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Multiplex ROYALevo7 Manual

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ROYAL evo 7
Page 42
If you set Suppression = 100%, gyro gain is reduced
to zero (= gyro OFF) at full travel of the “yaw” or “ai-
leron” stick.
If you set
Suppression = 200%, gyro gain is reduced
t o z e r o ( = g y r o O F F ) a t h a l f o f f u l l s t i c k t r a v e l .
If you set
Suppression = 50%, gyro gain remains at
50% of the set value at full stick travel.
Gyro suppression works at the same value in all the gyro
modes
Control, Damping and Heading, regardless of
flight phase.
Exception:
If you set gyro gain to a value in the range -1% ... -100%
(=
Heading), gyro gain is not reduced or suppressed.
15.7. Mixer: TAIL
for model helicopters only
The TAIL mixer of the ROYALevo is our term for “static
tail rotor compensation”, also sometimes known as
REVO-MIX (revolution mixer). The
TAIL mixer always
appears automatically in the
Mixer main menu if you
set up a model based on the model templates
HELImech or HELIccpm.
When a hovering helicopter is set to climb or descend,
the torque for which the tail rotor has to compensate is
increased or decreased. The model then yaws in the ap-
propriate direction. When correctly set up, the
TAIL
mixer compensates for torque fluctuations, prevents
the model rotating on its vertical axis, and reduces the
workload of the gyro, with the result that high gyro gain
values can be set, resulting in very good tail rotor stabi-
lisation. Four parameters are required for this:
Coll.pitch+, Coll.pitch-, Offset, Zero point
! Notes
All adjustments relating to the rotor head (including the
collective pitch curve) must be completed before you
set up the
TAIL mixer. Before you carry out fine ad-
justments in flight, the throttle curve must be set up ac-
curately. If you subsequently change the throttle curve,
it will usually be necessary to adjust the
TAIL mixer too.
If you are using a heading-hold gyro in Heading mode,
the
TAIL mixer must not be used, or must be switched
off! Please read the notes on this subject in the section
describing the
GYRO mixer (Î 15.6.)
15.7.1. Parameters:
Coll.+ and Coll.-
Adjust. range
-100% ... +100% in each case
Separate values can be set for each
flight phase
F
Values can be assigned to a 3D digi-
adjustor
(Î 11.2.2.)
The parameters Coll.+ / Coll.- are used to set the
mixing ratios of collective pitch Æ tail rotor for climb
and descent, separately for each flight phase:
Coll.+ Æ correct climb
Coll.- Æ correct descent
The exact values can only be set during a test-flying
programme, as they are affected by many parameters.
15.7.2. Parameter:
Yaw diff.
Adjust. range
-100% ... OFF ... +100%
Separate values can be set for each
flight phase
F
Values can be assigned to a 3D digi-
adjustor
(Î 11.2.2.)
The purpose of the Yaw diff. parameter is to reduce
the tail rotor travel to one side of centre. This is neces-
sary if the model responds differently when a tail rotor
command is applied to left and right (unequal rotational
speed). Since the tail rotor has to counteract the torque
generated by the main rotor, “yaw” (tail rotor) usually
gives a softer response in one direction than the other.
Separate values can be set for each flight phase.
15.7.3. Parameter:
Offset
Adjust. range
-100% ... OFF ... +100%
A separate Offset value can be set for
each flight phase
F
Values can be assigned to a 3D digi-
adjustor
(Î 11.2.2.)
A slight deflection of the tail rotor (= Offset) is re-
quired in order to compensate for torque at 0° collective
pitch (main rotor). A different value can be set for each
flight phase. This is necessary if a different system rota-
tional speed is used for each flight phase.
In the
AUTOROT flight phase (auto-rotation, switch "A-
ROT") the
Offset can be changed so that the tail rotor
pitch is reduced to nothing. This is important with
model helicopters which feature a driven tail rotor.
… 43 …


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Others manual(s) of Multiplex ROYALevo7

Multiplex ROYALevo7 User Manual - German - 77 pages

Multiplex ROYALevo7 User Manual - Dutch - 110 pages

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Multiplex ROYALevo7 User Manual - Italian - 75 pages

Multiplex ROYALevo7 User Manual - Spanish - 76 pages


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