GB2018205A - Reducing hull resistance - Google Patents

Reducing hull resistance

Info

Publication number
GB2018205A
GB2018205A GB7917894A GB7917894A GB2018205A GB 2018205 A GB2018205 A GB 2018205A GB 7917894 A GB7917894 A GB 7917894A GB 7917894 A GB7917894 A GB 7917894A GB 2018205 A GB2018205 A GB 2018205A
Authority
GB
United Kingdom
Prior art keywords
slot
water
underside
air
hull
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.)
Withdrawn
Application number
GB7917894A
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.)
RHYS JONES M
Original Assignee
RHYS JONES M
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 RHYS JONES M filed Critical RHYS JONES M
Priority to GB7917894A priority Critical patent/GB2018205A/en
Publication of GB2018205A publication Critical patent/GB2018205A/en
Withdrawn legal-status Critical Current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
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • 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)
  • Treatment Of Fiber Materials (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

A hull for a boat is provided at the deepest point of its underside with a transverse slot, communicating with the air above the waterline. The portion of the hull immediately forward of the slot lies deeper in the water than the portion immediately aft of the slot and the forward portion is so shaped that at a predetermined rate of forward movement through the water air is induced at atmospheric pressure to the slot and streams out from the slot between the underside of the after portion and the water, thereby reducing drag. As described, the after portion may be covered with a fabric having a pile or nap of sheet water repellant fibres for holding the air layer. <IMAGE>
GB7917894A 1978-02-24 1979-05-23 Reducing hull resistance Withdrawn GB2018205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7917894A GB2018205A (en) 1978-02-24 1979-05-23 Reducing hull resistance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB757078 1978-02-24
GB7917894A GB2018205A (en) 1978-02-24 1979-05-23 Reducing hull resistance

Publications (1)

Publication Number Publication Date
GB2018205A true GB2018205A (en) 1979-10-17

Family

ID=26241522

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7917894A Withdrawn GB2018205A (en) 1978-02-24 1979-05-23 Reducing hull resistance

Country Status (1)

Country Link
GB (1) GB2018205A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071763A1 (en) * 1981-07-20 1983-02-16 Franck Guigan Ship's hull with adjustable planing surface
US5787829A (en) * 1995-09-05 1998-08-04 Kawasaki Jukogyo Kabushiki Kaisha Apparatus and method for suppressing drag for small planing watercraft
WO2005009833A2 (en) * 2003-07-30 2005-02-03 Buddie Gordon Miller Slotted hulls for boats
CN106143787A (en) * 2015-03-25 2016-11-23 上海轻航气膜减阻船舶有限公司 Device at the bottom of ship by air layers reducing resistance economical ship

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071763A1 (en) * 1981-07-20 1983-02-16 Franck Guigan Ship's hull with adjustable planing surface
US5787829A (en) * 1995-09-05 1998-08-04 Kawasaki Jukogyo Kabushiki Kaisha Apparatus and method for suppressing drag for small planing watercraft
WO2005009833A2 (en) * 2003-07-30 2005-02-03 Buddie Gordon Miller Slotted hulls for boats
WO2005009833A3 (en) * 2003-07-30 2005-08-11 Buddie Gordon Miller Slotted hulls for boats
GB2419115A (en) * 2003-07-30 2006-04-19 Buddie Gordon Miller Slotted Hulls For Boats
GB2419115B (en) * 2003-07-30 2008-05-28 Buddie Gordon Miller Slotted Hulls For Boats
US7677190B2 (en) 2003-07-30 2010-03-16 Buddie Gordon Miller Slotted hulls for boats
CN106143787A (en) * 2015-03-25 2016-11-23 上海轻航气膜减阻船舶有限公司 Device at the bottom of ship by air layers reducing resistance economical ship
CN106143787B (en) * 2015-03-25 2019-06-04 上海轻航气膜减阻船舶有限公司 Ship by air layers reducing resistance economical ship bottom device

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)