Very Low Noise, High Efficiency Muffler Designs for Small UAVs

Award Information
Agency:
Department of Defense
Branch:
Navy
Amount:
$69,959.00
Award Year:
2002
Program:
SBIR
Phase:
Phase I
Contract:
N00178-02-C-3083
Agency Tracking Number:
N02-098-10
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Kalscott Engineering, Inc.
104 Walker Pl., Lawrence, KS, 66049
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
108339966
Principal Investigator
 Tom Sherwood
 Dir. of Engineering
 (785) 760-1371
 tssherwood@hotmail.com
Business Contact
 Tom Sherwood
Title: Dir. of Engineering
Phone: (785) 760-1371
Email: tssherwood@hotmail.com
Research Institution
N/A
Abstract
"The role of small acoustically stealthy UAVs for battlefield operations is identified. The challenges associated with noise reduction for such vehicles is described. Novel approaches to reducing the noise emanating from the engine exhaust using an advancedmuffler are presented. These include custom muffler designs, and matching of the aeroacoustic characteristics of the engine and the muffler for optimum efficiency, while reducing noise. The goal is to develop a lightweight (<100 grams), low volume (<24 cu.in. volume, with a max. feature size of 5 in.), low-cost (<$35 each) muffler that retains high efficiency, while reducing noise by 16 dB in Phase I and an extra 10 dB in Phase II. A detailed Phase I work plan is presented, covering analysis, design, build,testing and design evolution tasks. The commercial market for noise-reduction devices is rapidly expanding due to increasing noise concerns in many communities. Small mufflers can be adapted for use with small gas engines in generators, all classes ofmotor vehicles, gas-powered tools, model vehicles, and ultralights."

* information listed above is at the time of submission.

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