Flying In Thermals; Flying In Turbulence - Team 5 GREEN Betriebsanleitung

FLYING IN THERMALS

Once you have found an appropriate body of thermals, centre with toggles pulled about 20-25 cm
in order to turn as shallow as possible.
The region to fly is the range of minimum sink. The canopy performs narrow turns and transforms
thermals directly into altitude. It is recommended to keep some brake applied on the outside wing.
By varying the amount of braking, you can prevent tip deflations and also effectively control the
angle of bank.
If thermals are very narrow and strong a higher speed and bank angle will be helpful. The brake on
the outside wing is now being released.
Especially in wind-shifted thermals, sufficient speed must be flown. Try to keep to the windward
edge of the thermal by expanding the headwind semi-circle and turning tightly with tailwind. If you
drop out of the thermal on the windward side, you will tend to descend back into it because it is
tilted downwind whereas falling out on the lee side results in greatest loss of altitude and makes
it most complicated to return into the upcurrent (probably only possible by lateral detour or ex-
tremely accelerated flying).

FLYING IN TURBULENCE

When passing through strong turbulence it is recommended to stabilize the canopy by simultane-
ous use of both brakes.
Up to a certain degree of turbulence the GREEN is very resistant to deflations even at full speed.
An experienced pilot may well extend this limit by "actively" stabilizing the canopy. As soon as the
canopy tries to overtake the pilot in turbulence, the canopy is kept back by pulling the brakes more
or less. This "active" form of flying also works with incipient deflation on one side of the canopy. In
rough conditions, the necessary amount of brake distance can absolutely surpass the stall point in
normal flight. Due to the altered relative wind you are far away from the stall angle of attack.
When flying into strong vertical gusts from below, you act just the opposite way: Now the brakes
must be released in order to balance out backward movements of the canopy.
However, before you fly in strong turbulence or go cross-country with your GREEN for the first
time, you should have acquired a feeling for the GREEN's specific reactions so you can stabilize
the canopy as mentioned above.

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Handbuch Green Susi 100 Seiten.i55 55 06.09.2007 11:13:52