초록 ▼

The steering or control force for operating a steering column in an aircraft, especially in a rotary wing aircraft, is stabilized. The steering column influences through an articulated steering or control linkage the elevator assembly or the rotor blade adjustment, whereby a signal is employed which

The steering or control force for operating a steering column in an aircraft, especially in a rotary wing aircraft, is stabilized. The steering column influences through an articulated steering or control linkage the elevator assembly or the rotor blade adjustment, whereby a signal is employed which is dependent on the measured flight speed. It is necessary to signal to the pilot at all times how the steering column must be moved. Such signalling must be definite and free of any disturbing influences and the pilot must receive such signalling through the steering column manual force which is a force reacting to the operation of the steering column. For this purpose a speed dependent signal is supplied to a servomotor. This signal rises with the flight speed at least above a preselectable threshold value. The servomotor in turn controls the tensioning state of a spring which is pivoted at one end to the steering column and at the other end to the displacement member of the servomotor. Preferably, the point of articulation between the spring and the steering column is located approximately opposite the point of articulation between the steering column and the steering or control linkage. Additionally, a feedback signal derived from sensing the displacement caused by the servomotor is added to the speed dependent signal. The feedback signal varies in the same sense as the displacement caused by the servomotor and serves to achieve proportionality between the signal S and said displacement.

대표청구항 ▼

A method for stabilizing the steering force in an aircraft, wherein a steering column is connected in an articulated manner through a steering linkage to controlled means, comprising the following steps: (a) measuring the flight speed and producing a flight speed signal which is speed dependent at l

A method for stabilizing the steering force in an aircraft, wherein a steering column is connected in an articulated manner through a steering linkage to controlled means, comprising the following steps: (a) measuring the flight speed and producing a flight speed signal which is speed dependent at least above a certain speed threshold value, (b) measuring a displacement caused by a servomotor pivoted through a spring to said steering column at a point located approximately opposite a point at which said steering linkage is articulated or pivoted to said steering column, and producing a displacement responsive feedback signal, and (c) supplying said speed dependent signal and said feedback signal through signal combining means to said servomotor for controlling the tension state of said spring by any displacement caused by said servomotor in response to said speed dependent signal as modified by said feedback signal for imparting to said steering column through the instantaneous tension state of said spring a reaction force which signals to the pilot the correct movement direction to be imparted to the steering column.