SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Ventus-3M „Performance“
FLIGHT MANUAL
March 2019
CS 22
Revision –
4.5.9.3
4.5.9
Flight with water ballast (cont.)
Flying with water ballast
Before starting with partly filled tanks, ensure that the wing is held level to allow
the water to be equally distributed so that the wing panels are balanced.
Because pf the additional mass in the wing, the wing tip runner should continue
running for as long as possible during the launch.
Thanks to baffles inside the ballast tanks there is no perceptible movement of the
water ballast when flying with partly filled tanks.
When flying at maximum permitted all up mass, the low speed and stall behaviour
of the aircraft is slightly different from its behaviour without water ballast. The stall
speeds are higher (see section 5.2.2) and for correcting the flight attitude larger
control surface deflections are required. Furthermore more height is lost until a
normal flight attitude is regained.
Warning:
In the unlikely event of the tanks emptying unevenly (recognized by
having to apply more opposite aileron for a normal flight attitude), it is
necessary to fly somewhat faster to take into account the higher mass
and also to avoid positive flap settings (“+2” and “L”). Stalling the aircraft
should be avoided.
Approach to landing is to be done at higher speeds and with flaps set at
"0" or "+1".
During the landing run the heavier wing should be kept somewhat
higher (if permitted by terrain) so that it touches down at the lowest
possible speed. This reduces the danger of the aircraft to veer of
course.
Содержание Ventus-3M Performance
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