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777's strange surfaces

Featured Replies

Hello all, I was recently watching a video on another post and I noticed those moving surfaces that seem to be part of the flap/slat system but that I've never noticed before. They seem to be controlled somehow independently from the flaps as they extend and retract and move to different angles on takeoff and landings. They are situated just above the engine nacelles and form the ideal link between near wing and far wing flaps. Can anyone explain me what they are and how they work? and Will their movement and action be modelled in the PMDG 777?

The video is here and you can notice them at 13.45min and again on approach (nice and rainy, you can tell it's the bloody English summer lol) from 58.50min.

Thank you all in advance!

Matteo Capocefalo, MED1473

Matteo Capocefalo

MED1473

That is just the inboard aileron, or flaperon would be the more appropriate term for the 777. I know they extend with the flaps for takeoff to add some extra lift. But for the most part they just help bank the aircraft.

~William Genovese~

  Boeing777_Banner_Pilot.jpg         KAB200_sig3.jpg

Ryan said they've modeled everything when my video was previously posted. Which I'm extremely happy with! The 777's wing surface movements are one of the things I love most.

Boeing777_Banner_Betateam.jpg
 

- Luke Pabari

  • Author

Oh thanks guys!! Bit of a dumb question but better asking the obvious when in doubt no?

Sorry for not quoting you on the video Luke too.

Mat

Matteo Capocefalo

MED1473

Oh thanks guys!! Bit of a dumb question but better asking the obvious when in doubt no?

Sorry for not quoting you on the video Luke too.

Mat

 

What? No no I didn't mean you have to hehe :-)

Boeing777_Banner_Betateam.jpg
 

- Luke Pabari

I love the spoiler logic of this aircraft! As the speed brake handle is increased, the outer 2 or 3 spoilers deploy almost entirely, and then the 3rd inboard begins to extend. I hope this behavior has been fully modeled. What i'm talking about happens at 0:56:33

Mitch Brown

Private Pilot | Aerospace Engineering Major

I love the spoiler logic of this aircraft! As the speed brake handle is increased, the outer 2 or 3 spoilers deploy almost entirely, and then the 3rd inboard begins to extend. I hope this behavior has been fully modeled. What i'm talking about happens at 0:56:33

 

Yeah I love that part too. Don't doubt for a second it won't be! :-) - With this Aircraft I'll be replaying my Take-off's and Landing's for the pax view!

Boeing777_Banner_Betateam.jpg
 

- Luke Pabari

Hello MED1473,

 

this what you see there is the so called droop position of the inboard aileron. This will assist the trailing edge flaps

when they are extended as a lift device. And that inboard aileron is mainly used for high speeds plus the flight spoilers.

In low speed situations the outboard aileron will be in use.

 

Greeting,

 

Sven Wendel

Sven Wendel

I like it ! Great channel !

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