CONTROL FOR A PNEUMATIC AILERON OF A FIXED-WING AIRPLANE |
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| 申请号 | PCT/CH1999/000187 | 申请日 | 1999-05-06 | 公开(公告)号 | WO99061803A1 | 公开(公告)日 | 1999-12-02 |
| 申请人 | 发明人 | ||||||
| 摘要 | The present invention relates to a pneumatic control for pneumatic ailerons known from WO98/03398 and/or wing flaps of a fixed wing airplane, which can be manually actuated by means of a lever. The adjustment lever is connected to a three-armed pivoted lever (1) that can swivel around a fixed axis in relation to a inertial reference (7). Two outer pneumatic cylinders (11,13) and a middle pneumatic cylinder (12) are pivotally connected to the pivotal lever (1) and the inertial reference, whereby the middle pneumatic cylinder (12) supports the outer pneumatic cylinder (11,13) when it is moved from a neutral position in such a way that the sum of the torque occurring on the adjustment lever becomes substantially insignificant in each position. The low-friction pneumatic cylinders (11,12,13) used according to the invention each contain two centrally guided hollow cylinders that run into each other and are mutually sealed by means of a tubular sheet that is driven with the hollow cylinders along the inner wall of the outer cylinder and the outer wall of the inner cylinder in a manner that is substantially devoid of friction when the hollow cylinders are displaced. | ||||||
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