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Jet engine sound suppressor and reverser

  • US 3,084,507 A
  • Filed: 06/17/1958
  • Issued: 04/09/1963
  • Est. Priority Date: 06/17/1958
  • Status: Expired due to Term
First Claim
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1. IN A JET PROPULSION PLANT HAVING A TAIL PIPE:

  • AIRSTREAM-AND-EXHAUST INDUCER MEANS OF HOLLOW TUBULAR FORM MOUNTED FOR FORWARD RETRACTION AND AFTERWARD PROTRACTION COAXIALLY OF SAID TAIL PIPE, SAID MEANS SURROUNDING THE TAIL PIPE WHEN SAID MEANS IS RETRACTED AND SAID MEANS LYING REARWARDLY OF THE TAILPIPE WHEN SAID MEANS IS PROTRACTED;

    EXHAUST EXIT APERTURES IN THE FORWARD PORTION ONLY OF SAID INDUCER MEANS AND NORMALLY IN CLOSED CONDITION;

    CLOSURE-AND-BAFFLE MEANS NORMALLY CLOSING SAID APERTURES, SAID CLOSURE MEANS CONSISTING OF A PAIR OF PELTONWHEEL BUCKETS EACH PIVOTED TO THE INNER FACE OF SAID INDUCER MEANS NEAR A PLANE PASSING THROUGH THE LONGITUDINAL CENTER LINE OF SAID INDUCER, SAID BUCKETS BEING SO PIVOTED AND ARRANGED, WITH RESPECT TO SAID APERTURES AS TO SWING REARWARDLY FROM THEIR APERTURES CLOSING POSITION TOWARD SAID CENTER LINE OF SAID INDUCER MEANS SO AS TO THEN LIE ENTIRELY WITHIN THE CONFINES OF THE INDUCER MEANS, SAID BUCKETS, IN MEETING POSITION ON SAID CENTER LINE, EXTENDING TRANSVERSELY ACROSS SAID INDUCER MEANS AND THEN BLOCKING THE PASSAGE OF EXHAUST GAS AXIALLY THROUGH SAID INDUCER MEANS, THE MEETING PLANE OF SAID BUCKETS BEING LOCATED DOWNSTREAMWARDLY OF SAID APERTURES AND THE BUCKETS BEING SEMI-SPHERIC SO AS TO ALSO DIRECT SAID GAS FORWARDLY AND OUTWARDLY THROUGH SAID APERTURES, THEREBY TO REVERSE THE THRUST OF SAID PROPULSION PLANTS;

    THE PIVOT OF EACH OF SAID PLETON WHEEL BUCKETS BEING LOCATED ON CENTER WITH RESPECT TO THE CURVED PERIPHERAL SURFACE OF THE BUCKET;

    AND A POWERED OPERATING LINK ATTACHED TO EACH BUCKET AT A POINT OTHER THAN SAID PIVOT AND LOCATED OFFSET FROM SAID PIVOT.

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