Well fiddles a bit with the controls and here is the result.
I would like some feedback to the "feel" of it. I personally think it would be easiere to control with the mouse but I havent figured out howto yet.
I also have some bugs so bear with me. One is the infamous exhaust, the other is the sound of the ship. It apparently dosent loop.
Feedback comments appriciated
http://www.extorris.com/demo/jmeExtorris02.php
hmmm …
There’s no way as far as I could tell to exit the program without ctrl-alt deleting.
Might want to put the esc key back in for exiting as that seems to be the norm for jME apps.
I wouldn’t give the ship intertia in terms of rotation. It’s basically impossible to control the ship once it starts spinning around.
Neat particle effects though.
I might add some more space noise so you can tell your moving a bit easier.
Other than looks good. Keep it up 
there is no way for sound to travel in space 
Only in movies and games… which extorris is - DOH!
shochu:
Yeah I suppose the ship is hard to control so, I will try the interia effect with a mouse, it worked ok last time I did it…
You couldent hear the engine sound
I might add some more space noise so you can tell your moving a bit easier.
WHoops, when I said space noice I meant more particles floating around, not actual sound hehe.
ah yes I see