IN2014DN06630A - - Google Patents

Info

Publication number
IN2014DN06630A
IN2014DN06630A IN6630DEN2014A IN2014DN06630A IN 2014DN06630 A IN2014DN06630 A IN 2014DN06630A IN 6630DEN2014 A IN6630DEN2014 A IN 6630DEN2014A IN 2014DN06630 A IN2014DN06630 A IN 2014DN06630A
Authority
IN
India
Prior art keywords
air
propeller
ship
stern
dams
Prior art date
Application number
Inventor
Sung Yun Kim
Keunsil Park
Original Assignee
Sung Yun Kim
Keunsil Park
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 Sung Yun Kim, Keunsil Park filed Critical Sung Yun Kim
Publication of IN2014DN06630A publication Critical patent/IN2014DN06630A/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
    • 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
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B1/08—Shape of aft part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
    • 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)
  • Sealing Of Bearings (AREA)
  • Sliding-Contact Bearings (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The present invention relates to an air cavity and air lubrication system ship having a stern shape of stepped form around the propeller and the ship comprises: ship bottom dams and stern dams (stern steps) which are attached and secured at predetermined intervals in the width direction of the hull on the ship s bottom apart from the bow and on the stern and which extend in the length direction of the hull so as to form a plurality of air cavities; a plurality of air supply tubes which are installed perpendicularly on the ship so as to supply air to the air cavities and which have aperture adjusting valves while also being equipped with air supply machinery for supplying compressed air; slots of which a plurality are formed at predetermined intervals in the length direction of the ship bottom dams and which are formed in the ship bottom dams in such a way as to not only allow air communication between air cavities but also to supply some air to the ship s sides; and steps which are provided to the rear of the rudder while constituting the discharge end of the stern dam (stern step) so as to block the inflow of discharged air towards the propeller by inducing a continuous vacuum by causing speed differences in the wake of the propeller. According to the present invention because of the stern shape of stepped form it is possible to obtain the advantage of reduced carbon dioxide production because the air and the air bubbles that flow in from the front of the propeller are blocked and unable to flow in towards the propeller and at the same time are discharged smoothly to the rear of the propeller because of the use of the vacuum which is to say the suction force generated at the steps due to the high speed wake of the propeller and thus the reversing efficiency is improved and the air lubrication reduces the surface area of friction between the hull and the water and minimises frictional resistance.
IN6630DEN2014 2012-02-01 2013-01-31 IN2014DN06630A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120010225A KR101348081B1 (en) 2012-02-01 2012-02-01 Air cavity and air lubrication type ship with stern of step shape forming at propeller area
PCT/KR2013/000785 WO2013115577A1 (en) 2012-02-01 2013-01-31 Air cavity and air lubrication system ship having stern shape of stepped form around the propeller

Publications (1)

Publication Number Publication Date
IN2014DN06630A true IN2014DN06630A (en) 2015-05-22

Family

ID=48905546

Family Applications (1)

Application Number Title Priority Date Filing Date
IN6630DEN2014 IN2014DN06630A (en) 2012-02-01 2013-01-31

Country Status (4)

Country Link
KR (1) KR101348081B1 (en)
CN (1) CN104080694B (en)
IN (1) IN2014DN06630A (en)
WO (1) WO2013115577A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014957B (en) * 2014-04-15 2017-03-29 上海智位机器人股份有限公司 The method of 3D printer and its controlling cashier power-cut-off contiuous printing
CN105584587A (en) * 2016-01-27 2016-05-18 王小兵 Self-suction steamship
CN105711792A (en) * 2016-02-04 2016-06-29 许爱军 Ship
CN105752309B (en) * 2016-04-06 2018-06-29 大连理工大学 Gas transmission release device based on axial hollow rudder stock and mixed gas cavity rudder blade
KR20180000008U (en) 2016-06-22 2018-01-02 현대중공업 주식회사 Air diverging device with a function of pipe section division at ship's rolling
KR102018030B1 (en) 2019-05-09 2019-10-14 이재동 Apparatus for air lubrication of ship
CN110562384A (en) * 2019-09-29 2019-12-13 成都市陈式船舶研发有限公司 Light floating propulsion ship body
CN112046219A (en) * 2020-09-21 2020-12-08 北京大学 Bionic amphibious robot based on air lubrication
KR102318804B1 (en) * 2020-11-13 2021-10-28 (주)결로이야기 Ship resistance reduction device using air
KR102612234B1 (en) * 2021-04-20 2023-12-08 박근실 Hull type of planning vessel with Air Lubricating System
CN114620183A (en) * 2021-12-26 2022-06-14 米建军 Method and device for reducing resistance of underwater vehicle
CN115848555B (en) * 2022-12-14 2024-03-01 中船(上海)节能技术有限公司 Bottom jet stabilization assembly and ship
KR20230007999A (en) 2022-12-27 2023-01-13 김성윤 Air Lubricating Ship Equipped With Propeller Combined With Modified Section of Blade

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595191A (en) * 1968-10-11 1971-07-27 John Wakelam Grundy Ships and boats
NL9301476A (en) * 1993-08-25 1995-03-16 Tille Scheepsbouw B V Method for reducing the friction between the base of a vessel and the water, and vessel designed for using the method
EP1361151A1 (en) * 2002-05-07 2003-11-12 DK Group N.A. N.V. Air cavity vessel with air deflector
NL1025481C2 (en) * 2004-02-13 2005-08-19 Cornelis Arie Adrianus Boon Vessel with air chambers for reducing the resistance between the hull and the water.
KR200366231Y1 (en) * 2004-08-18 2004-11-04 김광남 Structure of high-speed small-sized vessel
CN101331053A (en) * 2006-05-24 2008-12-24 Dk集团荷属安的列斯群岛公司 Air cavity vessel
DK2272747T3 (en) * 2008-04-01 2019-06-17 National Institute Of Maritime Port And Aviation Tech DRAWING RESISTANCE REDUCTION DEVICE FOR SHIP
JP5311540B2 (en) 2008-04-08 2013-10-09 独立行政法人海上技術安全研究所 Air bubble entrainment prevention device for ships
KR100992261B1 (en) 2008-05-06 2010-11-05 현대중공업 주식회사 Vessel with air cavity having longitudinal and transverse partitions
CN102310920A (en) * 2010-06-30 2012-01-11 王俊凯 Air insulation speed boat
GR1007493B (en) * 2010-08-26 2011-12-23 Δημητριος Ιωαννου Δαμτσας Hull ventilation system for high-speed watercrafts

Also Published As

Publication number Publication date
KR101348081B1 (en) 2014-01-07
WO2013115577A1 (en) 2013-08-08
CN104080694A (en) 2014-10-01
KR20130088961A (en) 2013-08-09
CN104080694B (en) 2016-10-05

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