SITIS Archives - Topic Details
Program:  SBIR
Topic Num:  A08-196 (Army)
Title:  Inertial Measurement Unit with Distributed Packaging
Research & Technical Areas:  Electronics

Acquisition Program:  PEO Missiles and Space
 The technology within this topic is restricted under the International Traffic in Arms Regulation (ITAR), which controls the export and import of defense-related material and services. Offerors must disclose any proposed use of foreign nationals, their country of origin, and what tasks each would accomplish in the statement of work in accordance with section 3.5.b.(7) of the solicitation.
  Objective:  The goal of this effort is an inertial measurement unit (IMU) with performance equivalent to the Honeywell 1700 series IMU but packaged to meet missile warhead constraints.
  Description:  The inertial measurement unit (IMU) is a critical component in missile systems requiring lock-on after launch (Beyond Line of Sight/Non Light of Sight) capability. Critical performance characteristics include drift and environmental noise. Recent efforts have focused on micro-electro mechanical systems (MEMS) approaches. While resulting in much smaller and lighter weight packaging, these systems have yet to provide the required stability. In addition, they are susceptible to vibratory noise in the pre-launch environment.

  PHASE I: The goal of Phase I is to conduct a feasibility study on the options available to meet Honeywell 1700 class performance in a package compatible with missile warhead constraints. Approaches could include a distributed packaging approach and/or incorporation of non-MEMS based technologies such as fiber gyros or ring laser gyros. The ultimate goal is <4 cubic inches in front of the warhead, a rate bias <1 degree/hour, and power consumption <3 watts. Vibration environments around 18 g's are possible. Distributed packaging to keep the footprint in front of the warhead small and move electronics to the back is acceptable if performance is maintained. Use of GPS is prohibited for this application. The Phase I report should include an analysis of the options, recommendations for the most promising approach for Phase II and an analysis of cost, risk and expected performance.
  PHASE II: Phase II will focus on building the hardware based on the Phase I recommendations. The developed hardware will be packaged to meet environmental requirements for fielded missile systems and shall undergo testing to simulate the operational environments for both rotary and fixed wing applications. The operational environmental specifications for testing will be provided at the beginning of Phase I. Phase I should result in at least 3 units delivered to the Government as well as a final report detailing the measured performance.

  PHASE III: IMUs are used in a variety of weapons applications that would benefit from the proposed SBIR research. Commercial applications of the component technology include navigational sensors for unmanned aerial vehicles and robots and directional well drilling. The focus on Phase III will be cost reduction and optimizing the manufacturing to meet production demands for the Joint Air to Ground Missile.

  References:  1. 2. P. Renfroe and A. Wright, "Enhanced Capabilities for Legacy Missiles through Technology Insertion," PLANS 2006, San Diego, CA 25-27 Apr 06, pp 795-802.

Keywords:  inertial management unit, IMU, fiber gyro

Questions and Answers:
Q: What are the Honeywell 1700 performance specifications?
A: Honeywell 1700 performance specifications are available on the Honeywell Web site at:
Q: Additional information from TPOC for Topic A08-196:
IMU Sensors in front of the warhead, in addition to the 4 cubic inch goal, should observe a keep out zone of 3" in diameter along the centerline of a 7" diameter missile.
A: . . . response pending . . .
Q: We do not have an IMU, but have developed 4mm dia. Mems gyro measuring 0.05 deg/hr with a goal of 0.01. We are a small firm and have little access, but would be willing to partner with an IMU integrator. Can you suggest contacts?
A: I cannot provide an exhaustive list and providing a partial list could be considered giving those companies preferential treatment or the appearance of a recommendation. I would suggest an internet search on IMUs to find potential partners.

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