F-15 Air intakes. - ED Forums
 


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Old 07-27-2018, 01:14 PM   #1
ny3d1
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Default F-15 Air intakes.

I have a question regarding the F-15 Eagle. I have noticed that the air intakes on some models are not the same. Some face slightly downwards about 10 degree and other models are straight, facing forward. Is there a reason for this??
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Old 07-27-2018, 01:37 PM   #2
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They are independent for each engine, movable parts depending on the angle of attack, Mach number, etc. to feed the engines with optimum subsonic flow of air. Look at them during engine start to see for yourself.

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Old 07-27-2018, 02:53 PM   #3
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Short answer: they move.

Long answer;
Quote:
Located on the outboard sides of the aircraft center fuselage, the F-
15C/D has an automatic independent air induction system (fig. 18-2) for
each engine. The air induction system is comprised of first, second, third,
and diffuser ramps; airflow bypass door; three actuators; an air inlet control
(AIC), bleed air exit louvers, and foreign object screens. During engine
operation, the first ramp pivots up and down to vary the inlet opening
according to engine air requirements. The AIC automatically controls ramp
movement and geometric size of the air intake passageway.


https://forums.eagle.ru/showthread.php?t=57574
https://forums.eagle.ru/showthread.php?t=21166
https://forums.eagle.ru/showthread.php?t=187306
https://forums.eagle.ru/showthread.php?t=117260
https://forums.eagle.ru/showthread.php?t=52536
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Old 08-06-2018, 10:05 PM   #4
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When the F-15 gets tired, they droop a little... working as intended [NOT A BUG].
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Old 08-06-2018, 11:27 PM   #5
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Old 08-06-2018, 11:42 PM   #6
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That F-15 seems incredulous. What did you just say to it?
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Old 08-07-2018, 12:25 AM   #7
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Quote:
Originally Posted by zhukov032186 View Post
That F-15 seems incredulous. What did you just say to it?
Don’t look at me. Ask the guy down by its tail...
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Old 08-13-2018, 04:57 PM   #8
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Can you smell, what the F-15 is cookin?
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