SCHEMPP-HIRTH FLUGZEUGBAU GMBH, KIRCHHEIM/TECK ...

SCHEMPP-HIRTH FLUGZEUGBAU GMBH, KIRCHHEIM/TECK SCHEMPP-HIRTH FLUGZEUGBAU GMBH, KIRCHHEIM/TECK
Duo Discus FLIGHT MANUAL Duo Discus FLIGHT MANUAL
4.5.8 Fli ght in rain
October 1993
Revision
When flying the "Duo Discus" with a wet surface or
in rain, the size of the water drops adhering to
the wing causes a deterioration of its flight
performance which cannot be expressed in numerical
values due to the difficulties involved with such
measurements. Often the air mass containing the
moisture is also descending so that compared
with a wet sailplane in calm air the sink
rates encountered are higher.
Flight tests in rain, conducted by the manufacturer,
did not reveal any significant differences in the
stalling behaviour or stalling speeds.
It cannot be excluded, however, that excessive
alterations of the airfoil (as caused by snow,
ice or heavy rain) result in higher minimum
speeds.
Approach in rain:
See page 4.5.4.
LBA-app.
4.5.8
4.5.9 Aerobatics
October 1993
Revision
Aerobatic maneuvers are not permitted I
LBA-app.
4.5.9