Cobra Turn?

[theropod]

while discovering flanker capabilities, i found that variation of pughacevs cobra but i couldnt perform it.

you can read here: http://en.wikipedia.org/wiki/Cobra_Turn

it seems our flanker's rudder is not effective enough to perform this manouevre or i am doing something wrong.

if this is cobra turn and again if i am not wrong ,this is the most recent cobraturn performed with su-35 at paris airshow 2013.

manouevre starts at 3:13

and here is another example which was performed earlier:

starts at 2:55

yes, i know those are su-35s but according to cobra turn information, su-27 can do the same manouevre.

is there anyone could do that?

 

thanks.

Edited November 17, 2014 by theropod

[Nooch]

Don't forget that the cobra turn is performed by a Su-35 which has thrust vectoring...

[theropod]

Don't forget that the cobra turn is performed by a Su-35 which has thrust vectoring...

 

no i didnt forget, if you read carefully.

 

''The Cobra Turn is a fighter aircraft maneuver. It is a variation on the Pugachev's Cobra where the aircraft performs the pull-up, but instead of returning to level flight applies rudder or thrust vectoring and turns downward. ''

 

i asked because according to wiki it contains su-27.

Edited November 17, 2014 by theropod

[archer86]

When I pull up the aircraft to 90°, rudder or elevator don't work even if I try to support it with engine. In the end nose tilt forward down.

[theropod]

When I pull up the aircraft to 90°, rudder or elevator don't work even if I try to support it with engine. In the end nose tilt forward down.

 

same for me and i tried it on different angles but couldnt perform.

like in a deltawing i try opposite elevator push back to turn but aircraft wants to move forward and not allow to do this.

maybe su-27 cant do this maneouvre like updated variants and manouevre might not be end stable like shown in the videos. side spins may take us to death(more excercise and pilot skills may need):)

but there must a be way to do.

Edited November 16, 2014 by theropod

[esb77]

You'd probably need differential throttle settings to do this. While in a high attitude position the vertical stabilizers are going to be in disturbed airflow, and what airflow there is will be close to 90 degrees off of the direction the rudders would need in order to give yaw control.

 

In order for rudders to give good yaw control you'd need to reestablish relative airflow in the nose to tail direction, and have regained a bit of airspeed.

 

If you want to try it you should cut throttle on one engine to idle, and have the other at 100% either at or just before you reach maximum pitch for your cobra maneuver. Rudder yaw control is only going to come back at, or slightly after the exit from the maneuver.

 

My HOTAS doesn't have a split throttle so I haven't tried yaw control with the engines yet. At least not in aerobatic maneuvers.

 

 

Actually, in that second video at 2:55 you can see from the smoke that the rudders are in disturbed air, they're definitely doing it with some combination of differential throttle and/or thrust vectoring.

Edited November 17, 2014 by esb77

[theropod]

i have g940 but i couldnt perform it. i supported the maneouvre with one engine but coudnt make it.

 

same maneouver starts at 3:12 but different camera angle on same video Edited November 17, 2014 by theropod

[archer86]

For me ,no way to perform it.

Edited November 17, 2014 by archer86

[theropod]

For me ,no way to perform it.

 

neither i do for now but more practice will show.:)

 

 

'' The Cobra Turn first gained widespread attention after it was performed by the Sukhoi Su-27, Su-35 and Su-37 at various European airshows''

 

note:

i couldnt find any demo video which su-27 has performed this manouevre as written on wiki.

i had watched lots of su-27 demo videos dated from 1989 to nowadays but none of them perform cobraturn.

i am in doubt about cobraturn information on wiki.

Edited November 17, 2014 by theropod