Mikado LOGO 400, Руководство пользователя

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Manual LOGO 400 Page 44 ©Mikado Modellhubschrauber
13 RC Programming
2. Using a gyro in Heading-Hold mode
The Heading-Hold gyro mode compensates automatically the deviation caused by the motor torque.
Therefore, if Heading-Hold mode is used, revo-mix should not be programmed additionally.
Important: Check to ensure that the tail rotor assembly moves smoothly and without play. Otherwise the
gyro and servo will not compensate the torque properly.
Rotor Head RPM control
LOGO 400 is designed to be flown with constant rotor head speed. Irrespective of flight attitude (as-
cending, descending, hovering), rotor speed should be kept roughly constant. There are two different
methods for obtaining constant rotor speed:
Rotor speed control with speed controller
All speed controllers can be used in this mode. With speed controller it is necessary to program a throttle
curve (see manual). Programming of throttle curve requires that you associate a given throttle value with
a particular pitch value. In this way, the rotor speed is held almost constant with all pitch values.
Throttle curve programming depends on the type and quality of the R/C system. Simpler, inexpensive
R/C systems designed for model helicopters usually have a 3-point throttle curve. High-end R/C systems
typically have throttle curves with more configurable points (up to 9). Fine tuning of throttle curves will
be necessary during test flights.
Note that an incorrectly programmed throttle curve reduces performance and can lead to overheating
of the motor and the speed controller.
Rotor speed control with governor (RPM regulation mode)
A speed controller with governor function keeps the rotor head speed constant, independent of flight
attitude (ascending, descending, hovering). It is not necessary to program a throttle curve. The head
speed is simply controlled on the radio transmitter using a switch or lever.
Important:
1) Governor mode must be activated in the speed controller first (see manual of the speed controller)
2) In governor mode, the servo wire of the speed controller must not be connected to the throttle channel.
Use a free channel in your radio to connect the servo wire.