Takeoff in L-39

[Yo-Yo]

The desired stick work during rotation. As it is tought in RL. Not ideal but appropriate takeoff - pitch was fixed a little bit lower, so light stick pulling was required to get airborn.

 

http://forums.eagle.ru/showpost.php?p=2557530&postcount=203

 

The ideal takeoff is here

 

http://forums.eagle.ru/showpost.php?p=2557543&postcount=204

 

and the track (without garantee that it will be played correct :) )

 

http://forums.eagle.ru/showpost.php?p=2557508&postcount=202

 

 

The IAS gauge reading is broken a little in the current version so use Ctrl-Y to begin rotation at 145-150 IAS.

Edited November 17, 2015 by Yo-Yo

[Yo-Yo]

This is better taking in account lack of accelerations info :)

[OnlyforDCS]

Thanks for that Yo-Yo, although taking off in the L39 is a really a breeze actually :)

[Dr_Arrow]

Thanks Yo-Yo, I just wonder if this does reflect real life stick movement in L-39 during takeoff :)

[Yo-Yo]

Thanks Yo-Yo, I just wonder if this does reflect real life stick movement in L-39 during takeoff :)

 

Of course it does, because, regarding the increasing with speed authority of elevator and decreasing nose-down moments from the main gears reaction, you have to push the nose up, then release the stick to stop rotating inertia at the certain angle and with decreasing to zero reaction of the main gears with growing lift you have to return the stick to the trim position for 200 kph.

[grunf]

Thanks Yo-Yo! I kind of figured it out, but it's nice to have official "how-to". :D

[Dr_Arrow]

Of course it does, because, regarding the increasing with speed authority of elevator and decreasing nose-down moments from the main gears reaction, you have to push the nose up, then release the stick to stop rotating inertia at the certain angle and with decreasing to zero reaction of the main gears with growing lift you have to return the stick to the trim position for 200 kph.

 

Thank you very much for your answer and great work with L-39 Yo-Yo :thumbup:

The stick work in L-39 during take-off can be seen nicely in this video:

[j.sabo12]

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It can also be seen well in this video, although it's not exactly your standard take off. :)

 

The L-39, although it is very easy to fly, is difficult to master and fly exceptionally well by the numbers.

[Yo-Yo]

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[jonboede]

Like the L-29, the shortest takeoff in the L-39 can be made by over-rotating and "hopping" the airplane up in to ground effect then allowing it to accelerate. This is done with a sharp stick pull-push but great care must be taken not to get too far off the ground or to maintain too much AoA or the airplane will mush back to the ground.