Adaptive Drainage Slots for Acoustic Noise Attenuation

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$599,983.00
Award Year:
2011
Program:
SBIR
Phase:
Phase II
Contract:
NNX11CB65C
Award Id:
n/a
Agency Tracking Number:
094397
Solicitation Year:
2009
Solicitation Topic Code:
A2.03
Solicitation Number:
n/a
Small Business Information
OH, Dayton, OH, 45440-3638
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
130020209
Principal Investigator:
Jason Hermiller
Principal Investigator
(937) 320-1877
hermillerjm@crgrp.com
Business Contact:
Stephen Vining
Business Official
(937) 937-1877
viningsd@crgrp.net
Research Institution:
Stub




Abstract
Cornerstone Research Group, Inc. (CRG) demonstrated feasibility in the reduction of noise attributed to drainage slots in jet engine acoustic liners. This was accomplished through the development of design rules for optimum slot design and concept development of the implementation of adaptive material technologies to control slot dimensions. CRG brought thistechnology to a technology readiness level (TRL) 2 after the Phase 1 effort and will bring a TRL 4 after the Phase 2 effort. The Phase 1 effort provided simulated data for the acoustic designer to start to understand and develop preliminary models on the effects of drainage slots to the liner's acoustic impedance characteristics. This data has provided justification to pursue adaptive solutions that will counteract the adverse effects of drainage slots through adaptive means. In Phase 2, CRG will refine the design, scale up fabrication, demonstrate a full-scale operationally relevant aircraft part, and analyze manufacturing costs as part of a comprehensive Technology Insertion Plan.

* information listed above is at the time of submission.

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