Real-Time, Maneuvering Flight Noise Prediction for Rotorcraft Flight Simulations

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CG84P
Agency Tracking Number: 104561
Amount: $99,875.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: A2.09
Solicitation Number: N/A
Small Business Information
34 Lexington Avenue, Ewing, NJ, 08618-2302
DUNS: 096857313
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Daniel Wachspress
 Principal Investigator
 (609) 538-0444
Business Contact
 Barbara Agans
Title: Business Official
Phone: (609) 538-0444
Research Institution
This proposal outlines a plan for developing new technology to provide accurate real-time noise prediction for rotorcraft in steady and maneuvering flight. Main rotor and tail rotor thickness and loading noise, including Blade-Vortex Interaction noise and Tail-Rotor Interaction noise, will be predicted with physics-based methods by enhancing a real-time lifting surface/free-vortex-wake blade aerodynamics module and coupling it to maneuvering flight acoustic prediction software modified for operation in a time-marching flight simulation environment. Also included will be methods to account for spherical spreading, atmospheric absorption, and ground effect for flat level terrain. All new software will be designed with the eventual goal of supporting both high fidelity and real-time solutions through a hierarchy of methods. Phase I will provide the development of proof of concept prototype software demonstrated for both steady and maneuvering flight. Phase I will also see an evaluation of real-time potential of the various models. Phase II will provide the development of a fully-functional, noise prediction software module with real-time and high fidelity capability designed for easy coupling with flight simulation software. Phase II will also see additional enhancements in the areas of acoustic propagation, High Speed Impulsive noise, and engine and transmission noise.

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

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