USA flag logo/image

An Official Website of the United States Government

Predictions of the Acoustic Nearfield on a Carrier Deck

Award Information

Department of Defense
Award ID:
Program Year/Program:
2010 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
NAVY 10-128
Solicitation Number:
Small Business Information
ATA Engineering, Inc
13290 Evening Creek Drive South Suite 250 San Diego, CA 92128-4695
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2010
Title: Predictions of the Acoustic Nearfield on a Carrier Deck
Agency / Branch: DOD / NAVY
Contract: N68335-10-C-0525
Award Amount: $79,680.00


The noise levels caused by the jet plumes of modern high-performance military jets are a health hazard to nearby service personnel as well as a significant fatigue load. A methodology is proposed to derive source models for supersonic jet engines which can be used to predict propagation into the near- and far-field. Proprietary experimental databases will be used to express the source models as partial fields and wavepackets. Partial fields are calculated in a way that represents as much of the total energy in as few basis functions as possible. The underlying physics are not considered, but this approach is very robust since the capture of the total energy is the goal. Wavepackets have a higher physical relevance and if a deep understanding of the physics is available, predictions of jet noise sources may be made for configurations that have not been explicitly tested. These models will be integrated into a leading commercial vibroacoustic code and the sound will be propagated using the Boundary Element Method (BEM), which can model the effects of reflecting surfaces such as the aircraft carrier deck or jet blast deflectors without the meshing difficulties or extremely high computational expense of the finite element method.

Principal Investigator:

Michael Yang
Senior Project Engineer

Business Contact:

Ronan Cunningham
Director, Business Develo
Small Business Information at Submission:

ATA Engineering, Inc
11995 El Camino Real Suite 200 San Diego, CA 92130

EIN/Tax ID: 330900801
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No