Calidus
NORMAL PROCEDURES
AutoGyro_POH_Calidus Revision 4.0 – Issue Date 17.JAN.2019 4-8
Let pneumatic clutch fully engage (stabilization at about 100 rotor RPM).
If necessary release pre-rotator button momentarily and press again to maintain
engine RPM within green arc, respectively to prevent engine from stalling!
Carefully increase throttle to increase rotor rpm to that required for the take-off.
Minimum rotor rpm for take-off is 200, maximum achievable is 320. Between 280 and
320rpm it is possible that the high engine rpm and resultant propeller static thrust
generated may be causing the aircraft to slide with wheels locked – depending on the
runway surface and payload. If sliding starts reduce power! If the rpm is not sufficient
for take-off, abort and restart as required.
In case of a slipping clutch (CLUTCH light), reduce power and match engine rpm to
rotor rpm.
When the minimum required rotor rpm is reached, release pre-rotator button
Gently - but smartly - move control stick fully aft (stick travel ~ 1 sec.), see 4.9
In a strong headwind be prepared to stop movement as the nose wheel rises!
Release wheel brake with throttle unchanged
Monitor rotor speed and progressively increase throttle to take-off power
In case if a blinking CLUTCH light, consider to abort take-off run
WARNING
Before activating the pre-rotator, check area is clear.
WARNING
Prior to releasing the wheel brake, make sure that the control stick is fully aft, if
headwind component allows. A take-off run with flat rotor system may have
fatal consequences.
WARNING
If the rotor speed has decayed to below the green arc, then ground speed must
be built-up very carefully to increase rotor speed. Take care! Slow rotors can
stall and flap, causing expensive aircraft damage! If in doubt, abort the take-off
run and restart.
CAUTION
Do not engage pre-rotator at high engine RPM or drive the rotor to excessive
RPM (especially rotorhead II) as this will lead to pre-rotator drive damage.
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