Multiplex Profi MC 3010 User Manual page 173

Example model: 'B,K117"
ExamDle of a helicoDter with "CPM" swashplate control
system. The swashplate is controlled directly by 3 ser-
vos, arranged at 120 degrees to each other, which pro-
vide collective pitch, pitch-axis and roll-axis control.
Three servos are used, in conjunction with the
"HEAD-MlX" mixer. The throttle is assigned to
Note: Phase affects all rotor head servos equally. Before you
change the Geometry settings, be sure to set up the collec-
tive pitch inDuts and check that thev are correct,
Summary:
Memory No.: 15
"THROTTLE" ('DYNIHR.'is an alternative).
A "sup-
pressible" gyro is assumed, which can be switched be-
tween minimum and maximum effect by means of
switched control H. "Flare" mixing can be achieved by
unequal collective pitch inputs to the "centre" and "out-
board" servos.
Channel
controls
Throttle
Servo No
Function
Ro/Co/Pi Ro/Co/Pi Ro/Co/Pi Throttle
HEAD-MIX HEAD-MIX HEAD-MIX
1st inp. ROLL ROLL
PITCH
THROTTLE
YAW
2nd inp.
PITCH PITCH
COLLECT.
coLLEgr.
3rd inp.
coLLECr. coLLEgr.
4 f 5 I
Yaw Gyro
Mixture
TAIL ROT
GYRO
MIXTURE
r
4th input: Geometry
sth input: Phase
Switches: 51 - Dual Rates, roll; 52 - Dual Rates pitch; 53 - auto-rotation; 55 - direct throttle
Notes: Switch control H must be fitted (On/Off switch, 3-core lead)
3-Doint throttle curve used.
Piich input value for "centre servo" twice as great as for "outboard servos"
(assuming 120 degree arrangement)
Collective pitch input same for all three servos
Possible modif ications: s-point throttle curve
Gyro not used (different type of gyro)
24