
Mr. Stephen C. Coy AF 01-003 Awarded: 12APR01 |
| Title: | Multiconjugate Adaptive Optics for Distributed Turbulence |
| Abstract: | Conventional aperture plane phase-only adaptive optics (AO) is becoming a mature technology. We have had decades of experience with up-looking applications, where most of the turbulence is close to the aperture, and in recent years there has been substantial progress in AO for near-horizontal paths, with distributed turbulence, largely motivated by the Airborne Laser (ABL) Program. Progress continues, but the practical limits of conventional AO technology for deep turbulence applications are beginning to become apparent. These relate to scintillation, high order anisoplanatism, phase branch points, and the use uncooperative beacons for tracking and higher order correction under conditions where these effects are prevalent. Conventional AO does not address scintillation or high order anisoplanatism at all, and branch points present serious practical difficulties even when perfect sensing is assumed. Multiconjugate (MCAO adaptive optics is a less developed technology involving significant technical challenges, but there are reasons to believe it may be able to ameliorate these problems, yielding improved performance over a wide range of conditions, and, more importantly, yielding acceptable performance in regimes where conventional AO fails. For the ABL this would translate into a longer maximum range, and killing missiles that otherwise would have gotten past.It is anticipated that a multiple deformable mirror adaptive optics system successfully demonstrated under this research, with economical considerations folded in, would have both commercial and military applications. The military applications include the ABL and follow-on systems, Relay Mirror, remote sensing, and any DoD programs utilizing adaptive optics in high scintillation. Other applications include airborne imaging (military and commercial), especially for reconnaissance and surveillance systems that must image through turbulent boundary layers. The commercial market includes such areas as astronomy (retrofitting astronomical sites), laser communication and power beaming. It is expected that the contractor will focus on Phase I designs that would maximize both the commercial potential and the military potential. |
| OPTICAL PHYSICS CO.
4505 Las Virgenes Road, Suite 217 Calabasas, CA 91302 | |
| Phone:
PI: Topic#: |
(818) 871-1841
Dr. Richard Hutchin AF 01-003 Awarded: 07MAR01 |
| Title: | 3D WAVEFRONT CONTROL |
| Abstract: | A new control concept is proposed which can significantly enhance the performance of the Airborne Laser beam control. This control process allows high quality wavefront information to be obtained even using extended sources of many theta-noughts in size. In simulation, a simple version increased high-order strehl 1.67X and on-axis irradiance by 5.7X over a 120 km horizontal path with a 1mx1m extended source. Besides the major benefit to the ABL program, there is another commercial application. The Last-Mile Optical Link involves high bandwidth laser communication over near-ground horizontal paths up to 5 kilometers long. With DWDM (Dense Wavelength Division Multiplexing), the need is to image a first fiber source onto a second fiber receiver several kilometers away. Optical efficiency requires a high strehl to avoid fades and resulting data loss. This sensor will greatly increase reliability. |
| METROLASER, INC.
18010 Skypark Circle, Suite 100 Irvine, CA 92614 | |
| Phone:
PI: Topic#: |
(949) 553-0688
Dr. Vladimir Markov AF 01-004 Awarded: 01MAR01 |
| Title: | Laser System for Active Tracking of a Launch Vehicle and Satellite |
| Abstract: | In this Phase I proposal, we outline a plan to develop a novel phase-conjugate laser system capable of locking and tracking remote objects. The proposed system uses a pulsed laser with an intra-cavity four-wave mixing configuration. In this proposal, we outline the operational principles of the system, showing how velocity and position of the target can be accurately measured. During Phase I, we will perform additional theoretical analysis, design a laboratory system, and demonstrate the key aspects of the tracking system. During Phase II we will scale the technology up for field demonstration.Optical systems can provide precise information on an object's location and velocity. The proposed system can significantly enhance the accuracy of existing radar-based tracking stations. Because of the increased measurement accuracy, measurements of satellites can be performed less frequently and with fewer tracking stations, thus saving on operational costs. In addition, the system could find applications in aircraft and missile tracking. |
| PC PHOTONICS
64 Windward Way Waterford, CT 06385 | |
| Phone:
PI: Topic#: |
(860) 443-4356
Dr. George G. King AF 01-005 Awarded: 06APR01 |
| Title: | Key Enabling Components for High-Power Fiber Lasers |
| Abstract: | Three key enabling components are critically needed for advancing high power fiber lasers. They are the double clad, multicore fibers; high brightness diode laser pumps; and optical coupling between the pump and the fiber. This proposal is focused on the most neglected component, the coupling between the pump and fiber laser. Material damage thresholds eliminate end pumping as a viable way to achieve multiple kilowatt outputs from a double clad fiber laser system. Side pumping the entire surface of a double clad system has not shown promise due to excessive losses that are artifacts inherent in the design. The aim of this proposal is to develop a reliable optical coupling technique by distributing the pump power at various strategic locations along the length of the double clad fiber without compromising the fiber integrity. The design of our proposed coupling scheme takes into account the effective absorption of the fiber cores along the propagation length of the fiber. The pump power from a multimode fiber is injected into the inner cladding at an angle exceeding the critical angle. With this approach it may be possible to couple several kilowatts of pump power into the fiber without exceeding the material damage threshold. This proposal describes an approach and presents the necessary steps to demonstrate the practicality of our proposed coupling scheme. If the results of this Phase I prove successful a Phase II will be proposed to develop a prototype which will be delivered to the Air Force for demonstration. High power diode-pumped multicore fiber lasers can be very competitive in the market place as compared to high power diode-pumped solid-state lasers and C02 lasers presently employed by automotive, aerospace and ship-building industries for precision drilling, high-speed cutting and welding of metals and composition materials. |
| COHERENT TECHNOLOGIES, INC.
655 Aspen Ridge Drive Lafayette, CO 80026 | |
| Phone:
PI: Topic#: |
(303) 604-2000
Dr. AnnMarie L. Oien AF 01-006 Awarded: 02APR01 |
| Title: | Tunable, Narrow Linewidth Laser for HF/DF Laser Metrology |
| Abstract: | Development of advanced Hydrogen Fluoride/Deuterium Fluoride (HF/DF) laser technology can be hampered by delayed knowledge of laser component performance. HF mirror optical performance metrology is currently costly and time consuming, requiring laser component delivery to an HF laser site, and operation of another HF laser to reach relevant wavelengths. Coherent Technologies, Inc (CTI) proposes a portable, turn-key solid state laser source providing over 1W narrow linewidth output, tunable to major HF laser lines (2.64 - 2.91 mm). A direct laser source is chosen instead of a nonlinear optical device because of the superior intensity stability and output power available - desirable in a metrology system. The proposed system could be transported to coating vendors for immediate diagnostic testing of mirror absorption and scattering at a range of HF laser lines. This will enhance the efficiency of the manufacturing process. Other possible applications include HF laser alignment and spatially resolved gain probing/imaging for decisive optimization of HF/DF laser performance. Phase I will consist of constructing a tunable, single-frequency laser, characterizing a HF/DF mirror sample, and designing a prototype brassboard HF mirror metrology system. The proposed work builds upon CTI's established background in tunable mid-IR laser sources and ruggedized single-frequency laser systems.A compact solid state tunable narrow linewidth source in the 2-3 mm wavelength region will accelerate HF/DF laser component metrology and alignment. Commercial applications include remote sensing, medical instrumentation, and as a pump source for mid-infrared nonlinear devices. |
| PHYSICAL SCIENCES, INC.
20 New England Business Center Andover, MA 01810 | |
| Phone:
PI: Topic#: |
(978) 689-0003
Dr. Steven J. Davis AF 01-006 Awarded: 04APR01 |
| Title: | Advanced Diagnostics and Analytic Tools for HF/DF Laser Technology |
| Abstract: | Physical Sciences Inc. (PSI) proposes to develop two sensitive diagnostics for HF chemical laser development:. a) a novel patented, multispectral imager; Adaptive Infrared Imaging Spectroradiometer (AIRIS) and b) Planar Laser Induced Fluorescence (PLIF). In Phase I we will design, assemble, characterize, and field test an AIRIS device to demonstrate its capability to provide a sensitive diagnostic for the spatial and spectral content of HF lasers and profiles of HF(v,J) concentration and gain. We also propose to develop a design for a PLIF instrument that would be delivered in Phase II. This device would be used by HF researchers to design and test advanced mixing nozzles for future HF lasers. These two diagnostic tools would provide developers of high power chemical lasers with valuable data including spatial maps of populations of HF(v,J) levels, stability of HF output lines, and detailed maps of mixing. A successful Phase I and II program will result in two diagnostic devices that will be delivered to the Air Force. These tools will provide valuable design and verification data for development of the next generation of high power HF lasers. Follow on opportunities include diagnostics for ground based spaceborne lasers. |
| QEI TECHNOLOGIES, INC.
2715 S. St Paul Denver, CO 80210 | |
| Phone:
PI: Topic#: |
(303) 807-6051
Dr. John A. Bognar AF 01-007 Awarded: 18APR01 |
| Title: | High-Performance Atmospheric Measurement System Using Kites and Blimps |
| Abstract: | The study of atmospheric turbulence and wind structure presents unique demands not currently met by commercially available atmospheric measurement systems. Remote sensors suffer from poor spatial resolution and often imprecise calibrations. In-situ sensors are either mounted on towers, which do not reach altitudes of interest, or on aircraft, which introduce a variety of artifacts into the data. Kites and blimps fill a niche between these existing platforms by providing a quiet platform from which to make measurements from the surface up to the free troposphere. The development of kites and blimps for atmospheric research requires the development of the profiling system itself and sensors suited to making measurements from these unique platforms. QEI Technologies proposes to develop a portable, user-friendly profiling system that will use a combination of high-performance kites and blimps to carry sensors through the boundary layer and into the free troposphere. An associated measurement package will be developed that provides three-dimensional wind data and interfaces to additional sensors. Phase I work will focus on the measurement package. Phase II work will see final refinement of the measurement package, the integration of this package with the profiling system, and extensive field tests of the combined system. The kite/blimp profiling system and associated wind measurement system will be useful to numerous government agencies and universities engaged in studies of fundamental wind and turbulence behavior, flux measurements, and transport and diffusion phenomena. |
| COHERENT TECHNOLOGIES, INC.
655 Aspen Ridge Drive Lafayette, CO 80026 | |
| Phone:
PI: Topic#: |
(303) 604-2000
Dr. Timothy Carrig AF 01-008 Awarded: 23MAR01 |
| Title: | High-efficiency, frequency-agile MWIR-LWIR laser source for DIAL |
| Abstract: | The proliferation of chemical, biological and nuclear weapons among rogue nations and terrorist organizations necessitates that the US develop the means of detecting the development of these weapons before they can be deployed against US and allied military assets and civilian targets. The US government has demonstrated that Differential Absorption Lidar (DIAL) is one means of stand-off, covert, remote detection of chemical signatures characteristic of the development of these weapons. However, current DIAL transmitters lack the laser power and overall electrical efficiency needed for deployment onboard unmanned aerial vehicles or reconnaissance satellites. This program aims to demonstrate an innovative all solid-state laser transmitter suitable for incorporation into next-generation mobile DIAL sensors. A compact, high-efficiency, diode-pumped laser that pumps a single-stage optical parametric oscillator capable of simultaneous output in both the MWIR and LWIR spectral regions is proposed. The transmitter will be capable of electronically accessing any wavelength of interest and of scanning among wavelengths at a 10-50 kHz rate. In Phase I we will demonstrate that the proposed transmitter can meet DIAL wavelength, tuning and linewidth requirements. A detailed transmitter design will be developed. Additionally, risk reduction experiments will be conducted to demonstrate key elements of the design.Frequency-agile laser transmitters are needed for commercial DIAL sensors suitable for industrial chemical detection, pollution monitoring, and leak detection. These lasers are also useful for scientific applications such as high-resolution optical spectroscopy. High electrical efficiency infrared lasers are needed for variety of applications including wind-sensing, free-space optical communications, search and rescue beacons, infrared countermeasures and surgery. |
| Q PEAK, INC.
135 South Road Bedford, MA 01730 | |
| Phone:
PI: Topic#: |
(781) 275-9535
Dr. Yelena Isyanova AF 01-008 Awarded: 09APR01 |
| Title: | Single-frequency, high-energy, tunable solid state IR source |
| Abstract: | Q-Peak, Inc. proposes to develop a single-mode, rapidly tunable, high-energy, high-average-power, all-solid-state IR source suitable for use as a direct-detection or heterodyne DIAL system transmitter. The source is based on the combination of a 1 micron pulsed pump laser and optical parametric oscillators (OPO). The pump source, designed as a oscillator-amplifier (MOPA) system, comprises a compact, diode-pumped, 500 Hz pulse-repetition-rate, single-frequency, Q-switched Nd:YLF laser and diode-pumped multipass Yb:S-FAP power amplifier. The MOPA system will pump a tandem OPO system consisting of a rapidly-angle-tuned, injection-seeded, 1.5-3.6 micron KTA OPO, and a pump-tuned, 3-5 micron and 8-12 micron CdSe OPO pumped by the KTA OPO idler. In the Phase I effort we will demonstrate an IR-source consisting of (1) an efficient, 500-kHz repetition rate, 1-micron source generating 15-mJ nsec pulses; (2) a tunable KTA OPO with a combined signal and idler average power of 2.5 W at 500 Hz repetition rate. Phase II development will emphasize technology that is ultimately field-suitable and efficient in terms of prime-power use, wavelength agility and single-mode operation.The proposed IR Laser Source will enhance selectivity and sensitivity of active, laser-based chemical effluent detection. In the commercial sector, the applications include wide-area pollution monitoring, process control, and general scientific investigations. |
| MISSION RESEARCH CORP.
Post Office Drawer 719, 735 State Street Santa Barbara, CA 93102 | |
| Phone:
PI: Topic#: |
(937) 429-9261
Dr. Errol English AF 01-009 Awarded: 20APR01 |
| Title: | Antenna Back-lobe and Side-lobe Suppression using Tapered Periodic Surfaces |
| Abstract: | Mission Research Corporation will design, fabricate, and test microwave antennas with very low side and back lobes using an innovative technology known as Tapered Periodic Surfaces (TPS). A TPS can be used as an edge treatment to drastically reduce EM field diffraction. A TPS is similar to a tapered R-Card, except that it is reactive rather than resistive. The TPS has many advantages over a tapered R-Card. These include; frequency compensation, ease of fabrication, polarization diversity, and high power robustness. In Phase I, several basic TPS structures (flat panels) will be designed, fabricated, and tested. These basic TPS designs will then be incorporated into a design of a simple demonstration antenna (TBD, but possibly a pyramidal or conical horn). Laboratory tests will be performed on this antenna to demonstrate the low side lobe effectiveness of the TPS treatment. Also in Phase I, a preliminary performance specification, as well as a conceptual design, will be generated for an advanced ultra-low side/back lobe antenna. This antenna will be designed, fabricated, and tested in Phase II.The satellite telecommunications industry is currently expanding at an incredible rate. With vast increases in the number of both satellites and ground terminals, interference between adjacent systems in a crowded envrionment is a serious problem. Ultra low side lobe antennas will be desperately needed. In parallel with this SBIR program, MRC will maintain a relationship with major non-military telecommunications companies in order to address their need for low side lobe antennas. |
| FARR RESEARCH, INC.
614 Paseo Del Mar NE Albuquerque, NM 87123 | |
| Phone:
PI: Topic#: |
(505) 293-3886
Dr. Everett G. Farr AF 01-010 Awarded: 20APR01 |
| Title: | An Inflatable Membrane Impulse Radiating Antenna |
| Abstract: | Ultra-Wideband (UWB) antennas with broad bandwidth and large apertures could be of great use in a variety of space-based applications, including radar, communications, and surveillance. The challenge is to deploy a large lightweight UWB antenna that is stowable in a small volume, and that will be resistant to the harsh space environment. To overcome these challenges we propose an inflatable impulse radiating antenna fabricated from a thin membrane such as mylar or kapton. The proposed design is called a Membrane Impulse Radiating Antenna, or Membrane IRA. The antenna is inflated during deployment, and then the membrane may be hardened by epoxy or coated with a thin layer of foam that becomes rigid. In this manner, the antenna will be hardened against puncture by small space-borne particles. The Membrane IRA is a blend of two well-established foundation technologies. The first of these is the Collapsible Impulse Radiating Antenna (CIRA), which has an umbrella-like design and is now a commercial product. The second foundation technology is inflatable large-aperture reflectors fabricated from membranes such as mylar or kapton. The combination of these two technologies will lead to a space-capable deployable large-aperture antenna that is operational over two decades of bandwidth. During Phase I we will build and test a scale model of a Membrane IRA, with diameter of around four feet. Testing will include both a mechanical deployment demonstration and a measurement of the antenna pattern. We will also investigate methods of structurally hardening the membrane after deployment, so puncture becomes less of a problem. Finally, we will investigate replacing cables in the feed design with printed circuit transmission line.This research will lead to a new design for an inflatable Membrane Impulse Radiating Antenna. This device will have very broad bandwidth, will be lightweight, and will fit into a small volume on a satellite before deployment. A scale model approximately four feet in diameter will be built during Phase I. |
| LGARDE, INC.
15181 Woodlawn Avenue Tustin, CA 92780 | |
| Phone:
PI: Topic#: |
(714) 259-0771
Dr. Arthur L. Palisoc AF 01-010 Awarded: 27APR01 |
| Title: | Space-Based Ultra-Wideband Antennas |
| Abstract: | Past efforts have demonstrated how inflatable parabolic reflectors could be made for space antennas. More recent laboratory studies have shown how a broadband antenna can result by coupling parabolic reflectors to specially designed impedance-matching support arms. We propose to combine the two technologies to create an inflatable space antenna made from the inflatable parabolic reflector and its inflatable support arms. Our goal is a lightweight broadband space-deployable antenna suitable as an impulse radar antenna or a general broadband antenna. Our approach is to draw on design options we have proven in past inflatable-structures programs for decoys, struts, antennas, and membrane supports. We will examine Conical Support and Tubular Support concepts for the arms/feed. Impedance of the various feed components will be matched to that of the antenna to minimize energy loss from the beam, using concepts proven on these past programs to vary the effective surface conductivity and geometry. An analytical model will be produced so that antenna design parameters can be varied and the resultant effects on gain and mass calculated. The best feed concept will be selected for bench tests to validate the model. Our team has unmatched experience in inflatable space structures and antenna design and test.We are developing, in conjunction with Applied EM, a complete antenna. It can therefore be offered as a subsystem to any mission that needs an IRA. However, the antenna is much more than an IRA. It is a broadband device and therefore capable of working at many different frequencies that might be of interest. Thus it is the first antenna that can be offered as a product applicable to most space projects. Therefore it offers the real possiblity of mass producing an inexpensive but effective space antenna. |
| G A TYLER ASSOC., INC.
1341 S. Sunkist St. Anaheim, CA 92806 | |
| Phone:
PI: Topic#: |
(714) 772-7668
Dr. Terry Brennan AF 01-011 Awarded: 16MAR01 |
| Title: | Scintillation Resistant Wave-Front Sensors for Strong-Turbulence Adaptive Optics |
| Abstract: | Wavefront sensing in high scintillation environments is degraded in conventional sensors by a coupling, in the measurement, between phase and irradiance variations. An evaluation of this effect, and its impact on performance of systems, such as ABL, is proposed. An innovative wavefront sensor design has been proposed which mitigates this effect by pixel-level processing of the data. The design exhibits other advantageous features such as ease of implementation, elimination of the unobservable waffle mode, potential noise gain reduction, and measurements which permit both linear and non-linear (branch-cut) phase reconstruction. This design will be fully evaluated, analytically and in simulation, and fine-tuned as necessary. This proposed sensor design will improve phase gradient measurement precision in high scintillation, resulting in increased Strehl ratio performance of a conventional least-squares reconstruction. It will also support the use of branch-cut phase reconstruction. |
| AEROASTRO, INC.
520 Huntmar Park Drive Herndon, VA 20170 | |
| Phone:
PI: Topic#: |
(228) 466-9863
Mr. Paul Gloyer AF 01-012 Awarded: 26APR01 |
| Title: | Lightweight Structural Aerobrake for Orbital Positioning and Maneuvering |
| Abstract: | The ability to maneuver, change orbits, and rapidly deploy spacecraft is a key requirement for the space user community. However, large and bulky propulsion systems with a significant mass of fuel on board often limit the maneuverability and capabilities of space vehicles. AeroAstro is developing aerobraking concepts and structures that use the Earth's atmosphere for braking and steering, significantly reducing the amount of propellant and even the type of propulsion systems required on spacecraft. Very lightweight aerobraking structures can enable significant reduction in mass coupled with an increase in capability. Using aerobraking, AeroAstro is developing with commercial funding the Small Payload ORbit Transfer (SPORTT) system to enable small payloads to use low-cost secondary launch opportunities and still reach custom orbits. A lightweight aerobrake structural design is key to the SPORT concept. To fit within constrained volumes, aerobraking structural members must be tightly packaged and lightweight. Structural booms must deploy to approximately ten times their length to produce a seventy-fold increase in profile area. AeroAstro proposes to investigate various applications and structural technologies for the aerobrake design. TThe use of aerobraking provides spacecraft and vehicles like SPORT with a much greater orbit transfer capability than that achievable with direct propulsion. Aerobraking reduces the ?V requirement for a GTO to LEO orbit transfer from a costly 2,340 m/s down to an affordable 378 m/s, an amazing 84% reduction in ?V requirement. While the GTO to LEO case is extreme, other transfer missions, such as GEO to LEO and LEO to Intercept, each reveal a 50% savings in the ?V requirement. This will result in a massive reduction in launch costs for small satellites. The aerobraking technology payoff is significant, with commercial and government utility forseen not only for the SPORT vehicle, but also in a variety of other applications. Potential applications for the aerobraking technology include population of microsatellite constellations, situational pre-positioning, and space asset resupply. There are numerous potential customers, both government and commercial, for the technology that AeroAstro is proposing to develop. The first customer for this aerobraking technology will likely be a customer for AeroAstro's SPORT vehicle. A commercial customer is already funding a feasibility study for the first SPORT, which could be launched in 2003-2004. |
| MODULAR DEVICES, INC.
1 Roned Road Shirley, NY 11967 | |
| Phone:
PI: Topic#: |
(631) 345-3100
Mr. Mark B. Graham AF 01-014 Awarded: 24APR01 |
| Title: | Lightweight DC/DC Power System |
| Abstract: | This opportunity relates to the ability to construct a flexible power system that is capable of operating from one power source or power multiple sources. The system would be composed of multiple lower power DC-DC converter units, which can be paralleled to expand power outputs in discrete multiples, sharing power loads relatively uniformly. This flexible power system would be comprised of small modules, each handling a small fraction of the overall power.The availability of a flexible power converter architecture could allow faster power bus development and allow stocking of a small number of common part types for multiple applications. This can result in large cost savings due to amortization of space related lot costs such as element qualification and radiation tests. |
| NVE CORP.(FORMERLY NONVOLATILE ELECTRON)
11409 Valley View Road Eden Prairie, MN 55344 | |
| Phone:
PI: Topic#: |
(952) 996-1610
Mr. John K. Myers AF 01-015 Awarded: 23APR01 |
| Title: | High Speed Digital Bus Isolator for Space Applications |
| Abstract: | NVE will produce and package IC's that monolithically integrate their existing high speed GMR signal isolator silicon into a prototype 800 Mbits/sec. 8 bit transceiver. Commercial high speed data bus interfaces between subsystems such as IEEE 1284 and IEEE 1194 have not been galvanically isolated due to performance, size and cost constraints. These interfaces would benefit from the inclusion of monolithically integrated high performance galvanic isolation barriers. The proposed device will eliminate noise, cross talk, and ground bounce and allow highly parallel long distance bus architectures. Products will find wide application in aerospace, military and commercial applications which require both high speed transceiver circuitry and galvanic signal isolation. NVE has successfully integrated IsoLoopr galvanic monolithic isolation technology into single and dual channel transceiver silicon and will use this foundation to design/build isolated 8 channel 74245 type transceiver circuits and design 8 channel 74574 type latch solutions. This technology simultaneously meets requirements for high speed, low power, noise immunity and design flexibility required for high performance data busses. The Phase II program develops 3.3 volt radiation tolerant 4 or 8 channel die for production worthy 8 bit latch/transceiver designs. Products decrease component footprint, weight and power for other systems.This project will prove the feasibility of large scale implementation of NVE's Isoloop technology for use in computer bus interface applications. External interfaces to computers often must interface through a multi-channel parallel bus structure that today cannot be practically isolated. These non isolated bus interfaces often cause internal damage to computer systems due to grounding problems. This specific commercial market potential is estimated to exceed $50M. If the project is successful, it could lead to a product that can solve this technological problem and expand and create new markets. |
| INTEGRATED MAGNETOELECTRONICS
1214 Oxford St. Berkeley, CA 94709 | |
| Phone:
PI: Topic#: |
(510) 841-3585
Mr. Richard Spitzer, Ph.D AF 01-016 Awarded: 23APR01 |
| Title: | Field Programmable System-On-A-Chip |
| Abstract: | The proposer (IME) is developing general-purpose electronics based on giant magnetoresistance (GMR). Underlying IME's all-metal electronics is the transpinnor, a novel device that allows amplification and either logic or linear characteristics. IME has designed and fabricated several transpinnor-based logic gates and simple linear circuits; intial tests have been completed, and a second development cycle is in progress. The phase I project objective is to demonstrate the feasability of an all-metal field programmable SOC. Transpinnors will be used for nonvolatile switches, logic gates, and an FPGA. The functional elements of the FPSOC will be designed, modeled and simulated, as will the FPSOC as a whole. The transpinnor will be made of the same materials as IME's nonvolatile GMR RAM. A successful project will provide the foundation for a variety of all-metal reconfigurable Systems-On-A-Chip.A specific FPSOC will provide a nonvolatile radiation-hardened switching system for routing telecommunications signals over a wide variety of networks, e.g., internet, phone lines, communications satellites, etc.. The individual elements will provide building blocks for other FPSOC's. |
| MISSION RESEARCH CORP.
735 State Street Santa Barbara, CA 93101 | |
| Phone:
PI: Topic#: |
(505) 768-7641
Mr. Robert M. Turfler AF 01-017 Awarded: 13APR01 |
| Title: | A Monolithic Advanced Instrument Controller Employing Mixed Technology System-On-A-Chip |
| Abstract: | Mission Research Corporation (MRC) proposes to design and develop a mixed signal system-on-a-chip based on the Advanced Instrument Controller (AIC) multi-chip module, previously developed by MRC. Specifically, we will design a monolithic, radiation hardened version of the AIC for the Peregrine fully depleted CMOS/SOS process. As a minimum, the monolithic AIC will include an 8031 equivalent microcontroller, a digital port expander, a memory controller with EDAC (error detection and correction), a 12 bit analog to digital converter, a 32-to-1 analog multiplexer, a voltage reference, and eight, 10 bit digital to analog converters. Depending on the results of our proposed Phase 1 investigation, it may also include on-chip RAM, ROM, and EEPROM.A radiation hardened, monolithic Advanced Instrument Controller will significantly reduce the size, weight, and power as well as cost for point of use microcontrollers in space and missile systems. It will also have applications in the commercial sectors for autonomous controllers of sensors and other instruments. |
| PHOTOBIT CORP.
135 N. Los Robles Ave., 7th Fl Pasadena, CA 91101 | |
| Phone:
PI: Topic#: |
(626)6832200
Dr. Eric Fossum AF 01-018 Awarded: 23APR01 |
| Title: | Radiation Tolerant System-On-A-Chip for Space |
| Abstract: | The purpose of this work is to identify/resolve deterrent factors to implement radiation tolerant image sensor system-on-a-chip (SOC). Thisis done by integrating radiation tolerant image sensor blocks on space system-on-a-chip (SOC) ICs that is expected to total dose up to 1Mrad(Si). Photobit has recently completed an SBIR project that concluded that radiation hard CMOS APS image sensors are feasible. The combination of employing the physical design techniques of enclosed geometry and guard rings, and a deep sub-micron standard CMOS fabrication process provides the path to radiation hard CMOS APS image sensors SOC IC's. Along the way, it is necessary to develop and prove other system level blocks operating as an integral part of an imager SOC such as digital control blocks, data storage and communication blocks, etc.. In Phase I of this SBIR project, these blocks will be developed, simulated, and integrated with already developed CMOS APS image sensor blocks to construct radiation hard CMOS APS image sensor system-on-a-chip (SOC) for space applications. Final design will be made ready for submission for fabrication.Radiation hard CMOS APS image sensor system-on-a-chip (SOC) ICs will pave the way for low cost, radiation hard, low-power, miniature camera solutions for space and earth based applications. CMOS APS image sensors perform as well as CCDs, with the added benefits of lower power (10 to 100 times less) and integration of electronics (enabling miniaturization and SOC solutions). This allows them to not only compete in the same markets as CCDs, but also provide opportunities to expand the existing image sensor market. The proposed radiation hard image sensor and the technical advances associated with its development are extremely important for space applications (DoD, NASA, and commercial satellites) and ground-based based radiation harsh environment systems such as nuclear power plants, particle accelerators, and radiation test facilities. |
| ADVANCED SOLUTIONS, INC.
6901 S. Pierce St, Suite 301 Littleton, CO 80128 | |
| Phone:
PI: Topic#: |
(720) 218-7584
Mr. Allen W. Bucher AF 01-019 Awarded: 28MAR01 |
| Title: | Low-Cost/Robust Nanosatellite Spacecraft for Distributed, Communication Systems Constellations |
| Abstract: | Both DOD and NASA have future missions that require the launch and deployment of an increasing number of single spacecraft, as well as multi-craft constellations. The desire to minimize cost and ensure the robustness of these high value assets has given rise to the need for on-orbit inter-satellite communications that provides redundancy and fault tolerant satellite-to-satellite communications. The increased use of the Internet and wireless technologies for terrestrial based communications has sparked advancements in the robustness and reliability of hardware and software components. Using these methodologies, ASI is proposing a Satellite Constellation Internet Protocol (SCIP) for Satellite Constellation Management. ASI will develop methodologies that will allow the expansion of the current internet to space based hosts. These hosts will have the capability to communicate, exchange information, and route traffic to other nodes as if they were terrestrial based. The SCIP will leverage current internet technologies and enhance them to handle the space environment and increased node-to-node latency.Robust Satellite to Satellite communications. High Bandwidth communications to areas without high bandwidth infrastructure. Satellite constellation management methodologies. Low cost, low risk, high fault tolerant communications networks in the sky. |
| ALAMEDA APPLIED SCIENCES CORP.
2235 Polvorosa Ave, Suite 230 San Leandro, CA 94577 | |
| Phone:
PI: Topic#: |
(510) 483-4156
Dr. Niansheng Qi AF 01-019 Awarded: 06APR01 |
| Title: | Vacuum Arc Nano Thrusters for Nanosatellite Spacecraft Constellations |
| Abstract: | Alameda Applied Sciences Corporation proposes to develop a new type of nano-thruster electric engine for highly parallel, distributed constellations of nano-satellites and other space propulsion applications. A key feature of the proposed Phase-I is the use of an Inductive Energy Store (IES) driver to power the vacuum arc nano-thruster, which has a mass of <60 g while operating at >90% PPU efficiency from 1-10 W. The province of missions for such a thruster includes attitude control of satellite constellations of Class I microspacecraft (~10 kg, ~10 W). This thruster requires <100 V to operate, vs. the ~2 kV for the PPT. The thruster might be scaled to >=100 W, to provide both attitude control and slew maneuvers with the same engine. In Phase I, AASC will fabricate a prototype thruster with a 1-10 W inductive PPU, using NASA and/or Air Force space qualified components where possible. We will measure plasma streaming velocity and mass utilization rates for many elements or alloys. We will conduct direct thrust and efficiency measurements at Edwards AFB. In Phase II, we will develop a flight qualified engineering model by addressing other key issues such as the lifetime of the thruster, environmental factors and mission requirements.The primary application of the specific thruster to be developed in the proposed work will be for Class I micro-spacecraft, ~10 kg. However, beyond this immediate application, the thruster could find use for larger or smaller spacecraft, with further development. |
| ONTARIO ENGINEERING INTERNATIONAL
3333 Harrision Street, Unit #6 Riverside, CA 92503 | |
| Phone:
PI: Topic#: |
(909) 283-5971
Mr. Russell Abbott AF 01-020 Awarded: 20APR01 |
| Title: | Opto-Interconnection System |
| Abstract: | A fiber optic device connector will enable the development of a new generation in optical computer technology. By developing an optical interconnect that connects to the transmit and detector elements mounted in the device will improve system performance through increased data transmission rates, lower power consumption, opto-isolation of all I/O and a enabling of the single point ground philosophy. Current fiber optic systems use discrete devices to covert the light pulses from the fiber optic cable into electrical signals. These signals are then conducted to the next device using a printed wiring board to high-count I/O packages. These signals are then demultiplexed down to a lower data rate required by the lower speed, low power technologies. As a consequence the I/O increases to maintain the data rate. I/O power is a significant contributor to the overall power consumption of the IC. By integrating the transmitter, detector and fiber optic cable connection into the device package the device I/O pin count can be reduced. This allows a significant reduction in the device power requirements that are needed to drive the I/O and an increase in the data transfer rates by not having to leave the device package.These efforts will offer major savings on device power consumption, inherent radiation hardness, increased reliability through elimination of solder joints, increased immunity from electrical noise and crosstalk. |
| MISSION RESEARCH CORP.
735 State Street Santa Barbara, CA 93101 | |
| Phone:
PI: Topic#: |
(505) 768-7788
Mr. Daniel King AF 01-021 Awarded: 13APR01 |
| Title: | Enhanced Hardened By Design (HBD) EDA Environment |
| Abstract: | Mission Research Corporation (MRC) is proposing the enhancement of the Hardened by Design concepts and MRC Libraries to address emerging radiation issues for Single Event Transient, Neutron Induced Upsets, and Dose Rate Hardness through a hierarchical design process. The existing libraries already incorporate design techniques to address Total Ionizing Dose, Single Event Latchup, and Single Event Upsets. Further, MRC proposes the integration of the MRC Hardened by Design, deep submicron cell libraries into the Synopsys (TM) design environment. The approach will address foundry independent fabrication techniques for radiation hardened electronics. Specifically, we will enhance the scalable 0.35 and 0.25 micron, hardened by design (HBD) cell library to support the radiation hardening of ASICs fabricated in commercial silicon foundries, but exhibiting total dose hardness in excess of 300 Krad(Si), single event effects immunity, and dose rate hardness in excess of 1x10^9 rad(Si)/s. The improved performance and radiation hardness will be demonstrated by using Synopsys DesignWare (TM) components.Radiation hardening techniques for foundry independent fabrication design flow for radiation hardened electronics in support of system on a chip development. The enhanced HBD libraries and design flow will enable higher performance, lower power, and lower size and weight designs for space and strategic applications. The approach will lead to more cost effective electronics designs. MRC's proven design experience and expertise will lead toward new capabilities for the space electronics design. |
| VIBRO-ACOUSTIC SCIENCES, INC.
12555 High Bluff Drive, Suite 310 San Diego, CA 92130 | |
| Phone:
PI: Topic#: |
(858) 350-0057
Dr. Bryce Gardner AF 01-022 Awarded: 27MAY01 |
| Title: | Advanced Composite Acoustic Blanket Development |
| Abstract: | In Ph.I Vibro-Acoustic Sciences will extend and apply its acoustic modeling technology to investigate an entirely new class of blanket construction - "heterogeneous construction" - as a means to achieve better low- and mid-frequency attenuation of acoustic levels in launch vehicle fairings. Candidate heterogeneous blanket concepts include Prof. C.R.Fuller's distibuted vibration absorber and NAMRL's embedded particle matrix materials. Acoustic tests will be used to validate a Blanket Design Procedure. A best "noise reduction per unit weight" blanket design will be undertaken for a selected launch vehicle fairing. The blanket will be fabricated and ground tested in an acoustics lab to prove its feasibility for full scale fairing application and evaluation in Phase II.Improving the acoustic environment in launch vehicle fairings will allow the use of more low cost COTS equipment on Air Force space flight projects and will reduce the test requirements for new flight hardware. There are also significant opportunities to apply this technology to new noise control solutions for transport vehicles, including the $20 billion automobile interiors market. |
| CFD RESEARCH CORP.
215 Wynn Dr., 5th Floor Huntsville, AL 35805 | |
| Phone:
PI: Topic#: |
(256) 726-4800
Dr. Marek Turowski AF 01-023 Awarded: 23APR01 |
| Title: | New Design Technologies for Radiation Hardened Microelectronics |
| Abstract: | Radiation-hardening by design (RHBD) allows to use available commercial fabrication lines of high performance circuits, but the radiation-hardened (rad-hard) devices and cells require larger area, higher-power consumption, and slower performance. CFDRC in collaboration with Mission Research (David Alexander) and Vanderbilt University (Ronald Schrimpf) is proposing to develop novel, radiation-hardened by design concepts, at the transistor and primitive cell level, that are spatially compact in comparison to currently used rad-hard designs. The new, innovative rad-hard circuit design technology will include: 1) An integrated computational environment to provide quantitative assistance in developing new rad-hard designs, utilizing 3D device simulations with advanced semiconductor models enhanced with radiation effects; 2) Numerical, automated optimization of primitive logic and memory cell designs (layouts) for mitigation of Single Event Effects in modern submicron CMOS technologies, including SOI; 3) Calculation of key operational parameters of the designed cells, to indicate that the designs will tolerate radiation exposure to specified levels. Special attention will be given to single event latchup (SEL) vulnerability. In Phase II, the RHBD software will be enhanced with TID phenomena, and the optimized designs of primitive logic and memory cells will be fabricated and electrically characterized to demonstrate their radiation-hardness to TID, SEL, and SEU.All federal and commercial organizations that are involved in putting vehicles into space would benefit greatly by having access to high-performance, radiation-hardened microelectronics that are readily and cost-effectively produced. DoD also has many non-space applications for radiation-hardened microelectronics. |
| JAYCOR, INC.
3394 Carmel Mountain Road San Diego, CA 92121 | |
| Phone:
PI: Topic#: |
(256) 837-9100
Mr. T. G. Bo Henderson AF 01-024 Awarded: 23APR01 |
| Title: | Direct Thermal to Electric Energy Converter |
| Abstract: | A great and pervasive need exists for new, innovative concepts for the generation of electric power in earth orbit. All US spacecraft rely on solar cells for their primary power source. The most advanced solar cells under development are at most 40% efficient. A novel technique with higher efficiency is needed to enhance mission capabilities. That novel concept is thermionic emission from microtip arrays. It is anticipated that efficiencies as high as 60% are achievable with current densities greater than 10 amps per square centimeter. This program will further develop and refine the geometry, and band/field structure of diamond microtip arrays to maximize durability, efficiency, and capacity. The goal of this program is to develop compact efficient energy conversion devices for space and ground based applications. The Phase I program will demonstrate the feasibility of this technology by a combination of lab measurements and analysis.In addition to providing an efficient power source for government and commercial satellites, efficient direct thermoelectric conversion will support many electrical generation systems including nuclear and fossil fuel power plants. The increased efficiency will allow the more economical use of renewable energy sources such as solar and geothermal. The broad temperature operating range of this technology will support many applications. |
| SYSTRAN FEDERAL CORP.
4027 Colonel Glenn Highway, Suite 210 Dayton, OH 45431 | |
| Phone:
PI: Topic#: |
(937) 429-9008
Mr. Todd Grimes AF 01-025 Awarded: 23APR01 |
| Title: | Improved Analog-to-Digital Converter Fabrication Techniques |
| Abstract: | An innovative ADC architecture known as Parallel Time Interleaved Multi-bit Feedback (PTIMF) has been invented by Prof. Ray Siferd of Wright State University and Systran Federal Corp. The PTIMF architecture offers several advantages over existing parallel Delta-Sigma ADC architectures, such as, Reduced oversampling ratios (OSR), Less hardware intensive implementation, Reduced filtering requirements, etc. In addition, the PTIMF architecture facilitates the design of ADCs with the following attributes: High Speed, High Resolution, Increased Bandwidth, and Reduced power consumption. The most beneficial feature of the PTIMF architecture is scalability and its applicability to any fabrication process. The number of channels and/or the OSR may be scaled to facilitate the required resolution (12-bit, 16-bit, 18-bit, 20-bit, 24-bit, etc.) and the bandwidth. Dr. Cerny of SN/AFRL and his colleagues have invented a new, patented process from known as "Xs-MET". Devices built using the Xs-MET process are inherently radiation hardened at > 500 Kilorads. This proposal will apply the PTIMF architecture to potentially rad-hard processes (e.g., Xs-MET) and develop ADCs for space applications. In addition, we also plan to investigate the possibility of adding "circuit elements" to the PTIMF architecture that will make the components rad-hard. ADCs designed in this SBIR program will not only have high-performance characteristics, but will also be rad-hard. Hence, they will be extremely useful for space-based applications. |
| AET, INC.
1900 S. Harbor City Blvd., Suite 115 Melbourne, FL 32901 | |
| Phone:
PI: Topic#: |
(321) 727-0328
Dr. Glenn T. Hess AF 01-026 Awarded: 23APR01 |
| Title: | Single Event Transient Soft Error Rate Prediction in Integrated Circuits |
| Abstract: | Single event transient (SET) effects on combinational logic have not been widely studied because they have been deemed less important than logic circuits until the advent of deep sub-micron technologies. These new circuits tend to be more sensitive to SET because of the higher operating speeds and higher clock rates, and the smaller transistors themselves are more sensitive to radiation. AET, Inc. is developing a methodology to analyze the SET induced soft error rate in logic circuits. The approach is to model these SET induced soft error rates as functions of the design and technology of the integrated circuit. The models will be incorporated into a software tool that will be utilized by development engineers. This tool will be complimentary to an AET tool presently in development aimed at calculating critical charge and total dose effects in integrated circuits. As a proof of concept, AET will design test structures to verify the validity of the approach and the AET software tool. Based on the results of this work, AET will predict the primary factors contributing to SET susceptibility of the test structures. Using the AET statistical analysis methodology, AET will develop a preliminary SET mitigation strategy. The primary benefit of the SET software tool will be to US Air Force advanced space systems and commercial companies that supply IC's to these systems. Commercial satellite programs as well as military systems will utilize this technology to improve system performance and lower costs. |
| MATERIALS & SYSTEMS RESEARCH, INC.
5395 West 700 South Salt Lake City, UT 84104 | |
| Phone:
PI: Topic#: |
(801) 530-4987
Dr. Tad J. Armstrong AF 01-027 Awarded: 07APR01 |
| Title: | Fabrication of Highly Conductive, BASE-Header Assemblies by a Novel Process, and Evaluation in AMTEC |
| Abstract: | This proposal by Materials and Systems Research, Inc. (MSRI) is on the fabrication of Na-beta"-alumina-containing solid electrolytes (BASE) by a novel, patented process, and evaluation of performance in an AMTEC. The process converts sintered alpha-alumina containing bodies directly into BASE. The resulting BASE is resistant to attack by moisture, unlike BASE made by a conventional process. The process is also amenable to integration of an insulating header, required for attachment to other cell components, without the necessity of using a sealing glass. The proposed approach should result in highly conductive, mechanically strong, water-resistant BASE. Minimization of the number of steps in processing, and minimization of number of components is expected to lead to significant cost savings. Higher conductance compared to BASE made by conventional processes also should lead to higher performance. In Phase I, MSRI will fabricate and characterize BASE-header assemblies, and evaluate their performance in an AMTEC.The proposed approach for the fabrication of BASE offers the following benefits over the state-of-the-art methods. The proposed method: (a) Does not require encapsulation for sintering. (b) Higher mechanical strength. (c) Is resistant to attack by moisture. (d) A glass-free alpha-Al2O3-BASE header. (e) Low cost. Potential commercial benefits include applications in AMTEC, sodium-sulfur batteries, and sensors. AMTEC has applications in satellite power, uninterrupted power supplies (UPS), and residential power. Sodium-sulfur batteries have applications in distributed power, load-leveling in the utility industry, and for transportation. |
| ARCHITECTURE TECHNOLOGY CORP.
9971 Valley View Road Eden Prairie, MN 55344 | |
| Phone:
PI: Topic#: |
(952) 829-5864
Jordan C. Bonney AF 01-028 Awarded: 06APR01 |
| Title: | Ad Hoc Routing for Nanosatellite Constellation Communications |
| Abstract: | This proposal suggests an approach to providing self-organizing network communications between the nodes comprising a nanosatellite constellation. Using the proposing firm's existing body of work on self-organizing ad hoc networks for 802.11 wireless LANs and miniaturized robotics platforms as a baseline, issues relating to ad hoc networking in a nanosatellite constellations will be identified, a candidate communication architecture will be developed, and OPNET models of a modified ad hoc routing protocol will be developed. The simulation results will be used to assess the feasibility of the approach. By applying the lessons learned from terrestrial ad hoc networks to a spaceborne environment, and by using existing routing algorithms as a baseline, a flexible communications infrastructure that enables the deployment of cooperative software on the various nodes of a nanosatellite constellation can be developed in a relatively short period of time. The commercial application of this research is a routing algorithm that can be licensed to nanosatellite communication-hardware vendors. |
| NVE CORP.(FORMERLY NONVOLATILE ELECTRON)
11409 Valley View Road Eden Prairie, MN 55344 | |
| Phone:
PI: Topic#: |
(952) 918-1151
Dr. Zhenghong Qian AF 01-029 Awarded: 23APR01 |
| Title: | High Speed Linear Spin-Valve Sensors for Analog Isolator Applications |
| Abstract: | This Small Business Innovation Research Phase I project will demonstrate two types of linear spin-valve sensors with excellent linearity and sensitivity as well as optimized bias points, and will also demonstrate the feasibility of their application in analog isolator devices. The first type of linear spin-valve sensor will be designed similarly to a spin-valve recording head. The second type of linear spin-valve sensor will be designed and fabricated using a novel approach with a free ferromagnetic (FM) layer exchange-biased with an antiferromagnetic (AF) layer. The sensor performance will be optimized by materials selection and process control as well as magnetic design. The ultimate goal in this program is to fabricate and demonstrate analog isolator devices using linear spin-valve sensors developed in Phase I. The current NVE digital isolator process will be modified into an analog isolator process for this purpose. The success of this Phase I project will provide a solid framework for the Phase II to build high speed, linear radiation-hard analog isolator devices.The linear spin-valve sensors developed in this research has immediate application in NVE's isolator technology, which will lead to the addition of the analog isolator devices into its isolator product catalog. In addition, the linear spin-valve materials can also be used in field sensors and read head devices. |
| MICROCIRC ASSOC.
102 Scholtz Plaza, No.238 Newport Beach, CA 92663 | |
| Phone:
PI: Topic#: |
(949) 548-5214
Dr. T.P. Haraszti AF 01-030 Awarded: 25APR01 |
| Title: | Radiation-Hardened Synchronous SRAM |
| Abstract: | Novel radiation-hardened synchronous pipelined |