Gulfstream G500/G600

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G500 / G600
Gulfstream G600.jpg
G600 test aircraft in flight
Role Business jet
National origin United States
Manufacturer Gulfstream Aerospace
First flight G500: May 18, 2015[1]
G600: December 17, 2016[2]
Introduction G500: September 27, 2018.[3]
Status G500 delivered, G600 Under development
Number built G500: 5 as of May 2016[4]
G600: 5 as of August 2017[5]
Unit cost
G500: $43.5 M, G600: $54.5M (2014)[6]
G500: $45.5M, G600: $57.9 M (2018)[7]

The Gulfstream G500 and G600 (GVII) are twin-engine business jets designed and manufactured by Gulfstream Aerospace. Both were unveiled on October 14, 2014. The G500 first flew on May 18, 2015, received its FAA type certification on July 20, 2018 and was first delivered on September 27, 2018. The longer G600 had its first flight on December 17, 2016. The G500 will replace the G450 while the larger G600 will succeed the G550. Powered by two Pratt & Whitney Canada PW800 turbofans, the 76,850 lb (34.9 t) MTOW G500 has a range of 5,200 nmi (9,630 km) while the 91,600 lb (41.5 t) G600 can cover 6,500 nmi (12,040 km).

Development[edit]

Both aircraft were unveiled by Gulfstream Aerospace on October 14, 2014.[8] During the second quarter of 2017, 80% of Gulfstream orders were for the G500/G600.[9]

G500[edit]

G500 at EBACE 2018

The G500 was taxiing under its own power at its unveiling on October 14, 2014.[8] It first flew on May 18, 2015.[1] It was initially planned to be certified in 2017.[4][10] In May 2017, the test fleet of four G500 prototypes and the first production aircraft, made over 745 flights in two years for 2,900 flight hours, on track for the certification by the end of the year.[11]

In August 2017, the FAA issued the G500 a type inspection authorisation to allow in flight evaluation. The five G500 test aircraft have logged more than 3,100h over 820 sorties and completed cabin systems, brakes, lighting, fly-over noise and fuel systems tests. The fifth G500, with a complete interior, will be the first to enter service, as a demonstrator, before customer deliveries in early 2018.[9] Through August 20, the G500s have flown 3,460 h over 905 flights, reaching Mach 0.995 and FL530.[12]

For the October 2017 NBAA show, the five G500s were completing their campaign with 995 flights and 3,690h - 10h 19min for the longest - the first delivery schedule was maintained as certification was pushed until early 2018.[13] Mach 0.85 range for the G500 was extended by 200 nmi to 5,200 nm/9,630 km and by 600 nm/1,111 km to 4,400 nm/8,149 km at Mach 0.90.[14]

The 300 flights hours of function and reliability testing required for FAA type certification was to be completed in summer 2018 after 240 were done at the end of May 2018 covering 100,300 nmi in 69 flights, along known icing flight and high-elevation certification tests: the five flight-test G500s made 1,355 flights in 4,955 hours.[15]

On July 20, 2018, Gulfstream announced it received both its type certification and production certificate from the FAA, before first delivery in the fourth quarter.[16] As nacelle supplier Nordam filed for bankruptcy on 23 July, initial deliveries will be slowed.[17] Certification allowed the EFVS to provide the only visual cues for landing down to 1,000 ft (300 m) runway visual range, to touchdown and rollout, after 50 test approaches, and testing to lower visibilities could allow dropping the limit.[18]

The first G500 was delivered on September 27, 2018.[3] On October 1, Gulfstream announced the acquisition of the nacelle manufacturing line from Nordam.[19]

G600[edit]

The G600 tail at EBACE 2018

The longer G600 had its first flight at Savannah-Hilton Head International Airport on December 17, 2016.[2][20] Four flight-test aircraft and a production G600 will be used for the test program for a scheduled 2018 introduction:[21]

In August 2017, the fifth was being outfitted for its third quarter first flight.[9] Through August 20, the four G600s have logged 780 h in 175 flights, the longest lasting 13 h 5 min, it completed testing for initial flight envelope expansion and flying qualities, flutter, brakes, low speed or stall, loads calibration, parameter identification and climb performance, the fifth test aircraft will fly later in the quarter.[12]

For the October 2017 NBAA show, five G600 were flying as it was to be introduced in early 2019.[13] Range for the G600 was extended by 300 nmi/556 km for both Mach 0.85 to 6,500 nm/12,038 km and Mach 0.90 to 5,100 nm/9,445 km.[14] In October 2018, Mach 0.9 range was increased again to 5,500 nmi (10,200 km).[22]

Certification and introduction for the G600 should happen in 2018 like for the G500.[7] The five flight-test G600s accumulated 1,950 hours in 510 flights, were completing mechanical systems certification testing in May 2018 before airfield-performance testing in summer.[15] By August, 600 flights over 2,290 hours were completed after trials for ice shapes and stall speed testing and before field-performance testing, towards U.S. approval by year-end and deliveries in 2019.[23] By October, the test aircraft had accumulated 685 flights in over 2,600 hours.[24]

Design[edit]

The G500 will replace the G450, flying nearly 30 knots (56 km/h) faster and 18% farther with the same fuel burn.[25] The larger G600 will succeed the G550.[26]

Airframe[edit]

G500 cabin

Both models have a four circular arcs cross-section fuselage, similar to the Gulfstream G650, with a 7 in (18 cm) reduction in width and height. Similar in dimension to the Dassault Falcon, the G500/600 have 2 in (5.1 cm) more headroom, 7 in (18 cm) more cabin width and 8 in (20 cm) more floor width than Gulfstream's G450 and G550.[27] The fuselage has an external height of 8 ft 4 in (2.54 m), and width of 8 ft 5 in (2.57 m). The production G500 will have 14 windows, two more than the prototype models.[10]

The wing is a supercritical design with a 0.87 to 0.88 drag divergence Mach number depending upon lift coefficient.[25] It is based on the G650's wing design with the same 36° sweep. The G600's wingspan will be 8 ft (2.4 m) wider than the G500, allowing for 10,000 lb (4,500 kg) of additional fuel. Both models have a new tail design based on the aerodynamic shape and systems of the G650's tail.[6]

The airframe is primarily composed of high-strength aluminum alloys with limited use of steel and titanium alloys. The horizontal stabilizer, fairings, main landing gear doors, rudder and elevators, radome, rear pressure bulkhead and winglets are composite materials. The semi-monocoque fuselage structure is made of stressed skin, frame and longeron.[25]

Engines[edit]

PW815 on a G600

The G500/G600 will be powered by the Pratt & Whitney Canada PW800 series turbofan engines (PW814 for G500 and PW815 for G600) which was originally conceived for the Cessna Citation Columbus program. The PW800 is based on the Pratt & Whitney Geared Turbofan core without the gear reduction. The departure from Rolls-Royce Aero Engines is a first for Gulfstream.[26] For the G500 in cruise, at FL400, ISA -5°C, total fuel flow is 2,920 lb (1,320 kg)/h at M0.90/510 kn (945 km/h) TAS, 2,400 lb (1,090 kg)/h at M0.85/476 kn (882 km/h) TAS.[28] At FL450, Mach 0.90/506 kn (937 km/h) TAS and ISA -8°C, it burns 2,600 lb (1,200 kg)/h.[29]

Systems[edit]

G600 flight deck

Electric and hydraulic systems are from the G650, as the digital air data computers, secondary power distribution with electronics, cabin acoustical treatment, primary avionics, satcom, improved cabin management system and digital fly-by-wire system. The oxygen, cabin pressurization, landing gear control, aircraft health and trend monitoring systems are adapted from the G650.[27] The auxiliary power unit is a Honeywell HTG400G.[25]

It is equipped with BAE Systems active sidesticks, appearing to be mechanically linked by being electrically back-driven, the first civil aircraft to be so.[25] The Honeywell Symmetry Flight Deck features four portrait main displays, three touchscreens on the overhead panel instead of stand-alone switches ; there are four touchscreens in the glareshield and left and right touch standby displays at each seat. The enhanced flight vision system is displayed through 42×30° field-of-view head-up display, along a complete avionics suite.[30]

Specifications[edit]

Model G500[31] G600[32]
crew 2 pilots
Capacity Up to 19 passengers
Length 91 ft 2 in (27.78 m) 96 ft 1 in (29.29 m)
Wingspan 87 ft 1 in (26.55) m 95 ft (28.96 m)
Height 25 ft 6 in (7.78 m) 25 ft 3 in (7.70 m)
MTOW 76,850 lb (34,859 kg) 91,600 lb (41,549 kg)
BOW 46,600 lb (21,137 kg), 3 crew 51,440 lb (23,333 kg), 4 crew
Max. Payload 5,500 lb (2,495 kg) 6,000 lb (2,722 kg)
Max. Fuel 28,850 lb (13,086 kg) 38,760 lb (17,581 kg)
Turbofan (2×) P&WC PW814GA P&WC PW815GA
Thrust, takeoff (2×) 15,144 lbf (67.36 kN) 15,680 lbf (69.75 kN)
Range (M0.85)[13] 5,200 nmi (9,630 km) 6,500 nmi (12,040 km)
Cruise Mach 0.85–Mach 0.90 (488–516 kn; 903–956 km/h) Long-Range/Max
Takeoff (SL, ISA, MTOW) 5,200 ft (1,585 m) 5,700 ft (1,737 m)
Landing (SL, ISA, MLW) 3,100 ft (945 m)
Ceiling 51,000 ft (15,545 m)

See also[edit]

Related development

Aircraft of comparable role, configuration and era

References[edit]

  1. ^ a b "Gulfstream G500 Completes First Flight" (Press release). Gulfstream. May 18, 2015.
  2. ^ a b "Gulfstream G600 takes flight ahead of schedule" (Press release). Gulfstream. December 17, 2016.
  3. ^ a b "Gulfstream Delivers First New-generation G500 On Time" (Press release). Gulfstream. September 27, 2018.
  4. ^ a b "Gulfstream G500 and G600 programs on track" (Press release). Gulfstream. May 25, 2016.
  5. ^ "FULLY OUTFITTED GULFSTREAM G600 TEST AIRCRAFT COMPLETES FIRST FLIGHT". Gulfstream News. August 29, 2017.
  6. ^ a b Alcock, Charles (14 October 2014). "New Gulfstreams Deliver More Range and Cabin Comfort". Aviation International News.
  7. ^ a b William Garvey (Mar 29, 2018). "Gulfstream Delivers More Range Than First Promised". Aviation Week & Space Technology.
  8. ^ a b "Gulfstream Introduces New Aircraft Family" (Press release). Gulfstream. October 14, 2014.
  9. ^ a b c Kate Sarsfield (16 Aug 2017). "G500 edges closer to certification milestone". Flightglobal.
  10. ^ a b "Gulfstream G500 Advances, On Track for 2017 Approval". Aviation International News. September 29, 2016.
  11. ^ Stephen Trimble (22 May 2017). "Gulfstream stays on track with G500 flight test". Flightglobal.
  12. ^ a b Mark Huber (August 24, 2017). "Gulfstream Continues To Make Progress on G500, G600". AIN.
  13. ^ a b c Murdo Morrison (10 Oct 2017). "Gulfstream announces range extensions for G500 and G600". Flight International.
  14. ^ a b J.E. Burnside (October 9, 2017). "Gulfstream: G500/600 Performance Exceeds Original Specs". AIN.
  15. ^ a b Samantha Cartaino (May 28, 2018). "Gulfstream's G500 Closes in on Type Certification". AIN online.
  16. ^ "Gulfstream G500 Earns Both Type And Production Certificates From U.S. Federal Aviation Administration" (Press release). Gulfstream. July 20, 2018.
  17. ^ Stephen Trimble (25 July 2018). "Supplier dispute will slow Gulfstream G500 deliveries". Flightglobal.
  18. ^ Matt Thurber (November 13, 2018). "Gulfstream First to Certify EFVS Landing System". AIN online.
  19. ^ Kate Sarsfield (2 Oct 2018). "Gulfstream acquires G500 and G600 nacelle line from Nordam". Flightglobal.
  20. ^ Niles, Russ (17 December 2016). "G600 First Flight". AVweb. Retrieved 19 December 2016.
  21. ^ Chad Trautvetter (May 9, 2017). "Gulfstream Flies Third G600, On Track for 2018 EIS". Aviation International News.
  22. ^ "NBAA: Gulfstream unveils G600 range increase". Flightglobal. 15 Oct 2018.
  23. ^ Chad Trautvetter (August 21, 2018). "Nearing FAA Nod, G600 Starts Field-performance Tests". AIN online.
  24. ^ Molly McMillin (Oct 15, 2018). "Gulfstream Announces Range Increase For G600". Aviation Week Network.
  25. ^ a b c d e "Pilot Report : Gulstream G500". Business & Commercial Aviation. Aviation Week. October 21, 2016.
  26. ^ a b "Analysis: Gulfstream G600 technical description". Flight Global. Oct 24, 2016.
  27. ^ a b "Gulfstream Unveils G500 and G600". Aviation Week. Nov 1, 2014.
  28. ^ Mike Gerzanics (22 May 2018). "Analysis: Gulfstream raises super-large bar with G500". Flightglobal.
  29. ^ Matt Thurber (August 24, 2018). "Pilot Report: Gulfstream G500". AIN online.
  30. ^ Fred George (Oct 19, 2016). "Symmetry Flight Deck Powered By Honeywell". Business & Commercial Aviation. Aviation Week.
  31. ^ "G500 Specifications" (PDF). Gulfstream. 2016.
  32. ^ "G600 Specifications" (PDF). Gulfstream. 2015.

External links[edit]