Dual Mode Waste Heat Scavenging System for Unmanned Aerial Vehicles

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-11-C-0148
Agency Tracking Number: N103-208-0208
Amount: $79,914.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solitcitation Year: 2010
Solitcitation Topic Code: N103-208
Solitcitation Number: 2010.3
Small Business Information
Aurora Flight Sciences Corporation
9950 Wakeman Drive, Manassas, VA, -
Duns: 604717165
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 James Sisco
 Propulsion Engineer
 (617) 500-4835
 jsisco@aurora.aero
Business Contact
 Scott Hart
Title: Financial Analyst
Phone: (617) 500-0536
Email: shart@aurora.aero
Research Institution
 Stub
Abstract
In a typical unmanned aerial vehicle a significant proportion of the propulsion system power output is converted to electrical power to operate payload and avionics hardware. The removal or significant reduction of the growing electric power generation load from the engine could lead to extended mission endurance by reducing the fuel burned for electrical power production, and by reducing the mass of both primary and backup power conversion/energy storage systems. We propose to assess the feasibility of reducing engine power generation loads and increasing system endurance by scavenging waste heat from vehicle subsystems using thermoelectric generator technology. An innovative solution is proposed whereby energy harvested from both the high temperature heat source of the engine exhaust stream is combined with energy harvested from the comparatively low temperatures of the liquid streams used to cool the onboard electronics and potentially engine components. To efficiently combine these multiple power sources, power management electronics are used to process scavenged electrical power and manage temperatures in the liquid coolant streams to maintain the electronic equipment operation within prescribed limits. The innovation proposed here is a conformable system architecture that is both modular and scalable for use over an extended range of unmanned system applications.

* information listed above is at the time of submission.

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