GB1277059A - Improvements in or relating to the reduction of drag - Google Patents

Improvements in or relating to the reduction of drag

Info

Publication number
GB1277059A
GB1277059A GB32972/69A GB3297269A GB1277059A GB 1277059 A GB1277059 A GB 1277059A GB 32972/69 A GB32972/69 A GB 32972/69A GB 3297269 A GB3297269 A GB 3297269A GB 1277059 A GB1277059 A GB 1277059A
Authority
GB
United Kingdom
Prior art keywords
boundary layer
water
mixer
additive
pump
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
Application number
GB32972/69A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
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
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB1277059A publication Critical patent/GB1277059A/en
Expired legal-status Critical Current

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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

1277059 Lubricating hulls GENERAL ELECTRIC CO 30 June 1969 [30 July 1968] 32972/69 Heading B7M Apparatus for reducing the drag on a vehicle, for example a submarine, moving through water includes a mixer 2 in which a liquid, preferably ambient water, is mixed with a water-soluble high molecular weight linear visco-elastic polymer. The resulting solution is passed via a conduit 3 to an annular duct 4 in the bow of the vehicle and thence is injected into the boundary layer through a porous or perforated plate 6. Downstream are located annular ducts 10 connected via manifold 12 to a pump 14, which sucks in the boundary layer through porous plates 11. This serves to stabilize the boundary layer by restricting its thickness, to achieve maximum effectiveness of the additive, which is most effective under conditions of high shear stress, and to achieve most efficient use of the additive, as the withdrawn solution is passed from the pump 14 to the mixer 2 for enriching and re-cycling. Reference has been directed by the Comptroller to Specification 1,119,153.
GB32972/69A 1968-07-30 1969-06-30 Improvements in or relating to the reduction of drag Expired GB1277059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74874168A 1968-07-30 1968-07-30

Publications (1)

Publication Number Publication Date
GB1277059A true GB1277059A (en) 1972-06-07

Family

ID=25010726

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32972/69A Expired GB1277059A (en) 1968-07-30 1969-06-30 Improvements in or relating to the reduction of drag

Country Status (3)

Country Link
DE (2) DE1938242A1 (en)
FR (1) FR2013968A1 (en)
GB (1) GB1277059A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225754A (en) * 1988-12-08 1990-06-13 Plessey Co Plc Marine body exhibiting low fluid friction

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE447891B (en) * 1985-04-02 1986-12-22 Olov Roger Bolstad SET AND DEVICE TO REDUCE FRICTION RESISTANCE TO A FORM THAT MOVES IN A FLUIDUM
AU7966087A (en) * 1987-02-24 1988-09-26 Horton, Corwin R. Bow foil
US5117882A (en) * 1987-02-24 1992-06-02 Corwin R. Horton Microbubble-generating and dispensing devices and methods
DE102016012672A1 (en) 2016-10-24 2018-04-26 Herbert Trenner Reduction of fuel consumption / energy consumption of watercraft by attaching / attaching / mounting / additional construction elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225754A (en) * 1988-12-08 1990-06-13 Plessey Co Plc Marine body exhibiting low fluid friction

Also Published As

Publication number Publication date
FR2013968A1 (en) 1970-04-10
DE6929749U (en) 1975-07-31
DE1938242A1 (en) 1970-02-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees