3 ms·
The only thing that can possibly lift a normal aircraft (i.e. not a rocket) is if the air is higher pressure on the bottom than the top. Deflecting air downwar
by jeffdavis 10y ago
The only thing that can possibly lift a normal aircraft (i.e. not a rocket) is if the air is higher pressure on the bottom than the top.
Deflecting air downward is the way they create that pressure difference.