FR2230541A2 - Drag reduction system for ship's hulls - uses large velocity gradient layer of air injected beneath hull - Google Patents
Drag reduction system for ship's hulls - uses large velocity gradient layer of air injected beneath hullInfo
- Publication number
- FR2230541A2 FR2230541A2 FR7307442A FR7307442A FR2230541A2 FR 2230541 A2 FR2230541 A2 FR 2230541A2 FR 7307442 A FR7307442 A FR 7307442A FR 7307442 A FR7307442 A FR 7307442A FR 2230541 A2 FR2230541 A2 FR 2230541A2
- Authority
- FR
- France
- Prior art keywords
- hull
- air
- ship
- hulls
- velocity gradient
- 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.)
- Granted
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
-
- 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
- B63B2001/387—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes using means for producing a film of air or air bubbles over at least a significant portion of the hull surface
-
- 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)
- Ocean & Marine Engineering (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Jet Pumps And Other Pumps (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7301220A FR2230540A1 (en) | 1973-01-15 | 1973-01-15 | Method of reducing drag on ships hulls - layer of air around hull is formed from fresh air and air within layer |
FR7307442A FR2230541A2 (en) | 1973-01-15 | 1973-03-02 | Drag reduction system for ship's hulls - uses large velocity gradient layer of air injected beneath hull |
FR7313276A FR2283045A2 (fr) | 1973-01-15 | 1973-04-12 | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
FR7325258A FR2236717A2 (en) | 1973-01-15 | 1973-07-10 | Ship hull resistance reduction process - distributes air under hull from assembly moving in and out from centre |
FR7628152A FR2364809A2 (fr) | 1973-01-15 | 1976-09-20 | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7301220A FR2230540A1 (en) | 1973-01-15 | 1973-01-15 | Method of reducing drag on ships hulls - layer of air around hull is formed from fresh air and air within layer |
FR7307442A FR2230541A2 (en) | 1973-01-15 | 1973-03-02 | Drag reduction system for ship's hulls - uses large velocity gradient layer of air injected beneath hull |
FR7313276A FR2283045A2 (fr) | 1973-01-15 | 1973-04-12 | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
FR7325258A FR2236717A2 (en) | 1973-01-15 | 1973-07-10 | Ship hull resistance reduction process - distributes air under hull from assembly moving in and out from centre |
FR7628152A FR2364809A2 (fr) | 1973-01-15 | 1976-09-20 | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2230541A2 true FR2230541A2 (en) | 1974-12-20 |
FR2230541B2 FR2230541B2 (fr) | 1977-08-05 |
Family
ID=61021871
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7301220A Granted FR2230540A1 (en) | 1973-01-15 | 1973-01-15 | Method of reducing drag on ships hulls - layer of air around hull is formed from fresh air and air within layer |
FR7307442A Granted FR2230541A2 (en) | 1973-01-15 | 1973-03-02 | Drag reduction system for ship's hulls - uses large velocity gradient layer of air injected beneath hull |
FR7313276A Pending FR2283045A2 (fr) | 1973-01-15 | 1973-04-12 | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
FR7325258A Granted FR2236717A2 (en) | 1973-01-15 | 1973-07-10 | Ship hull resistance reduction process - distributes air under hull from assembly moving in and out from centre |
FR7628152A Granted FR2364809A2 (fr) | 1973-01-15 | 1976-09-20 | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7301220A Granted FR2230540A1 (en) | 1973-01-15 | 1973-01-15 | Method of reducing drag on ships hulls - layer of air around hull is formed from fresh air and air within layer |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7313276A Pending FR2283045A2 (fr) | 1973-01-15 | 1973-04-12 | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
FR7325258A Granted FR2236717A2 (en) | 1973-01-15 | 1973-07-10 | Ship hull resistance reduction process - distributes air under hull from assembly moving in and out from centre |
FR7628152A Granted FR2364809A2 (fr) | 1973-01-15 | 1976-09-20 | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
Country Status (1)
Country | Link |
---|---|
FR (5) | FR2230540A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2364809A2 (fr) * | 1973-01-15 | 1978-04-14 | Fiacre Jean Marie | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2607098A1 (fr) * | 1986-11-24 | 1988-05-27 | Pingon Pierre De | Catamaran a effet de surface |
US6092480A (en) * | 1997-08-01 | 2000-07-25 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Generation of bubbles for friction-reducing ship and method for reducing skin-friction |
EP3290324A1 (fr) * | 2016-08-30 | 2018-03-07 | Silverstream Technologies B.V. | Système de lubrification par air à double cavité |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3040688A (en) * | 1957-11-07 | 1962-06-26 | Gram Knud Fini | Ship having an air cushion under the bottom |
FR2230540A1 (en) * | 1973-01-15 | 1974-12-20 | Fiacre Jean Marie | Method of reducing drag on ships hulls - layer of air around hull is formed from fresh air and air within layer |
-
1973
- 1973-01-15 FR FR7301220A patent/FR2230540A1/fr active Granted
- 1973-03-02 FR FR7307442A patent/FR2230541A2/fr active Granted
- 1973-04-12 FR FR7313276A patent/FR2283045A2/fr active Pending
- 1973-07-10 FR FR7325258A patent/FR2236717A2/fr active Granted
-
1976
- 1976-09-20 FR FR7628152A patent/FR2364809A2/fr active Granted
Non-Patent Citations (1)
Title |
---|
NEANT * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2364809A2 (fr) * | 1973-01-15 | 1978-04-14 | Fiacre Jean Marie | Procede permettant de realiser une diminution de la resistance a l'avancement d'un navire |
Also Published As
Publication number | Publication date |
---|---|
FR2283045A2 (fr) | 1976-03-26 |
FR2230541B2 (fr) | 1977-08-05 |
FR2236717A2 (en) | 1975-02-07 |
FR2364809B1 (fr) | 1979-01-12 |
FR2230540A1 (en) | 1974-12-20 |
FR2236717B2 (fr) | 1977-12-23 |
FR2364809A2 (fr) | 1978-04-14 |
FR2230540B1 (fr) | 1977-02-11 |
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