Hélicoptères Guimbal
SECTION 4
CABRI G2
NORMAL PROCEDURES
4-18
Power failure in hover in ground effect practice
1. Roll-off throttle frankly until on its stop,
2. Counteract yaw motion by applying left pedal,
3. Increase collective as ground approaches, to smooth landing,
4. Push collective down once landed.
Note 1
: If the helicopter is light, it may bounce after a first touchdown.
Note 2
: The Cabri G2 has no natural tendency to depart in roll or pitch after
failure. No systematic corrective cyclic action is needed.
A slight forward motion at impact is recommended for better
control.
Note 3
: For a forgiving practice, respect a maximum of 5 feet height.
Note 4
: Avoid practice at maximum gross weight.
Autorotation practice
1. Lower collective full down,
2. Counteract yaw motion by applying left pedal,
3. Roll-off throttle through its spring ramp to its stop,
4. Maintain IAS between
30 and 50 kt IAS (50 kt IAS
recommended)
by controlling longitudinal cyclic,
5. Slightly increase collective if required to keep rotor speed in the
green arc,
6. At about 60 feet AGL, apply aft cyclic to raise the helicopter nose
smoothly and continuously.
7. As ground closes-on, apply forward cyclic to level the helicopter
while raising the collective to stop sink rate.
•
With a
50 kt IAS
approach, landing requires a longer distance
but is easier to manage. Little action is required on the
collective control since the flare will stop the sink rate.
•
A
30 kt IAS
approach needs smaller cleared area for landing
but is more difficult to manage.
8. Use pedals to minimize ground drift,
9. Once stopped, lower the collective.
Note
: When autorotation is stabilized with collective full down, the rotor
speed should stay in the authorized range, whatever the weight
and the altitude in flight envelope.
Caution
:
If airspeed drops below 30 kt IAS, push frankly the cyclic forward
to recover airspeed.
