Patent TW-201228884-A (TW)
Title: Recessed air cushion ship
Inventor: HUANG WEN-CHANG
IPC: B63B7/08
Filed: 2011-01-11
Abstract: Conventional air cushion ship has no self righting ability the pressed air are so easily lost. We cut the air chamber into many small air recess. We found every air recess need one air flow controller to charge air, the shape of air recess should be rectangular length beam ratio should be near the ship's length beam ratio. And use v bottom to minimize the air lost. When the air cushion ship list to one side, the vented air will cut the friction resistance one side and change the course heading, we found five way to solve this problem, one cut a concave space throughout the center line of the flat bottom that can collect half the vented air and lead to bow or stern. Two, drilled many holes along the low side 5 cm above from the flat bottom and supply the holes with pressed air. Three, add side float each side to increase the ship beam more than 25 meter. Four, make the air cushion ship catamarine and widen the beam more than 25 meter. Five, use hinge in hull construction to get more longer ship. Oil price push the steel price higher now modify old ship to be an air cushion ship can save some money we found 7 way 1. Cut the round bilge away and replaced by perpendicularly down side wall and widen the flat bottom that can be changed to be an air cushion recess bottom. 2. Take two sister ship and welded together plus bottom changed like 1. 3. Take one exist ship cut into fore and after two part add a middle body of 30% - 60% length of the original ship the depth of middle body is 130% - 160% depth of the original ship plus bottom changed like 1. can carry 40% - 80% more cargo run the same speed with original engine. 4. Take one exist ship first cut just before engine room then cut the fore body into port and starboard two part after body keep main engine intact cut into port, middle, starboard three part then widen the ship 30 -50% with new middle body the bottom gradual go down from water line to base line like dwg 1 show plus bottom changed like 1. keep form resistance increase smaller then the friction decrease by recess air cushion. 5. Like 4. cut exist ship into 5 part and widen the ship 30-60% with new body with a hinged conical extension like dwg 2 show plus bottom changed like 1. keep form resistance increase smaller then the friction decrease by recess air cushion. Can carry 30 -70% more cargo run same speed. 6. Like dwg 3 show cut exist ship into 12 part widen the ship 30 - 60% longer 30 -60% deeper 30 -60% plus bottom changed like 1. keep form resistance increase smaller then the friction decrease by recess air cushion. Can carry 2 -2.5 time cargo run same speed. 7. Like dwg 4 show cut exist ship into six part widen the ship 30 -60% and longer 30 - 60% with a huge hinge in center plus bottom changed like 1. keep form resistance increase smaller then the friction decrease by recess air cushion. Can carry 2 -2.5 time cargo run same speed. The air supplied more than necessary will leave the recess and flow into the suction of propeller and lower the thrust power we found a surface piercing propeller from hinge engine room can minimize this affect can save upto 20% power New air cushion ship should have new lines we found two way. 1. A elliptic ball beam length ratio from 4 to 10 cut half along its long axis and use the cut face as air cushion bottom. Above water line keep like conventional ship move two head and stern on same perpendicular line joint this two body by move LML line perpendicularly down to its widest point after that point LWL line perpendicularly down to base line. 2. Above water line keep like conventional ship and move LML line perpendicularly down to base line.