Bombardier Global 6000 APU Starting Up Sound

The Bombardier Global Express is a large cabin, 6,000 nmi / 11,100 km range business jet designed and manufactured by Bombardier Aviation (formerly Bombardier Aerospace). Announced in October 1991, it first flew on 13 October 1996, received its Canadian type certification on 31 July 1998 and entered service in July 1999. Initially powered by two BMW/Rolls-Royce BR710s, it shares its fuselage cross section with the Canadair Regional Jet and Challenger 600 with a new wing and tail. The shorter range Global 5000 is slightly smaller and the Global 6000 is updated and has been modified for military missions. The longer range Global 5500/6500 are powered by new Rolls-Royce Pearl engines with lower fuel burn and were unveiled in May 2018. The larger and stretched Global 7500/8000 have longer ranges.

The Global Express is a high speed business/corporate aircraft with a range of 6,700 nmi (12,400 km) at Mach 0.80 (459 kn; 850 km/h), a 51,000 ft (16,000 m) maximum altitude and a 14 hours endurance. The semi monocoque airframe is made of lightweight aluminum alloys and composite materials. It has a low wing, tricycle landing gear and fuselage-mounted engines.

The Global Express was the business jet with the largest cabin, until being surpassed by the later Gulfstream G650. It can accommodate 12 to 16 passengers in three cabin sections: mostly a forward four-chair club section, a central four-seat conference grouping and an aft three-place divan facing two chairs. Most have a forward galley, crew rest chair and crew lavatory. The 10.3-psi cabin pressurization maintains a 4,500-ft. cabin altitude up to FL 450 and 5,680 ft. at the FL 510 ceiling. The cabin has an unobstructed length of 14.6 m (48 ft) while the floor is dropped by 51 mm (2.0 in) from the Challenger to increase width at shoulder level, while the windows have been repositioned and enlarged by 25%.

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An Auxiliary Power Unit or APU allows an aircraft to operate autonomously without reliance on ground support equipment such as a ground power unit, an external air-conditioning unit or a high pressure air start cart.

An auxiliary power unit (APU) is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft and naval ships as well as some large land vehicles. Aircraft APUs generally produce 115 V AC voltage at 400 Hz (rather than 50/60 Hz in mains supply), to run the electrical systems of the aircraft; others can produce 28 V DC voltage. APUs can provide power through single or three-phase systems.

The market of Auxiliary power units is dominated by Honeywell, followed by Pratt & Whitney, Motorsich and other manufacturers such as PBS Velká Bíteš, Safran Power Units, Aerosila and Klimov. Local manufacturers include Bet Shemesh Engines and Hanwha Aerospace. The 2018 market share varied according to the application platforms:

Large commercial aircraft:
Honeywell 70–80%, Pratt & Whitney 20–30%, others 0–5%
Regional aircraft: Pratt & Whitney 50–60%, Honeywell 40–50%, others 0–5%
Business jets: Honeywell 90–100%, others 0–5%
Helicopters: Pratt & Whitney 40–50%, Motorsich 40–50%, Honeywell 5–10%, Safran Power Units 5–10%, others 0–5%

On June 4, 2018, Boeing and Safran announced their 50–50 partnership to design, build and service APUs after regulatory and antitrust clearance in the second half of 2018. Boeing produced several hundred T50/T60 small turboshafts and their derivatives in the early 1960s.Safran produces helicopters and business jets APUs but stopped the large APUs since Labinal exited the APIC joint venture with Sundstrand in 1996.

This could threaten the dominance of Honeywell and United Technologies. Honeywell has a 65% share of the mainliner APU market and is the sole supplier for the Airbus A350, the Boeing 777 and all single-aisles: the Boeing 737 MAX, Airbus A220 (formerly Bombardier CSeries), Comac C919, Irkut MC-21 and Airbus A320neo since Airbus eliminated the P&WC APS3200 option.P&WC claims the remaining 35% with the Airbus A380, Boeing 787 and Boeing 747-8.