Rudder bar system with force gradient for a helicopter

Details Rudder bar system with force gradient for a helicopter Rudder bar system with force gradient for a helicopter

1995-12-22

1998-04-14

Grant, William

Aeronautics and astronautics

Aircraft control

Automatic

244196, 244223, 244235, 318586, 318628, B64C 1306, B64C 1308

Patent

active

057383103

ABSTRACT:
A rudder bar system for a helicopter controlled in yaw by acting on the tail rotor or an equivalent device has a capability, as a function of the parameters representative of the current flight status of the helicopter, of either automatically continuously recentering the forces on the rudder bar, which cancels out the residual static forces and gives the pilot a tactile sensation close to that given by a friction-type rudder bar, or allowing the pilot fully to feel the countering action of an elastic return device such as a spring.

REFERENCES:
patent: 2695145 (1954-11-01), Lear et al.
patent: 2936976 (1960-05-01), Greenland et al.
patent: 4607201 (1986-08-01), Koenig
patent: 4607202 (1986-08-01), Koenig
patent: 4664346 (1987-05-01), Koenig
patent: 5489830 (1996-02-01), Fernandez

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