Mikado LOGO 10, Руководство пользователя

Страница: 54 / 64

Manual LOGO 10 Page 54 ©Mikado Modellhubschrauber
14 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 10 is designed to be flown with constant rotor head speed. Irrespective of flight attitude (ascending,
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 wrong throttle curve settings reduce performance and can lead to overheating of the motor and
the speed controller.
Rotor speed control with governor (RPM regulation mode)
A speed governor keeps the rotor speed constant, independent of flight condition. Thus, no programming
of throttle curves is necessary. The easiest way of toggling between two rotor speeds is by way of a
switch. Usually, only speed controllers for brushless motors have this feature.
100% 100%
100%
0% 0%
0%
50%
50% 50%
ca 80%
Hovering
Point
Stick Position
Stick Position
Stick Position
Half
Half
Half
Low
Low
Low
High
High
High
Power Output
Power Output Power Output
Throttle Curve (Hovering)
Throttle Curve (Simple Aerobatic Flight)
Throttle Curve (3D Flight)