Re: Q landingdata cessna 152

On 03/27/07 13:37, Euro-Motors wrote:
Hello folks
To day i when i was landing the headwind was 25 knots and i have putted 30
degree flaps like allways do
and speed was 60 knots :
the plane was staying longer in the air before toutchdown becaurce there
was mutch upwind :
the landing was not so good it was just like a was falling in the air and
did not hear the stoll speed warning
I did this 5 times and 5 times the same result what i never had before
What am i missing here?
regards
willy



Remember that when flying (which you're doing until you park the airplane),
you need to be concerned with the speed with which the airplane is moving
through the air. This is true whether you are in the air, landing or
taxiing (actually, even when you are parked, but that's a topic for another
time).

When you have a 25 knot head wind and your airspeed indicator is indicating
60 knots, how fast are you moving through the air? ... 60 knots.

Because you're airspeed indicator read 60 knots, why did you think you
should hear a stall warning?

The confusion comes from your ground speed as you get closer to your
landing point. Because of the head wind, your ground speed will be
slower. This can trick you into thinking you need to keep your speed
up to prevent a stall, when you may not be anywhere near the stall
speed in the first place.

My guess is that is why you were having problems.

Now - When landing in such a situation you do need to be concerned
about what the airplane will do should the headwind suddenly shift
to 0 head wind or even a tail wind. This could happen quickly enough
that the airplane may stall. Therefore, if the wind is gusty, it's a
good idea to carry a little additional speed (about 1/2 of the amount
of the gust) until landing.

I'll stop here so you can let me know if I'm answering the question
you want answered.



--
Mark Hansen, PP-ASEL, Instrument Airplane
Cal Aggie Flying Farmers
Sacramento, CA
.

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