Manual Graupner MC18 (page 43 of 56) (English)

30121

Zoom out

Zoom in

1/56

Codes 44, 45, 46 and 54

Butterfly Function as Landing Aid

The “butterfly” function serves as a landing aid by

controlling the glide slope. It may be used alone or in

conjunction with spoilers which are possibly in use

already.

On operation of the spoiler channel control, the flaps

will be deflected downward, while the ailerons are

moved upwards. The elevator is also re-trimmed by

the mixers so as to maintain the longitudinal attitude

of the model in normal flight. All of the three mixers

can be adjusted individually and, of course, they can

be used alone. For example, code 44 (spoiler

elevator) can be used in conjunction with normal

spoilers to retain the glide path angle on extension of

the spoilers, while the two other mixers have been set

inoperative. In the case of full span ailerons, which

are also used as flaps (flaperons), mixers 45 (spoiler

ailerons) and 44 (spoilers elevator) may be

used in unison to deflect the flaperons to the upper

limit and to re-trim the elevator to suit.

When using aileron differential (code 22), aileron

effectiveness will be considerably impaired by the

extreme deflection of the ailerons via the butterfly

function, aileron downward deflection being reduced

or even suppressed entirely as a result of the

differential. Deflections in the upward direction cannot

be increased any more as the ailerons are already at

their limits.

A remedy is provided by code 54 (reduction of

differential), whereby the degree of differential is

continuously, and adjustably, reduced or entirely

cancelled on actuation of the butterfly function.

Adjustments:

Mixers 44, 45 and 46 are already allocated as per

their functions, with mix quota having been set to 0,

they are effectively inactive.

Code 44 Spoilers Elevator

Code 45 Spoilers Flaps

Code 46 Spoilers Ailerons

To activate them, input the corresponding code

number, whereupon the associated adjustment menu

will be shown on the display. The first adjustment to

be made is the offset, which is to say the mixer has to

be told which position the operating element for the

spoilers (throttle/spoiler control stick) normally

occupies (spoilers retracted, and the no butterfly

position of ailerons and flaps). To this end the

operating element concerned is set accordingly and

then the STORE key is pressed. The offset from the

neutral position is shown on the lower line of the

display). The mix quota can be adjusted using the

INC and DEC keys (in 1% steps) and the 6 or 8

key (in 10% steps), and set to 0 by pressing the

CLEAR key, with direction of the mix being changed

by pressing the TURN key.

To deactivate the butterfly function, the mix quota of

mixers 44, 45 and 46 have to be set to 0.

If spoilers are not provided, control channel 1 in

code 72 (mix-only channel) can be de-coupled from

the stick and, with the aid of a mixer, used for other

purposes.

Code 54

Adjusting the Reduction of Differential

After calling code 54, the magnitude of the reduction

of differential can be adjusted using the INC and

DEC keys, with 0% meaning that the differential

remains unchanged on activation of the spoiler/

butterfly control, while a value of 100% indicates that

differential is completely removed in the case of

maximum butterfly function. The transition from

normal to reduced differential is linear to spoiler

actuation. The CLEAR key permits resetting the

reduction to 0% and completely cancelling differential

reduction.

Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

Forumrules

To achieve meaningful questions, we apply the following rules:

First, read the manual;
Check if your question has been asked previously;
Try to ask your question as clearly as possible;
Did you already try to solve the problem? Please mention this;
Is your problem solved by a visitor then let him/her know in this forum;
To give a response to a question or answer, do not use this form but click on the button 'reply to this question';
Your question will be posted here and emailed to our subscribers. Therefore, avoid filling in personal details.

new questions and answers
new manuals

You will receive an email to register for one or both of the options.

Get your user manual by e-mail

Enter your email address to receive the manual of Graupner MC18 in the language / languages: English as an attachment in your email.

The manual is 7,71 mb in size.

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Graupner MC18

Graupner MC18 User Manual - German - 188 pages

Graupner MC18 User Manual - French - 58 pages

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.

Info

Graupner MC18 Manual

Product: