6.7.3 Climbing
Climb with the speed belonging to the optimum climb, provided the weather is
optimal, also. In turbulent, gusty wind climb with a bigger speed. Very steep
climbs are dangerous and can result in a stall followed by a severe pitching of
the nose forward, should the motor stop.
Note that maximum RPM can be used only for 30 sec, climbing RPM can be
used only for 5 minutes. Watch the thermometer and decrease the speed if
necessary! For the sake of the long life of the motor and the safety of flight
continuous climbing is allowed only under the allowed temperature.
(Parameters of motor operation are included in the Manual of the motor.)
6.7.4 Cruising
When changing to horizontal flight from climb set the variometer to zero by
adjusting RPM with the gas pedal. Cruising is allowed with a speed over the
proposed one however the limits set to the parameters of the motor and to the
allowed speeds of the aircraft are to be kept. Keep direction and the
horizontal position of the wing. Turbulence may disturb this but the proper use
of controls the horizontal straight flight with constant speed can be upheld,
frequent modification of the RPM is not necessary. Keep the direction with
watching a characteristic point on the horizon, and control it with the
compass. Keep the altitude with holding needle of the variometer on zero.
WARNING
Never fly your ultralight over habitations, at altitudes, or under any circumstances
from which a successful engine-off landing cannot be attempted.
NOTE
The Warning above is especially important when taking off and climbing.
6.7.5 Turning
Before initiating a turn adjust the speed to the preplanned one. Preceding fix
the planned new direction on the horizon and bank the aircraft with the control
bar. When the planned bank and angular velocity is attained apply contra-
banking to stabilize the turn. Stable turn requires a control bar position a little
bit ahead of the cruising position. Calculating with some impulse take the
aircraft out of the turn before attaining the planned new direction. A spiral
does not differ from the turn only yawing may surpass 360º.
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