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greenleaf greenleaf
 
January 16, 2009 05:53 AM

Why don't jet engines have a protective grating?

Why don't jet engines on airplanes have a protective grating against birds, kind of like some trains have for cows? Wouldn't making that standard be preferable to losing hundreds of lives and millions of dollars to downed planes each year?
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jazz jazz
 
 January 16, 2009 06:30 AM
It appears that there has not been a design that wouldn't cause drag or reduce thrust. Having a piece in front of the engine might cause concern that it would damage the engine if it failed, structurally, or just add to the mess if somethign hit it hard enough. Wikipedia gives a great account of preventative measures under FOD -- foreign object damage (or debris):
http://en.wikipedia.org/wiki/Foreign_object_damage
Source(s):
http://www.timesonline.co.uk/tol/news/world/us_and_americas/article5526723....
http://en.wikipedia.org/wiki/Foreign_object_damage



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drmatt drmatt
 
January 16, 2009 03:53 PM
Getting a bird or other object caught in the engine is a low enough probability at this point that it doesn't justify the cost/manpower to create/manufacture a solution.

Here in the US, we tend to be reactive with our money rather than proactive.

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