(Grumman) Gulfstream I @·AIRCRAFTUBE

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    Grumman G-159 Gulfstream I - 1981
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  • Grumman G-159 Gulfstream I Grumman G-159 Gulfstream I
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  • Grumman G-159 Gulfstream I Grumman G-159 Gulfstream I
    Grumman G-159 Gulfstream I

Grumman G-159 Gulfstream I

The Grumman Gulfstream I (company designation G-159) is a twin turboprop business aircraft. It first flew on August 14, 1958.

Design and development

After first rejecting an idea to develop the Grumman Widgeon as an executive transport, the company studied producing an executive transport based on a turbine-powered variant of the naval utility transport Grumman TF-1 Trader. The company had already determined any new aircraft would have to be turboprop powered and the Rolls-Royce Dart was chosen. Further studies showed that the Trader-based design would not sell and they needed an all new design with a low-wing and room to stand up in the cabin. In June 1957 the design of G-159 was finalised and Grumman started selling slots on the production line at $10,000 each. The initial customers worked with Grumman on the detailed design and avionics fit. The G-159 was given the name Gulfstream and on the 14 August 1958 the first aircraft, registered N701G, took off from Bethpage, New York on its maiden flight. By 2 May 1959 the aircraft was awarded a type certificate by the Federal Aviation Administration.

The Gulfstream I is a low-wing cantilever monoplane with a semi-monocoque aluminium alloy fuselage structure. The aircraft is powered by two Rolls-Royce Dart turboprops with four-bladed constant speed propellers. The Gulfstream I has a retractable tricycle landing gear, with twin wheels on the two main units and the nosewheel. The cabin is designed to take up to twenty-four passengers in a high-density arrangement or only eight in an executive layout, although ten to twelve was more usual. The aircraft has a hydraulically operated airstair in the forward cabin for entry and exit.

The United States military version for this plane is the C-4 Academe. The TC-4 is a version with added instruments and navigation. It was used by US Navy for bombardier/navigator training for the A-6 Intruder. A VC-4A variant was flown by the United States Coast Guard as an executive transport until the early 1980s. It was later used as a logistics and long-range command and control aircraft until 2001.

A 37-passenger stretched version, the G-159C, was developed by Gulfstream for regional airline use. Five were delivered from November 1980. Air North (Plattsburgh NY) (which subsequently changed its name to Brockway Air) was one the few airlines in the U.S. to use this version before its acquisition by Brockway Glass. Another Gulfstream I-C airline operator was Chaparral Airlines which flew passenger services as American Eagle via a codesharing agreement with American Airlines. Royale Airlines also operated the G-I in scheduled passenger service in the U.S. operating as Continental Connection on behalf of Continental Airlines; however, its aircraft were standard length G-159 models and thus were not the stretched version. Several other airlines in the U.S. as well air carriers in Africa, Canada, Europe and the Mideast also operated standard Gulfstream Is in scheduled passenger service, including Peregrine Air Services in the U.K. which operated airline flights for British Airways.

Operational history

In August 2006, a total of 44 Grumman Gulfstream I aircraft remain in service. The major operator is Phoenix Air in the United States with 13 aircraft. Some 19 other airlines also operate the type.

Variants

  • G-159 Gulfstream I : Twin-engined executive, corporate transport aircraft with accommodation for up to 14 passengers, powered by two 2,210-ehp (1648-kW) Rolls-Royce Dart RDa.7/2 Mk 529-8X turboprop engines. 200 built.
  • G-159C Gulfstream I-C : Stretched regional airline version. Five G-I aircraft were converted into Gulfstream I-Cs, by having the fuselage lengthened by 10 ft 8 in (3.25 m) to provide seating for up to 37 passengers.
  • VC-4A : VIP transport version for the US Coast Guard. One built.
  • TC-4B : United States military designation for a cancelled order for ten aircraft for the United States Navy for the navigation training and transport duties.
  • TC-4C Academe : United States military designation for a bombardier, navigator trainer trainer for the US Navy first flown in 1967. Aircraft were fitted with an Grumman A-6 Intruder nose radome, a simulated A-6 cockpit and four bombadier/navigator consoles for A-6 crew training, nine built.

Operators

Most of the 200 Gulfstream I propjets were operated by corporate customers, with a smaller number operated by regional or commuter airlines as well as by government agencies and the military. NASA, the U.S. space agency, flew the Gulfstream I as a passenger transport aircraft and operated seven (7) G-Is.

Civilian operators

  • Canada
  • Denmark
  • France
  • Gabon
  • Israel
  • Kenya
  • Spain
  • United Kingdom
  • United States

Military Operators

  • Greece.
  • The United States Coast Guard and US Navy.

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This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Grumman Gulfstream I of Wikipedia ( authors )

Specifications (Gulfstream I)

  • Crew : 2 pilots.
  • Payload : 10 to 24 passengers.
  • Length : 19 m 40.
  • Height : 6 m 80.
  • Wingspan : 23 m 90.
  • Wing area : 56.7 m².
  • Empty wt : 9,930 kg.
  • Max. takeoff weight : 15,920 kg.
  • Max. speed : 648 km/h.
  • Cruise speed : 575 km/h.
  • Landing speed : 135 km/h.
  • Ceiling : 10,670 m.
  • Climbing rate : 9.7 m/s.
  • Takeoff roll : 635 m.
  • Landing roll : 460 m.
  • Range : 3780 km.
  • Engines : Two Rolls-Royce Dart Mk.529 turboprops.
  • Power : 2,190 shp (1,630 kW) each.

— — — = = — — —

This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Grumman Gulfstream I of Wikipedia ( authors )
Grumman G159 Gulfstream I : Your comments on this subject
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