Manual Graupner MC 32 HOTT (page 100 of 345) (English)

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100 Program description - Base setup models | Helicopter models

Caution:

Never start the range test on the

transmitter during normal operation

of the model.

DSC output

If necessary, use the  selection keys of the left

or right touch pad to switch to the “DSC Output” line

then, with a brief tap on the centre SET key of the

right touch pad, activate the value window:

SET SET SEL SET

Rcv Ch Map R16 R08 n/a

n/a

RF transmit on

RF range test 99s

DSC Output PPM10

BASIC SETTING,MODEL

Now you can use the right selection keys to choose

between four types of modulation “PPM10”, “PPM16”,

“PPM18” and “PPM24”. Touch the centre SET key of

the right touch pad again to complete the entry.

This choice primarily inﬂuences the maximum num-

ber of control channels which can be attached to the

DSC (direct servo control) socket, and thus also avail-

able to a ﬂight simulator or teacher/pupil system. By

selecting “PPM10” this will be control channels 1 … 5,

for “PPM16” channels 1 … 8, for “PPM18” channels 1

… 9 and for “PPM24” channels 1 … 12.

Autorotation

Autorotation is that state of descending ﬂight in which

the pitch of main rotor blades are set such that the

rotor's speed matches the natural forces of air ﬂowing

through, like a windmill. This built-up energy can be

used for "recovery" lift to brake a descent by appropri-

ate blade pitch adjustment.

Autorotation is a means by which real and model heli-

copters are able to land safely in emergency situations,

e. g. in the event of a motor failure. However, the pre-

requisite for this is a well-trained pilot familiar with the

helicopter's characteristics. Quick reaction and good

perceptiveness are necessary because the rotor's iner-

tia can only be used once to generate recovery lift.

When this technique is evaluated during competi-

tions, the motor must be switched off for autorotation.

On the other hand, for training mode it is advanta-

geous to keep the motor at idle for autorotation.

The Autorotation switch causes a switchover to the

autorotation ﬂight phase in which control of "throttle"

and "pitch" are separate and all mixers which have

an effect on the throttle servo are switched off. Cor-

responding parameter settings are made in the »Heli-

copter mixer« (see text beginning page 190); refer

also to the "Principle of the Auto. C1 Pos." topic which

follows.

The "Autorotation" name is permanently assigned to

this phase and it is included in the base screen and

the screeens of all ﬂight phase dependent menus.

This name can NOT be changed. It is only possible to

assign a switch to this option at the right of this display,

as described on page 60. If a switch is assigned,

it will have absolute priority over all other ight-

phase switches.

BASIC SETTING,MODEL

SET SET

RF transmit on

RF range test 99s

DSC Output PPM10

–––

Autorotation

More about ﬂight-phase programming can be found

in the text beginning on page 190 in the»Helicopter

mixer« section.

Autorotation C1 position

The autorotation ﬂight-phase can alternatively be acti-

vated by a threshold point for the C1 throttle/pitch stick.

To do this, use the  selection keys of the left or right

touch pad to move into the "Autorot. C1-Pos." line.

As soon as this display line has been selected, its

value ﬁeld, located above the column label STO will

be framed.

BASIC SETTING,MODEL

STO SET

RF range test 99s

DSC Output PPM10

–––

Autorotation

Autorot. C1-Pos. 0% –––

Move the C1 stick into the desired threshold switchover

position then tap the centre SET key of the right touch

pad. The current value will be displayed, e. g.:

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Graupner MC 32 HOTT Manual

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