[mahmud]

He seems to have heard of Lua but that didn't stop him from raising the question.

Next article: "Should airplanes be fitted with big rotor on top to allow for vertical take off and hovering? .. like helicopters?"

[daleharvey]

not that jets need a big rotor on top to do vertical takeoff and hovering

http://en.wikipedia.org/wiki/Harrier_Jump_Jet :)

[alexg0]

The rotor on top has been done. http://en.wikipedia.org/wiki/V-22_Osprey