Skip Top nav bar link group topnav end piece go to business section go to education section go to history section go to gallery section go to news section go to organizations section go to research section go to search engine go to site index topnav end piece
NASA Meatball NASA Dryden F-18 HARV Phase III Strake Experiment Movies banner
F-18 HARV Phase III Strake Experiment

F-18 HARV Phase III Strake Experiment

Movie Number   EM-0013-03
Movie Date   circa 1995
Formats   160x120 QuickTime Movie (.8 MB)
320x240 QuickTime Movie (1.7 MB)
480x320 QuickTime Movie (2.5 MB)
640x480 QuickTime Movie (4.1 MB)
F-18 HARV Still photos of the F-18 HARV are available in several resolutions at
http://www.nasa.gov/centers/dryden/multimedia/imagegallery/F-18HARV/index.html
Description  

This 23 second movie clip shows the F-18 HARV Phase III Strake Experiment flight

NASA's Dryden Flight Research Center, Edwards, CA, used an F-18 Hornet fighter aircraft as its High Angle-of-Attack (Alpha) Research Vehicle (HARV) in a three-phased flight research program lasting from April 1987 until September 1996. The aircraft completed 385 research flights and demonstrated stabilized flight at angles of attack between 65 and 70 degrees using thrust vectoring vanes, a research flight control system, and (eventually) forebody strakes (hinged structures on the forward side of the fuselage to provide control by interacting with vortices, generated at high angles of attack, to create side forces).

This combination of technologies provided carefree handling of a fighter aircraft in a part of the flight regime that was otherwise very dangerous. Flight research with the HARV increased our understanding of flight at high angles of attack (angle of the wings with respect to the direction in which the aircraft was heading), enabling designers of U.S. fighter aircraft to design airplanes that will fly safely in portions of the flight envelope that pilots previously had to avoid.

Keywords   F-18; High Angle-of-Attack Research Vehicle; HARV; Phase III Strake Experiment
Skip bottom nav bar link group Business | Education | History | Gallery | News Room | Organizations | Research | Search | Site Index

   Last Modified: July 2, 2003
   Responsible NASA Official: Marty Curry
   Curator: PAO Webmasters

   NASA Website Privacy Statement