Slingsby BGA 782, Руководство пользователя

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Handbuch Slingsby T21 - BGA 782
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TAlL-PLANE INCIDENCE
10. Place the tail-plane incidence board,
Part No. 2 1 B /4/4, on the top surface of
the tail plane, on either side of the fin,
t o - the longitudinal centre line of
fuselage. The top edge of the board
will be level if the incidence is correct, jf
otherwise, place a straightedge on top of
the incidenCe board and level it with
packing inserted at the extreme end of the
incidence board; the packing must not
exceed
n
in. in thickness. A corresponding
adjustable-level reading, taken direct from
the top edge of the incidence board, is
0
deg.
±
t deg.
TAlL-PLANE LEVEL
11.
Remove the fin fairing and place a
straightedge on the top surface of the tail
plane, parallel to the spar and just clear of
the elevator operating rod, so that the ends
rcst on the gussets on the fourth rib from
the centre. Check with a spirit level and,
jf required, raise the lower end of the
straightedge by inserting packing on the
gusset until it is level; the thickness of
the packing must not exceed
fr
in. A
corresponding adj us table-level reading, taken
direct from the top edge of the straightedge,
must not exceed
0
deg.
± t
deg.
CONTROL SURFACE MOVEMENTS
General
12. The range of movement of each
control surface is expressed as a direct
measurement from the neutral position of
the trailing edge to its position when moved
to the stops in both directions.
�3.
The neutral position of the ailerons
IS reprcsen.ted by the adjacent trailing edge
of the mam plane. The neutral positions
Qf the rudder and elevators must be tem­
porarily located on a trestle which will
r�main in place dul'iog the checking opera-
tion.).
.
Ailerons
14.
With the control columns vertical,
Jat��ally, there should be no droop (the
traIlIng edges of the ailerons should be in
line with the trailing edge of the main
F.S./2
A.P.4309A,
Vat. I.
PQJ'I
2, Sect. 3, Chap. 1
(A.L. 6)
plane). Move the control through its full
travel and check the movement of the
ailerons; the correct movement is
5 ·4
in.
±
t
in. upwards, and 3 · 6
in.
±
t
in. down­
ward. Adjustment is effected at the fibre
stock blocks on frame
4,
either by filing
or renewal.
Rudder
15.
The neutral position of the rudder
can be established by sighting from aft
down the centre line of the fuselage; the
balance .portion of the rudder should also
be in line with the top of the fin. The foot
bars of the rudder pedals should now be
all in line with the frame to which the
rudder pedals are attached. Move the
rudder through its full travel and check
that the movement to each side of the
neutral point is
14
in.
+5'
in. Adjust at
the stops clamped to the cables aft of
frame 4.
Elevator
16.
To establish the neutral pOSition of
the elevators, place a straightedge obliquely
on top of the tail plane so that it passes
over the centre line of the fuselage at the
leading edge, in front of the fin and over
the inboard trailing edge of the elevator.
The neutral position is
1
tt
in. below the
bottom edge of the straightedge. The
control column should now be vertical
fore-aDd-aft. Move the control column
through its full travel and check the move­
ment of the elevators; the correct move­
ment is
7 · 6
in.
±
t
in. in both directions.
Adjustment is effected at the stops on the
front face of frame
4.
Spoilers
17.
The movement of the spoilers is
measured from the rear edge of the spoiler
recess, at the surface of the main plane.
to the top. rear, edge of the spoiler. The
correct movement is
7-,
in.
±
I
in. and
variation in movement between port and
starboard spoilers must not exceed
!
in.
Adjustment of both spoilers is effected at
the turnbuckle in the control cable in
the cockpit. and of each spoiler individuallYl
at the turnbuckles in the main plane,
aft
of the spoilers.
,
R E S T R I C T E D
(A. L.
6, Oct.
S8)