Energy Rejection System for Very High Altitude Aircraft

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: W31P4Q-09-C-0350
Agency Tracking Number: 08SB2-0947
Amount: $98,769.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solitcitation Year: 2008
Solitcitation Topic Code: SB082-063
Solitcitation Number: 2008.2
Small Business Information
International Mezzo Technologies, Inc
7167 Florda Blvd, Baton Rouge, LA, 70806
Duns: 841519098
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jeffrey McLean
 Director of Engineering
 (225) 706-0191
 mclean@mezzotech.com
Business Contact
 Kelly Buckley
Title: Business Manager
Phone: (225) 706-0191
Email: buckley@mezzotech.com
Research Institution
N/A
Abstract
High efficiency engines that reject waste heat to the atmosphere are needed for high altitude (85,000-100,000 ft), low speed aircraft that are envisioned for DoD applications. Often, a heat exchanger is required to reject the waste heat. The challenges of heat rejection are associated with the fact that because the density of the high altitude air is low and the velocity of the aircraft is low (to reduce drag), the mass flux of the air through the heat exchanger is quite low. It is a significant design challenge to build a heat exchanger that can simultaneously handle the large volume flow rates typical of high altitude scenarios, the low available pressure drop, and the need to be compact and lightweight. Mezzo builds micro tube heat exchangers that provide excellent heat transfer/volume and heat transfer/weight ratios, low pressure drop and ease of manufacture. Mezzo will design, build, and test a heat exchanger in an environment closely simulating flight at 85,000 ft. The program will provide quantified performance metrics (heat transfer and pressure drop) that will be needed to design full scale Mezzo heat exchangers for use in full scale, complete systems.

* information listed above is at the time of submission.

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