Bedienungsanleitung Graupner MX-16 HoTT (Seite 119 von 200) (Englisch)

467107

119

Zoom out

Zoom in

Vorherige Seite

1/200

Nächste Seite

119

Program description: helicopter mixers – model helicopter

Adjusting the gyro sensor

If you wish to set up a gyro to achieve maximum pos-

sible stabilisation of the helicopter around the vertical

axis, please note the following points:

The mechanical control system should be as free-•

moving and accurate (slop-free) as possible.

There should be no “spring” or “give” in the tail rotor •

linkage.

You must use a powerful and - above all - fast servo •

for the tail rotor.

When the gyro sensor detects a deviation in yaw, the

faster it adjusts the thrust of the tail rotor, the further the

gyro gain adjuster can be advanced without the tail of

the model starting to oscillate, and the better the ma-

chine’s stability around the vertical axis. If the corrective

system is not fast enough, there is a danger that the

model’s tail will start to oscillate even at low gyro gain

settings, and you then have to reduce gyro gain further

using the rotary proportional control CTRL 8, as used

in our example, to adjust the pre-set “Gyro” value to

eliminate the oscillation.

If the model is ﬂying forward at high speed, or hovering

in a powerful headwind, the net result of the stabilising

effect of the vertical ﬁn combined with the gyro’s stabilis-

ing effect may be an over-reaction which manifests itself

as tail oscillation. In order to obtain optimum stabilisation

from a gyro in all ﬂight situations, you should make use

of the facility to adjust gyro gain from the transmitter.

inp8 (Input 8)

Ch1

ptch

thro

tail

normal

gyro

inp8 0%

The adjustment facilities in this line of the menu are only

relevant if your model helicopter is ﬁtted with a speed

governor (regulator) which maintains a constant system

rotational speed, and you wish to control it using the

“classic” method. The settings should then be entered

in accordance with the instructions supplied with the

governor you intend to use.

However, it is more convenient - and also safer - to

adopt the method described on the preceding double-

page, using the “Ch1  thro” mixer.

Swashplate limiter

Ch1

thro

tail

normal

gyro 0%

inp8 0%

swash lim.

off

This function acts like a circular mechanical gate acting

upon the swashplate control stick, restricting its range

of travel - which is usually rectangular - to a circular

pattern. This is designed to solve the following problem:

if the helicopter is set up in such a way that the roll and

pitch-axis travels extend to the maximum possible in

mechanical terms, e. g. for 3-D helicopter ﬂying, then at

simultaneous full travel of roll and pitch-axis the actual

movement of the swashplate is higher (theoretically

141%). In this situation the mechanical swashplate sys-

tem may strike its end-stops, and in the extreme case

the ball-links may even be forced off the linkage balls.

In the mx-16 HoTT transmitter a software function has

the effect of limiting the overall swashplate travel, i. e. the

tilt angle of the swashplate between 100% (the travel

is limited to the value which can be reached by one

function - roll or pitch-axis - alone) and 149% (no limiting

in force) is switched “off” (the function is completely

disabled). Swashplate limiting can also be adjusted to

suit individual models and ﬂight phases.

This software solution is far more ﬂexible than a physical

limiter disc attached to the stick unit, and such a disc

can only be used in any case if the roll and pitch-axis

functions are controlled by one of the two primary sticks.

The sketch alongside shows the effect of the limiter at a

setting of 100%: the dotted

area of travel is cut off, and

appears as a dead zone. If

this function is used, you

should leave “Dual Rate”

at 100%, and you should

not set Dual Rate values

greater than 100%, other-

wise travel will be limited on

the roll or pitch-axis individually if the swashplate limiter

is set to 100%.

Adjustment range: 100 ... 149% and “off”.

Missbrauch melden von Frage und/oder Antwort

Libble nimmt den Missbrauch seiner Dienste sehr ernst. Wir setzen uns dafür ein, derartige Missbrauchsfälle gemäß den Gesetzen Ihres Heimatlandes zu behandeln. Wenn Sie eine Meldung übermitteln, überprüfen wir Ihre Informationen und ergreifen entsprechende Maßnahmen. Wir melden uns nur dann wieder bei Ihnen, wenn wir weitere Einzelheiten wissen müssen oder weitere Informationen für Sie haben.

Graupner MX-16 HoTT Seite 119

Brauchen Sie Hilfe? Stellen Sie Ihre Frage.

Missbrauch melden von Frage und/oder Antwort

Art des Missbrauchs:

Forenregeln

Neu registrieren

Andere Handbücher von Graupner MX-16 HoTT

Das Handbuch wird per E-Mail gesendet. Überprüfen Sie ihre E-Mail.

Ihre Frage wurde zu diesem Forum hinzugefügt

Info