Overview including differentiating features from other aircraft in its category
The Gulfstream GIV and GIV-SP is a significantly improved, larger, longer-range and advanced development of the earlier GII and GIII. The most significant improvement with the GIV and GIV-SP over the earlier Gulfstream models is the Rolls-Royce Tay engines, which bring significant fuel burn and noise emission improvements despite their higher thrust output than the GII and GIII Spey engines.
Other changes included a stretched fuselage, and aerodynamically and structurally improved wing with 30% fewer parts, greater fuel capacity and range, increased span tail and an advanced EFIS avionics suite with six color CRT displays.
The Gulfstream GIV-SP, large cabin Business Jet, gross takeoff weight is 1,400 pounds increase over the GIV. Like the GIV it employs a Goodyear Aerospace brake-by-wire system and a Dowty fail-passive steer-by-wire system, making pilot maneuverability easier.
Up to 19 passengers and amenities include a large galley and full-sized lavatory. The stretched fuselage provides for six cabin windows per side and the restructured wing is 870 lbs. lighter while providing capacity for nearly 1,000 gallons more fuel.
As of January 2014, the Gulfstream GIV-SP market is comprised of 100% pre-owned. The percentage for sale is 10.8% with 88% under an exclusive broker agreement and average days on the market are 376 days.
The improved Gulfstream GIV-SP (SP representing Special Performance), with higher payload and landing weights and improved payload range performance, replaced the GIV from September 1992, (there is, however, an ASC190 that allows an owner/operator to upgrade a GIV to a GIV-SP).
Of the 305 GIV-SP aircraft in operation by continent, North America has the largest percentage at 81%, followed by Asia at 8%, and Europe at 5% for a combined total of 94%. Also, 32% of the GIV-SP jets in operation today are in fleet ownership with the largest fleet operator (NetJets) having 18 aircraft. Interestingly, 18% of the GIV-SP jets are leased.
Two Rolls-Royce Mk 611-8 engines provide 13,850 lbs of thrust each. The Gulfstream GIV-SP uses 415 gallons per hour (GPH). The range of the GIV-SP is 4,091 nm operating under NBAA IFR 4 passengers with available fuel.
The cabin volume for the Gulfstream GIV-SP is 1,525 cubic feet. Typical configuration features 14/19 passenger and 2 crew seats. The aircraft has a galley and a lavatory.
The Gulfstream GIV-SP Maximum Take-Off Weight (MTOW) is 74,600 pounds (33,839 kg) with a maximum range of 4,148 nm.
|Maximum Cruise Speed:||476 kts||882 km/h|
|Long-range Speed:||459 kts||850 km/h|
|Takeoff distance:||5,450 ft (1,661 m)||(SL, ISA, MTOW)|
|Landing distance:||3,190 ft (972 m)||(SL, ISA, MLW)|
|Maximum operating altitude:||45,000 ft (13,716 m)|
Noise Level (EPNdB)
|A.||Maximum ramp weight:||75,000 lb (34,019 kg)|
|B.||Maximum takeoff weight:||74,600 lb (33,838 kg)|
|C.||Maximum landing weight:||66,000 lb (29,937 kg)|
|D.||Maximum zero fuel weight:||49,000 lb (22,226 kg)|
|E.||Standard basic operating weight:||43,500 lb (19,731 kg)|
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