GB974655A - Wave making resistance reducing apparatus - Google Patents
Wave making resistance reducing apparatusInfo
- Publication number
- GB974655A GB974655A GB41127/60A GB4112760A GB974655A GB 974655 A GB974655 A GB 974655A GB 41127/60 A GB41127/60 A GB 41127/60A GB 4112760 A GB4112760 A GB 4112760A GB 974655 A GB974655 A GB 974655A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hull
- slits
- water
- air
- compartment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
974,655. Boats. M. KURIHARA. Nov. 30, 1960 [Dec. 1, 1959; Sept. 8, 1960], No. 41127/60. Headings B7A, B7M and B7V. A high-speed water vessel of hard chine section has one or more rearwardly facing ejection slits 10 formed on each side of the keel line in a step in the underwater bow section of the hull at a distance of from 15% to 35% of the load water line length of the hull from the bow, and means for passing fluid under pressure, e.g. sea water and/or air, to a compartment 11 which is open to the exterior of the hull at the slits 10 so that the fluid is ejected rearwardly of the slits to reduce the wave making resistance of the hull to motion, and guide vanes 9 are arranged in the compartment to distribute the fluid over the area of the slits 10 and to direct it towards the stern. A conduit 7 connects the compartment 11 with an air compressor (not shown) to supply the fluid which in Figs. 5 to 7 is air. In a further embodiment water is taken in through openings in the bottom of the hull and pumped to the compartment. Air is also supplied through a manifold having branch outlets, shrouded by U-shaped members, to mix with the water. The propellers of the vessel are set at a depth to encounter water free from entrained air. The fluid ejection slits may also be placed at the stern. The invention also effectively controls pitching of the vessel and assists propulsion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3785059 | 1959-12-01 | ||
| JP3948860 | 1960-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB974655A true GB974655A (en) | 1964-11-11 |
Family
ID=26377009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB41127/60A Expired GB974655A (en) | 1959-12-01 | 1960-11-30 | Wave making resistance reducing apparatus |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE597621A (en) |
| GB (1) | GB974655A (en) |
| SE (1) | SE303946B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1283694B (en) * | 1965-04-29 | 1968-11-21 | Gen Electric | Process for reducing the frictional resistance in watercraft |
| CN113335447A (en) * | 2021-07-16 | 2021-09-03 | 江苏科技大学 | Self-adaptive high-pressure inflation resistance reduction automatic control device and control method for M-type high-speed boat |
| CN113445934A (en) * | 2021-05-28 | 2021-09-28 | 上海交通大学 | Device for restraining vortex-induced motion of ocean platform by utilizing wave force |
-
1960
- 1960-11-30 BE BE597621A patent/BE597621A/en unknown
- 1960-11-30 GB GB41127/60A patent/GB974655A/en not_active Expired
- 1960-12-01 SE SE11626/60A patent/SE303946B/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1283694B (en) * | 1965-04-29 | 1968-11-21 | Gen Electric | Process for reducing the frictional resistance in watercraft |
| CN113445934A (en) * | 2021-05-28 | 2021-09-28 | 上海交通大学 | Device for restraining vortex-induced motion of ocean platform by utilizing wave force |
| CN113335447A (en) * | 2021-07-16 | 2021-09-03 | 江苏科技大学 | Self-adaptive high-pressure inflation resistance reduction automatic control device and control method for M-type high-speed boat |
Also Published As
| Publication number | Publication date |
|---|---|
| BE597621A (en) | 1961-03-15 |
| SE303946B (en) | 1968-09-09 |
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