SE1851408A1 - System for fluke drive - Google Patents

System for fluke drive

Info

Publication number
SE1851408A1
SE1851408A1 SE1851408A SE1851408A SE1851408A1 SE 1851408 A1 SE1851408 A1 SE 1851408A1 SE 1851408 A SE1851408 A SE 1851408A SE 1851408 A SE1851408 A SE 1851408A SE 1851408 A1 SE1851408 A1 SE 1851408A1
Authority
SE
Sweden
Prior art keywords
fluke
point
drive system
displacement means
spring means
Prior art date
Application number
SE1851408A
Other languages
Swedish (sv)
Inventor
Thomas Jemt
Original Assignee
Dolprop Ind Ab
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 Dolprop Ind Ab filed Critical Dolprop Ind Ab
Priority to SE1851408A priority Critical patent/SE1851408A1/en
Priority to PCT/SE2019/051121 priority patent/WO2020101554A1/en
Publication of SE1851408A1 publication Critical patent/SE1851408A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/30—Propulsive elements directly acting on water of non-rotary type
    • B63H1/36—Propulsive elements directly acting on water of non-rotary type swinging sideways, e.g. fishtail type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H19/00—Marine propulsion not otherwise provided for

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Prostheses (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

Fluke drive system, comprising a flexible fluke (600) and a fluke driving mechanism comprising a displacement means (601) arranged to be driven to move reciprocally upwards and downwards, which fluke (600) is connected to the displacement means (601) via a fluke connecting part (610).The invention is characterised in that the fluke connecting part (610) comprises a pivot joint (615), pivotally connecting a first point (a) of the displacement means (601) to a second point (b) of the fluke (600);an upper spring means (613), connecting a third point (c), arranged above the first point (a), of the displacement means (601) to a fourth point (d), arranged above the second point (b), of the fluke (600); anda lower spring means (614), connecting a fifth point (e), arranged below the first point (a), of the displacement means (601) to a sixth point (f), arranged below the second point (b), of the fluke (600).

Claims (7)

1. Fluke drive system, comprising a flexible fluke (600) and a fluke driving mechanismcomprising a displacement means (601) arranged to be driven to move reciprocallyupwards and downwards, wherein the fluke (600) is connected to the displacementmeans (601) via a fluke connecting part (610), characterised in that the fluke connectingpart (610) comprisesa pivot joint (615), pivotally connecting a first point (a) of the displacement means(601) to a second point (b) of the fluke (600);an upper spring means (613), connecting a third point (c), arranged above the firstpoint (a), of the displacement means (601) to a fourth point (d), arranged above thesecond point (b), of the fluke (600); anda lower spring means (614), connecting a fifth point (e), arranged below the firstpoint (a), of the displacement means (601) to a sixth point (f), arranged below the second point (b), of the fluke (600).
2. Fluke drive system according to claim 1, characterised in that the said pivot joint(615), the upper spring means (613) and the lower spring means (614) are the onlymechanical connections between the displacement means (601) and the fluke (600)affecting the mechanical behaviour of the fluke (600) in relation to the fluke driving mechanism.
3. Fluke drive system according to claim 1 or 2, characterised in that the springconstant of the upper spring means (614) is larger, such as at least twice, the spring constant of the lower spring means (613).
4. Fluke drive system according to any one of the preceding claims, characterised in that first (a), third (c) and fifth (e) points are all rigidly connected to each other.
5. Fluke drive system according to any one of the preceding claims, characterised in that second (b), fourth (d) and sixth (f) points are all rigidly connected to each other. Documcntl, 2018-11-12 24
6. Fluke drive system according to any one of the preceding claims, characterised inthat the fluke (400) is made from a flexible material, preferably having flexible steel inserts (401) along its periphery.
7. Fluke drive system according to c|aim 6, characterised in that the fluke (400)comprises a remote controlled hydraulically or pneumatically operated stiffening system(402), arranged to make the fluke (400) stiffer as a result of a supplied higher hydraulic or pneumatic pressure to the stiffening system (402). Documcntl, 2018-11-12
SE1851408A 2018-11-12 2018-11-12 System for fluke drive SE1851408A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE1851408A SE1851408A1 (en) 2018-11-12 2018-11-12 System for fluke drive
PCT/SE2019/051121 WO2020101554A1 (en) 2018-11-12 2019-11-07 System for fluke drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1851408A SE1851408A1 (en) 2018-11-12 2018-11-12 System for fluke drive

Publications (1)

Publication Number Publication Date
SE1851408A1 true SE1851408A1 (en) 2020-05-13

Family

ID=70730879

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1851408A SE1851408A1 (en) 2018-11-12 2018-11-12 System for fluke drive

Country Status (2)

Country Link
SE (1) SE1851408A1 (en)
WO (1) WO2020101554A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE571273C (en) * 1931-11-21 1933-02-25 Robert Strehlau Arrangement for watercraft that are propelled by means of reciprocating, pivoting fins
US2696797A (en) * 1949-06-16 1954-12-14 Theron D Whidden Manual propelling and guiding means
SU484129A1 (en) * 1973-05-03 1975-09-15 Институт гидромеханики АН УССР Waving fin mover
JPS52103196A (en) * 1976-02-25 1977-08-30 Naoji Itsushiki C type or v type flexible vibration blade propulsive device
DE7704302U1 (en) * 1977-02-12 1977-09-01 Laser, Otto, 3546 Voehl MECHANICAL DRIVE FOR MOVEMENT IN WATER, IN PARTICULAR BOAT DRIVE
NO140231C (en) * 1977-11-11 1979-07-25 Einar Jakobsen WAVE ENGINE FOR BOAT PROPULSION
SE532755C2 (en) * 2007-04-04 2010-04-06 Dolprop Ind Ab Watercraft and propulsion device for watercraft
KR101339790B1 (en) * 2012-01-03 2013-12-11 한국과학기술원 Underwater thrusting apparatus with a function of adjusting stiffness in caudal fin
CN203876975U (en) * 2014-04-04 2014-10-15 渤海船舶职业学院 Small underwater unmanned vehicle driving device
CN106184677A (en) * 2016-09-23 2016-12-07 江西洪都航空工业集团有限责任公司 A kind of machine fish using Novel actuating mechanism

Also Published As

Publication number Publication date
WO2020101554A1 (en) 2020-05-22

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Legal Events

Date Code Title Description
NAV Patent application has lapsed