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Flight manual DG-1000S
2.2 Airspeed
Airspeed limitations and their operational significance are shown below
Speed
IAS
Remarks
km/h
(kts.)
V
Never exceed
270
Do not exceed this speed in any operation
NE
speed
(146)
and do not use more than 1/3 of control
deflection.
V
Rough air speed
185
Do not exceed this speed except in smooth
RA
(100)
air and then only with caution. Rough air
is in lee-wave rotors, thunderclouds,
visible whirlwinds or over mountain crests
etc.
V
Manoeuvring
185
Do not make full or abrupt control
A
speed
(100)
movement above this speed, because
under certain conditions the sailplane may
be overstressed by full control movement.
V
Maximum winch-
150
Do not exceed this speed during winch- or
W
launching speed
(81)
auto-tow-launching
V
Maximum aero-
185
Do not exceed this speed during
T
towing speed
(100)
aerotowing.
V
Maximum landing
185
Do not extend or retract the landing gear
LO
gear operating
(100)
above this speed.
speed
Warning: At higher altitudes the true airspeed is higher than the indicated
airspeed, so V
is reduced with altitude according to the table below, see also
NE
section 4.5.5.
Altitude in [m]
0-3000 4000 5000 6000 7000 8000
V
indicated km/h
270
256
NE
Altitude in [ft]
0-10000 13000 16000 20000 23000 26000
V
indicated kts.
146
138
NE
Issued: March 2002
243
230
217
205
131
124
117
111
LBA app.
2.3
Flight manual DG-1000S
2.3 Airspeed Indicator Markings
Airspeed indicator markings and their colour code significance are shown
below.
Marking
(IAS) value
Significance
or range
km/h (kts)
Green Arc
88 – 185
Normal operating range
(47.5 – 100)
(Lower limit is the speed 1,1*V
with maximum mass and foremost
C.G.
Upper limit is the maximum rough
air airspeed.)
Yellow Arc
185 – 270
Manoeuvres must be conducted with
(100 – 146)
caution and only in smooth air.
Red Line
270
Maximum speed for all operations.
(146)
Yellow triangle
100
Approach speed at maximum weight
(54)
without water ballast .
Issued: March 2002
S1
LBA app.
2.4
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