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Polar with spoilers extended?



 
 
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  #25  
Old October 23rd 07, 08:00 PM posted to rec.aviation.soaring
John Smith
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Posts: 256
Default Duo Dive-brakes ( Polar with spoilers extended?)

John Galloway schrieb:

The manual says the give a glide angle of 6.7:1 (which
fits with my measurements of 800fpm descent rate) at
approach speed


Very interesting, indeed:

JAR 22.75 Descent, approach
It must be shown that the sailplane has a glide
slope not flatter than one in seven at a speed of
1·3 VS0 with air brakes extended at maximum
weight.
 




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