GE90 Program Surpasses 15,000-Cycle Milestone
EVENDALE, Ohio - The GE90 program exceeded the 15,000-cycle mark this month in the most rigorous development and testing program in GE Aircraft Engines' history.
A GE90 program goal had been to reach 15,000 cycles by entry into service. An engine cycle begins when the engine starts and ends when the engine shuts down.
In addition, WA076, the GE90-powered Boeing 777 flight certification aircraft, completed 123 flights (358 hours, 55 minutes) flying out of Boeing Field in Seattle. FAA aircraft certification requirements completed recently include overall engine operability, engine altitude relight capability, noise testing, and nacelle cooling climbs.
WA077, the GE90-powered Boeing 777 ETOPS aircraft, has completed 73 flights (105 hours,12 minutes) flying out of Boeing Field and is expected to initiate ETOPS endurance flight testing later this month.
Engine 900102, the GE90 3,000-cycle ground test engine, has completed more than 2,300 ground test cycles at GE's Peebles, Ohio, test facility. It is forecast to complete the required 3,000 ground test cycles required for ETOPS in mid-September. The engine has completed all four of its FAA-required maintenance demonstrations.
In order to produce the industry's most reliable engine, GE is testing the GE90 with greater-than-required discipline and severity. Although certified at 84,700 pounds of thrust in February of this year, the GE90 has operated for more than 65 hours above 100,000 pounds of thrust.
The engine accumulated 228 hours in GE's own flight test program on the GE90/Boeing 747 flying testbed.
Certification of the 92,000 pound thrust GE90 growth engine is scheduled for May 1996, and entry into service is scheduled to coincide with the December 1996 introduction of the Boeing 777B. Eighty percent of all testing required for the GE90 growth engine was completed during the original GE90 certification program. Commonality is an inherent strength of the GE90 engine family, which means fewer customer expenditures for new training, tooling, inventory, and facilities as the engine family expands.
Snecma of France, FiatAvio of Italy, and IHI of Japan are revenue-sharing participants in the GE90 development program.