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In February 2012, GE announced studies on a more efficient derivative of the GE90, calling it the GE9X, to power both the -8 and -9 variants of the new Boeing 777X.It was to feature the same 128 in (325 cm) fan diameter as the GE90-115B with thrust decreased by 15,800 lbf (70 kN) to a new rating of 99,500 lbf (443 kN) per engine. [1]
In chronological order, spacecraft are listed equipped with electric space propulsion. This includes both cruise engines and/or thrusters for attitude and orbit control. It is not specified whether the given engine is the sole means of propulsion or whether other types of engine are also used on a spacecraft.
Engine Origin Designer Vehicle Status Use Propellant Power cycle Specific impulse (s) [a] Thrust (N) [a] Chamber pressure (bar) Mass (kg) Thrust: weight ratio [b] Oxidiser: fuel ratio
A growth version of the LTS101 which it is designed to replace, [1] the HTS900 is in the 1,000 shp (745 kW) class. At the October 2018 NBAA convention, it was shown with two 200 kW (270 hp) electric generators for hybrid electric aircraft , and it can be developed up to 1 MW (1,300 hp), targeting a conversion efficiency of 98%.
An electric cycle engine uses electric pumps to pressurize the propellants from a low-pressure fuel tank to high-pressure combustion chamber levels, generally from 0.2 to 0.3 MPa (29 to 44 psi) to 10 to 20 MPa (1,500 to 2,900 psi). The pumps are powered by an electric motor, with electricity from a battery bank.
A development of the kit-built Epic LT, the E1000 aircraft features a cantilever low-wing, a 6.5 psi pressurized cabin with an airstair door just ahead of the rear seats, retractable tricycle landing gear and a single 1,825 hp (1,361 kW) Pratt & Whitney Canada PT6-67A turboprop aircraft engine, de-rated to 1,200 hp (895 kW) engine in tractor configuration.
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