Low Cost Lightweight Hot Gas Valve/Nozzle for Divert and Axial Thrusters

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: DASG60-02-P-0034
Agency Tracking Number: 02-0418
Amount: $69,922.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Applied Thermal Sciences
PO Box C, 1861 Main St., Sanford, ME, 04073
DUNS: 783474638
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Karl Hoose
 (207) 459-7777
Business Contact
 Paul Hurlburt
Title: Contracts Manager
Phone: (207) 459-7777
Email: phurlburt@appliedthermalsciences.co
Research Institution
"A unique hot gas valve/nozzle concept promises low cost and lightweight for divert and axial thrusters. Key requirements for divert and attitude control (DAC) systems on kinetic kill vehicles (KVV's) are lightweight, low volume and cost, high impulse withminimal power requirements. Current hot gas valves for DAC's employ exotic materials such as rhenium to prevent ablation and erosion that severely impacts the effectiveness of the overall system. However, the high cost, long lead times, and high densityof rhenium warrants further development efforts for realizing a low cost and lightweight system. The proposed concept employs a unique approach of manipulating the hot gas flow path to reduce heat transfer to the valve and nozzle material. This reductionin heat transfer allows the opportunity for lower cost and lighter weight to be utilized. In addition, the concept minimizes actuation requirements resulting in low power needs, which translates into smaller battery weight and volume on the vehicle. Theproposed concept affords the opportunity to use lower cost and lighter weight materials for proportional divert and axial thrusters for interceptor applications. This technology could be used in all types of rocket applications, including liquid, gel andsolid propulsion systems. Specific areas include thrusters for station keeping of satellites in orbit, divert and attitude control systems for interceptors (miniature KKV's) and ax

* information listed above is at the time of submission.

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