Demonstration of Cryogenic Saturated Spray Electronics Cooling

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N00174-01-C-0049
Agency Tracking Number: 01-0137
Amount: $64,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2001
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
200 Yellow Place, Pines Industrial Center, Rockledge, FL, 32955
DUNS: 175302579
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Robert Scaringe
 Sr. Mechanical Engineer
 (321) 631-3550
Business Contact
 Kathy McGraw-Davids
Title: Contract Administrator
Phone: (321) 631-3550
Research Institution
One example where new cooling systems are required immediately is high power solid state phased array microwave transmitters. Used in military and commercial applications, including radar, electronic defense systems, and satellite communication data linksthese electronically scanned antennas are more reliable and efficient than mechanically scanned designs. Prior Mainstream research has already demonstrated that our saturated spray cooling (at room temperature) has reduced the chip junction temperatureand increased microwave power output by 30% without any increase in input power! For large EW systems, this has a significant impact on total power requirements and cooling loads. This Phase I effort will experimentally demonstrate the next step inMainstream's saturated spray cooling, namely a unique cryogenic saturated spray cooling system which will further improve the heat transfer, reliability, and output capacity of high power density electronics. This Phase I effort will demonstrate that theproposed configuration has significant benefits in terms of reduced weight, compact configuration, rapid response, and increased operational flexibility. Fundamental heat transfer experiments as well as demonstrations on an actual Mafet Transmit Modulewill be performed in Phase I to clearly validate the technology. A commercial partner has been secured, and a Fast-Track Phase II is planned.This Phase I includes an extensive demonstration of the performance, reliability, and simplicity of the Mainstreamunique cryogenic saturated spray cooling before proceeding to Phase II. Mainstream is proposing much more that merely simulating a system in Phase I. Mainstream is proposing to demonstrate the benefits of saturated cryogenic spray cooling and theresulting electronic performance improvements which then occur on actual high-power density chips. This Phase I is critical because it has been designed to provide the necessary proof of concept experiments necessary to convince our defense-contractorcommercialization partner, and the DoD community of the size, reliability, and performance benefits of the proposed system. A successful Phase I will provide sufficient momentum to allow this technology to proceed. Mainstream has a long-term commercialinterest in this technology and the tremendous commercial opportunity is well understood.

* Information listed above is at the time of submission. *

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