Student BCP,
When flying at a thousand feet , targets on the ground appear to be closing with us slowly. It makes little difference what our airspeed or goundspeed is. When we get lower and closer, however, targets like the numbers appear to speed up.
The apparent brisk walk rate of closure approach makes use of this optical illusion to cause a gradual reduction in airspeed and groundspeed from about a quarter mile out and about five hundred feet up.
All we do is use elevator to keep this normal apparent brisk walk from speeding up on short final. We use the throttle to maintain glide angle.
Because we are slowing, to maintain the apparent brisk walk, and getting slower as we get lower and closer, we will have to keep adding more power.
If we maintain apparent speed with elevator and glide angle with power , it delivers us to the numbers slow enough to land with just a bit of flair. We have eliminated the need to round out and hold off. If a bit too fast, we will have to pull throttle before touchdown. If right on apparent brisk walk, we will pull power at touchdown.
In a strong headwind component, we will have little ground speed and higher airspeed. In a tailwind, we will probably go behind the power curve requiring lots of power to maintain glide angle.
Done correctly there we do not approach high ground effect stall speed until in low ground effect. If we get too slow and shake and mush, we add power to touch down softly.
If we have to round out or make a gravity thrust hold off, we know we need to go slower next time. Short final is where the apparent brisk walk becomes a stampede if we don't control the rate of closure with elevator.
I hope to make it up that way sometime. Have fun,
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