CFI oral intel

On Thu, 29 May 2008 07:21:20 -0700, gatt
wrote:


One of the folks around the hangar took his CFI practical last week. He
had his AGI so they threw out all of the Fundamentals of Instruction
stuff entirely during the oral.

A question the examiner asked him: "You're flying cross-country and
trimmed at 110 knots. You die, and the engine quits. At what airspeed
will the aircraft strike the ground?"

Another was, "You're turning final and you enter a cross-control stall.
Is it better to be in a slip, or a skid?"

-c

first question the answer is 110 knots or thereabouts. when the engine
stops the aircraft will slow, lift will reduce and the aircraft will
enter a gentle dive, as the speed stabilises with the new engine power
(gravity) the aircraft will return to its trimmed speed and the angle
of decent will adjust until the aircraft is back in trim equilibrium.

second question is interesting. the two conditions will tend to cause
a stall in the opposite wing. so which is better to stall with the
inner wing first or the outer wing first?
skidding will stall the inner wing so the stall will add to the
already existing forces causing the turn so you will spin.
slipping will stall the outer wing so you will roll out of the turn
into a dive.
I think I'd rather stall in a slip.

Stealth Pilot

On Fri, 30 May 2008 19:09:52 +0800, Stealth Pilot wrote:

first question the answer is 110 knots or thereabouts. when the engine
stops the aircraft will slow, lift will reduce and the aircraft will
enter a gentle dive, as the speed stabilises with the new engine power
(gravity) the aircraft will return to its trimmed speed and the angle
of decent will adjust until the aircraft is back in trim equilibrium.

Which is how to handle a stall with the proper AOA.

second question is interesting. the two conditions will tend to cause
a stall in the opposite wing. so which is better to stall with the
inner wing first or the outer wing first?
skidding will stall the inner wing so the stall will add to the
already existing forces causing the turn so you will spin.
slipping will stall the outer wing so you will roll out of the turn
into a dive.

I think I'd rather stall in a slip.

I'd rather dance in the rain.

shrunklink.com/arly