Figure 41: Trim annunciators
Setting of the trim mechanism in the neutral position is activated by pressing [LCtrl + T]. This is
justified because there is no feeling of true loads of the controls, according to which real aircraft are
trimmed.
Holding the third joystick button [Joybutton3] is an alternate means to trim the aircraft. Joystick
operation is switched from virtual control stick deflection to trimming. In this mode, the joystick
deflections activate the control stick trimmer in the respective channel.
If a joystick has force feedback, trimming shifts the joystick neutral position, which is similar to how
the real Su-27 is trimmed.
Automatic Control System (ACS)
ACS provides:
• Autostabilization of pitch/bank and barometric altitude
• Automatic leveling of the aircraft in roll and pitch
• Stabilization of absolute altitude in accordance to the radar altimeter at altitudes between
100-1000 m, with automatic ground collision avoidance
• Automatic control of climbing and descending
• Automatic control in the horizontal plane in accordance with data from the navigation
system during enroute navigation mode
• Automatic return to the programmed airfield and landing approach down to the altitude of
50-60 m in accordance with input from the navigation system
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