Antisurge system adapted to prevent the stalling of turbine aeroengines

Claim 1

IN COMBINATION WITH A TURBINE AEROENGINE INCLUDING A COMPRESSOR SUBJECT TO SURGES, THE PROVISION OF AN ANTISURGE ARRANGEMENT COMPRISING SIGNALLING MEANS DETECTING THE SURGES AND INCLUDING A CHAMBER, TWO DIAPHRAGMS SUBDIVIDING SAID CHAMBER INTO THREE SEPARATE COMPARTMENTS OF WHICH ONE OUTER COMPARTMENT IS PERMANENTLY CONNECTED WITH THE ATMOSPHERE, AN UNOBSTRUCTED CONNECTION BETWEEN ONE OF THE OTHER COMPARTMENTS AND THE COMPRESSOR, A THROTTLED CONNECTION BETWEEN THE LAST COMPARTMENT, A THE COMPRESSOR, MEANS THROUGH WHICH THE TWO FIRST-MEMTIONED COMPARTMENTS COMMUNICATE, A MEMBER RIGIDLY INTERCONNECTING THE TWO DIAPHRAGMS, A VALVE CONTROLLED BY SAID INTERCONNECTING MEMBER AND CONTROLLING LAST-MEMTIONED MEANS, A MEMBER ADAPTED TO UNLOAD THE ENGINE TO PREVENT A STALLING OF THE ENGINE UNDER THE ACTION OF SURGES, AND MEANS OPERATIVELY INTERCONNECTING THE DIAPHRAGM SYSTEM WITH THE ENGINE-UNLOADING MEMBER AND ADAPTED TO TRANSMIT TO THE LATTER WITH A VERY SHORT TIME LAG THE SHIFTING OF THE DIAPHRAGM SYSTEM PRODUCED BY THE SURGES ACTING DIFFERENTIALLY IN THE TWO LAST-MENTIONED COMPARTMENTS, THE VALVE CONTROLLING THE MEANS THROUGH WHICH THE TWO FIRSTMENTIONED COMPARTMENTS COMMUNICATE OPENING SAID COMMUNICATING MEANS UPON SHIFTING OF THE DIAPHRAGM-INTERCONNECTING MEMBER.