Schempp-Hirth Ventus-3M Performance, Предварительное руководство по эксплуатации самолета

Страница: 92 / 230

SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Ventus-3M „Performance“ FLIGHT MANUAL
March 2019 CS 22
Revision – 4.5.3.2
High Speed Flying (power plant 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 marked on the air speed indicator (ASI) in different colors.
The aircraft Is controllable without any effort up to V
NE
= 280 km/h (151 kt, 175
mph).
Full deflections of control surfaces may only be applied up to V
A
= 180 km/h
(97 kt, 112 mph).
Up to V
NE
= 280 km/h (151 kt, 174 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 rotor, thunderclouds, visible whirlwinds or
when crossing mountain ridges, the speed in rough air V
RA
= 180 km/h (97 kt,
112 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
= 280 km/h (151 kt, 174 mph).
However, at speed above maneuvering speed, they should only be fully
extended in emergency cases. When the airbrakes are extended fast at high
speed, high deceleration forces will occur. At high speed unlocked airbrakes
are violently sucked further out.