METHOD AND APPARATUS FOR REDUCING ACOUSTIC EMISSION FROM SUBMERGED SUBMARINES

PCT No. PCT/DE90/00192 Sec. 371 Date Nov. 15, 1990 Sec. 102(e) Date Nov. 15, 1990 PCT Filed Mar. 16, 1990 PCT Pub. No. WO90/10926 PCT Pub. Date Sep. 20, 1990.A method and an apparatus are disclosed serving to reduce acoustic emission from submerged submarines in which vibrations from moving mechanic...

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Bibliographische Detailangaben
Hauptverfasser:	KASTEN, ARNE, LAUKIEN, GUNTHER
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR AIRCRAFT CARRIERS ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MINE-LAYING MINE-SWEEPING MUSICAL INSTRUMENTS OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS PERFORMING OPERATIONS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS SOUND-PRODUCING DEVICES SUBMARINES TESTING TRANSPORTING
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Zusammenfassung:	PCT No. PCT/DE90/00192 Sec. 371 Date Nov. 15, 1990 Sec. 102(e) Date Nov. 15, 1990 PCT Filed Mar. 16, 1990 PCT Pub. No. WO90/10926 PCT Pub. Date Sep. 20, 1990.A method and an apparatus are disclosed serving to reduce acoustic emission from submerged submarines in which vibrations from moving mechanical elements within an inner region are transmitted to an outer hull via a vibration transmission path. For decoupling the outer hull as completely as possible from the moving mechanical elements, for example periodically moving nuclear reactor control rods, the vibrations are actively damped. Means are provided for ascertaining the motion of the mechanical elements relative to the outer hull and for superimposing upon said motion of counter-motion of opposite direction.