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Old 11-12-2017, 07:11 PM   #1
williehayesjr
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Why can't I ever land on the two rear wheels. I seems as though I always land on one of the rear two wheels? Am I going too fast or too slow (160 knots)?
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Old 11-12-2017, 08:18 PM   #2
Cap'n kamikaze
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Try to slow it down to about 140, or even 130, and keep wings level (may not be possible in cross wind)
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Old 11-12-2017, 09:41 PM   #3
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Approach with 21 units aoa, 3deg glideslope. Flare when in ground rush.

See if this helps, study it carefully:

https://www.youtube.com/watch?v=3Jrh6BxbavI

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Why can't I ever land on the two rear wheels. I seems as though I always land on one of the rear two wheels? Am I going too fast or too slow (160 knots)?
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Old 11-17-2017, 02:38 PM   #4
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Most of the time you're not going to be landing heavy, you'll be either out of weapons, or have few left, and you'll have used a fair amount of fuel, in that vid it's at nearly full internal fuel, so the approach is naturally a bit faster than most cases.
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Old 11-17-2017, 05:39 PM   #5
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That video is rather old ... it used to be a lot easier to land the F-15, now, apart from the Spit, its the toughest to keep on the runway!
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Old 11-17-2017, 05:53 PM   #6
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Really? I just roll out and it goes straight by itself ... except when crosswinds. I have a pretty hefty rudder curve though.
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Old 11-17-2017, 05:55 PM   #7
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The video is appropriate. The difference between heavy and light in this case is the timing of the flare. The speed is irrelevant because you'll be keeping 21 uAoA on approach, which will set the speed 'by itself'.

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Originally Posted by Cap'n kamikaze View Post
Most of the time you're not going to be landing heavy, you'll be either out of weapons, or have few left, and you'll have used a fair amount of fuel, in that vid it's at nearly full internal fuel, so the approach is naturally a bit faster than most cases.
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Old 11-17-2017, 06:29 PM   #8
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To keep the descent rate and therefore the glide slope the same while lighter you will end up flying slower.
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Old 11-17-2017, 07:25 PM   #9
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If you weigh less you can fly slower and maintain the same ROD, and therefore the same glide slope, you're forgetting that weight is a factor, less weight means you only have to generate less lift, and you can do that by either flying slower, or lowering your AOA.
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Old 11-17-2017, 07:37 PM   #10
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Maintain the 21uAoA on 3 deg glideslope, speed adjusts to what it needs to be for the given weight. That's the basic eagle landing technique, right by-the-IRL-book.
The only calculation you have to make now wrt weight is to ensure you've got enough runway.

So, you're right about the effects, but effects are not technique.
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