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Old Dec 23, 2012, 04:26 PM
av8ersteve is offline
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I did it...
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Question

Intake protection...


I have seen on some engines that they come with a screen to protect against sucking in debris into the engine. Is there a way I can make one of these for an air start? I have some ideas buy just wondering if someone here has already posted their idea. Once again, thanks .
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Old Dec 23, 2012, 05:40 PM
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310mph Kolibri T25 Swist
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Originally Posted by av8ersteve View Post
I have seen on some engines that they come with a screen to protect against sucking in debris into the engine. Is there a way I can make one of these for an air start? I have some ideas buy just wondering if someone here has already posted their idea. Once again, thanks .
Yeah, just mount the mesh more forward in the jet!

This is a Mig15 where the FOD guard is mounted approx 70cm infront of the turbine.



If the airplane doies not have air ducts it's probably a trainer with the engine mounted ontop of the airframe which virtually eliminates the need of a fod guard.
Old Dec 23, 2012, 06:22 PM
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You can only use one on an air start if you are using compressed air.
Old Dec 23, 2012, 06:24 PM
av8ersteve is offline
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FOD? What does that stand for? I'm thinking something like Foreign Object ???
Old Dec 23, 2012, 11:00 PM
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Originally Posted by av8ersteve View Post
FOD? What does that stand for? I'm thinking something like Foreign Object ???
Foreign Object Damage.


I run a FOD screen on all of my engines... other than my AMT air start. It's not good to suck things in the engine... but I watched a big stink bug get sucked into it last summer. The engine never missed a beat. (lol)
Old Dec 24, 2012, 10:35 AM
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They may be stinkbug proof but I've watched them suck up small stones and it wasn't a pretty sight
Old Dec 25, 2012, 01:14 PM
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Foreign Object Dabris.

Debris that can or has caused damage
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Old Dec 30, 2012, 11:17 PM
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FOD stands for Foreign Object Damage, just ask any full-scale jet pilot, especially a military jet pilot.

The acronym can be used in many ways, as a noun, adjective, verb.

"Pick up that FOD"

"You stinkin' piece of FOD"

"I'm going to FOD your beer if you call me that again"

Tom
Old Dec 31, 2012, 11:01 AM
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Actually it stands for both Debris and Damage.

Debris being what causes the Damage. They are more concerned with Debris, cause if you eliminate that! you will eliminate the Damage

Read on..http://fodsigns.com/fod-awareness/
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Last edited by vettster; Dec 31, 2012 at 11:15 AM.
Old Jan 07, 2013, 09:54 PM
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Originally Posted by Dr Honda View Post
Foreign Object Damage.


I run a FOD screen on all of my engines... other than my AMT air start. It's not good to suck things in the engine... but I watched a big stink bug get sucked into it last summer. The engine never missed a beat. (lol)
I know of one jet guy who has his hand suck into a AMT 450, not a pretty sight. The engine was on a test stand, a FOD screen might have prevented the injury.
Old Jan 09, 2013, 09:36 AM
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I know of one jet guy who has his hand suck into a AMT 450, not a pretty sight. The engine was on a test stand, a FOD screen might have prevented the injury.
Ouch! I would have hated to seen what that looked like. How much suction force is at the front of one of these engines?
Last edited by av8ersteve; Jan 09, 2013 at 01:41 PM.


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