Removable silencer device for jet engines

Claim 1

A SILENCER DEVICE ADAPTED TO BE REMOVABLY FITTED TO THE OUTLET MOUTH OF A JET ENGINE AND COMPRISING IN COMBINATION A FIRST CONDUIT HAVING A SECOND-PROOFED CYLINDRICAL PORTION OF GREATER DIAMETER THAN SAID MOUTH ADAPTED TO BE LOCATED AT A DISTANCE FROM SAID MOUTH, IN SUBSTANTIALLY COAXIAL RELATIONSHIP THEREWITH; A SECOND CONDUIT COAXIALLY ARRANGED WITHIN SAID PORTION OF SAID FIRST CONDUIT AND HAVING A DIAMETER GREATER THAN THAT OF SAID MOUTH BUT SMALLER THAN THAT OF SAID PORTION, WHEREBY AN ANNULAR SPACE IS FORMED BETWEEN SAID CONDUITS, SAID SECOND CONDUIT PROTRUDING OUT OF SAID FIRST CONDUIT AND ENDING, WITHIN SAID PORTION OF SAID FIRST CONDUIT, IN A NOZZLE PROVIDING AIR INTAKE PASSAGES OPENING INTO SAID ANNULAR SPACE AND THE DISCHARGE END OF WHICH COMPRISES FLATTENED PASSAGES RESPECTIVELY LOCATED BETWEEN THE OUTLET ENDS OF SAID AIR INTAKE PASSAGES, AND JET HOMOGENIZING OBSTACLES FITTED WITHIN SAID SECOND CONDUIT.