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NASA Meatball NASA Dryden F-18 High Alpha Research Vehicle (HARV) banner
F-18 HARV in flight F-18 HARV in flight

Photo Number: EC92-10231-2
Photo Date: October 23, 1992

Formats: 558x480 JPEG Image (59 KBytes)
1191x1024 JPEG Image (397 KBytes)
2000x1720 JPEG Image (458 KBytes)

Description: The modified F-18 flown by NASA's Dryden Flight Research Center, Edwards, California, for high angle of attack research cruises over the nearby desert. A thrust vectoring system, linked to the aircraft's flight control system, was installed on each of the engine exhaust nozzles. The system moves a set of three paddles on each engine to redirect thrust for directional control and increased maneuverability at angles of attack at up to 70 degrees.

Data from the F-18 high angle of attack program produced information to validate computer codes and wind tunnel results and led to design methods providing better performance in future aircraft.

Keywords: F-18 High Alpha Research Vehicle; thrust vectoring; HARV; high angle of attack

Last Modified: February 6, 2002
Responsible NASA Official: Marty Curry
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