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ＰＷ４０９０开始试验普·惠公司正在试验它的ＰＷ４０９０涡扇发动机，这种发动机是ＰＷ４０００型最新的加大推力型，额定起飞推力４００ｋＮ，它将作为具有更大起飞重量的波音７７７－２００双发宽机身喷气式客机的动力装置。公司希望１９９６年年中得到美国联邦航空局...
PW4090 Pratt & Whitney is testing its PW4090 turbofan engine, the newest thrust-type PW4000 with a nominal take-off thrust of 400kN, which will be used as a Boeing 777-200 with a larger take-off weight Fuselage passenger aircraft power plant. The company hopes to get FAA by mid-1996 ...