View Full Version : Can you do flaprons on a biplane?

07-14-2009, 07:47 PM
I have a GP SE5 and Spad. My brother has the Sopwith.

Anyway my father in law was over the other day watching us fly. He noticed how hot I come in to land and said it must be hard to land without flaps. It hit me I can do flaprons with my Futaba 6EX.

I'll have to pull off the wing and run another servo wire but don't want to go through the trouble if it isn't going to work or cause me to 'crash and burn'.:<:

07-14-2009, 08:18 PM
Flaps on that plane will be all the way out to the outer edges. Normal flaps are inboard.

Normally, a plane wants to have what's called washout, where the tips (ailerons) are pointing up a little. This causes stability at low speeds - helps control the plane at stall speed.

If you have them pointing down, as in a flap position, you get washin, and is considered to be very unstable, and will very likely cause a crash.

If it's coming in too hot, you MIGHT be able to move your CG further aft, a tiny bit at a time. A more tail heavy plane will (to a point) be able to land and fly slower than a nose heavy one.