| 摘要 |
<p>An axial flow fan assembly comprises a fan matrix including radially-disposed blades terminating outwardly in a cylindrical wall (12) and rotatably mounted in a support structure, two or more ramjets (15) being mounted on the external surface of the wall (12) and oriented to cause the thrust in use to rotate the fan matrix within the supporting structure. Preferably, the ramjets (15) exhaust impinges on an annular series of vanes (25) to increase the thrust and deflect the exhaust gases away from the air intakes of the ramjets. The assembly may be pivotally mounted within an aircraft fuselage, for movement between positions which facilitate transitional lifting force and propulsion force. The assembly may include arrays of imbricated slats forming a louvred surface disposed respectively on each side of the fan matrix, the slats of each array being independently angularly adjustable to alter the direction of the intake and/or outlet air passing through the fan matrix.</p> |
