| 摘要 |
<p>The invention relates to a device for activating a valve 106 of an ejector 102 of a chamber 103 in an aircraft turbojet engine 101, wherein the chamber is capable of variable pressurisation. The ejector is provided with a means for opening/closing the valve as a function of a triggering threshold α*P28 that varies according to the altitude at which the valve is located. Alternatively, the ejector may be provided with a means for opening/closing the valve as a function of the altitude Pamb at which the valve is located. The means for triggering the opening/closing of the valve are means that toggle the valve between a fully open position and a fully closed position. The means for triggering the opening/closing of the valve may comprise a multiplier element 711 that receives ambient air pressure Pamb and air drawn from a high pressure compressor P26. The means for triggering the opening/closing of the valve may comprise a binary flap valve (702, fig 7A).</p> |
