About Viggen controls

[VireVolte_tigrou]

How it works ?

 

What I know :

-> Elevons work as standard elevons like any delta wings.

-> Canards controls is down to provide additional lift during landing and take-off.

 

What I don't know

-> Are the canards controls working as additional elevators ?

-> Are they helping for roll as extra ailerons ? (it seems not)

 

So, any informations about this (and more) is welcome ! :)

[shaggy]

The canards are used as small wings basically. there is no flaps on the main wings, the flaps are on the canards. the canards are static except for the trailing edge which is the flaps. you can see some pretty clear in the beginning of this video http://www.youtube.com/watch?v=EGSZMenGVrE

 

you can see some detail in this video also:

the whole trailing edge of the wing is a big aileron which moves when you manoeuvre the aircraft. so no flaps on the wings :)

[shaggy]

And I just have to show this video. Most have probably seen it before. but ehre is the swedish air force draken doing the cobra

. I talked to some of my old teachers. and this manouver was actually found by misstake by a pilot on an excercise but then later banned because if you dident do it right you came into a super stall and fell thousands of feet before you could gain control. but it looks darn cool :D no need for an Su-27 here! :P

[VireVolte_tigrou]

Thx.

So, just used as flaps ? I don't know if pilot controls it manually, but it seems to be automatic. Am I right ?

[shaggy]

I think they extend at slow speeds yes... but im not 100% sure. if you could animate it to the flaps argument anyway I think that would be the best

[Selector]

Canard controls

 

The trailing edge control surface on the canard works as a flap and is directly connected to the landing gear system. Maneuvering of the canard flap is not possible by the pilot exept via the landing gear handle. If memory serves me right, you can "trim" the flap angle on the ground by the mechanincs and is adjusted to the current weapons load.