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Practical Assessment of Noise/Performance Trade for High NPR Nozzles

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
82908
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
N073-173-0208
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Aero Systems Engineering, Inc.
358 East Fillmore Avenue St. Paul, MN -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2009
Title: Practical Assessment of Noise/Performance Trade for High NPR Nozzles
Agency / Branch: DOD / NAVY
Contract: N68335-09-C-0394
Award Amount: $758,473.00
 

Abstract:

With improvements in high performance military jet aircraft engines and the increase in complexity of the exhaust systems the noise produced has become problematic. Reducing these noise levels, while maintaining overall system performance, has become the driving issue in new nozzle designs. This proposal will focus on nozzle designs of practical application that can be implemented on current high NPR engine configurations, such as chevrons (or serrations) cut into the trailing edge of the nozzle. Phase I demonstrated that noise measurement can be conducted simultaneously with performance measurement in a thrust stand using a near field microphone array. Phase will focus on demonstrating that the near field acoustic measurement can be extrapolated to the far field using acoustic holography in the forward flight environment. Near field and far field measurements will be conducted simultaneously in high quality jet noise facility to demonstrate that the extrapolation process can provide sufficient detail for design purposes. This will allow future programs to be conducted with confidence with just the near field array in the thrust stand.

Principal Investigator:

Dean Long
Principle Engineering Sci
6512201290
dlong@aerosysengr.com

Business Contact:

Peter Giese
Director, Marketing & Sal
6512201129
pgiese@aerosysengr.com
Small Business Information at Submission:

AERO SYSTEMS ENGINEERING, INC.
358 East Fillmore Avenue St. Paul, MN 55107

EIN/Tax ID: 410913117
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No