General
The elevator feel computer receives pneumatic, hydraulic, and mechanical in- puts. With these inputs, the elevator feel computer sends metered pressure output to the elevator feel and centering mechanism.
Physical Description
The elevator feel computer has these components:
- Stabilizer actuated cam (2)
- Q diaphragm (2)
- Droop spring (2)
- Relief valve (2)
- Force balance valve (2)
- Differential pressure switch.
The elevator feel computer has these ports:
- Pneumatic pitot port (2)
- Pneumatic static port (2)
- Hydraulic pressure port (2)
- Hydraulic return port (2)
- Hydraulic computed pressure port (2).
Functional Description
Hydraulic pressure from the system A and B flight control modules goes to the pressure ports.
As the airspeed increases, pitot pressure goes through the pitot port and pushes on the Q diaphragm.
The Q diaphragm moves and pushes the relief valve. This movement is in pro- portion to the airspeed. The stabilizer actuated cam position affects the range that the Q diaphragm can move due to pitot pressure. When the relief valve moves, it pushes the force balance valve. The force balance valve controls the pressure that goes though to the dual feel actuator. The dual feel actuator is part of the feel and centering unit.