US3709180A - Hydrofoil craft - Google Patents

Hydrofoil craft Download PDF

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Publication number
US3709180A
US3709180A US00067453A US3709180DA US3709180A US 3709180 A US3709180 A US 3709180A US 00067453 A US00067453 A US 00067453A US 3709180D A US3709180D A US 3709180DA US 3709180 A US3709180 A US 3709180A
Authority
US
United States
Prior art keywords
hull
hydrofoil craft
laterally spaced
bow
craft
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 - Lifetime
Application number
US00067453A
Other languages
English (en)
Inventor
E Brzoska
W Krenicki
L Kobylinski
M Krezelewski
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
Priority claimed from PL135792A external-priority patent/PL64784B1/pl
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3709180A publication Critical patent/US3709180A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type

Definitions

  • the subject of the present invention is a roll stabilizer for a hydrofoil craft with two laterally spaced bow, surface cutting or slightly immersed, bearing planes made as mirror image in relation to the plane of symmetry and adopted especially for fast crafts.
  • Hitherto known roll stabilizers of hydrofoil crafts equipped with two bearing planes at the bow were in the form of short horizontal planes, fixed individually or in the form of a ladder on the vertical supports of the bearing plane or in the form of stabilizing planes situated between side supports of the bearing plane outside of the hull of the hydrofoil craft.
  • Stabilizers like these are not efficient enough as their stabilizing force is effective only when large disturbances of balance take place, whereas their placement next to the bearing plane increases the resistance of the hydrofoil craft at start and in movement on rough water.
  • An object of the present invention is to provide a roll stabilizer for hydrofoil craft with two laterally spaced bow, surface cutting or slightly immersed bearing planes which makes possible the elimination of the disadvantages mentioned above.
  • the advantages of the present stabilizer includes the absence of harmful influence on the bearing planes, and provides reaction to lurching of the hydrofoil craft due to small disturbances with no increase in the resistance.
  • the stabilizer situated so as to be above the in-flight calm water-line constitutes the structural link between the two bow bearing planes, making an integral structural unit in the form of a light frame which results in avoiding of the necessity for heavy supports and complicated solutions applied hitherto when fixing the bearing planes to the hull of the hydrofoil craft and ensures at the same time their high strength and elimination of vibrations.
  • FIG. 1 shows a surface cutting, laterally spaced bow bearing planes and the rolling stabilizer of the hydrofoil craft between them in front view, and
  • FIG. 2 shows slightly immersed laterally spaced bow bearing planes and the rolling stabilizer of the hydrofoil craft between them in front view. 1
  • the laterally spaced, downwardly extending supports 2, 2' of the laterally spaced bow bearing planes 3, 3' which have their inboard ends laterally spaced apart; between the bearing planes 3, 3 and supports 2, 2', is situated the roll stabilizer 4 of hydrofoil craft additionally supported with the support 5.
  • the roll stabilizer 4 is situated above the water-line 6 during flight of the hydrofoil craft on calm water.
  • the geometrical characteristics of the roll stabilizer 4 of the hydrofoil craft may be constant or variable along its span.
  • the symmetrical or unsymmetrical immersing of the roll stabilizer of the hydrofoil craft cause the generation of a stabilizing torque which ceases at the moment of the return of the hydrofoil craft to the balance position.
  • a hydrofoil craft comprising:
  • means for hydrodynamically supporting said hull above the water at high speeds comprising a pair of laterally spaced bow bearing planes having laterally spaced apart inboard ends providing a space between them beneath the center of said hull free of bearing planes,
  • roll stabilizer means beneath said hull and above the space between said bow bearing planes, said roll stabilizer means being above the in-flight water line,
  • said bow bearing plane supporting means comprises a pair of laterally spaced supports extending downwardly from said hull and each connected to a said bow bearing plane adjacent the said inboard end thereof.
  • said bow bearing plane supporting means comprises a pair of laterally spaced supports extending downwardly from said hull, said roll stabilizing means extending between said supports, and connected thereto.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Paper (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Polymerisation Methods In General (AREA)
US00067453A 1969-09-09 1970-08-27 Hydrofoil craft Expired - Lifetime US3709180A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL135792A PL64784B1 (enrdf_load_stackoverflow) 1969-09-09

Publications (1)

Publication Number Publication Date
US3709180A true US3709180A (en) 1973-01-09

Family

ID=19950842

Family Applications (1)

Application Number Title Priority Date Filing Date
US00067453A Expired - Lifetime US3709180A (en) 1969-09-09 1970-08-27 Hydrofoil craft

Country Status (4)

Country Link
US (1) US3709180A (enrdf_load_stackoverflow)
DE (1) DE2043954C3 (enrdf_load_stackoverflow)
FR (1) FR2060789A5 (enrdf_load_stackoverflow)
GB (1) GB1295977A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756265A (en) * 1986-08-12 1988-07-12 Lane H T High speed boat lifting structures
US5520137A (en) * 1993-03-12 1996-05-28 Hitachi Zosen Corporation Twin-hull boat with hydrofoils

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274200A (en) * 1938-11-05 1942-02-24 Edward J Hill Anticavitation hydrofoil
US2603179A (en) * 1948-07-26 1952-07-15 Gardiner Neil William Hydrofoil craft
US2890672A (en) * 1957-05-01 1959-06-16 Jr Harold Boericke Watercraft hydrofoil device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274200A (en) * 1938-11-05 1942-02-24 Edward J Hill Anticavitation hydrofoil
US2603179A (en) * 1948-07-26 1952-07-15 Gardiner Neil William Hydrofoil craft
US2890672A (en) * 1957-05-01 1959-06-16 Jr Harold Boericke Watercraft hydrofoil device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756265A (en) * 1986-08-12 1988-07-12 Lane H T High speed boat lifting structures
US5520137A (en) * 1993-03-12 1996-05-28 Hitachi Zosen Corporation Twin-hull boat with hydrofoils

Also Published As

Publication number Publication date
DE2043954C3 (de) 1973-11-22
FR2060789A5 (enrdf_load_stackoverflow) 1971-06-18
GB1295977A (enrdf_load_stackoverflow) 1972-11-08
DE2043954A1 (de) 1971-04-08
DE2043954B2 (de) 1973-05-03

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