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据英国《国际飞行》1995年12月20—1996年1月2日报道,英国航空公司的一架波音777在预交付试飞时发生发动机喘振,从而使GE90波音777开始进行双发延程（ETOP）试验的计划受到影响。喘振是一架编号为WA080的波音777作高迎角飞行驾驶杆振动器试验期间出现的,虽然发动机的喘振自动消除,但风扇研磨带与风扇叶片的损伤比预计的要大。波音公司用孔控仪对发动机进行检查,没有发现核心机有大的损伤,而且在风扇上未发现磨损。 目前GE公司正在进行地面试验,并准备进行一系列试飞,以便找到引起喘振的原因,该
According to British “International Flight” December 20, 1995 - January 2, 1996 reported that a Boeing 777 British Airways engine surge occurred in the pre-delivery test, so that GE90 Boeing 777 began dual-stroke ETOP) trial plan affected. Surge is a Boeing 777, WA080, made during a high-angle-of-flight pilot shaker test period. Although the engine surge is automatically eliminated, the fan lap and fan blades are harder than expected. The Boeing Company checked the engine with a hole gauge, found no major damage to the core machine, and found no wear on the fan. At present, GE is conducting ground tests and preparing for a series of flight tests to find out the cause of surge