The F16 LEF's is raised up 2 degrees . When ?

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saberrider

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Unread post05 Jan 2020, 21:17

The F16 LEF's is raised up 2 degrees if the aircraft go supersonic but first there is airflow over the aircraft wings not the jet itself.When happen that upward ?
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vilters

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Unread post05 Jan 2020, 22:46

Johnwill answered that one a while ago.

LEF are moving as are the stabs and the purpose if to move the pressure points while going supersonic.
(His explanation was better)
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saberrider

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Unread post05 Jan 2020, 23:15

Thank you .
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johnwill

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Unread post06 Jan 2020, 08:44

I don't remember what I said then, so I must be careful not to contradict myself.
The F-16 LEF normal position is 2 deg up. In normal up and away flying, two things make the LEF move down, AoA and Mach No. At low AoA and low mach, LEF stays at 2 deg up. At higher AoA or higher mach (up to 0.95) LEF will move down. Above 0.95 they don't move down from 2 deg up.
The TEF, with no roll command, stay at O deg below 0.95 mach, between 0.95 and 1.05 mach, move to 2 deg up, and stay there above 1.05 mach.
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saberrider

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Unread post06 Jan 2020, 17:27

Johnwill, thank you .

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