NON-INTRUSIVE BOUNDARY LAYER TRANSITION FREQUENCY DETECTOR

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 16885
Amount: $49,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1991
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
1257 Lake Plaza Dr, Colorado Springs, CO, 80906
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A NON-INTRUSIVE, BOUNDARY-LAYER TRANSITION DETECTOR THAT CANINDICATE THE PRESENCE OF LOCAL TRANSITION AND PROVIDE INFORMATION ON THE FREQUENCY COMPONENTS OF THE FLOW WILL BE DEVELOPED. THE DESIGN CONCEPT IS AN ADAPTATION OF A TRANSITION DETECTOR USED SUCCESSFULLY IN BALLISTIC-MISSILE REENTRY-VEHICLE FLIGHTS. THE WORK WILL DEMONSTRATE CONCEPT FEASIBILITY ON FLIGHT SKINS OF PRESENT INTEREST TO NASA. A STUDY WILL BE PERFORMED TO PROVIDE DATA FOR MODELING THE TRANSITIONAL AND TURBULENT BOUNDARY LAYER PRESSURE SPECTRUM. AN EVALUATION OF ACOUSTIC NOISE SOURCES WHICH MAYAFFECT GAGE PERFORMANCE AND A METHOD FOR ADDRESSING THEM WILL BE MADE. A PRELIMINARY HEAT-RESISTANT DESIGN WILL BE CONSTRUCTED AND TESTED IN THE LABORATORY FOR LOCALIZED AND FREQUENCY RESPONSE. METHODS FOR IMPROVING GAGE ABILITY TO RESPOND TO ONLY LOCAL SIGNALS WILL BE IDENTIFIED. A FLIGHT TEST PROGRAM WILL BE SPECIFIED FOR EVALUATING GAGE PERFORMANCE IN A NASA FIELD TESTING. A NON-INTRUSIVE, BOUNDARY-LAYER TRANSITION DETECTOR THAT CANINDICATE THE PRESENCE OF LOCAL TRANSITION AND PROVIDE INFORMATION ON THE FREQUENCY COMPONENTS OF THE FLOW WILL BE DEVELOPED. THE DESIGN CONCEPT IS AN ADAPTATION OF A TRANSITION DETECTOR USED SUCCESSFULLY IN BALLISTIC-MISSILE REENTRY-VEHICLE FLIGHTS. THE WORK WILL DEMONSTRATE CONCEPT FEASIBILITY ON FLIGHT SKINS OF PRESENT INTEREST TO NASA. A STUDY WILL BE PERFORMED TO PROVIDE DATA FOR MODELING THE TRANSITIONAL AND TURBULENT BOUNDARY LAYER PRESSURE SPECTRUM. AN EVALUATION OF ACOUSTIC NOISE SOURCES WHICH MAYAFFECT GAGE PERFORMANCE AND A METHOD FOR ADDRESSING THEM WILL BE MADE. A PRELIMINARY HEAT-RESISTANT DESIGN WILL BE CONSTRUCTED AND TESTED IN THE LABORATORY FOR LOCALIZED AND FREQUENCY RESPONSE. METHODS FOR IMPROVING GAGE ABILITY TO RESPOND TO ONLY LOCAL SIGNALS WILL BE IDENTIFIED. A FLIGHT TEST PROGRAM WILL BE SPECIFIED FOR EVALUATING GAGE PERFORMANCE IN A NASA FIELD TESTING.

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

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