SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK
Ventus-2cM
FLIGHT MANUAL
High speed flying (propeller retracted)
When flying at high speeds, particular attention must be paid to the maximum
speed limits associated with the various flap settings. These speeds are clearly
visible markings on the airspeed indicator (ASI) in different colours.
Full deflections of control surfaces may only be applied up to V
A
= 200 km/h
(108 kt, 124 mph).
At V
NE
= 285 km/h (154 kt, 177 mph) only one third (1/3) of the full deflection
range is permissible. Avoid especially sudden elevator control movements!
In strong turbulence, i.e. in wave rotors, thunderclouds, visible whirlwinds or
when crossing mountain ridges, the speed in rough air V
RA
= 200 km/h (108 kt,
124 mph) must not be exceeded.
With the c/g at an aft position, the control stick movement from the point of stall to
maximum permissible speed is relatively small, though the change in speed will
be noticed through a perceptible change in control stick loads.
The airbrakes may be extended up to V
NE
= 285 km/h (154 kt, 177 mph).
However, they should only be used at such high speeds in emergency or if the
maximum permitted speeds are being exceeded inadvertently.
On extending the airbrakes, high deceleration forces will occur.
WARNING
Consequently it is wise to check in advance that the harness is tight
and that the control stick is not inadvertently thrown forwards when the
airbrakes are extended. Avoid loose objects in the cockpit.
At speeds above 200 km/h (108 kt, 124 mph) extend the airbrakes
only gradually (allow 2 seconds).
It should also be noted that in a dive with the airbrakes extended, the aircraft
should be pulled out less abruptly than with retracted brakes (see section 2.9
"Maneuvering load factors").
A dive at V
NE
= 285 km/h (154 kt, 177 mph) with airbrakes fully extended and at
maximum permitted all-up mass of 565 kg (1246 lb) is limited to an angle to the
horizon of about 30°.
November
2003
LBA-app.
Revision --
4.5.3.2
Содержание Ventus-2cM
Страница 11: ......