BOMBARDIER BD-100-1A10, Руководство по эксплуатации

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FLIGHT CONTROLS
Volume 2 Flight Crew Operating Manual Sep 14/2005
10-01-02
CSP 100-6
REV 4
PRIMARY FLIGHT CONTROLS
COMPONENTS AND OPERATION
AILERONS AND MULTIFUNCTION SPOILERS
The aileron control cable runs to both control wheels and both ailerons. The roll disconnect mechanism disconnects the
pilots control wheel from the aileron circuit. When disconnected, the pilot controls the roll spoilers and the copilot controls
both ailerons. Normally the aileron and roll spoilers are interconnected and there is a simultaneous and coordinated move-
ment of all lateral control surfaces from either pilot station.
Moving the control wheels also generates a signal that is sent to the spoiler electronic control units (SECU 1 and SECU 2).
Dual redundant modules within the SECU control the extension/retraction of the multifunction spoilers (MFS). The SECUs
combine the control wheel signals with other information to determine the required multifunction spoiler panel deflection
for any given airplane configuration. There are four spoiler panels on each wing. The two outboard panels are the multi-
function spoilers that operate asymmetrically in a roll, symmetrically for flight spoilers, and on the ground as ground spoil-
ers. The two inboard spoilers only operate on the ground. A single power control unit is used on each spoiler. The MFS
operate on the down-going wing only to assist the ailerons in roll control. In order to reduce roll control forces, an aileron
balance geared tab is mounted on each aileron. The balance tabs have a maximum ±15 degrees of travel each side of the
aileron chord line. It consists of a constant length push rod hinged at both ends on brackets rigidly mounted on the wing at
one end and on the balance tab at the other end. The mechanism acts as a linkage with the aileron surface being the driving
link and the geared balance tab being the driven link. The aileron balance tab is geared to move in the opposite direction
of its corresponding ailerons movement. A roll damper is mounted on the pilot control column. Under normal operation,
the roll damper acts like a quadrant and transmits all of the crew member’s inputs. In case of any one aileron cable failure,
the roll damper limits the rate the control wheel deflects (driving the roll spoilers) to a recoverable level. To prevent damage
to the aileron surfaces from wind gusts when the aircraft is parked, a gust lock mechanism is incorporated to lock the left
drive quadrant in the neutral position. The mechanism is actuated by the crew, via a telescoping gust lock lever mounted
in the throttle quadrant. The lever moves a cable, that engages a spring loaded pawl into a quadrant mounted cam recess.
When the gust lock is engaged, the throttles are physically prevented from being moved above idle. Aileron position is dis-
played on the EICAS FLIGHT CONTROL synoptic page. A full-scale deflection of the AIL position indicator corresponds
to maximum aileron deflection.
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