Flight Manual LS1-f
Issued May 2011
2.2
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
2.2
Airspeed
Airspeed limitations and their operational significance are shown below
Speed
IAS
km/h
(kts.)
Remarks
V
NE
Never exceed
speed
LS1-f:
250 (135)
LS1-f (45):
270 (146)
Do not exceed this speed in any
operation and do not use more than
1/3 of control deflection.
V
RA
Rough air speed
LS1-f:
250 (135)
LS1-f (45):
270 (146)
Do not exceed this speed except in
smooth air and then only with
caution. Rough air is in lee-wave
rotors, thunderclouds, visible
whirlwinds or over mountain crests
etc.
Do not use more than 1/3 of control
deflection.
V
A
Manoeuvring
speed
170 (92) Do not make full or abrupt control
movement above this speed, because
under certain conditions the sailplane
may be overstressed by full control
movement.
V
W
Maximum
winch-
launching speed
130 (70) Do not exceed this speed during
winch- or auto-tow-launching
V
T
Maximum
aero-
towing speed
170 (92) Do not exceed this speed during
aerotowing.
V
LO
Maximum landing
gear operating
speed
LS1-f:
250 (135)
LS1-f (45):
270 (146)
Do not extend or retract the landing
gear above this speed.
Warning:
At higher altitudes the true airspeed is higher than the indicated
airspeed, so V
NE
is reduced with altitude according to the table below, see also
section 4.4.6.
Note:
The strength of the airframe
is proved for + 10 m/s gusts at max. speed
VNE. This means that combination of such a gust at VNE and positive
manoeuvring load at the same time may overstress the airframe
