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Old 10-12-2019, 02:12 PM
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Join Date: Jul 2008
Location: Cheshire, UK
Posts: 1,932

If its only a brake you want then what is shown in the video is quite adequate but note the small flap is taken to 60? degrees although a full 90 would be better at creating lots of drag - a true air brake.
My only comment on such a layout is that the turbulence it creates when fully applied could effect how well the elevator functions. An effect that was noted in the video although in my opinion wrongly attributed to the elevator linkage.
On full size gliders it is common for the air brakes to be positioned just far out along the wing so their turbulence does not effect the tail plane.
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