GB232472A - Improvements in means for the reduction of skin resistance of ships' or vessels' hulls - Google Patents

Improvements in means for the reduction of skin resistance of ships' or vessels' hulls

Info

Publication number
GB232472A
GB232472A GB18662/24A GB1866224A GB232472A GB 232472 A GB232472 A GB 232472A GB 18662/24 A GB18662/24 A GB 18662/24A GB 1866224 A GB1866224 A GB 1866224A GB 232472 A GB232472 A GB 232472A
Authority
GB
United Kingdom
Prior art keywords
bend
resistance
hulls
ships
vessels
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
GB18662/24A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB18662/24A priority Critical patent/GB232472A/en
Publication of GB232472A publication Critical patent/GB232472A/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
    • 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)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

232,472. Heppell, W. J. Aug. 6,1924. Resistance to propulsion, reducing.-In an arrangement for reducing the resistance to propulsion by supplying compressed air to the bottom of the hull. Air from a compressor is supplied to an inclined bend f, Fig. 1, located forward of the collision bulkhead m, the bend being associated with a fitting comprising an air control valve b operated by a rod c, and a non-return valve d located adjacent to the discharge bend d. In a modification, the rearwardly-directed distribution chamber g, Fig. 2, is secured by an intercostal plate. Lateral escape of the compressed air is prevented by bilge keels l, Fig. 5, and supplementary bilge keels with inwardly-inclined extensions j, p may be fitted.
GB18662/24A 1924-08-06 1924-08-06 Improvements in means for the reduction of skin resistance of ships' or vessels' hulls Expired GB232472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB18662/24A GB232472A (en) 1924-08-06 1924-08-06 Improvements in means for the reduction of skin resistance of ships' or vessels' hulls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18662/24A GB232472A (en) 1924-08-06 1924-08-06 Improvements in means for the reduction of skin resistance of ships' or vessels' hulls

Publications (1)

Publication Number Publication Date
GB232472A true GB232472A (en) 1925-04-23

Family

ID=10116282

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18662/24A Expired GB232472A (en) 1924-08-06 1924-08-06 Improvements in means for the reduction of skin resistance of ships' or vessels' hulls

Country Status (1)

Country Link
GB (1) GB232472A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011213324A (en) * 2010-04-02 2011-10-27 Mitsubishi Heavy Ind Ltd Resistance reducing device of hull
JP2012066742A (en) * 2010-09-24 2012-04-05 Mitsubishi Heavy Ind Ltd Frictional resistance alleviating apparatus for ship
JP2013216320A (en) * 2013-06-28 2013-10-24 National Maritime Research Institute Friction resistance reduction device of ship

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011213324A (en) * 2010-04-02 2011-10-27 Mitsubishi Heavy Ind Ltd Resistance reducing device of hull
JP2012066742A (en) * 2010-09-24 2012-04-05 Mitsubishi Heavy Ind Ltd Frictional resistance alleviating apparatus for ship
JP2013216320A (en) * 2013-06-28 2013-10-24 National Maritime Research Institute Friction resistance reduction device of ship

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