cctv健康之路主持人:寻找CFM56发动机系统分析（英文）

http://books.google.com/books?q=about+CFM56+Engine+system&oi=print

http://www.geae.com/engines/commercial/cfm56/index.html
The advanced CFM56-7 engine is continuing the CFM International tradition of aviation industry leadership by providing customers with state-of-the-art engines that enable them to remain competitive on the tough international market.

The CFM56-7 was developed to provide Next-Generation 737 operators with higher thrust, improved efficiency, and lower maintenance costs than its predecessor, the CFM56-3. After five years of revenue service, the CFM56-7 is delivering on that promise while providing industry-leading reliability.

The CFM56-7, rated from 18,500 to 27,300 pounds takeoff thrust, has achieved outstanding reliability since its entry into service. The engine has been able to achieve outstanding rates in very demanding circumstances. For example, Southwest 737s, which have the highest utilization rate of the fleet, accumulate an average of 13 flights per day.

This reliability made the CFM56-7-powered 737 the first aircraft in its class to be granted 180-minute Extended-Range, Twin-Engine Operations (ETOPS) approval by the U.S. Federal Aviation Administration. ETOPS is defined as the number of minutes flying time from a suitable airport that a twin-engine aircraft may operate in the event that one engine becomes inoperable. The approval gives operating airlines far greater route-scheduling flexibility.

The benefits of the CFM56-7-powered 737 are being applied to military customers as well. The U.S. Navy has selected a CFM56-7-powered 737 variant, designated the C-40, for its Unique Fleet Essential Airlift Replacement Aircraft program. The Navy has ordered and received six aircraft to replace its fleet of C-9 airlifters. The latest AEW&C, also known as the Wedgetail, an early warning system aircraft based on the 737-700, has been ordered by Australia and Turkey.