NON-INTRUSIVE BOUNDARY LAYER TRANSITION FREQUENCY DETECTOR

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$49,000.00
Award Year:
1991
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
16885
Agency Tracking Number:
16885
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1257 Lake Plaza Dr, Colorado Springs, CO, 80906
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
() -
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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