lift coefficient. It is based on the G650's wing design with the same 36° sweep. The G600's wingspan will be wider than the G500, allowing for of additional fuel. Both models have a new tail design based on the aerodynamic shape and systems of the G650's tail. 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. Engines The G500/G600 will be powered by the Pratt & Whitney Canada PW800 series turbofan engines (PW814GA for G500 and PW815GA 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. For the G500 in cruise, at FL400, ISA -5°C, total fuel flow is /h at M0.90/ TAS, /h at M0.85/ TAS. At FL450, Mach 0.90/ TAS and ISA -8°C, it burns /h. At Mach 0.90, TAS, the G600 burns per h at FL430, ISA-3°C and a weight of , compared to a per h book value. At Mach 0.85 TAS, the same G600 burns per h at FL470, ISA-10°C and a weight of , below the prediction. Systems 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. The auxiliary power unit is a Honeywell HTG400G. The cabin pressurization reaches . 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. The Honeywell Symmetry Flight Deck features four portrait main displays, three touchscreens on the overhead panel instead of stand-alone switches ; there are four force-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. Specifications See also References External links G500 2010s United States business aircraft Twinjets T-tail aircraft Aircraft first flown in 2015