APU Silencing Technology Development

Award Information
Agency: Department of Defense
Branch: Army
Contract: W56HZV-11-C-0229
Agency Tracking Number: O102-EP3-2002
Amount: $99,353.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: OSD10-EP3
Solicitation Number: 2010.2
Small Business Information
47140 N Main St., Houghton, MI, 49931
DUNS: 114132066
HUBZone Owned: Y
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Steven Mattson
 Chief Engineer
 (906) 482-7535
Business Contact
 Stephen Polakowski
Title: President
Phone: (906) 482-7535
Email: stevep@glsv.com
Research Institution
Auxiliary power units (APU) offer potential to improve operational efficiency and provide significant tactical advantage for surveillance missions conducted from land vehicle platforms. Current installations have resulted in higher than acceptable noise levels, adversely impacting the ability to perform a"silent"watch. In particular, noise created by the combustion process presents a problem due to its relatively low frequency. Low frequency noise propagates efficiently through the atmosphere resulting in audible detectability at unacceptable range. Low frequency noise can be reduced using passive silencing techniques, but these devices are typically large and heavy and present objectionable integration burdens. This effort outlines activities to establish feasibility and preliminary design of an active exhaust silencer for use with an APU. The desired outcome is a compact and lightweight solution capable of reducing exterior noise to levels that enable inaudible operation at a range of 20 meters. The considerable challenge of achieving a durable solution for creating anti-noise will be addressed through a parallel path approach, with one path focused on innovative integration of COTS technology and the other focused on development of a novel noise source able to directly withstand the extreme exhaust environment.

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

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