On 20 Mar, 14:38, Doug Hoffman wrote:
The Real Doctor wrote:
On 20 Mar, 01:39, Doug Hoffman wrote:
And lift(as we are using the term) without gravity is not possible.

Aircraft in a 90 degree bank can still produce lift ...

Without gravity how will you get the glider into a bank (or even to
move)? *Answer = not possible.

An engine. You'll notice that I wrote "aircraft" and not "gliders"...

Ian