Acceptable EGT increase due to FOD screen?  
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All Forums >> RC Airplanes >> RC Jets >> Turbine Clinic >> SimJet Turbine Direct Support >> Acceptable EGT increase due to FOD screen?
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Acceptable EGT increase due to FOD screen? - 9/7/2004 6:21:31 AM   
Phil Cole



Posts: 755
Joined: 1/27/2002
From: Redwood City, CA, USA
Status: offline 		Is there any guidance on what would be an acceptabe increase in EGT due to the fitting of a FOD screen to a 1200 SP

I made one from a tea strainer with fairly fine mesh.

At idle, EGT increased from 580 C to around 600 C. At 160,000 RPM, EGT increased from 650 C to 680 C or maybe a bit more. Ambient at the time was well into the 30s, maybe even 40 C.

I can look around for a coarser mesh, but I suspect there's always going to be some amount of EGT increase when the screen is installed.

< Message edited by Phil Cole -- 9/6/2004 10:22:07 PM >
       Post #: 1

RE: Acceptable EGT increase due to FOD screen? - 9/7/2004 12:51:41 PM   
KevinM



Posts: 285
Joined: 1/8/2002
From: Toronto, ON, CANADA
Status: offline 		Hi Phil,

Ideally, of course we'd like to see no rise at all. In reality, however, it may take a mesh that is so coarse that it provides little to no protection at all. You should be okay with the screen you've got, but it's probably still worth trying something a hair coarser to see how much of that increase you can shave off.


_____________________________

Kevin McLeod

(in reply to Phil Cole)
       Post #: 2

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