CH466740A - Method and device for reducing the flow resistance on watercraft - Google Patents

Method and device for reducing the flow resistance on watercraft

Info

Publication number
CH466740A
CH466740A CH1119967A CH1119967A CH466740A CH 466740 A CH466740 A CH 466740A CH 1119967 A CH1119967 A CH 1119967A CH 1119967 A CH1119967 A CH 1119967A CH 466740 A CH466740 A CH 466740A
Authority
CH
Switzerland
Prior art keywords
watercraft
reducing
flow resistance
resistance
flow
Prior art date
Application number
CH1119967A
Other languages
German (de)
Inventor
Ball Giles Walter
Original Assignee
Gen Electric
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US451933A external-priority patent/US3303811A/en
Priority claimed from US451763A external-priority patent/US3303810A/en
Application filed by Gen Electric filed Critical Gen Electric
Publication of CH466740A publication Critical patent/CH466740A/en

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)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Traffic Control Systems (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
CH1119967A 1965-04-29 1966-04-21 Method and device for reducing the flow resistance on watercraft CH466740A (en)

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
CH466740A true CH466740A (en) 1968-12-15

Family

ID=27036511

Family Applications (2)

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
CH578266A CH452376A (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
CH578266A CH452376A (en) 1965-04-29 1966-04-21 Method and device for reducing the flow resistance on watercraft

Country Status (3)

Country Link
CH (2) CH466740A (en)
DE (1) DE1781369A1 (en)
GB (2) GB1119152A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CH452376A (en) 1968-05-31
GB1119152A (en) 1968-07-10
DE1781369A1 (en) 1970-12-03
GB1119153A (en) 1968-07-10

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