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Powerful Prospects

机译:前景广阔

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摘要

As flight-testing of the Lockheed Martin F-35 Joint Strike Fighter accelerates, the pace of engine work is equally frenetic-Pratt & Whitney is starting qualification of a fix to the F135 turbine cracking issue and General Electric/Rolls-Royce is building the first production-representative F136 alternate engine. Cracks in the F135 low-pressure (LP) turbine first cropped up during powered-lift ground tests of an engine in short-takeoff-and-vertical-landing (Stovl) mode in August 2007. Pratt & Whitney started work on a fix, but hoped specific engine builds could continue to be used for Stovl flight tests. However, cracking in the third stage of the LP turbine struck again in February this year, during "proof tests" of an engine prior to its installation in BF-1, the first F-35B Stovl variant.
机译:随着洛克希德·马丁公司F-35联合打击战斗机的飞行测试的加速,发动机工作的节奏也同样疯狂。普拉特和惠特尼开始对F135涡轮机破裂问题进行修复,通用电气/罗尔斯·罗伊斯公司正在建造第一台具有生产代表性的F136备用发动机。 F135低压(LP)涡轮机的裂纹是在2007年8月以短距起飞和垂直着陆(Stovl)模式对发动机进行动力提升地面测试时首先出现的。Pratt&Whitney开始进行修复,但希望特定的发动机构造可以继续用于Stovl飞行测试。但是,LP涡轮机第三阶段的开裂在今年2月再次发生,这是在对发动机进行“验证测试”之前进行的,该发动机已安装在BF-1(第一个F-35B Stovl变型)中。

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