| 摘要 |
<p>The exhaust duct of a turbojet engine, which is annular with an enlarged plug or bullet at the exhaust end, includes an arrangement of the outer wall to block direct sight of the turbine of the engine through the exhaust duct. There are two rows of inwardly directed streamlined lobes on the outer wall of the exhaust duct with the lobes of one row staggered with respect to those of the other so that the two sets cooperate to block direct view of the turbine through the gap between the plug and the outer wall of the exhaust duct.</p> |
