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Collectively the most successful members of the Gulfstream corporate aircraft family, the Gulfstream II and Gulfstream III are Spey powered developments of the original turboprop powered Gulfstream I.
The Rolls-Royce Dart turboprop powered Grumman Gulfstream I proved to be quite successful as a large long range corporate transport, while the availability of an faster and more powerful turbojet powered model, the Rolls-Royce Spey meant that a jet powered successor was a logical development. Grumman launched such an aircraft, named the Gulfstream II or G-II, in May 1965. |
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G-II - Max cruising speed 935km/h (505kt), economical cruising speed 795km/h (430kt). Initial rate of climb 4350ft/min. Range with max fuel and reserves 6880km (3715nm).
G-III - Max cruising speed 928km/h (500kt), economical cruising speed 818km/h (442kt). Initial rate of climb 3800ft/min. Max operating ceiling 45,000ft. Range with eight passengers and reserves 7600km (4100nm).
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