![]() The feel computer can also offer a centering function, which permits elevator offset compared to neutral column. ![]() The feel computer artificially loads the control column movements to mimic the aerodynamic loads. Providing hydraulic controls (Power Control Units, PCU) that lacked aerodynamic feedback, mandating the use of a "feel computer". ![]() Column trim switch could jam and cause a runaway stabilizer, so the column switch was split into two.The autopilot is tasked with Mach trim (whether by trimming stabilizer or shifting the center point of the elevator trim tab). To offset Mach tuck, a stabilizer trim schedule was added.Proximity switches were added to trip stabilizer trim if the pilot column was moved in opposition to the stabilizer trim (e.g.The motor was commanded by a switch that pushed up or down, would trim nose up or nose down. Electric trim, a motor that could move the trim wheel for the pilot.The point of stabilizer trim was to reduce the pilot column forces to zero, the airplane in "trim".Ī moving stabilizer is an advancement that benefits operating safely at high Mach numbers. ![]() In the beginning there was a stabilizer trim, a wheel the pilot moved to apply a normalizing pitch up or pitch down force. ![]()
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