GB1497516A - Flap actuator control unit for a hydrofoil - Google Patents

Flap actuator control unit for a hydrofoil

Info

Publication number
GB1497516A
GB1497516A GB34846/76A GB3484676A GB1497516A GB 1497516 A GB1497516 A GB 1497516A GB 34846/76 A GB34846/76 A GB 34846/76A GB 3484676 A GB3484676 A GB 3484676A GB 1497516 A GB1497516 A GB 1497516A
Authority
GB
United Kingdom
Prior art keywords
tube
housing
cylinder
pod
connects
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
GB34846/76A
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.)
Boeing Co
Original Assignee
Boeing Co
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 Boeing Co filed Critical Boeing Co
Priority to GB34846/76A priority Critical patent/GB1497516A/en
Publication of GB1497516A publication Critical patent/GB1497516A/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 
    • 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
    • B63B1/28—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils
    • B63B1/285—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils changing the angle of attack or the lift of the foil
    • B63B1/286—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils changing the angle of attack or the lift of the foil using flaps
    • 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

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)
  • Actuator (AREA)

Abstract

1497516 Hydrofoil craft BOEING CO 20 Aug 1976 34846/76 Heading B7A A flap actuator for a hydrofoil craft, e.g. an electric or hydraulic servo unit 22, 34 is located in a sealed housing 18 which is filled with an inert fluid, e.g. oil, the pressure of which is maintained in balance with the external dynamic pressure on the housing. The housing forms a part of the fin pod located below the water-line, and a tank 62 containing the fluid 66 connects therewith via a tube 60 manifold 58, 59, for more than one housing, and tube 56. Tube 60 also connects with a cylinder 70 via a tube 68. A check valve 64 is disposed in tube 60, and a free piston 72 floats in cylinder 70. A tube 74 connects one end of the cylinder 70 with the ambient water of the pod. In operation, external water pressure acting on the pod when the craft is moving, acts on one side of the piston 72 to pressurize the fluid in the cylinder and housing 18, to prevent ingress of ambient water to the housing which would cause corrosion.
GB34846/76A 1976-08-20 1976-08-20 Flap actuator control unit for a hydrofoil Expired GB1497516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB34846/76A GB1497516A (en) 1976-08-20 1976-08-20 Flap actuator control unit for a hydrofoil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34846/76A GB1497516A (en) 1976-08-20 1976-08-20 Flap actuator control unit for a hydrofoil

Publications (1)

Publication Number Publication Date
GB1497516A true GB1497516A (en) 1978-01-12

Family

ID=10370626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34846/76A Expired GB1497516A (en) 1976-08-20 1976-08-20 Flap actuator control unit for a hydrofoil

Country Status (1)

Country Link
GB (1) GB1497516A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220901A (en) * 1988-06-27 1990-01-24 David Percival Sailing vessel having fixed wing extending keels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220901A (en) * 1988-06-27 1990-01-24 David Percival Sailing vessel having fixed wing extending keels
GB2220901B (en) * 1988-06-27 1992-07-22 David Percival Control of sailing vessel by individual tabs

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee