From: firstname.lastname@example.org (Andrew Chuang)
Subject: Re: FOD to an engine of a Falcon 20 (fwd)
Date: 03 Feb 95 01:47:29
Bruno Wendler (email@example.com) wrote:
: Last week, at Le Bourget in Paris, a Falcon 20 crashed because of an FOD
: to his right engine (caused probably by birds in the area).
: It seems to me that this is still a problem which affects Airliners.
: Is there something which could be done concerning changes in the engine
: design in order to prevent that these situations become to dangerous ?
For each engine certification, an engine must pass two major tests
related to FOD (Foreign Object Damage). The following is a brief list of
tests required for the B777 engines (PW4084, GE90, and Trent 800).
The tests required for different sizes of engines will be different.
1. Bird ingestion test:
a. 4 2.5lb birds in 1 second, the engine must:
* not lose more than 25% of the thrust
* be operating for another 20 minutes after the strike
b. 1 8lb bird, the engine must:
* contain any fragments
* no excess load
* be able to shutdown
* not start a fire
2. Blade-off test:
the fan case must be able to contain all fragments in a blade-off
| H Andrew Chuang firstname.lastname@example.org |