Contents
How much air does a GE90 move?
From this answer a GE90: has a mass flow rate of 1,350 kg/s at take-off and 576 kg/s at cruise (at 10.668 km = FL350). It doesn’t need to move at all to have air flowing through it. At stand still, the rotating compressor blades will suck air in.
How efficient is the GE9X?
The GE9X should increase fuel efficiency by 10% over the GE90. Its 61:1 overall pressure ratio should help provide a 5% lower thrust specific fuel consumption (TSFC) than the XWB-97 with maintenance costs comparable to the GE90-115B. The bypass ratio is planned for 10:1. The fan diameter is 134 in (340 cm).
What is the mass flow rate of a GE90?
1 Answer 1. According to The GE90 – An Introduction, the GE90 has a mass flow rate of 1,350 kg/s at take-off and 576 kg/s at cruise (at 10.668 km = FL350). The CF6 has a mass flow rate of 591 kg/s at take-off. Exhaust velocity isn’t generally quoted, perhaps because it only bears a loose relation to the performance characteristics of the engine.
How much thrust does a GE90 engine have?
Rated at 94,000 lbs. of thrust, the GE90-94B engine builds on the proven success of the early GE90 engine models and powers the Boeing 777-200 and 777-300 aircraft.
Can a GE90 engine be used on a 777?
GE90 engines can only be airfreighted in assembled form by outsize cargo aircraft such as the Antonov An-124 ‘Condor’, presenting unique problems if a 777 was stranded in a place without the proper spare parts. The GE90 is being used as the platform for development of new GEnx engine which will power the Boeing 787, 747-8.
What is the specific impulse of a GE90?
Looking specifically at the GE90, we see that it has take-off SFC (specific fuel consumption) of 7.9 mg/N-s. Using the formula given in paragraph 4 of the Wikipedia article Specific Impulse we get a specific impulse of 12,285 s. If we use the cruise SFC of 15.6 mg/N-s, we get a specific impulse of 6,536 s.