Falcon Jets are known for their class leading fuel efficiency and the Falcon 5X will be no exception. No other large-cabin aircraft, except for Dassault's own Falcon 2000S and 2000LXS, should squeeze more miles out of a pound of jet fuel on equal length trips.

One reason is the Falcon 5X's Mach 0.80 design cruise speed, which is relatively placid by current standards. Some large-cabin business aircraft makers now tout cruise speeds of 0.85 to 0.90 Mach, shaving as much as an hour off of longer trips.

The Falcon 5X easily can speed up to 0.85 Mach, but doing so increases fuel consumption by close to 9% and shortens max range by 450 mi. Dassault's market research, though, indicates that the most likely Falcon 5X buyers will value cabin comfort, range and price above the need for speed.

Having 5,200 nm of range at 0.80 Mach, the Falcon 5X will be able to fly eight passengers from London to Tokyo, Beijing to Minneapolis or New York to Tel Aviv in 11 hr. 30 min. At 0.85 Mach, it will be able to fly from London to Houston, Detroit to Moscow or São Paulo to Lisbon in under 10 hr.

Glance please at the accompanying specifications box. The Falcon 5X will have a favorable power-to-weight ratio and relatively low wing loading for a large-cabin aircraft with slats. It should offer virtually the best takeoff field length performance of any aircraft capable of flying 5,200 nm.

Dassault is striving to make the 5X its most reliable and most maintainable business jet yet. It will be fully MSG-3-compliant and scheduled maintenance will come at 800-hr. or 12-month intervals. Custom-tailored maintenance programs will be offered to operators.

Extensive high-stress, high-cycle testing of components and systems should minimize growing pains associated with early serial number airplanes. Dassault also is developing a new onboard maintenance monitoring system that will watch up to 10,000 parameters, not unlike the orange flight test boxes bolted into the aircraft for development work. Aircraft health signs and symptoms will be broadcast back to Dassault in real time for analysis. Warranty coverage will be more extensive than with previous Falcon Jets.

Performance and efficiency numbers notwithstanding, the Falcon 5X's trump card is cabin size. No other purpose-built business jet priced less than $55 million equals it.

The Falcon 5X is the most technically advanced civil jet from Dassault, but all of its new systems have been wrung out on other aircraft. Almost nothing on the aircraft is “bleeding edge” technology that might risk the aircraft's spending excessive time in the hangar. Wild frequency AC electrical systems have been used on business aircraft for more than 15 years. The Falcon 7X pioneered the use of digital flight controls on board a purpose-built business aircraft six years ago. The hydraulic system is a basic dual-redundant design with two extra subsystems to provide triple-redundant hydraulic power for the flight control actuators.

Most notably, the Falcon 5X provides a clean-sheet foundation for larger and longer range Falcon Jets, ones that will compete directly against the newest de–signs being developed by Bombardier and Gulfstream. As such, the Falcon 5X isn't just the latest business aircraft to be announced by Dassault, it's also a milestone in the history of the company. It also marks the end of the trijet era at Dassault and the beginning of a whole new line of twin-engine large-cabin aircraft from the French firm that will be more comfortable, more capable and more cost-effective to operate. Construction of the first flight test aircraft is well underway. First flight is slated for the first half of 2015.

Tap herein the digital edition of B&CA

for an interactive look at the Falcon 5X's features, or go to AviationWeek.com/falcon5x

Dassault Falcon 5X Preliminary Specifications
B&CA Equipped Price $45,000,000
  Wing Loading 89.3
  Power Loading 3.04
  Noise (EPNdB) NA
Seating 3+8/19
Dimensions (ft./m)
  Length 82.6/25.2
  Height 24.5/7.5
  Span 85.1/25.9
  Length 44.0/13.4
  Height 6.3/1.9
  Width (Maximum) 8.2/2.5
  Width (Floor) 6.8/2.1
  Engine 2 Snecma Silvercrest
  Output/Flat RatingOAT°C 11,450 lb. ea./ISA+15C
Weights (lb./kg)
  Max Ramp 69,800/31,661
  Max Takeoff 69,600/31,570
  Max Landing 66,100/29,983
  Zero Fuel 43,500/19,731
  BOW 38,170/17,314
  Max Payload 5,330/2,418
  Useful Load 31,630/14,347
  Executive Payload 1,600/726
  Max Fuel 28,200/12,791
  Payload With Max Fuel 3,430/1,556
  Fuel With Max Payload 26,300/11,930
  Fuel With Executive Payload 30,030/13,622
  Mmo 0.900
  FL/Vmo FL 270/370
  PSI 9.9
  Time to FL 370 NA
  FAR Part 25 OEI Rate NA
  FAR Part 25 OEI Gradient NA
Ceilings (ft./m)
  Certificated   51,000/15,545
  All-Engine Service ≥41,000/≥12,497
  Engine-Out Service NA
  Sea-Level Cabin NA
  FAR/EASA Part 25 Scheduled for 2017