The Gulfstream IV of the American manufacturer Gulfstream Aerospace is a large twin-engine long-range business jet, which has sold over five hundred times from 1985 to 2002.
The Gulfstream IV is the successor to the Gulfstream III. The new model has a longer range with increased payload and reduced fuel consumption. The development started in early 1983, the first flight took place on September 19, 1985 by Airport Savannah / Hilton Head with Lee Johnson and Ted Mendenhall as test pilots instead. In September 1992, the original version was replaced by the completely redesigned Gulfstream IV -SP, at the payload and range have been increased again.
As the successor to the Gulfstream V has been developed, which was delivered in 1997.
The planned transport version was designated SRA -4 and is primarily intended for military purposes ( electronic warfare, reconnaissance); the prototype had its maiden flight in 1988. The U.S. Army provided some Gulfstream IV as C -20F, the U.S. Navy five machines as C -20G for up to 26 passengers and a cargo door on the right side and the U.S. Air Force a version of the GIV- SP than C -20H in service. Also a version of the GIV- SP is the S 102B Korpen the Swedish Air Force for electronic reconnaissance. A demonstrator of the EC- 20F for U.S. Navy flew from August 1988, but was not built in series. The U-4 is a multi-purpose version for the Japanese air forces.
Compared to the previous model, the Gulfstream IV has a slightly lengthened fuselage. It was equipped with the quieter and more fuel-efficient Rolls- Royce Tay turbofan engines and received newly designed wings. The cockpit is equipped with EFIS screens.
The Gulfstream IV is used primarily as a business airplane. In addition, it is used as a weather observation aircraft at the U.S. National Oceanic and Atmospheric Administration NOAA and the Air Ambulance.
The Gulfstream IV -SP several records were, for example, round the world, flight testing.