| 摘要 |
<p>A duct 6 is constructed on a nacelle 2 in which the engine 1 is mounted. Air flows into the engine intake plenum 4 via an opening 16 in duct wall 17. A swingable door 9 is mounted at the opening and is movable by actuator 11 from a first position where it partially blocks the opening to a second position, shown, where it blocks the outlet 8 of the duct. In the first position the door causes airflow entering the plenum to bend, hence giving rise to inertial separation of undesired air contaminants. In the second position air entering the duct 6 by the inlet 7 is fed to the plenum, giving a ram air effect. <IMAGE></p> |
