Grumman G-1159 Gulfstream II/III
- CountryUnited States of America
- TypeLong range large corporate jet
- PowerplantsG-II & III - Two 50.7kN (11,400lb) Rolls-Royce Spey axial flow turbojets.
- PerformanceG-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).
- WeightsG-II - Operating empty 16,740kg (36,900lb), max takeoff 29,710kg (65,500lb). G-III - Empty 14,515kg (32,000lb), operating empty 17,235kg (38,000lb), max takeoff 31,615kg (69,700lb).
- DimentionsG-II - Wing span 20.98m (68ft 10in), length 24.36m (79ft 11in), height 7.47m (24ft 6in). Wing area 75.2m2 (809.6sq ft). G-III - Wing span 23.72m (77ft 10in), length 25.32m (83ft 1in), height 7.43m (24ft 5in). Wing area 86.8m2 (933sq ft).
- CapacityFlightcrew of two. Main cabin seating for up to 19 in G-II or 21 in G-III in a high density configuration, or eight to 12 in a typical corporate configuration.
- ProductionTotal Gulfstream II and III production amounted to 464 aircraft, comprising 258 G-IIs and 206 G-IIIs. 244 G-IIs and 198 G-IIIs were in service in 1998.
All things considered the best parts of the Gulfstream corporate air ship family, the Gulfstream II and Gulfstream III are Spey fueled advancements of the first turboprop controlled Gulfstream I.
The Rolls-Royce Dart turboprop controlled Grumman Gulfstream I turned out to be truly fruitful as a huge long run corporate transport, while the accessibility of a speedier and all the more compelling turbojet fueled model, the Rolls-Royce Spey implied that a plane fueled successor was a coherent improvement. Grumman dispatched such an air ship, named the Gulfstream II or G-II, in May 1965.
While focused around the first Gulfstream I - the G-II shares the same forward fuselage and cross segment - there are a greater number of contrasts than similitudes. The most evident contrast is the two back mounted Spey pivotal stream turbojet motors, others incorporate another cleared wing and tail. A comparable size fuselage to the G-I seats 10 in a normal official setup.
No model G-II was fabricated, rather the first to fly was a creation standard flying machine, which first flew on October 2 1966. Certificate and first generation conveyances happened in October and December 1967 separately.
The enhanced Gulfstream III took after Gulfstream American's buy of Grumman's GA lines in 1978. The Gulfstream III first flew on December 2 1979. Progressions contrasted and the G-II incorporate a reexamined wing of more noteworthy compass and zone with drag decreasing winglets, more fuel tankage and along these lines reach, reprofiled nose and a 97cm (3ft 2in) fuselage stretch. Gulfstream Iibs are G-Iis retrofitted with the G-III's wing.
Generation conveyances of G-Iiis started in late 1980 and proceeded until 1986 when creation stopped for the Gulfstream IV, a to some degree bigger model with two new, quieter, all the more effective and fuel productive Rolls-Royce Tay turbofans.
Pictures of Grumman G-1159 Gulfstream II/III
