USA flag logo/image

An Official Website of the United States Government

87-33: PROPELLER WAKE INDUCED STRUCTURE-BORNE INTERIOR NOISE

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
6695
Program Year/Program:
1988 / SBIR
Agency Tracking Number:
6695
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
DYNAMIC ANALYSIS & TESTING ASSOC.
6361 Yarrow Drive, Suite A Carlsbad, CA 92009
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1988
Title: 87-33: PROPELLER WAKE INDUCED STRUCTURE-BORNE INTERIOR NOISE
Agency: NASA
Contract: N/A
Award Amount: $49,915.00
 

Abstract:

THIS PROPOSAL OUTLINES A STUDY TO ESTABLISH A UNIFIED PREDICTION MODEL FOR THE CONTRIBUTION TO AIRCRAFT INTERIOR CABIN NOISE RESULTING FROM WING MOUNTED PROPELLER, WAKE INDUCED, STRUCTURE-BORNE NOISE TRANSMITTED THROUGH THE WING. THE METHOD USES: (1) A VELOCITY DEFECT MODEL REPRESENTING THE VISCOUS WAKE BEHIND A TWISTED AND LEANED PROPFAN BLADE; (2) STANDARD ACOUSTIC SOURCE MODELING METHODS TO DESCRIBE THE WING VIBRATION AND PRESSURE LOADING PERTURBATION RESULTING FROM THE WAKE SLAPPING THE WING; AND (3) FINITE ELEMENT, ACCOUSTIC STRUCTURE INTERACTION ANALYSIS TO PREDICT THE VIBRANCY ENERGY TRANSMISSION THROUGHTHE WING STRUCTURE, EXCITATION OF THE REST OF THE AIRCRAFT STRUCTURE, AND THE RESULTING NOISE RADIATION TO THE INTERIOROF THE AIRCRAFT CABIN.

Principal Investigator:

Dr c thomas savell

Business Contact:

Small Business Information at Submission:

Dynamic Analysis & Testing
2231 Faraday Ave #103 Carlsbad, CA 92008

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