Page 7-18
Initial issue
7.7
Wing Flaps
The single-slotted wing flaps provide low speed lift enhancement. The wing flap consists of glass fiber sandwich
composite, that produces a smooth and seamless surface. The construction of flap includes skin, web, root and tip rib.
The flap is attached to the wing and fuselage by means of four hinges.
The wing flaps are operated manually by a lever on the pedestal panel. The wing flap lever moves in a slotted link
which indicates four positions:
FLAPS 0
(flap
s retracted 0°),
FLAPS 1
(takeoff position 15°),
FLAPS 2
(landing
position 24°) and
FLAPS 3
(emergency landing position
35°). Wing flap lever is joined to the flap’s torsion tube by
means of push-pull rod and lever. Torsion tube mechanically interconnects both wing flaps. There is a booster (gas
strut) in the flap control system. The booster decreases the pilot effort when extending the wing flaps.
The flaps position is set by gripping the handle, pressing the buttons on the underside of the handle with fingers and
pulling the handle to the desired position. The position is automatically locked after the buttons are released
(Fig. 7-11).
WARNING
Do not extend the flaps above V
FE
!
WARNING
When setting the flap position
FLAPS 1
,
FLAPS 2
or
FLAPS 3
always
ensure that the lever is properly locked!
If not locked properly, the flaps may retract inadvertently, which
will cause the aircraft to pitch up and lose airspeed quickly!
NOTE
Always extend the flaps gradually through incremental positions
and trim the aircraft appropriately!
Fig. 7-11
Wing flaps control
Содержание WT9 Dynamic LSA / Club
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