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Old May 3rd 16, 01:17 PM posted to rec.aviation.soaring
Jonathon May[_2_]
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Posts: 88
Default Glide ratio with full brakes and side slip

At 09:31 03 May 2016, Tango Whisky wrote:
Le mardi 3 mai 2016 06:30:09 UTC+2, George Haeh a =E9crit=A0:
Drag increases with the square of the=20
airspeed; so increasing your airspeed=20
from 55 to 75 increases drag by 86%.
=20
With full brakes you can point reasonably=20
modern gliders at the threshold and come=20
down at a constant airspeed. Once you=20
level off the airspeed comes off rapidly=20
with full brake. Ground effect and weight=20
come into play, but even in a G103A it=20
doesn't take that much more runway than=20
a 2-22. Note that I stick to sideslipping in=20
the 2-22.
=20
It can be hard on the guy in the back seat=20
hoping that the guy in the front seat will=20
round out before smacking the nose.=20
=20
And if you round out too high and close=20
the brakes, you will be getting up close=20
and personal with the fence at the other=20
end.


As others said before - try that with a DuoDiscus, and tell us what the
ins=
urance said.



As a duo owner I can tell you it's not the LD that gets you it's the energy
that
you are carrying.
In the first generation if you lowered the nose enough to see where you
were
going the speed builds up,if you kept the speed under control you couldn't

see the field,however if you side slip you can see and control it all.
I have the later xlt and when the flaps deploy everything steadies up and
it is
great.If the engine is out the drag is off the scale.
But still the energy in the ground run is the big danger.