SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Ventus-3M „Performance“
FLIGHT MANUAL
March 2019
CS 22
Revision –
4.5.1.2
For rearward c/g positions and low all-up masses the powered sailplane is
lifted off with flaps set at "+2".
In the case of forward c/g positions or high all-up masses a setting of “L” may
be used to shorten the ground roll distance.
After lifting off, between about 80 to 90 km/h (43-49 kt, 50-56 mph), depending
on wing loading and flap setting, the elevator trim might be set for minimum
control stick loads.
With flaps set at "+2", normal towing speed is in the region of 120 to 140 km/h
(65-76 kt, 75-87 mph) and between about 130 to 150 km/h (70-81 kt, 68-93
mph) for higher all-up masses.
At higher towing speeds and low all-up masses, i.e. above about 160 km/h (86
kt, 99 mph), flap setting "-1" or "-2" should be used (see diagram below). With
these settings, speeds up to V
T
are covered by the elevator trim.
Only small control surface deflections are necessary to keep station behind
the tug. In gusty conditions or when flying into the propeller slip stream of a
powerful tug, correspondingly greater control stick movements are required.
At lower speeds the undercarriage may be retracted during the tow; however
this is not recommended at low altitude, because changing hands on the stick
could easily cause the powered sailplane to lose station behind the tug.
For releasing the tow rope, pull the yellow knob fully several times and turn
only when definitely clear of the rope.
Содержание Ventus-3M Performance
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