Bedienungsanleitung Multiplex PROFImc3010 (Seite 77 von 79) (Englisch)

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Sp_ecialist-terms

ref,erri ng

tci

fixed-wing

aircraft

Spoilers:

A'vague

term used

for any

part

the control system

which

primarily produces

drag

(and

sometimes aftects

wing

lift). For example: airbrakes,

rotating trailing

edge

brakes

camber-changing

flaps

which

can

be de-

tlected

more than 30 degrees

negative

positive.

Dividing the

flaperon into two

makes it

possible

to set

the functions

ol aileron and camber-changing

tlap

more efficiently

in aerodynamic

terms,

particularly

long-span

wings

(better

lift distribution and

improved

aileron

response).

In the

interests of

good

aileron

response,

the aileron

movement

of the outboard

control surface

should be

greater

than that of the

inboard surface;

on the other

hand, the llap

movement oJ the

inboard control surface

should

greater

than that of the

outboard surface,

ensure docile

stall behaviour.

camber-changing

flaps

(or

simply

flaps)

Fis 65

Control

surfaces

at the trailing

edge of the

wing, used to

vary the camber

of the

wing section, and thus

also the

characteristics

of the

wing, to suit

particular

Jlight

requirements.

Positive def lections

(flaps

down)

produce

increase

in the wing's

lift

coeflicient

(slow

flight), with

a slight

increase in drag. Small

negative deflec-

tions,

around

3 degrees,

reduce drag

for high-speed

llight.

lf flaps

are deflected

more than about

+30 degrees,

drag

rises considerably.

Flaps

make

usetul

landing

aid

(spoilers,

crow system).

Flaperons:

Fuli-span

control surtaces

at the

wing trailing edge,

which

double as

ailerons and

camber-changing

flaps.

Aibron Carn!,or

charu|.ng

naB

crow system

(aileron

brakes)

Fis 68

extension

the

"Quadro"

mixed function, utilising

the mixed control

surlaces as

"spoilers".

The inboard

control surfaces

are set to a

positive

braking

position

(flap

down),

the outboard surfaces

to a negative

braking

position

(flap

up). Used on

high-performance

gliders

(F3B

class)

which are

not Jitted with

proper

airbrakes or

sooilers.

Oandr€r

a*Lnging

spolbr

Fig.69

camber-changing

flaps.

Snap-flaps:

Mixed

function: elevator

Cambr-

cha.qang nap

Often used

on aerobatic

models

to reinforce

the effect

of the

elevator.

lf up-elevator

is applied,

the camber-

changing

flaps are deflected

down; the

result is an

increase

in the wing's

lift coefficient.

Down-elevator

accompanied

by up{lap,

and the

wing's

litt

coefficient

reduced.

The overall effect

is that the aircraft

is capable

very tight

looping manoeuvres

ideal for the

"square"

figures.

Fig. 70

V-tail

(or

buttertly

tail')

Combined elevator

and

rudder in the

form of a

"V".

When elevator

is applied,

both control

surfaces

move in

the same

direction.

When rudder

is applied, they

move

in opposite

directions.

Fig.66

Delta

("elevons"):

Full-length

control

surfaces at

the wing trailing

edge, on

models

without a tailplane

(delta,

flying wing).

The

elevons

double

as ailerons

and elevators.

euadro:

Fis 6/

Full-length

control

surfaces

(flaperons)

divided

into two

separate

flaps

per

wing.

Each control surface

doubles

as aileron

and

camber-changing

tlap.

Carnber

cttarying

lbB

Apoibr

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