Dassault Falcon 6X

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Falcon 6X
Dassault Falcon 6X.jpg
Role Business jet
National origin France
Manufacturer Dassault Aviation
First flight early 2021[1]
Introduction 2022[1]
Unit cost
$47 million (2018)[2]
Developed from Dassault Falcon 5X

The Dassault Falcon 6X is a large, long-range business jet under development by Dassault Aviation in France.

Development[edit]

Launch[edit]

Dassault Falcon 5X Model at the 2015 Paris Air Show

Design work began in 2006 under the codename SMS for super-midsize, and was envisioned to compete with the Hawker 4000, the Bombardier Challenger 300 and the Gulfstream G200 or the Embraer Legacy 600 with a 3,400 nmi (6,297 km) range. Few details were publicized, except that the model was to be powered by two 10,000-pound-thrust Rolls-Royce RB282 engines.[3] [4]

The project was revamped after the 2008 recession when demand for super midsized and smaller aircraft decreased dramatically, while demand for the large-cabin, long-range models remained vigorous.[3] In 2009, the design was re-evaluated and the engine choice was reassessed.[5]

Engine selection[edit]

Falcon 5X roll-out on June 2, 2015

The 5X was unveiled at the National Business Aviation Association's annual convention on October 21, 2013, to be powered by two Snecma Silvercrests.[3][6] Compliant Silvercrest engines were originally planned for the end of 2013 but technical issues led Safran to postpone them to the end of 2017, leading to delay the 5X introduction from 2017 to 2020, and the high pressure compressor issues in the fall of 2017 delayed it further with performance shortfalls, preventing a 2020 service entry.[7] On 29 January 2016, Dassault Aviation confirmed a two-year delay and production freeze on the Falcon 5X because of ongoing problems with the Snecma Silvercrest engine.[8] As Dassault endured a near three-year delay to 2020 with 12 cancellations in 2016, it demanded compensation from Safran for the engine delays.[9]

Flight testing[edit]

Planform view on Dassault Falcon 5X maiden flight

After ground tests in spring 2017 including low and high speed taxi, the 5X made its first flight from Bordeaux–Mérignac Airport with a preliminary version of the engines on July 5, 2017.[10] The preliminary flight tests were intended to streamline the development program, leading to full flight testing in 2018. That program was planned to fly with certifiable engines for flight validation and type certification, "limiting the consequences of the four year engine development delay as much as possible".[10] It was then scheduled to enter service in 2020.[11]

In October 2017, the prototype went through 50 flight hours, testing system performance and basic handling qualities. Dassault then announced the aircraft's service introduction could be further delayed after Safran discovered high-pressure compressor response problems at high altitudes and low airspeeds on its flying testbed in San Antonio. Dassault did not rule out switching its engine supplier at that point.[12] The prototype reached Mach 0.8 and 41,000 ft.[13]

Re-engining[edit]

On 13 December 2017, Dassault abandoned the Silvercrest due to technical and schedule risks, ending the 5X development. In its place the company launched a new Falcon model with the same fuselage cross section, Pratt & Whitney Canada engines and a 5,500 nmi (10,200 km) range, planned for a 2022 introduction.[7] The new jet will use Pratt & Whitney Canada PW800s, already powering the Gulfstream G500/G600.[14]

The design was unveiled in February 2018, is forecast to make its first flight in early 2021 and begin deliveries in 2022.[1] Dassault hopes to launch a larger and longer-range variant of the 6X, to compete with the 7,700nm (14,300km)-range Bombardier Global 7500 and the 7,500nm-range Gulfstream G650ER.[15] By October 2018, Dassault had started construction of the lower wing and rear fuselage parts.[16] On 6 September, Dassault Aviation and Safran ended their dispute with US$ 280 million in compensatory damages paid by Safran to Dassault.[17] By February 2019, its PW812D variants had accumulated 120h of flight tests.[18] By May 2019, the design was frozen, the engines had 1,000 h of test time, and assembly was expected in 2020 for an on-track program.[19]

Design[edit]

Falcon 6X mock-up at Paris Air Show 2019
Falcon 6X cabin mock-up

The Falcon 6X is largely based on the Falcon 5X aerodynamics and systems, validated during its preliminary flight test program, but it is optimized to take advantage of its 13,000–14,000 lbf (58–62 kN) PW812D engines for a longer cabin and a greater 5,500 nmi (10,200 km) range, a Mach 0.90 top speed and a Mach 0.85 cruise. Its cabin is 12.3 m (40 ft) long, can accommodate 16 passengers in three zones with 29 windows including a galley skylight and is 1.98 m (78 in) high by 2.58 m (102 in) wide, the largest purpose built business jet cross section.[1]

A front-fuselage extension makes its cabin 51 cm (20 in) longer.[20] The Falcon 6X reinforces the 5X new 70.7 m2 (761 sq ft) wing and keeps its digital flight control system and Honeywell Primus Epic EASy III flight deck. The new engine fans will have a diameter of 112–15 cm (44–6 in) shorter than in the Gulfstreams, and with four low-pressure turbine stages instead of five, engine weight is reduced by 91 kg (200 lb). Its empty weight increases by 1,030 kg (2,270 lb) or 5.7%, from 18.1 to 19.2 t (40,000 to 42,300 lb), due to heavier engines, fuel system and structural reinforcements.[21]

Specifications[edit]

Data from Dassault Aviation[22]

General characteristics

  • Crew: 2
  • Capacity: 16 passengers
  • Length: 25.68 m (84 ft 3 in)
  • Wingspan: 25.94 m (85 ft 1 in)
  • Height: 7.47 m (24 ft 6 in)
  • Wing area: 70.7 m2 (761[21] sq ft)
  • Aspect ratio: 9.52
  • Empty weight: 19,187 kg (42,300[21] lb)
  • Gross weight: 20,830 kg (45,922 lb) max zero fuel weight
  • Max takeoff weight: 35,135 kg (77,459 lb)
  • Fuel capacity: 15,325 kg (33,786 lb)
  • Powerplant: 2 × Pratt & Whitney Canada PW812D turbofan, 59.9 kN (13,460 lbf) thrust each ISA+20°C Flat rated

Performance

  • Maximum speed: 685 km/h (426 mph, 370 kn) indicated air speed
  • Maximum speed: Mach 0.9
  • Cruise speed: 850 km/h (530 mph, 460 kn) Mach 0.8 long range cruise
  • Range: 10,186 km (6,329 mi, 5,500 nmi) 5,100 nmi at Mach 0.85
  • Service ceiling: 15,545 m (51,001 ft)
  • Approach speed: 109 kn (202 km/h) at typical landing weight
  • Takeoff distance: 1,670 m (5,480 ft) at MTOW, SL, ISA (balanced field)
  • Landing distance: 760 m (2,490 ft), FAR 91 at typical landing weight

See also[edit]

Related development

Aircraft of comparable role, configuration and era

Related lists

References[edit]

  1. ^ a b c d "Dassault Aviation Launches Falcon 6X" (Press release). Dassault Aviation. 2018-02-28.
  2. ^ Mark Phelps (February 28, 2018). "Dassault Unveils Falcon 6X". AIN.
  3. ^ a b c "Dassault Unveils Largest Falcon Jet: 5X". aviationweek. 21 October 2013.
  4. ^ "Few new details emerge on Dassault super-midsize jet". AINonline. 6 October 2008.
  5. ^ "Dassault rethinks SMS; questions engine choice". Aviation International News. 14 June 2009.
  6. ^ "Dassault Reveals New Falcon 5X Business Jet at NBAA". AINonline. 22 October 2013.
  7. ^ a b "Dassault confirms termination for 5X" (Press release). Dassault. 13 December 2017.
  8. ^ Murdo Morrison (29 Jan 2016). "Dassault confirms two-year delay for 5X". Flightglobal.
  9. ^ "Dassault demands compensation from Safran for Silvercrest delays". Flightglobal. 8 March 2017.
  10. ^ a b "Falcon 5X First Flight" (Press release). Dassault. July 5, 2017.
  11. ^ "Falcon 5X takes flight with preliminary Silvercrest engines". FlightGlobal. 6 July 2017.
  12. ^ Stephen Trimble (9 Oct 2017). "Dassault discloses new delay for Falcon 5X". Flightglobal.
  13. ^ Guy Norris (Oct 10, 2017). "Safran Engine Issues Cause Further Dassault Falcon 5X Delay". Aviation Week Network.
  14. ^ Kate Sarsfield (13 Dec 2017). "assault terminates Silvercrest contract; cancels Falcon 5X programme". Flightglobal.
  15. ^ Kate Sarsfield (24 July 2018). "Dassault positive on Falcon 6X and further developments". Flightglobal.
  16. ^ Max Kingsley Jones (15 Oct 2018). "NBAA: Dassault shows off Falcon 6X mock-up as programme progresses". Flightglobal.
  17. ^ "Signature of an amicable settlement with Safran" (Press release). Dassault Aviation. 2018-09-06.
  18. ^ Dominic Perry (28 Feb 2019). "Dassault on schedule with 6X business jet development". Flightglobal.
  19. ^ Ernest Arvai (May 20, 2019). "Falcon 6X Progressing towards 2021 First Flight". Airinsight.
  20. ^ Dan Thisdell (28 Feb 2018). "Dassault launches 6X as it bids to put 5X nightmare behind it". Flightglobal.
  21. ^ a b c Fred George (Mar 2, 2018). "Dassault's Falcon 5X Successor To Enter Service In 2021". Aviation Week & Space Technology.
  22. ^ "Falcon 6X". Dassault Aviation.

External links[edit]