No, not a trick question...

You CAN'T take off without a stall, if an airfoil only has two states:
flying or stalled.

If the airfoil is flying you cannot take off, and if it's not flying it's
stalled.

(There's a whole bunch of physics involved here that I don't yet know, so
anyone, please feel free to correct whatever I get wrong.)

You stated: "It's flying as soon as you start moving on the runway". That is
not correct. It doesn't begin to fly until you develop enough relative wind
to create enough lift to overcome drag. If an airplane is only moving at 1
kt. down a runway, it is probably not flying.

Forward motion of the aircraft is not required. Given a strong enough
headwind, an airplane will readily fly backward; just ask some J3 drivers.

And an aircraft will not land until it has reached a "stalled" state.




"Todd Pattist" wrote in message
news
"Bill Denton" wrote:

But if an airfoil has two states, stalled or flying, how can you land
without a stall?

Is this a trick question? For the same reason you can take
off without a stall. It's flying as soon as you start
moving on the runway and it's flying while you're in the air
and it does the same thing in reverse on landing.
"It is possible to fly without motors, but not without knowledge and
skill."
Wilbur Wright