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the underneath, and it's very cyclicsensitive,
with the rear right skid
hanging much lower than the 206’s
left skid. Initially, at least, the best
way to take off and land is to behave
as if you are on sloping ground.
However, the visibility through the
floor panels for slinging is not so
good, and you often need a longer
162 The Helicopter Pilot’s Handbook
line than normal just to see the load
(at least 100m).
The machine has a good heater and
defroster, with plenty of room in the
cabin, and is easy to start, even if the
battery is low (it's a good idea to
crack the ventilator open slightly, so
if any leaking hydraulic gets sucked
into the engine, you can smell it
before the light comes on).
On the other hand, the cargo swing
can damage the belly when landing
in snow, and the fuel sump drain can
also be activated. Ice on the bottom
of the skids can reduce the effect of
the stinger (the heel spring on the
rear of the skid that reduces the
tendency to ground resonance), and
ice can cause problems in the tail
rotor system hydraulics.
Be careful not to fill the rear baggage
compartment too much, as you will
restrict the tail rotor controls, which
live just above it.
Limitations And Data
These refer to the basic models –
there may be additional restrictions
from optional equipment which will
be covered by flight supplements in
the back of the Flight Manual.
B B1 B2
Max AUW lbs 4300 4850 4961
External Load 4630 5402 5512
Engine Arriel
1D
Arriel
1D1
Max alt (feet PA) 16000 20000 20000
Temperature
range
-40-
+50 C
-40–ISA
+35 C
-40–ISA
+35 C
Max cargo left
(lbs)
264
Max cargo right
(lbs)
220
Max cargo aft
(lbs)
176
VNE Power on
doors closed
(mph)
169 178 at 0
PA
B B1 B2
(mph)
reduce by
3.5/1000 feet.
Subtract 12 when
OAT < -30C
VNE Power off
doors closed
reduce by
3.5/1000 feet.
Subtract 23 when
OAT < -20C
138 144 at 0
PA
VNE doors off
(mph)
81 81
VNE sling load
(mph)
92
Max slope uphill
(degs)
downhill
lateral
10
6
8
10
6
8
10
6
8
Best auto speed
(mph)
75
B B1 B2
Rotor RPM –
Power On
On ground,
low pitch
Stabilised flight
375
+/- 5
385
+/- 5
380 +/-5
390+/-4
380 +/-5
390+/-4
Rotor RPM –
Power Off
320-
424
320-430 320-430
Max RPM for
rotor brake
170
Gas generator
Max T/O
100 5
mins
100.8 5
mins
Gas generator
Max transient
%
105 5
secs
105.5 5
secs
107.5 5
secs
Gas generator
Max Cnt %
98 98* 98
Max Torque 83 94 above
46 mph
100 below
T4 continuous
(degs C)
775 795 795
T4 takeoff max
(degs C)
810 845 845
T4 trans during
start (5 sec)
865 865
T4 startup max
(degs C)
840 795 795
Max oil temp
(degs C)
110 115 115
Oil pressure
min (bars)
1.9 1.8 above
85% NG
1.3
1.8 >
85% NG
1.3 70-
AS 350 163
B B1 B2
between
70-85%
85%
Oil pressure
max
10 5 outside
start
5
outside
start
Normal voltage
range
26-
29v
26-29v 26-29v
Max voltage 31.5v 31.5v 31.5v
Max current
(red line)
150
amps
150 amps 150
amps
*With heating and demisting turned on, power is
limited to 97.5% when OAT is between 0-10 degs
C and PA is over 15000 feet.
You can start and stop rotors in
winds up to 40 kts from any
direction, and 50 kt headwinds. You
can hover in winds up to 17 kts from
any direction, and possibly more—
up to 30 kts at MAUW has been
proven.
Overall length 12.94 m (42.45 ft).
Engine
A Turbomeca Arriel 1D (1B in a BA,
and a 1D1 in a B2) free turbine
engine aft of the main gearbox,
which is around 102 lbs heavier than
the JetRanger engine at 240-260 lbs,
depending on the version. It consists
of a single-stage axial and a
centrifugal compressor, an annular
combustion chamber with
centrifugal fuel injection and
ignition, a two-stage axial turbine to
　
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本文鏈接地址：The Helicopter Pilot’s Handbook(106)