GB1437437A - Device for protecting the propeller of a water vessel against cavitation - Google Patents
Device for protecting the propeller of a water vessel against cavitationInfo
- Publication number
- GB1437437A GB1437437A GB3786573A GB3786573A GB1437437A GB 1437437 A GB1437437 A GB 1437437A GB 3786573 A GB3786573 A GB 3786573A GB 3786573 A GB3786573 A GB 3786573A GB 1437437 A GB1437437 A GB 1437437A
- Authority
- GB
- United Kingdom
- Prior art keywords
- propeller
- nozzle
- shaft
- protecting
- water flow
- 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
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/18—Propellers with means for diminishing cavitation, e.g. supercavitation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Nozzles (AREA)
Abstract
1437437 Apparatus for directing water entering a propeller CONSTRUCTIONS MECANIQUES DE NORMANDIE 9 Aug 1973 [13 June 1973] 37865/73 Heading B7V To prevent cavitation occurring on a propeller whose axis of rotation is arranged obliquely to the general direction of water flow past it a nozzle is mounted upstream of the propeller on a bearing supporting the shaft so as to be coaxial therewith and to deflect water toward the central part of the propeller, the deflected water flow being substantially parallel to the shaft. In one embodiment (Fig. 1) the nozzle either comprises a cylinder 16 whose peripheral wall is streamlined, or a plurality of cylinders arranged concentrically to one another and to the shaft. Alternatively the nozzle may comprise a frusto-conical member extending rearwardly from the bearing (Fig. 3, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7321448A FR2233225B1 (en) | 1973-06-13 | 1973-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1437437A true GB1437437A (en) | 1976-05-26 |
Family
ID=9120873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3786573A Expired GB1437437A (en) | 1973-06-13 | 1973-08-09 | Device for protecting the propeller of a water vessel against cavitation |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2336578C2 (en) |
| FR (1) | FR2233225B1 (en) |
| GB (1) | GB1437437A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5209642A (en) * | 1988-03-03 | 1993-05-11 | The United States Of America As Represented By The Secretary Of Transportation | Modified optimum pitch propeller |
| US4932908A (en) * | 1988-03-03 | 1990-06-12 | United States Of America | Energy efficient asymmetric pre-swirl vane and twisted propeller propulsion system |
| CH699473A2 (en) * | 2008-08-27 | 2010-03-15 | Drs Drag Reduction Systems Sa | Device for channeling the water flow around the hub of a ship's propeller. |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR405384A (en) * | 1908-11-12 | 1909-12-28 | Basile Soldatencow | Improvements made to the propellers of air or water navigation devices, and devices including application |
| GB401425A (en) * | 1932-07-07 | 1933-11-16 | Richard De Villamil | Improvements in or relating to screw propellers and screw fans |
| DE941048C (en) * | 1941-12-28 | 1956-03-29 | Josef Neukamm | Guide nozzle for ships with screw drive |
| DE802218C (en) * | 1948-10-02 | 1951-02-05 | Luebbe Schnitger | Propeller with upstream guide nozzles |
| DE932593C (en) * | 1949-10-13 | 1955-09-05 | Pleuger & Co | Nacelle containing propellers and motors for propelling ships |
| DE883255C (en) * | 1950-02-07 | 1953-07-16 | Erich Grundt | Sheathing for screw propeller |
| FR1181456A (en) * | 1957-08-07 | 1959-06-16 | Device for improving the performance of a streamlined body propelled in a fluid |
-
1973
- 1973-06-13 FR FR7321448A patent/FR2233225B1/fr not_active Expired
- 1973-07-18 DE DE19732336578 patent/DE2336578C2/en not_active Expired
- 1973-08-09 GB GB3786573A patent/GB1437437A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2336578C2 (en) | 1987-02-26 |
| DE2336578A1 (en) | 1975-01-09 |
| FR2233225A1 (en) | 1975-01-10 |
| FR2233225B1 (en) | 1976-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19930808 |