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The success of the Grumman Gulfstream I led to the development of an improved jet powered version in may 1965. The G-II shares the forward fuselage with it's turboprop powered predecessor but differs with a swept wing and tail and two rear mounted jet engines. The G-II proved to be even more successful than the G-1 and over 250 were built. The National Aeronautics and Space Administration uses several G-II's for transport and experimental flights and two of them were converted to serve as pilot trainers for the Space Shuttle. In those aircraft half of the G-II cockpit is replaced with an exact replica of the Shuttle's cockpit and the aircraft is flown in such a way that it mimics the flight characteristics of the Shuttle.
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| Wingspan |
68 ft 10 in |
| Length |
79 ft 11in |
| Height |
24 ft 6 in |
| Weight |
65,500 bs (loaded) |
| Maximum Speed |
581 mph |
| Service Ceiling |
45,000 ft |
| Range |
4,718 miles |
| Engines |
2 Rolls-Royce Spey 511SR Turbofans 11,400 lbs thrust each |
| Crew |
2 Pilots, 22 Passengers |
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