SCHEMPP-HIRTH FLUGZEUGBAU GmbH., KIRCHHEIM/TECK
Ventus-2cM
FLIGHT MANUAL
Use of the wing flaps
(propeller retracted)
The camber-changing flaps alter the wing section such that the laminar bucket is
always well suited to the actual flying speed.
Use of flaps
for
flaps
at
units
WING SPAN = 18 m
OPTIMUM AIRSPEED
WING SPAN = 15 m
OPTIMUM AIRSPEED
AUW=
490 kg
1080 lb
AUW=
565 kg
1246 lb
AUW=
430 kg
948 lb
AUW=
525 kg
1157 lb
L
km/h
kt
mph
- 90
- 49
- 56
- 97
- 52
- 60
- 80
- 43
- 50
- 90
- 49
- 56
Low speed
flying (straight
and level)
+2, +1
km/h
kt
mph
84 - 90
45 - 49
52 - 56
91 - 97
49 - 52
57 - 60
80 - 97
43 - 52
50 - 60
90 - 107
49 - 58
56 - 66
Best L/D
0
km/h
kt
mph
95 - 108
51 - 58
59 - 67
102 - 116
55 - 63
63 - 72
108 - 120
58 - 65
67 - 75
120 - 132
65 - 71
75 - 82
-1
km/h
kt
mph
108 - 155
58 - 84
67 - 96
116 - 167
63 - 90
72 - 104
120 - 155
65 - 84
75 - 96
132 - 170
71 - 92
82 - 106
-2
km/h
kt
mph
155 - 192
84 - 104
96 - 119
167 - 206
90 - 111
104 - 128
155 - 183
84 - 99
96 - 114
170 - 200
92 - 108
106 - 124
S
km/h
kt
mph
192 - 206
104 - 111
119 - 128
206 - 221
111 - 119
128 - 137
183 - 230
99 - 124
114 - 143
200 - 250
108 - 135
124 - 155
Flying between
thermals and
high speed
flying
S1
km/h
kt
mph
206 - 285
111 - 154
128 - 177
221 - 285
119 - 154
137 - 177
230 - 285
124 - 154
143 - 177
250 - 285
135 - 154
155 - 177
For a speed polar diagram refer to section 5.3.2.
For smooth thermals flap setting "+2" is recommended; in turbulent thermals,
which require a quick aileron response, flap setting "+1" is advantageous. Near
the lower end of the optimum thermalling speeds the pilot may even use flap
setting "L", especially at high all-up masses or in updrafts with hardly any
variation in flying speed. Best glide and moderate inter-thermal speeds are
covered by flap setting "- 1" – for high cruise the optimum performance is
achieved with the more negative settings.
November
2003
LBA-app.
Revision --
4.5.3.3
Содержание Ventus-2cM
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