Center of lift direction

[gilflo]

Hi

What difference between this 2 stock crafts

Center of lift pointing upwards

Center of lift pointing downwards

Question is what does it means, pointing upwards, downwards, backwards or any degrees between those directions? Is it important?

[Brainlord Mesomorph]

wings are on upsidedown?

EDIT: On the 2nd one I mean. Also those Mk2 fusalages have lift, art they upside down?

Edited August 27, 2015 by Brainlord Mesomorph

[Belphegor]

i guess the first one will lift upwards. and the second one will be pushed into the ground

[Val]

The SPH assumes that your direction of movement is horizontally out of the Hangar, when calculating your Center of Lift.

So if you rotate your craft in the SPH it'll recalculate your center of lift as it would be if you point your craft away from prograde.

The 2nd picture seems to have the craft point down, giving you negative Angle of Attack. And therefore negative lift, or down force.

It is a very handy feature, because it allows you to get a rough idea of how stable the craft is. A stable design should have the CoL stationary or moving towards the rear the more it is angled, in any orientation. That should ensure that it'll roughly point it self back towards prograde, if no control inputs are given.

Likewise the VAB assumes upward movement when calculating CoL.