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Impact of S-duct intake and intake blocker on Infrared signature

Can S-duct intake or intake blockers help reduce the infrared signature of aircraft?

  • Yes, very significant

    Votes: 1 33.3%
  • Yes but the effect is negligible

    Votes: 1 33.3%
  • No, they have no impact on the thermal signature

    Votes: 1 33.3%

  • Total voters
    3

Ronny

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We know S-duct and intake blocker can help reduce radar cross section of aircraft, because the engine fan blade are very reflective to radar wave.
But can S-duct intake or intake blockers help reduce the infrared signature of aircraft?
I found out a day ago that even the first fan stage can be quite hot so in theory, blocking the view to them could reduce the thermal signature.
Do anyone has any additional frontal thermal images of fighter to confirm or debunk this theory ?
F-15.PNG
1.PNG
 
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