| 摘要 |
Exhaust gases discharged from a jet engine are conducted through an exhaust control tube mounting funnel blades displaceable from an inactive position to a passage converging position to increase thrust. A flow deflecting disc mounted downstream of the funnel blades directionally affects thrust or impedes flow for a braking effect. Passages circumferentially spaced about the discharge end of the exhaust control tube, vent the exhaust gas while the flow deflecting disc is in the braking position.
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