Finding:

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   NASA

   Throughout its history, NASA has used several different types of aircraft on a permanent, semi-permanent, or short-term basis.
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   NASA ERAST Program

   Designed to cruise at slow speeds for long durations at altitudes of 60,000 to 100,000 ft, such aircraft could be used to collect, identify, and monitor environmental data to assess global climate change and assist in weather monitoring and forecasting. ... In 1987 and 1988, NASA conducted atmospheric ozone-layer depletion studies using two piloted NASA aircraft, a modified Douglas DC-8 jetliner and a Lockheed ER-2, a civilian version of the U-2 spy plane.
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   Weightlessness

   NASA's Reduced Gravity Aircraft ... Other aircraft it has used include the Russian Ilyushin Il-76 MDK and French Caravelle.
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   F-16 Fighting Falcon

   From 1989–1999, both aircraft were used by NASA for several experimental research programs, and in 2007, NASA was considering returning the single-seat F-16XL to operational status for further aeronautical research.
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   F-16 Fighting Falcon variants

   From 1989–1999, both aircraft were used by NASA for several experimental research programs, and in 2007, NASA was considering returning the single-seat F-16XL to operational status for further aeronautical research.
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   Shuttle Carrier Aircraft

   The Shuttle Carrier Aircraft (SCA) are two extensively modified Boeing 747 airliners that NASA uses to transport Space Shuttle orbiters. ... The avionics and engines were also upgraded, and an escape tunnel system similar to that used on Boeing's first 747 test flights was added .
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   NASA Pathfinder

   AeroVironment, Inc. developed the vehicles under NASA's Environmental Research Aircraft and Sensor Technology (ERAST) program. ... In July 2002 Pathfinder-Plus carried commercial communications relay equipment developed by Skytower, Inc., a subsidiary of AeroVironment, in a test of using the aircraft as a broadcast platform.
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   Aircraft

   NASA test aircraft ... Some of the smaller types are also used in general aviation, and some of the larger types are used as VIP aircraft.
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   T-38 Talon

   The basic airframe was used for the light combat aircraft F-5 Freedom Fighter family. ... NASA also uses the plane as a jet trainer for its astronauts; its fleet is housed primarily at Ellington Field in Houston, Texas.
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    F/A-18 Hornet

    NASA used the F-18 HARV to demonstrate flight handling characteristics at high angle-of-attack (alpha) of 65-70 degrees using thrust vectoring vanes. ... Jet aircraft

Explore the following pages on Powerset:

• NASA,
• NASA ERAST Program,
• Weightlessness,
• F-16 Fighting Falcon,
• F-16 Fighting Falcon variants,
• Shuttle Carrier Aircraft,
• NASA Pathfinder,
• Aircraft,
• T-38 Talon,
• F/A-18 Hornet