摘要:
Ce système fonctionnel à changement de milieu air/eau tel que notamment de contre mesure sous marine (1) destiné à être lancé notamment à partir d'un bâtiment de surface, du type comportant un corps de contre mesure (2) associé à un sac gonflable (3), est caractérisé en ce qu'il comporte des moyens formant prise d'air (4,5) de gonflage du sac, sollicités en position d'ouverture lors du lancement de celui-ci et en ce que ces prises d'air (4, 5) sont associées à des moyens de fermeture (10, 11), une fois le système lancé et le sac gonflé.
摘要:
A buoy is provided with first and second fixed hydrodynamic surfaces (15,16). When the buoy is towed through water by a tether (17), the first hydrodynamic surface (15) generates a downward force that reduces with increased speed through the water. The second hydrodynamic surface (16) generates an upward force that increases with increased speed through the water so that the buoy dives up to an upper critical speed through the water speed and rises beyond said upper critical speed through the water. The downward force of the first hydrodynamic surface (15) overcomes the buoyancy of the buoy at a lower critical speed through the water above, which the buoy dives. The hydrodynamic surface (15) comprises first fins (15) mounted on an outer casing (1) of the buoy and are spaced angularity and extend parallel to the centre axis of the buoy which is substantially aligned with the direction of towing. The second hydrodynamic surface (16) comprises second fins (16) mounted on the outer casing arranged upstream of the first fins (15) in the direction of towing. The second hydrodynamic surface (16) is set at an angle of incidence such that it creates a stalled flow condition at said upper critical speed through the water.
摘要:
Ein Unterseeboot (2) weist einen Geräteträger (6) auf, in dem eine kabelgeführte Kommunikationsboje (8) in einer Lagerungsposition zwischen Druckkörper und Außenhaut des Unterseebootes (2) gelagert ist. Zum Ein- und Ausbringen der Kommunikationsboje (8) sind Mittel zum translatorischen Bewegen des Geräteträgers (6) von der Lagerungsposition in eine Position außenseitig der Außenhaut und umgekehrt vorgesehen.
摘要:
A buoy designed to be dropped from an airborne aircraft and comprising a reduced-size body (201) with no scoop (105) and no inflating port (106), wherein the join between the buoy float (202) and the body is sealed and a triangular spoiler is arranged on the lower portion of the float for collecting air as the buoy drops towards the sea. An aperture (206) is provided in the float wall under the spoiler to enable the collected air to enter and inflate the float. A non-return valve (207) keeps the float inflated. As a result, inflation of the float may be improved and the rate of descent of the buoy may be restricted.
摘要:
A sonobuoy dispenser (11) including a rotatable tubular cylinder (12) having a plurality of adjustable sonobuoy support means longitudinally of its external surface is rotated and indexed by a power source and a geneva mechanism (31) controlled by a fibre optic switch means (41) and an electronics control unit (45).
摘要:
A device for releasing a load (3) from a housing (1) on impact with water. The load is supported in the housing by an O-ring (7) which is stretched about the load and fits into a shaped recess (11). On impact with the water the load is forced upwards into the housing, but the O-ring is prevented from moving upwards by a stop. The O-ring relaxes when the load has moved up far enough to be clear of it, then falls free. The load itself is then free to fall from the housing under the force of gravity.