CH452376A - Method and device for reducing the flow resistance on watercraft - Google Patents
Method and device for reducing the flow resistance on watercraftInfo
- Publication number
- CH452376A CH452376A CH578266A CH578266A CH452376A CH 452376 A CH452376 A CH 452376A CH 578266 A CH578266 A CH 578266A CH 578266 A CH578266 A CH 578266A CH 452376 A CH452376 A CH 452376A
- Authority
- CH
- Switzerland
- Prior art keywords
- watercraft
- reducing
- flow resistance
- resistance
- flow
- Prior art date
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)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Traffic Control Systems (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US451933A US3303811A (en) | 1965-04-29 | 1965-04-29 | Method and apparatus for drag reduction |
US451763A US3303810A (en) | 1965-04-29 | 1965-04-29 | Additive drag reduction with recirculation |
Publications (1)
Publication Number | Publication Date |
---|---|
CH452376A true CH452376A (en) | 1968-05-31 |
Family
ID=27036511
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH578266A CH452376A (en) | 1965-04-29 | 1966-04-21 | Method and device for reducing the flow resistance on watercraft |
CH1119967A CH466740A (en) | 1965-04-29 | 1966-04-21 | Method and device for reducing the flow resistance on watercraft |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1119967A CH466740A (en) | 1965-04-29 | 1966-04-21 | Method and device for reducing the flow resistance on watercraft |
Country Status (3)
Country | Link |
---|---|
CH (2) | CH452376A (en) |
DE (1) | DE1781369A1 (en) |
GB (2) | GB1119152A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2251468B3 (en) * | 1972-10-20 | 2008-02-28 | Licentia Patent-Verwaltungs-Gmbh | Water vehicle e.g. ship, drive efficiency improving method, involves reducing frictional resistance of rotary drive propeller by adding water-soluble, flowable, strong polar and linear polymer of high molecular weight in boundary layer |
GB2225754A (en) * | 1988-12-08 | 1990-06-13 | Plessey Co Plc | Marine body exhibiting low fluid friction |
US6357374B1 (en) * | 2000-07-21 | 2002-03-19 | Cortana Corporation | Method and apparatus for increasing the effectiveness and efficiency of multiple boundary layer control techniques |
CN112478043B (en) * | 2020-11-19 | 2021-08-31 | 江苏科技大学 | Angle-adjustable damping device based on artificial puffer fish body thorns |
CN115649399B (en) * | 2022-11-21 | 2023-08-29 | 中国船舶科学研究中心 | Preparation method of underwater vehicle by utilizing hydrogel to delay transition of boundary layer |
CN116853410B (en) * | 2023-08-09 | 2024-05-14 | 中国船舶科学研究中心 | Synergistic drag reduction method for reducing resistance of underwater vehicle |
-
1966
- 1966-03-21 GB GB12283/66A patent/GB1119152A/en not_active Expired
- 1966-03-21 GB GB51464/67A patent/GB1119153A/en not_active Expired
- 1966-04-21 CH CH578266A patent/CH452376A/en unknown
- 1966-04-21 CH CH1119967A patent/CH466740A/en unknown
- 1966-04-22 DE DE19661781369 patent/DE1781369A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
GB1119152A (en) | 1968-07-10 |
DE1781369A1 (en) | 1970-12-03 |
GB1119153A (en) | 1968-07-10 |
CH466740A (en) | 1968-12-15 |
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