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A pendulum could be used to sense (average) pitch. Dampening would be required to avoid oscillations. But then, what would be the point? I understand that the objective was a safe angle of attack. A simple preset of the elevator would perfectly achieve that.

The pendulum cannot work for roll. A banked plane will follow a curve. The sum of forces will remain perpendicular to the wings. Only changes in the roll rate will affect the pendulum, which is not useful for a simple mechanical control setup. (Imagine sitting in an airliner, far away from a window. You can feel the start and the end of the roll, but not the roll itself)

A pendulum could be used to sense (average) pitch. Dampening would be required to avoid oscillations. But then, what would be the point? I understand that the objective was a safe angle of attack. A simple preset of the elevator would perfectly achieve that.

The pendulum cannot work for roll. A banked plane will follow a curve. The sum of forces will remain perpendicular to the wings. Only changes in the roll rate will affect the pendulum, which is not useful for a simple mechanical control setup. (Imagine sitting in an airliner, far away from a window. You can feel the start and end of the roll, but not the roll itself)

A pendulum could be used to sense (average) pitch. Dampening would be required to avoid oscillations. But then, what would be the point? I understand that the objective was a safe angle of attack. A simple preset of the elevator would perfectly achieve that.

The pendulum cannot work for roll. A banked plane will follow a curve. The sum of forces will remain perpendicular to the wings. Only changes in the roll rate will affect the pendulum, which is not useful for a simple mechanical control setup. (Imagine sitting in an airliner, far away from a window. You can feel the start and the end of the roll, but not the roll itself)

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A pendulum could be used to sense (average) pitch. Dampening would be required to avoid oscillations. But then, what would be the point? I understand that the objective was a safe angle of attack. A simple preset of the elevator would perfectly achieve that.

The pendulum cannot work for roll. A banked plane will follow a curve. The sum of forces will remain perpendicular to the wings. Only changes in the roll rate will affect the pendulum, which is not useful for a simple mechanical control setup. (Imagine sitting in an airliner, far away from a window. You can feel the start and end of the roll, but not the roll itself)