As per the official Boeing 777 FCOM about control surfaces, they are called Flaperon. 

The name Flaperon comes from Flap + (High Speed) Aileron. So it's not only a highspeed aileron, it also has the function of a flap. On an Airbus it's called Aileron Droop. So Flaperon is Boeing only term.

Thanks Max for explaining.

 

Question: I've seen in a couple of pictures that the Flaperons droop when there's no hydraulic supply. Do the elevators also droop when the hydraulics are turned off?

Thanks Max for explaining.

 

Question: I've seen in a couple of pictures that the Flaperons droop when there's no hydraulic supply. Do the elevators also droop when the hydraulics are turned off?

Yes..

 

While talking about the elevators drooping on a 777, if you power the centre hyds, but not the left and right, the left elevator will be neutral, and the right elevator will droop down..

 

Looks interesting

 

 

On an Airbus it's called Aileron Droop. So Flaperon is Boeing only term.

 

Not quite. It is a general term, that Boeing happens to use and Airbus not.

 

Although it could be argued that aileron droop is something different. In fact, Boeing also uses aileron droop on the 777, but it signifies something different than a flaperon.

Cool thanks for explaining guys.

 

Fly UK - Head of Operations

 

Jordan McTiffin

 

 

Peter is right, my post wasn't clarifying enough.

Guys,

I had a question regarding the elevator droop: Parked on the ramp, I shut down the hydros, left to right, but the elevators are still centered after a while.

 

The flaperons and rudder have released pressure and loosened up. The 3 hydraulic systems show 50psi each.

 

Is there a check valve for the elevators that keep them aligned in the event of hyd pressure loss? Did I shut the system down wrong? Am I just impatient and need to wait longer?

 

I skimmed the books but couldn't find much about it.

 

Thanks

 

 

Am I just impatient and need to wait longer?

 

Yep.