Ships – Boats – boat component – or attachment – Lifeboat
Patent
1985-09-10
1987-06-30
Blix, Trygve M.
Ships
Boats, boat component, or attachment
Lifeboat
114348, B63B 3500
Patent
active
046761853
ABSTRACT:
A free fall escape vehicle has surfaces of a deceleration structure that decelerate the vehicle upon entry into the water at a rate no greater than 4 g to 10 g by progressively increasing in area towards an escape vessel of the vehicle. In one form, the deceleration structure is circularly symmetrical normal to its axis, which can be approximated by a series of spaced-apart shells, each shell being a zone of a sphere the center of curvature of which is at or above the center of gravity of the escape vehicle; the condition can also be approximated by truncated sections of right circular cones. An escape vehicle similar to a lifeboat has a wedge-shaped deceleration structure with the sides of the wedge paralleling the fore-and-aft axis of the vessel, the structure can be approximated by a series of right circularly cylindrical shells or flat plates both having an effective center of curvature at or above the center of gravity of the vehicle. A double-wedge escape vehicle easily stores and has good control over transverse decelerations. A launch apparatus forces the vehicle to swing by gravity away from the stricken platform or vessel and releases it with the vehicle' s vertical axis as nearly parallel as possible to the velocity vector at water entry.
REFERENCES:
patent: 1107109 (1914-08-01), Powers
patent: 1133063 (1915-03-01), Sardynski
patent: 1379788 (1921-05-01), Stone
patent: 2082202 (1937-06-01), Frankfurt
patent: 2350344 (1944-06-01), Fraser
patent: 2686323 (1954-08-01), McCarty
patent: 2714731 (1955-08-01), Binmore
patent: 2891262 (1959-06-01), Miller
patent: 3064282 (1962-11-01), Kangas
patent: 3101149 (1963-08-01), Hurst
patent: 3747550 (1973-07-01), Stoebrl
Bartz C. T.
Blix Trygve M.
Seatek
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