Gulfstream IV
Gulfstream IV | |
---|---|
The Gulfstream IV is a low-wing aircraft with twin aft-mounted turbofans and a T-tail, here in service of the United States Department of Commerce | |
Role | Business jet |
Manufacturer | Gulfstream Aerospace |
First flight | September 19, 1985 |
Status | Active service |
Primary users | United States Air Force United States Army United States Navy National Oceanic and Atmospheric Administration |
Produced | 1985–2018 |
Number built | 900+ [1] |
Developed from | Gulfstream III |
Developed into | Gulfstream V |
The Gulfstream IV (or G-IV or GIV) and derivatives are a family of
Upon delivery of the last G450, over 900 GIV/GIV-SP/G450 units had been produced. The last of the G450’s was delivered on 19 January 2018 after 365 deliveries over 12 years, ending a 30-year production run, to be replaced by the
Development
Gulfstream, in collaboration with Grumman, began work on the Gulfstream IV in March 1983 as a re-engined, stretched fuselage derivative of the Gulfstream III. The first GIV made its maiden flight on September 19, 1985.[2] The model received type certification from the FAA on April 22, 1987.[3] The G-IV entered into service with serial number 1000 in 1987 and was upgraded to the special purpose GIV-SP version at serial number 1214 in 1993. It was later redesignated G400 at serial number 1500.[4] A shorter range variant was created based on the GIV and given the G300 designation in 2002.[2]
In 2001, Gulfstream began work on an improved version of the GIV-SP, originally designated GIV-X. It was later renamed G450. The G450 is lengthened 1 ft (0.305 m) over the G400 and shares the forward fuselage and larger cockpit of the
By 2018, 1990 to 1992 GIVs were for sale at $1.6-4.4 million, 1992 to 1999 GIVSPs were listed for $1.25-5.2 million, 15-year-old G300s and G400s were available for $4.5-7 million and 2006 to 2016 G450s at $9.95-23.75 million.[7]
Design
Compared to the Gulfstream III, a decision to redesign the wing structure for weight reduction presented an opportunity for an aerodynamic redesign of the wing to reduce cruise drag and increase range. Wing contour modifications had to be restricted to the forward 65% of wing chord so that no redesign of the control surfaces would be necessary. Modification of the inboard wing would have entailed a redesign of the fuselage floor structure, consequently this region of the wing was not modified. Outboard wing modifications were aimed at reducing the peak subcritical pressure coefficient and moving it aft in an effort to reduce shock strength and increase shock sweep.[8]
At 12,420 lbs, the Rolls-Royce Tay fanjet engines provided more thrust than the 11,400 lbs of the Gulfstream III. Speed, noise levels, emissions, fuel economy, range, and cargo capacity were also markedly improved over the earlier model.[9]
The Gulfstream IV wing has a weaker, more swept outboard shock resulting in a lower cruise drag. Other benefits arising from this design are a lower root bending moment due to the more inboard center of pressure, a lower stall speed due to washout and a larger fuel volume due to increased chord. These aerodynamic improvements result in an increase in range of over 300 nautical miles.[10] In addition to the wing redesign, the Gulfstream IV also became the first business jet to have an entire glass cockpit.[11]
The G400 has a large cabin, long range of 4,350 nautical miles (8,060 km) and the same comfort and design that characterize the G series. Maximum cruise height and speed are 45,000 ft and Mach 0.85. Earlier models were fitted with Honeywell's SPZ 8000 Avionics package. The SPZ 8400 Avionics Package was an option, becoming standard on later models. Its second-hand price was below $15 million (~$20.7 million in 2023) in 2009.[4] Gulfstream had also considered making a 5.5 m (18 ft) longer, 24-27 seat model for airline use.[9]
Operational history
The
In June 1987 a Gulfstream IV set 22 world records in its class in flying west around the world in 45 hr 25 min. The next year another GIV set 11 world records flying east around the world.
Variants
C-20F/G/H/J military variants
The U.S. military variant of the IV, designated C-20F/G/H/J Gulfstream IV in
The C-20G aircraft
The C-20H is a GIV-SP model operated by the
The United States Department of Defense C-20A/B/C/D/E aircraft are all Gulfstream III variants.
G350/G450
The G450 is a designation for the model GIV-X, approved by the FAA on August 12, 2004, as is the G350, which has a reduced fuel capacity. Compared to the Gulfstream IV, its fuselage is 12 inches longer and the main entry door relocated aft. The
By the end of the G450 production run, 365 aircraft were produced, with prices ranging from $15 million to $32 million.[20]
Operators
Civil operators
The aircraft is operated by private individuals, companies and executive charter operators, and in fractional ownership programs.
Government and military operators
- Sultan of Brunei[21]
- Côte d'Ivoire Air Force[23]
- United States Air Force[22]
- United States Army[22]
- United States Navy[22]
- United States Marine Corps[22]
- National Oceanic and Atmospheric Administration
Former military operators
- The Irish Air Corps previously operated a G-IV as a government transport.[27]
- The Government of G550.[28]
Specifications
Model | GIV[29] | GIV-SP[29] | G350[30] | G450[31] |
---|---|---|---|---|
Cockpit crew | Two | |||
Capacity | 19 | |||
Length | 88 ft 4 in (26.92 m) | 89 ft 4 in (27.23 m) | ||
Wingspan | 77 ft 10 in (23.72 m) | |||
Wing area | 950.39 sq ft (88.3 m2) | |||
Overall height | 24 ft 5 in (7.45 m) | 25 ft 2 in (7.67 m) | ||
MTOW
|
73,200 lb (33,203 kg) | 74,600 lb (33,838 kg) | 70,900 lb (32,160 kg) | 74,600 lb (33,838 kg) |
Empty weight | 35,500 lb (16,103 kg) | 42,700 lb (19,368 kg) | 43,000 lb (19,504 kg) | |
Cruising speed | Mach 0.80 – Mach 0.85 (459–488 kn; 850–903 km/h; 528–561 mph) | |||
Maximum speed | Mach 0.88 (505 kn; 935 km/h; 581 mph) | |||
Range | 4,220 nmi (7,815 km; 4,856 mi) | 3,800 nmi (7,038 km; 4,373 mi) | 4,350 nmi (8,056 km; 5,006 mi) | |
Service ceiling | 45,000 ft (13,716 m) | |||
Engines (×2) | Rolls-Royce Tay 611-8 | Rolls-Royce Tay 611-8C | ||
Thrust | 13,850 lbf (61.6 kN) |
See also
Related development
Related lists
References
Citations
- ^ a b Sarsfield, Kate (2018-01-23). "Gulfstream launches G500 global demo tour". Flightglobal.
- ^ ISBN 1-875671-58-7.
- ^ a b "Type Certificate date Sheet NO. A12EA, revision 46" (PDF). FAA. February 22, 2016.
- ^ a b "Gulfstream IV". Business and Commercial Aviation. Aviation Week. January 2009.
- ^ Gerzanics, Michael (22 November 2004). "Flight Test: Gulstream [sic] G450 – Heir Apparent". Flight Global. Retrieved 15 October 2023.
- ^ Velocci, Tony (22 October 2016). "G450 Production Coming To An End". Forbes. Retrieved 15 October 2023.
- ^ Huber, Mark (December 2018). "For many models, market hitting the apex" (PDF). Aviation International News. pp. 20–21, 24.
- ^ Chandrasekharan, R.M., Murphy, W.R., Taverna, F.P. and Boppe, C.W., "Computational Aerodynamic of the Gulfstream IV Wing", AIAA paper 85-0427, presented at the AIAA 23rd Aerospace Sciences Meeting, Reno Nevada, January 1985.
- ^ a b Smith, David C. (March 1986). "Everybody takes a number". Ward's Auto World. 22 (3). Ward's Communications: 36.
- ^ Boppe, Charles W., "Computational Aerodynamic Design: X-29, the Gulfstream Series and a Tactical Fighter", SAE paper 851789, 1985 Wright Brothers Award Paper, presented at the Aerospace Technology Conference & Exposition, Long Beach California, October 1985.
- ^ Thomas, Joel (19 May 2014). "History of the Gulfstream Aerospace Corporation". stratos jet charters.
- ^ "Gulfstream IV-SP (G-IV) Archived 2007-02-18 at the Wayback Machine." National Oceanic and Atmospheric Administration web site.
- ^ Picture of the Gulfstream Aerospace G-IV Gulfstream IV-SP aircraft Retrieved 1 November 2011.
- ^ "Gulfstream Aerospace G-IV". airliners.net
- ^ Lacy, Clay. "Clay Lacy on Allen Paulson". Clay Lacy. Retrieved 19 August 2014.
- ^ DoD 4120-15L, Model Designation of Military Aerospace Vehicles. US DoD, 12 May 2004.
- ^ "Aviation Photo #0606801: Gulfstream Aerospace C-20G Gulfstream IV (G-IV) - USA - Navy". Airliners.net.
- ^ Wings of Gold, Vol. 36, No. 3, Fall 2011, Association of Naval Aviation, Alexandria, VA, pp.18-21
- ^ The Grey Ghost Archived 2011-07-04 at the Wayback Machine Hawaii Reporter: Dispatches from the War on Terrorism, September 24, 2004
- ^ George, Fred (November 24, 2014). "An Operational Look at: Gulfstream's G450". Business & Commercial Aviation.
- ^ a b "jeteditor.com". ww38.jeteditor.com.
- ^ a b c d e f g h "World Air Forces 2022". Flightglobal Insight. 2022. Retrieved 15 April 2022.
- ^ Cooper et al. 2011, p. 225
- ^ "Gulfstream IV" (in Dutch). Netherlands Ministry of Defence. Retrieved 17 October 2019.
- ^ "Aviation Photo #6744749: Gulfstream Aerospace G-IV Gulfstream IV-SP - Pakistan - Air Force".
- ^ Cooper et al. 2011, p. 232
- ^ "Government jet sold for €462k". March 30, 2015 – via www.rte.ie.
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(help) - ^ "Museveni's Shs88 Billion Jet Arrives". The Observer (Uganda). February 2009. Archived from the original on 18 June 2015. Retrieved 19 May 2015.
- ^ a b Frawley, Gerard. "Gulfstream Aerospace G-IV Gulfstream IV". The International Directory of Civil Aircraft. Technical Data & Specifications.
- ^ "G350 Specifications". Gulfstream. 2010.
- ^ "G450 Specifications" (PDF). Gulfstream. September 2015.
Bibliography
- Cooper, Tom; Weinert, Peter; Hinz, Fabian; Lepko, Mark (2011). African MiGs, Volume 2: Madagascar to Zimbabwe. Houston: Harpia Publishing. ISBN 978-0-9825539-8-5.
External links
- Gulfstream G450
- George, Fred (April 2000). "Gulfstream IV SP Operator Survey" (PDF). Business & Commercial Aviation. Aviation Week.
- George, Fred (December 2003). "Gulfstream's 450 Surprise". Business & Commercial Aviation. Aviation Week.