REMOTE WIND VELOCITY SENSING

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$49,979.00
Award Year:
1989
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
10278
Agency Tracking Number:
10278
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
13766 S Hawthorne Blvd, Hawthorne, CA, 90250
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Wayne F Jewell
(415) 961-4674
Business Contact:
() -
Research Institute:
n/a
Abstract
THE AIRWAKE VELOCITY FIELD IN THE RECOVERY ENVELOPE FOR AVIATION-CAPABLE SHIPS IS EXTREMELY COMPLEX. TURBULENT VORTICES GENERATED BY THE SHIP'S SUPERSTRUCTURE CHANGE DIRECTION AND INTENSITY WITH THE MAGNITUDE AND DIRECTION OF THE WIND OVER DECK (WOD) AS WELL AS WITH THE PITCHING AND ROLLING MOTIONS OF THE SHIP. THE CURRENT PRACTICE FOR INSURING SAFE OPERATIONS WITH A PARTICULAR HELICOPTER/SHIP COMBINATION IS TO PERFORM DYNAMIC INTERFACE (DI) TESTING UNDER VARIOUS WOD AND SHIP'S MOTION CONDITIONS. THE PROCESS OF DI TESTING COULD BE EXPEDITED IF THE VELOCITIES IN THE AIRWAKE FIELD COULD BE ACCURATELY MEASURED, MODELED, AND EVEN PREDICTED AT VARIOUS WOD CONDITIONS. PREVIOUS ATTEMPTS TO MEASURE THE AIRWAKE FIELD AROUND SCALE MODELS OF SHIPS USING WIND TUNNELS HAVE PRODUCED QUESTIONABLE RESULTS. COMPUTATIONAL FLUID DYNAMICS HAS ALSO BEEN SUED TO PREDICT THE AIRWAKE FIELD, BUT IT REMAINS TO VALIDATE THE PREDICTIONS WITH FULL-SCALE MEASUREMENTS. REMOTE WIND SENSORS EMPLOYING LASER DOPPLER VELOCIMETRY OFFER PROMISE FOR MAPPING THE FULL-SCALE THREE-DIMENSIONAL SPATIALAND TIME-DEPENDENT AIRWAKE FIELD. TWO OBJECTIVES ARE ADDRESSED BY THIS PROPOSAL: (1) TO DEVELOP A PLAN FOR PROCESSING AND ANALYZING THREE-DIMENSIONAL AIRWAKE DATA COLLECTED WITHIN THE RECOVERY ENVELOP OF AN AIR-CAPABLE SHIP USING A REMOTE WIND SENSOR, AND (2) TO CONSIDER HOW THE PROCESSED DATA COULD BE USED IN ADVANCE OF DI TESTING FOR BOTH REAL-TIME AND NON-REAL-TIME MODELING AND ENGINEERING ANALYSIS OF AIRWAKE DISTURBANCES ON AIRCRAFT.

* information listed above is at the time of submission.

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