How to make a gear desapear !

[Woodylepic]

Hi


im at the finishing of my plane but i have a litlle probleme.

i have made a ejectable gear for my plane (levasseur PL8 of nungesser and coli) hall animation go well my landing gear is ejectable but i dont know how to make it desapear at the end of the sequence  ??? i know that is possible becose i have see a messerschmitt 163 "komet" simulate that  in cfs2 ?  pls help    ???

[Felix/FFDS]

#1 - CFS2 handles things differently.

#2 - I've already given you a couple of suggestions, so I'm not even going to try to reply to this subject anymore.

[Hellhound]

hmm.... with ejectable gear in 2k2/4, all you have to do is from 0-99 frames in gmax have it going down or whatever, and at 100 have it inside the plane. that way it won't be seen going into the plane, because one frame is VERY fast in FS

[Woodylepic]

Thank i will try this and give you info  is is work !

[Woodylepic]

Not working becose the gear not desapear at 99 % he move fast at the place i hace seed the gear but he not desapear !

[Felix/FFDS]

Not working becose the gear not desapear at 99 % he move fast at the place i hace seed the gear but he not desapear !

Let me try ONE MORE TIME.

Create a SMALL part, place it INSIDE the fuselage, and tag it l_wheelwell

Make l_wheelwell the PARENT of your l_gear.

Set the animation of l_gear to be fully retracted at keyframe=0, and fully extended (in takeoff mode) at keyframe=1.  If you want to animate compression or something from keyframes 100-200, go ahead.

What happens is that ANY part tagged as a child of l_wheelwell  will not be visible when the gear is fully retracted. (key frame 0).

As has been said, a 1 keyframe jump is practically immediate.

[Sterk]

Felix,
I have the similar problem with landing gear,and after may be 100000000 experiments with animations found out one thing-if in first frame of animation gear is fully retracted-an aircraft appears without gear on start position-and no matter what happens in next frame...
This the way the thing work in my sim...

May be you mean to write-
frame0=fully extended,frame1=fully retracted?
frame100=fully extended?

If I do animation this way-aircraft appears on start position with gear extended as it should be,then when airborn after I press G-gear is going up but for some reason retraction animation happens very fast,during one frame,although in cfg time is set to 5 second...

And,finally one thing is still unclear to me how to make gear extend back?With pressing G another time nothing happens...

[Felix/FFDS]

Felix,
I have the similar problem with landing gear,and after may be 100000000 experiments with animations found out one thing-if in first frame of animation gear is fully retracted-an aircraft appears without gear on start position-and no matter what happens in next frame...
This the way the thing work in my sim...

May be you mean to write-
frame0=fully extended,frame1=fully retracted?
frame100=fully extended?

If I do animation this way-aircraft appears on start position with gear extended as it should be,then when airborn after I press G-gear is going up but for some reason retraction animation happens very fast,during one frame,although in cfg time is set to 5 second...

And,finally one thing is still unclear to me how to make gear extend back?With pressing G another time nothing happens...

Tha nimation sequence should be = normally:

keyframe 0 = fully retracted.

keyframe 100 = fully extended

keyframes 101-200: compression sequence (tire on ground)

[Sterk]

Tha nimation sequence should be = normally:

keyframe 0 = fully retracted.

keyframe 100 = fully extended

keyframes 101-200: compression sequence (tire on ground)

I know,but in this case aircraft appears at start position with gear retracted!

I dont know why it happens so,I dont know who invented such a siquence but the state of gear in frame 0 always will be state of gear in sim start position...
I mean if in frame0 gear is retracted in sim-aircraft standing on the ranway with gear retracted,if in frame0 gear is extended-in sim gear is extended on start...

Please explane me-what I am missing,but gear animation works this may in my sim,may be my
sim copy is wrong one?!

[Felix/FFDS]

I know,but in this case aircraft appears at start position with gear retracted!

I dont know why it happens so,I dont know who invented such a siquence but the state of gear in frame 0 always will be state of gear in sim start position...
I mean if in frame0 gear is retracted in sim-aircraft standing on the ranway with gear retracted,if in frame0 gear is extended-in sim gear is extended on start...

Please explane me-what I am missing,but gear animation works this may in my sim,may be my
sim copy is wrong one?!

Can't answer for your sim in particular, all my modelling gets done with KF:0 = gear up; KF:100 = gear down...

[HABU]

Felix is right all aircraft have the same keyframes.

0 = fully retracted, 100 = fully extended, 101-200 = for gear compression animation.

This is how it works, this is how I've always done it, there are no two ways about it.

Check the tutorials and they will say the same thing.

You stated:

"I mean if in frame 0 gear is retracted in sim-aircraft standing on the ranway with gear retracted,if in frame0 gear is extended-in sim gear is extended on start... "

Thats almost right, if the gear is fully retracted at keyframe 0, when fs2002/4 starts (on the ground) the gear is already at keyframe 100 and will wait until you take off and hit 'g' before it goes to keyframe 0.

[Sterk]

Ok,I explane how it works on my sim:

In my animation in frame 0 gear is up,in frame 100 gear is down
I load the plane into sim and what I see?
Aircraft stands(but actually hover in air) with gear up!
I check it milion times...
I dont know,may be my converter works this way but animation sequence is played from 0 to 100 in my sim and not 100 to 0 as you say...

[Woodylepic]

Got it after 7:00 hour of work !  :)

the gear fall and dissapear !

i  have rename my r-gear_top (whit tire attached on it), r_wheelwell

then make a small box (.001m x .001m) erase hall poligon so ivisible !  8)
name it r_gear_top put the pivot of the box ender  the plane at 11 metre of distance time of the fall 1.5 sec  (Distance pivot = .5*Gravity*Time^2) make the whellwell (the gear) the parent of the r-gear_top and export the thing  ;D

thank alot for the help guys i apreciate  

[HABU]

Sterk, what program gmax or fsds2 are you using?

My only thoughts not knowing what software you use are:

a) Is frame 0 set as a keyframe?

b) Is frame 100 set as a keyframe?

On the models I've experimented with, if you have keyframe 0 and keyframe 99 (not 100) the gear disappears when extended.

If they are definately set at 0 and 100, have you tried removing the keyframes and setting them again, this can clear some problems like this?

[Woodylepic]

Im used Gmax your formula work but what i whanna do is simulate the fall of the gear (not only dissapear) that why your formula not working for my projet.

got it after some testing yesterday !

i  have rename my r-gear_top (whit tire attached on it), r_wheelwell  
 
then make a small box (.001m x .001m) erase hall poligon so ivisible !  
name it r_gear_top put the pivot of the box ender  the plane at 11 metre of distance time of the fall 1.5 sec  (Distance pivot = .5*Gravity*Time^2) make the whellwell (the gear) the parent of the r-gear_top and export the thing