SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Ventus-3M „Performance“
FLIGHT MANUAL
March 2019
CS 22
Revision –
4.5.7.3
Power plant extended (only permitted with ignition OFF and in case of an
emergency)
Landings with the powerplant extended (ignition OFF) can be done in the same
manner as landings with the retracted power plant.
Approach speed:
115 km/h (62 kt, 71 mph) (without water ballast)
120 km/h (65 kt, 75 mph) (with water ballast)
On approach, it must be taken into account that the flight performances with the
power plant extended are deteriorated considerably.
Wingspan
18 m
All-up mass
525 kg
1157 lb
Approx. sink rate
2.75 m/s
540 ft/min
At IAS
115 k/mh
62 kt
71 mph
Approx. L/D
1 : 11.6
Because of the reduced performance the approach has to be started at a
significantly higher altitude in order to perform the landing approach with the same
procedure as in glider condition.
Warning:
1. Be cautious when extending the airbrakes. Due to the additional drag
with the extended power plant, more forward stick must be applied to
maintain the above mentioned approach speed.
2. When stalling with extended power plant and ignition of the turbulent
airflow produced by the propeller superimposes the vibration in the
controls, so that in this case a stall warning is not noticeable.
Caution:
Approaches and landings should normally be made with retracted power plant.
