| 摘要 |
<p>1,106,871. Controlling aircraft. GENERAL ELECTRIC CO. 24 Feb., 1966 [4 March, 1965], No. 8216/66. Heading B7G. An installation for a lift fan 42 in an aircraft wing structure 11, wherein the fan blades 37 carry turbine blades 40 driven by efflux gases from a volute 19, the residual gases and the air from the fan being directed downwardly through a shroud 16 in the wing, has pivotable louvres 60, 62, whereby the mass flow of air from the fan may be varied and/or controlled directionally. The louvres 60 are mounted on pivots 61 fast with wing structure and louvres 62 are pivoted at 63 to a bar 64 which may be moved spanwise of the wing by an actuator 74. Adjoining pairs of louvres 60, 62 are connected at 70, 71 respectively to a link 65 in turn pivoted at 73 to a further movable bar 72. Adjoining extremities of bars 64 and 72 are connected by a lever 75, the free end of which is pivoted to a further actuator 76. Movement, by actuator 74 alone, of bar 64, say to the right as viewedin Fig. 1, would cause the trailing edges of adjoining louvres 60, 62 to be brought closer together, thereby reducing the effective area through the louvres and restricting the air flow. The two actuators 74, 76 may be operated simultaneously to vary the direction of flow.</p> |
