GB924374A - Improvements in and relating to hydrofoil assemblies - Google Patents

Improvements in and relating to hydrofoil assemblies

Info

Publication number
GB924374A
GB924374A GB1189660A GB1189660A GB924374A GB 924374 A GB924374 A GB 924374A GB 1189660 A GB1189660 A GB 1189660A GB 1189660 A GB1189660 A GB 1189660A GB 924374 A GB924374 A GB 924374A
Authority
GB
United Kingdom
Prior art keywords
drag
assembly
blade
equilibrium
elements
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
GB1189660A
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.)
MICHAEL AUGUSTUS TULK TRASENST
Original Assignee
MICHAEL AUGUSTUS TULK TRASENST
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 MICHAEL AUGUSTUS TULK TRASENST filed Critical MICHAEL AUGUSTUS TULK TRASENST
Priority to GB1189660A priority Critical patent/GB924374A/en
Publication of GB924374A publication Critical patent/GB924374A/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 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B63B39/062—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water the foils being mounted on outriggers or the like, e.g. antidrift hydrofoils for sail boats

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Wind Motors (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Hydraulic Turbines (AREA)

Abstract

924,374. Hydrofoils. M. A. T. TRASENSTER July 4, 1961 [April 4, 1960], No. 11896/60. Class 113. An hydrofoil assembly including a hydrofoil blade mounted for pivoting movement about an axis transverse to the direction of travel of the craft has control means comprising two drag elements arranged to cause a pivoting movement of the blade, the pivoting movement induced by the elements being in opposite directions and the relative drag on the elements so varying with the position of the assembly with respect to the water surface that the resultant pivoting effect is zero when the assembly is in equilibrium and when the assembly is not in equilibrium is such as to restore equilibrium thereof. In one embodiment the hydrofoil blade 1 attached to the shaft 2 has an upper drag element 3 with enlarged portion 4 and a lower drag element 5 with a stabilizing fin 7. A decrease in speed and consequent loss of lift causes element 3 to become further immersed and the drag on element 3 will rise above that on the element 5 to produce a turning movement to increase the angle of attack of the blade 1 and return the assembly to a position of equilibrium. In another embodiment the shaft 2 of the blade 1 has secured thereto a drag element 5, 10, 12 and via pinions 9 and shaft 8 a second drag element 3, 4 of different and tapering shape so that at a certain depth the drag on the two elements will be in balance whereas above this the drag on the element 5, 10, 12 will dominate and below it the drag on the element 3, 4 will dominate,
GB1189660A 1960-04-04 1960-04-04 Improvements in and relating to hydrofoil assemblies Expired GB924374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1189660A GB924374A (en) 1960-04-04 1960-04-04 Improvements in and relating to hydrofoil assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1189660A GB924374A (en) 1960-04-04 1960-04-04 Improvements in and relating to hydrofoil assemblies

Publications (1)

Publication Number Publication Date
GB924374A true GB924374A (en) 1963-04-24

Family

ID=9994646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1189660A Expired GB924374A (en) 1960-04-04 1960-04-04 Improvements in and relating to hydrofoil assemblies

Country Status (1)

Country Link
GB (1) GB924374A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338202A (en) * 1965-08-16 1967-08-29 Atlantic Hydrofoils Inc Mechanical control for submerged hydrofoil systems
US3459146A (en) * 1967-05-19 1969-08-05 William C Prior Hydrofoil watercraft
WO2005039965A3 (en) * 2002-07-03 2006-02-23 John Slattebo Manual hydrofoil and spar truss assembly for wind powered watercraft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338202A (en) * 1965-08-16 1967-08-29 Atlantic Hydrofoils Inc Mechanical control for submerged hydrofoil systems
US3459146A (en) * 1967-05-19 1969-08-05 William C Prior Hydrofoil watercraft
WO2005039965A3 (en) * 2002-07-03 2006-02-23 John Slattebo Manual hydrofoil and spar truss assembly for wind powered watercraft

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