RTF Skymasters

Now that we have two models with flaps, we though that a discussion about flaps was warranted. The aircraft available at RTF Skymasters with flaps are the P 51 Super Class (here) and the Cessna 182 Super Class (here).

Scale RC models are just that, smaller scale of full-size aircraft, and those use flaps. It is only natural that true scale models should have flaps too. The realism really kicks up a notch or two when you see a scale model with flaps deployed. Flaps can be great, almost turning a high performance model into a trainer for landings. Flaps can cause their own problems if used incorrectly.

Without getting too technical, when flaps are lowered they change the character of the wing and reduce stall speed. This allows for slower speed (and more controllable) landings while keeping more power in play if you need to abort the landing and go around.

It is a good idea to experiment with flaps at a safe altitude before using them for a landing. You need to know how the flight characteristics of your model change. Do not extent flaps at high speeds. Reduce speed first to avoid causing structural damage. Note that elevator input will be required when flaps are deployed to compensate for the nose rising upon deployment. Keep an eye on speed too. When flaps are deployed, drag increases and more power will be needed.

When landing with flaps, drop them incrementally on the approach. Be ready on the elevator and throttle to compensate. Full flaps would be deployed on final approach and the decent rate will get steeper. With practice, you will start seeing the perfect 3 point landings!

What about needing to abort the landing? DO NOT retract the flaps until you have safe altitude and speed. Retracting the flaps will cause the model to lose lift. Too close to the ground and you may be landing anyway, but not how you envisioned.

Flaps will increase the realism of your RC flying experience. Take the time to experiment safely and have fun.