| 摘要 |
<p>An auxiliary airflow for powering accessories obtained from the compressor of the engine via a bleed aperture 7 immediately downstream of a diffuser vane 3 in a cusp 6 which is formed in the trailing edge of the vane 3 to provide inertial separation. The high energy air from the diffuser 1 is used as the primary airflow in an ejector 10 to draw ambient air into the auxiliary airflow to lower the temperature of the bleed air. The ejector automatically adjusts the amount of ambient air according to the energy of the bleed airflow by means of a piston-actuated spike 13 mounted for sliding movement in the primary nozzle 11. The spike 13 varies the volume of flow through the primary nozzle 11 according to the pressure exerted by the airflow on the piston. <IMAGE></p> |
