NASA SBIR 2016 Solicitation


PROPOSAL NUMBER: 16-1 A1.02-8366
SUBTOPIC TITLE: Quiet Performance - Propulsion Noise Reduction Technology
PROPOSAL TITLE: Continuous-Scan Phased Array Measurement Methods for Turbofan Engine Acoustic Testing

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
ATA Engineering, Inc.
13290 Evening Creek Drive South, Suite 250
San Diego, CA 92128 - 4695
(858) 480-2000

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Dr. Parthiv Shah
13290 Evening Creek Drive South, Suite 250
San Diego, CA 92128 - 4695
(858) 480-2101

CORPORATE/BUSINESS OFFICIAL (Name, E-mail, Mail Address, City/State/Zip, Phone)
Mr. Joshua Davis
13290 Evening Creek Drive South, Suite 250
San Diego, CA 92128 - 4695
(858) 480-2028

Estimated Technology Readiness Level (TRL) at beginning and end of contract:
Begin: 4
End: 5

Technology Available (TAV) Subtopics
Quiet Performance - Propulsion Noise Reduction Technology is a Technology Available (TAV) subtopic that includes NASA Intellectual Property (IP). Do you plan to use the NASA IP under the award?

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
ATA Engineering, Inc., (ATA) proposes an SBIR project to advance the technology readiness level (TRL) of a method for measuring phased array acoustic data for complex distributed noise sources using continuously moving (referred to here as continuous-scan, or CS) microphones in conjunction with state-of-the-art phase-referencing techniques. The proposed project aims to develop two novel modules to the existing suite of tools for CS acoustic measurements: (1) A continuous-scan beamforming (CSBF) tool for arrays located in the mid to far field to perform source diagnostics in low-SNR wind tunnel environments., and (2) An azimuthal modal decomposition tool for near-field arrays having partial azimuthal coverage, enabling acoustical holography without full source enclosure. The first module will enable small-aperture beamforming (BF) arrays to adopt the CS method, resulting in reduced maximum sidelobe levels and higher-quality BF images that approach the theoretical limits associated with the theory. The second module will enable CS near-field arrays that avoid the requirement for full coverage, greatly simplifying the array coverage requirements and making acoustical holography systems more practical in testing facilities. In Phase I, ATA will demonstrate feasibility of the methods through application to existing acoustic measurement data sets. In Phase II, the methods will be optimized and rigorously validated through experiments using small-scale turbofan engine models. Ultimately, we will transition these methods to NASA and industry stakeholders for adoption in relevant facilities.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
As part of Strategic Thrust 3: Ultra-Efficient Commercial Vehicles, in the Strategic Implementation Plan issued by the Aeronautics Research Mission Directorate (ARMD), NASA establishes noise improvement margins (relative to the FAA Stage 4 noise limit) of −32 dB, −42 dB, and −52 dB, for N+1, N+2, and N+3 future aircraft technology generations, respectively. The plan also calls for "tools and technologies to reduce turbofan-thrust-specific fuel consumption, propulsion noise, and emissions." By improving the quality and efficiency of acoustic measurements taken in wind tunnels, the proposed measurement and modeling technology will provide NASA with new capabilities to lead the development of next-generation propulsion systems, airframes, and efficiency technologies. Multiple NASA research centers operate wind tunnels that support aeronautical acoustics research, including the Unitary Plan Wind Tunnels at NASA Ames, the 14' x 22' subsonic tunnel at NASA LaRC, and the 9' x 15' LSWT and five others at NASA GRC.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Community noise exposure continues to be a significant issue near airports, confining growth and impacting quality of life and health of those affected. To counteract growing exposure, ever more stringent noise standards are expected to be implemented by regulatory agencies in the certification of aircraft. These standards are predicated on the discovery of new technologies aimed at reducing aircraft and engine noise. Further noise performance improvements will likely be asymptotic, with incremental improvements resulting in only modest noise reduction. Thus, innovative measurement technologies to better identify and diagnose noise sources within the aircraft and engine are necessary, particularly for the subscale-size test articles and low-SNR environments of wind tunnel testing. ATA believes there is a significant market opportunity for the enhanced CS toolset through adoption at engine manufacturers, airframers, and international aviation authorities. Beyond aviation, CS tools and methods will be applicable to wind turbine, automotive, and industrial noise.

TECHNOLOGY TAXONOMY MAPPING (NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.)
Air Transportation & Safety
Analytical Methods
Atmospheric Propulsion
Models & Simulations (see also Testing & Evaluation)
Simulation & Modeling
Vehicles (see also Autonomous Systems)

Form Generated on 04-26-16 15:14