SE8501639L - SET AND DEVICE TO REDUCE FRICTION RESISTANCE TO A FORM - Google Patents

SET AND DEVICE TO REDUCE FRICTION RESISTANCE TO A FORM

Info

Publication number
SE8501639L
SE8501639L SE8501639A SE8501639A SE8501639L SE 8501639 L SE8501639 L SE 8501639L SE 8501639 A SE8501639 A SE 8501639A SE 8501639 A SE8501639 A SE 8501639A SE 8501639 L SE8501639 L SE 8501639L
Authority
SE
Sweden
Prior art keywords
gas
fluid
reduce friction
friction resistance
sides
Prior art date
Application number
SE8501639A
Other languages
Swedish (sv)
Other versions
SE447891B (en
SE8501639D0 (en
Inventor
Olov Roger Bolstad
Original Assignee
Olov Roger Bolstad
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 Olov Roger Bolstad filed Critical Olov Roger Bolstad
Priority to SE8501639A priority Critical patent/SE447891B/en
Publication of SE8501639D0 publication Critical patent/SE8501639D0/en
Priority to PCT/SE1986/000114 priority patent/WO1986005758A1/en
Priority to AU56912/86A priority patent/AU5691286A/en
Publication of SE8501639L publication Critical patent/SE8501639L/en
Publication of SE447891B publication Critical patent/SE447891B/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
    • 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)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Machine Tool Units (AREA)
  • Advancing Webs (AREA)
  • Toys (AREA)

Abstract

Method and device for reducing the frictional resistance against an object which is moving in a fluid, during which movement a stream of gas is blown out along that side or those sides of the object (26) which are in contact with the fluid. The side or sides are covered with, or constituted by, a material (28) pervious to gas and presenting a low pressure drop in the gas under its passage through the material. In connection with the exhaust through the material the gas is imparted pressure pushes, e.g. by the material (28) constituting a wall in a chamber (16) with a variable volume. The pressure pushes promote the production of micro-bubbles when the gas is exhausted through the material (28).
SE8501639A 1985-04-02 1985-04-02 SET AND DEVICE TO REDUCE FRICTION RESISTANCE TO A FORM THAT MOVES IN A FLUIDUM SE447891B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE8501639A SE447891B (en) 1985-04-02 1985-04-02 SET AND DEVICE TO REDUCE FRICTION RESISTANCE TO A FORM THAT MOVES IN A FLUIDUM
PCT/SE1986/000114 WO1986005758A1 (en) 1985-04-02 1986-03-14 Method and device for reducing the frictional resistance against an object.
AU56912/86A AU5691286A (en) 1985-04-02 1986-03-14 Method and device for reducing the frictional resistance against an object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8501639A SE447891B (en) 1985-04-02 1985-04-02 SET AND DEVICE TO REDUCE FRICTION RESISTANCE TO A FORM THAT MOVES IN A FLUIDUM

Publications (3)

Publication Number Publication Date
SE8501639D0 SE8501639D0 (en) 1985-04-02
SE8501639L true SE8501639L (en) 1986-10-03
SE447891B SE447891B (en) 1986-12-22

Family

ID=20359748

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8501639A SE447891B (en) 1985-04-02 1985-04-02 SET AND DEVICE TO REDUCE FRICTION RESISTANCE TO A FORM THAT MOVES IN A FLUIDUM

Country Status (3)

Country Link
AU (1) AU5691286A (en)
SE (1) SE447891B (en)
WO (1) WO1986005758A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988006547A1 (en) * 1987-02-24 1988-09-07 Horton, Corwin, R. Bow foil
WO1988007956A1 (en) * 1987-04-16 1988-10-20 Allan Donald Thomas Microbubble injection device for reducing the fluid frictional resistance against a vessel
SE504386C2 (en) * 1994-05-30 1997-01-27 Bengt Wilhelm Toernqvist Bottom construction on a displacement hull
US7000554B2 (en) 2004-02-02 2006-02-21 Phipps Gary G B Frictionally reduced hull

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286674A (en) * 1965-03-17 1966-11-22 Robert G Thompson Solubility acceleration additive for mixing non-newtonian fluids
US3435796A (en) * 1967-11-13 1969-04-01 Us Navy Method and apparatus for drag reduction
GB1277059A (en) * 1968-07-30 1972-06-07 Gen Electric Improvements in or relating to the reduction of drag

Also Published As

Publication number Publication date
SE447891B (en) 1986-12-22
WO1986005758A1 (en) 1986-10-09
AU5691286A (en) 1986-10-23
SE8501639D0 (en) 1985-04-02

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