GB717416A - Improvements in or relating to the propulsion of surface and underwater ships and other water craft - Google Patents

Improvements in or relating to the propulsion of surface and underwater ships and other water craft

Info

Publication number
GB717416A
GB717416A GB16013/51A GB1601351A GB717416A GB 717416 A GB717416 A GB 717416A GB 16013/51 A GB16013/51 A GB 16013/51A GB 1601351 A GB1601351 A GB 1601351A GB 717416 A GB717416 A GB 717416A
Authority
GB
United Kingdom
Prior art keywords
craft
hull
jet
jacket
water
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
GB16013/51A
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.)
HARRY NOEL LEGG
Original Assignee
HARRY NOEL LEGG
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 HARRY NOEL LEGG filed Critical HARRY NOEL LEGG
Priority to GB16013/51A priority Critical patent/GB717416A/en
Publication of GB717416A publication Critical patent/GB717416A/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)
  • Powder Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

717,416. Lubricating ships' hulls. LEGG, H. N. Oct. 6, 1952 [July 5, 1951], No. 16013/51. Class 113 (1) [Also in Group XXI] In a streamline watercraft such as a submarine or torpedo from which a water jet is directed rearwardly at high velocity over the external surface of the craft to reduce skin friction, viscous liquid is exuded from the surface of the craft where it is swept by the jet. A centrifugal pump 18 draws water from the nose 11 of the craft and delivers it through ducts 20 to form an annular jet at the transition point 12 in the hull's curvature where the hull is stepped for this purpose. Behind the point 12, a porous jacket 10 of sintered metal &c. encloses the hull proper and oil is forced into the space between them whence it exudes outwards through the porous jacket. To direct the water flow inwards as it reaches the after part of the hull, the porous jacket may be interrupted and the rear part be associated with a pump adapted to draw water inwards through the jacket whence it is delivered by the pump either to the main jet or to auxiliary jets rearwardly directed from the stern of the craft.
GB16013/51A 1951-07-05 1951-07-05 Improvements in or relating to the propulsion of surface and underwater ships and other water craft Expired GB717416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB16013/51A GB717416A (en) 1951-07-05 1951-07-05 Improvements in or relating to the propulsion of surface and underwater ships and other water craft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16013/51A GB717416A (en) 1951-07-05 1951-07-05 Improvements in or relating to the propulsion of surface and underwater ships and other water craft

Publications (1)

Publication Number Publication Date
GB717416A true GB717416A (en) 1954-10-27

Family

ID=10069605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16013/51A Expired GB717416A (en) 1951-07-05 1951-07-05 Improvements in or relating to the propulsion of surface and underwater ships and other water craft

Country Status (1)

Country Link
GB (1) GB717416A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969759A (en) * 1957-09-13 1961-01-31 Gen Electric Hydrodynamic drag reduction in vehicles through boundary layer control
US3016865A (en) * 1959-05-21 1962-01-16 Thompson Ramo Wooldridge Inc Method and apparatus for reducing drag on submerged vehicles
US3075489A (en) * 1960-10-28 1963-01-29 Thompson Ramo Wooldridge Inc Method and apparatus for reducing drag on submerged vehicles
US3194201A (en) * 1961-02-13 1965-07-13 Thomas G Lang Underwater missile
US3347197A (en) * 1964-09-10 1967-10-17 Paul A Scherer Foil systems

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969759A (en) * 1957-09-13 1961-01-31 Gen Electric Hydrodynamic drag reduction in vehicles through boundary layer control
US3016865A (en) * 1959-05-21 1962-01-16 Thompson Ramo Wooldridge Inc Method and apparatus for reducing drag on submerged vehicles
US3075489A (en) * 1960-10-28 1963-01-29 Thompson Ramo Wooldridge Inc Method and apparatus for reducing drag on submerged vehicles
US3194201A (en) * 1961-02-13 1965-07-13 Thomas G Lang Underwater missile
US3347197A (en) * 1964-09-10 1967-10-17 Paul A Scherer Foil systems

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