SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Ventus-3M „Performance“
FLIGHT MANUAL
March 2019
CS 22
Revision –
4.5.4.1
4.5.4
Flight/Cross Country Flight (power plant extended)
For flight performance with extended powerplant please refer to page 5.3.2.1.
Maximum climb rate is achieved with flaps in „L“ position and between 98 and 100
km/h (53-54 kts, 61-62 mph).
At higher air speeds, the climb rate decreases. Maximum horizontal air speed V
H
with flaps at „0“ and full throttle is approx. 160 km/h (86 ft, 99 mph).
Caution:
With flaps at „+1“ or at low mass and flaps at „0“, a slow climb will be achieved
at V
H
.
From the figures - see page 5.3.3.1 - it can immediately be seen that sawtooth
technique provides the greatest range.
It consists of the following repetitive flight sections:
o
a climb at a speed of approx. 100 km/h (54 kt, 62 mph)
o
a glide in “clean” sailplane configuration
Thereby the height to be consumed in glide should not be less than 500 m (1640
ft).
The maximum range in glide is achieved at a speed of approx. 115 km/h (62 kts,
71 mph), resulting in an average speed of around 110 km/h (59 kts, 68 mph). In
addition, the range of course also depends on the amount of water ballast carried
and decreases with higher load.
Should the “sawtooth method” be impracticable due to low clouds ceiling or
because of airspace restrictions, the cruising in level flight at a speed of approx.
160 km/h (86 kt, 99 mph) is also possible.
The range, however, is then considerably less – see apge 5.3.3.1.
In principle, sawtooth technique is to be preferred for cruising flights, as it is much
more pleasant for the pilot due to noise reasons in addition to the greater range.
This is due to the lower engine speeds during climb compared to horizontal flight.
Note:
Engine use in rain must be avoided as this may damage the propeller.
Содержание Ventus-3M Performance
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