flaperons are when both ailerons drop down as flaps but are still stearable-look at some heavy jets or military stuff and you will see the outer control surfaces on the wing(ailerons)drop down with the flaps also but they are still stearable when they are down-get on youtube and look up something like"carrier launch" or something and you will see the entire back of the wing is down like one giant flap-if you have a plane(rc)that doesnt have flaps, if you have the right Rx you can incorporate a flaperon mix and still get flaps out of a plane that doesnt have flaps"
Flaperons on a
Kitfox Model 3, built in 1991
A
flaperon is a type of
control surface that combines aspects of both
flaps and
ailerons. In addition to controlling the
roll or bank of an aircraft like conventional ailerons, both flaperons can be lowered together to function much the same as a dedicated set of flaps would. Both ailerons could also be raised, which would give
spoilerons.
The pilot has separate controls for ailerons and flaps. A mixer is used to combine the separate pilot input into this single set of control surfaces called flaperons. The use of flaperons instead of separate ailerons and flaps can reduce the weight of an aircraft. The complexity is transferred from having a double set of control surfaces (flaps and ailerons) to the mixer.
Many designs that incorporate flaperons mount the control surfaces away from the wing so as to provide undisturbed airflow at high angles of attack or low airspeeds.
When the flaperon surface is hinged below the trailing edge of a wing, they are sometimes referred to as "Junker Flaperons", from the
doppelflügel type of trailing edge surfaces used on a number of
Junkers aircraft of the 1930s, such as the
Junkers Ju 52 airliner, and
Junkers Ju 87 Stuka iconic World War II
dive bomber.
http://www.youtube.com/watch?v0eqPLpac&NR=1=NU_