Roll inputs are transmitted to the ailerons by dual cable
runs providing fail safe operation. Control column
inputs are transmitted to a differential unit. The differential
unit output is modified by:
• Artificial feel unit.
• Aileron droop actuator.
• Trim actuator (located on center console).
If one control jams, the interconnecting spring rod can
compress permitting operation of the control run to the
other wing. Pilot effort with a jammed control run is between
and 90 LB
. Spoiler roll control is available
Artificial feel is a spring mechanism. It operates independently
of airspeed and provides:
• Artificial feel loads proportional to control
• A neutral centering mechanism.
To improve low speed aerodynamic characteristics,
Slat extension signals an aileron droop approximately
ROLL SPOILER CONTROL
The roll spoilers are electrically controlled by two identical
computers (EFCU-Electrical Flight Control Units)
which process signals from the control wheels position
Four groups of spoilers are controlled and monitored
by both computers. Each spoiler group consists of one
or two pairs of symmetrical spoilers:
• A300: spoilers 3 & 2, spoilers 4 & 1, spoilers 5
& 7, spoilers 6).
• A310: spoilers 3 & 2, spoilers 4 & 1, spoilers 6
& 7, spoilers 5).
ROLL SPOILER (PANELS 3 - 7) LOGIC
Roll spoiler deployment starts at approximately 10° of
control wheel deflection.