Aviation Photo #0057004 Grumman American G-1159 Gulfstream II/PTA - NASA

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(NASA 650) was a G-II modified for the joint NASA/ Lockheed Propfan Test Assessment program. The aircraft was fitted with a turboprop engine driving a "propfan" on the left wing only; a thick shield was applied to the side of the fuselage nearest the fan blades for protection. Also of interest are the long instrumentation boom and small counterweight on the left wing, and the much larger counterweight on the right wing, for balance purposes. The PTA program ran for about a year.
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    Frank J. Mirande
    NASA
    Grumman American G-1159 Gulfstream II/PTA
    Grumman American G-1159 Gulfstream II
    Grumman American G-1159 Gulfstream II
    Grumman American
    118
    N650PF
    Marietta - Dobbins ARB (Atlanta NAS)
    Georgia
    USA
    April 1987
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Photo Added: December 03, 1999

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