Dryden Home > Collections > Photo Home > F-15B > Photo # EC96-43669-4 |
New sonic shockwave multi-element sensors mounted on a small airfoil flown on F-15B testbed aircraft | ||
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Photo Number: | EC96-43669-4 | |
Photo Date: | Dec 1996 | |
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Formats: | 558x480 JPEG Image (57 KBytes) 1190x1024 JPEG Image (577 KBytes) 3030x2606 JPEG Image (9,481 KBytes) |
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Description: |
An experimental device to pinpoint the location of a shockwave that develops in an aircraft flying at transonic and supersonic speeds was recently flight-tested at NASA's Dryden Flight Research Center, Edwards, California.
The shock location sensor, developed by TAO Systems, Hampton, Va., utilizes a multi-element hot-film sensor array along with a constant-voltage anemometer and special diagnostic software to pinpoint the exact location of the shockwave and its characteristics as it develops on an aircraft surface. For this experiment, the 45-element sensor was mounted on the small Dryden-designed airfoil shown in this illustration. The airfoil was attached to the Flight Test Fixture mounted underneath the fuselage of Dryden's F-15B testbed aircraft. Tests were flown at transonic speeds of Mach 0.7 to 0.9, and the device isolated the location of the shock wave to within a half-inch. Application of this technology could assist designers of future supersonic aircraft in improving the efficiency of engine air inlets by controlling the shockwave, with a related improvement in aircraft performance and fuel economy. |
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Keywords: | F-15; F-15B; Flight Test Fixture; TAO Systems; hot-film; shock wave; shockwave location sensor; anemometer | |
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Keywords: | F-15B Flight Test Fixture home page F-15B Flight Test Fixture Fact Sheet - FS-1998-10-055-DFRC |
Dryden Home > Collections > Photo Home > F-15B > Photo # EC96-43669-4 |
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Last Modified: February 6, 2002 |