TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️

Adjusting the flaperons.

This video shows them operating as ailerons. I move the control stick side to side.

Note that at max deflection, the control surface moves above neutral position more than it moves below neutral position. This is the principle of differential ailerons. It helps reduce adverse yaw.

The first comment to this toot will be a video showing the motion of the flaperons as camber changing flaps.

#AvGeek #Aviation #ElectricAircraft #Homebuilt #Glider #DIY #EAA #Technology #Wing #Aileron #Flap #Flaperon

Nov 17 at 7:24pmWeb
Show threadTomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️Nov 17

This video shows the flapperons moving as camber-changing flaps. The two control surfaces move in unison. My flap control system has five settings. The central setting is flaps zero or flaps neutral. Two settings increase the camber more, which is suitable for low speed flight. Two settings decrease camber... this is when the two flapperons move upwards.... and this is suitable for higher speed flight.

#AvGeek #Aviation #ElectricAircraft #Homebuilt #Glider #DIY #EAA #Technology #Wing #Aileron #Flap #Flaperon

Show threadRachel BrindleNov 17
@KrajciTom I’ve never seen flaps that move upwards before, that was really odd to me. Is that common in gliders?
Show threadTomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️Nov 17

@younata

Yes. This helps maximize glide ratio (reduce sink rate) at higher speeds.

A common takeoff technique for a flapped glider, when using a tow plane launch, is to start the takeoff run with flaps negative. That gives the glider a little better roll authority at low speed. When you get up to about 50 knots, go to flaps positive and the glider gets airborne promptly.

Extra credit technique: also start the takeoff run with spoilers deployed. That alters the lift profile across the span, and gives another little boost to roll authority at the lowest speeds. Then rectract and lock the spoilers before you get to any sort of liftoff speed.

Show threadRachel BrindleNov 17
@KrajciTom ... I gotta take some glider lessons sometime. That's much more complex (and it sounds much more fun) than my take-off procedure, which is just pushing the throttle & mixture full forward, and holding back-elevator pressure to reduce the weight on the nosewheel.