FLIGHT MANUAL
DYNALI HELICOPTER COMPANY
Edition N°3
DYNALI H2S January 2012
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30
3.1.
GENERAL
Speed provides your reserve of potential energy. Altitude 1m in hover ; absolutely avoid
hovering above 2m (7ft). While in transition, speed and altitude are the keywords for safety.
Flare out allows you to convert speed into lift, while maintaining full rotor RPM. In the event of
the loss of rotor RPM, provided that a speed close to Vpm has been maintained, one can
always, using the flare effect, recover a large part of the lost rotor RPM. In all cases and for
all kinds of touring flight, you should always maintain a speed close to the Vpm. The
difference lies in the fact that in the second case, you will have no possible recourse in the
event of engine failure, see the height/speed diagram – every possibility of succeeding in an
auto-rotation landing in the first case)
Altitude gives you time during which you can retain control of your manœuvres. This time
also enables you, if things go wrong, to select a better landing ground.
A FLARE PROVIDES THE GREATEST AMOUNT OF AUTO-ROTATIVE ENERGY.
Auto-rotation procedure, see Chapter 4.
3.2.
ENGINE FAILURE – GENERAL
•
Loss of power may be caused by a failure of the engine or the transmission.
•
A change in the noise level, a yawing or a drop in RPM may be the sign of an
engine failure.
•
Transmission failure may be indicated by unusual noise or by vibrations and
major yawing. In all cases, initiate auto-rotation.
•
Auto-rotation procedure, see Chapter 4.
3.3.
ENGINE FAILURE ABOVE 500 ft
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Initiate auto-rotation immediately.
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Select landing area.
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Possibly attempt re-start (throttle to idle).
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Preferably land into the wind.
3.4.
ENGINE FAILURE AT LOW ALTITUDE
Takeoff manœuvres must be undertaken according to the height/speed grid shown in
Chapter 5.
