Flyable hydrofoil vessel

• US 4,080,922 A
• Filed: 10/06/1976
• Issued: 03/28/1978
• Est. Priority Date: 09/08/1975
• Status: Expired due to Term

• Current Assignee: Curtis M. Brubaker
• Original Assignee: Curtis M. Brubaker
• Inventors: Brubaker, Curtis M.
• Primary Examiner(s): Blix, Trygve M.
• Assistant Examiner(s): Sotelo, Jesus D.
• Application Number:
  US05/730,013
• Time in Patent Office: 538 Days
• Field of Search: 114/271-276, 114/278, 114/280, 114/282, 114/122, 114/123, 244/81, 244/82, 244/90 R
• US Class Current: 114/282
• CPC Class Codes: B63B 1/30 retracting or folding B63B1/244 takes precedence
• CPC Class Codes: B63B 1/322 using aerodynamic elements, e.g. aerofoils producing a lifting force flying boats B64C35/00
• CPC Class Codes: B64C 35/00 Flying-boats; Seaplanes
• CPC Class Codes: B64C 39/12 Canard-type aircraft
• CPC Class Codes: Y02T 70/10 Measures concerning design or construction of watercraft hulls

Abstract

A high-performance hydrofoil craft is capable of achieving hullborne, foilborne and airborne configurations. Transition between modes may be driver controlled or automatic, as a function of forward speed. Emergency landings and quick stops are enabled.

Claims

1. In a hydrofoil vehicle,

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) a hydrofoil system connected with the hull, said system including left and right hydrofoil units, each unit having pivotal connection to the hull to rotate about a generally forwardly extending axis, and between first and second positions,

(c) each unit including strut means and hydrofoil sections connected therewith,

(d) said hydrofoil sections in said first positions of the units being partially submerged to provide lift to urge the forwardly moving hull upwardly out of the water, and said hydrofoil sections in said second positions of the units being partially submerged to provide lift for maintaining the forwardly moving hull raised relative to water surface level,

(c) and left and right wings carried by the hull to pivot about at least one axis, said wings being respectively coupled to the left and right units to rotate therewith as the units pivot between said first and second positions.

2. The vehicle of claim 1 wherein the strut means of each unit includes first and second struts which project generally radially away from said axis, and the hydrofoil sections includes first and second sections respectively connected with the first and second struts of each unit.

3. The vehicle of claim 2 wherein the first and second hydrofoil sections of each unit extend partially about said axis, and the first and second struts of each unit being spaced about said axis.

4. The vehicle of claim 3 wherein the first and second hydrofoil sections are integral.

5. The vehicle of claim 4 wherein each unit has generally quadrant configuration, said hydrofoil sections curving about said axis.

6. The vehicle of claim 2 wherein certain of said struts include pivoted flaps, and including means for controlling pivoting of said flaps.

7. The vehicle of claim 6 wherein certain flaps have positions wherein reaction forces generated by forward travel of the submerged flaps effect pivoting of the units into said first positions.

8. The vehicle of claim 2 wherein said first hydrofoil sections are characterized as having relatively low drag, and said second sections are characterized as having relatively high lift, said first and second sections submerged in said first positions of the units, and said first sections submerged when said second sections are elevated relative to the water level in said second positions of the units.

9. The vehicle of claim 1 wherein the units have third positions in which they are stowed within the boundary of the hull.

10. The vehicle of claim 1 including means to lock the hydrofoil sections in at least one of said positions.

11. In a hydrofoil vehicle

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) a hydrofoil system connected with the hull, said system including left and right hydrofoil units, each unit having pivotal connection to the hull to rotate about a generally forwardly extending axis, and between first and second positions,

(c) each unit including strut means and hydrofoil sections connected therewith,

(d) said hydrofoil sections in said first positions of the units being partially submerged to provide lift to urge the forwardly moving hull upwardly out of the water, and said hydrofoil sections in said second positions of the units being partially submerged to provide lift for maintaining the forwardly moving hull raised relative to water surface level,

(e) and left and right wings carried by the hull to pivot about forwardly extending axis, said left and right wings being respectively coupled to the left and right units to rotate therewith as the units pivot between said first and second positions.

12. The vehicle of claim 11 wherein the wings have generally vertically upright stowed positions in which the wings are decoupled from said units.

13. In a hydrofoil vehicle,

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) a hydrofoil system connected with the hull, said system including left and right hydrofoil units, each unit having pivotal connection to the hull to rotate about a generally forwardly extending axis, and between first and second positions,

(c) each unit including strut means and hydrofoil sections connected therewith,

(d) said hydrofoil sections in said first positions of the units being partially submerged to provide lift to urge the forwardly moving hull upwardly out of the water, and said hydrofoil sections in said second positions of the units being partially submerged to provide lift for maintaining the forwardly moving hull raised relative to water surface level,

(e) left and right wings carried by the hull to pivot about forwardly extending axes, a stabilizer elevator carried by the vehicle, and water level feeler struts carried to pivot at the outboard ends of the wings, the wings having flaps operatively connected to said feeler struts, and also carried at the nose of the vehicle and operatively connected to the stabilizer elevator.

14. In a hydrofoil vehicle,

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) a hydrofoil system connected with the hull, said system including left and right hydrofoil units, each unit having pivotal connection to the hull to rotate about a generally forwardly extending axis, and between first and second positions,

(c) each unit including strut means and hydrofoil sections connected therewith,

(d) said hydrofoil sections in said first positions of the units being partially submerged to provide lift to urge the forwardly moving hull upwardly out of the water, and said hydrofoil sections in said second positions of the units being partially submerged to provide lift for maintaining the forwardly moving hull raised relative to water surface level,

(e) and forward hydrofoil means carried at the nose of the vehicle, there being a canard control foil carried to pivot at said nose above water level, said canard foil operatively connected with said forward hydrofoil means to be pivotally controlled thereby.

15. The vehicle of claim 14 including control means for controlling the forward hydrofoil means.

16. The vehicle of claim 14 including left and right wings carried by the hull to pivot about forwardly extending axis.

17. In a hydrofoil vehicle,

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) a hydrofoil system connected with the hull, said system including left and right hydrofoil units, each unit having pivotal connection to the hull to rotate about a generally forwardly extending axis, and between first and second positions,

(c) each unit including strut means and hydrofoil sections connected therewith,

(d) said hydrofoil sections in said first positions of the units being partially submerged to provide lift to urge the forwardly moving hull upwardly out of the water, and said hydrofoil sections in said second positions of the units being partially submerged to provide lift for maintaining the forwardly moving hull raised relative to water surface level,

(e) and including forward hydrofoil means carried at the nose of the vehicle, there being a horizontal airfoil stabilizer carried at the tail of the vehicle, said stabilizer operatively connected with said forward hydrofoil means to be pivotally controlled thereby.

18. In an airborne vehicle,

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) left and right wings carried by the hull, and

(c) water level feeler struts carried to pivot up and down at the outboard ends of the wings, the wings having swingable roll control flaps connected with said feeler struts whereby pivoting of the struts in response to contact with the surface of a body of water effects swinging of the flaps to control roll of the vehicle about its longitudinal axis and establish a level attitude of the vehicle.

19. The vehicle of claim 18 including a forward feeler strut carried to pivot up and down at the hull nose, the vehicle including a horizontal airfoil stabilizer operatively connected to said forward feeler strut to pivot up and down in response to said pivoting of the forward feeler strut.

20. In an airborne vehicle,

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) left and right wings carried by the hull,

(c) feeler struts carried to pivot up and down at the outboard ends of the wings, the wings having swingable flaps operatively connected with said feeler struts whereby pivoting of the struts effects swing of the flaps,

(d) a forward feeler strut carried to pivot up and down at the hull nose, the vehicle including a horizontal airfoil stabilizer operatively connected to said forward feeler strut to pivot up and down in response to said pivoting of the forward feeler strut, the forward feeler strut trailing below the level of the hull nose, and including hydrofoil means carried by trailing extent of said forward strut, said stabilizer located at the tail of the vehicle.

21. In a hydrofoil vehicle,

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) a hydrofoil system connected with the hull, said system including left and right hydrofoil units, each unit having pivotal connection to the hull to rotate about a generally forwardly extending axis, and between first and second positions,

(c) each unit including strut means and hydrofoil sections connected therewith,

(d) said hydrofoil sections in said first positions of the units being partially submerged to provide lift to urge the forwardly moving hull upwardly out of the water, and said hydrofoil sections in said second positions of the units being partially submerged to provide lift for maintaining the forwardly moving hull raised relative to water surface level,

(e) left and right wings carried by the hull to pivot about at least one axis relative to the hull,

(f) feeler struts carried to pivot up and down at the outboard ends of the wings, the wings having swingable roll control flaps operatively connected with the struts so that providing of the struts effects swinging of the flaps to control roll of the vehicle.

22. In a hydrofoil vehicle,

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) left and right units, each unit having pivotal connection to the hull to rotate about a generally forwardly extending axis, and between first and second positions,

(c) each unit including at least one planing section,

(d) said sections in said first positions of the units being positioned to provide lift to urge the forwardly moving hull upwardly out of the water, and said sections in said second positions of the units being positioned to provide lift for maintaining the forwardly moving hull raised relative to water surface level,

(e) and left and right wings carried by the hull to pivot about at least one axis, said wings being respectively coupled to the left and right units to rotate therewith as the units pivot between said first and second positions.

23. In a hydrofoil vehicle,

(a) a forwardly extending hull having left and right sides, the hull being forwardly movable,

(b) left and right wings carried by the hull to pivot between raised and lowered positions,

(c) left and right hydrofoil units carried by the hull to pivot between extended and retracted positions, the units in extended positions having hydrofoils which are variably pivotable while submerged in water to vary lift transmission to the hull, and

(d) said wings coupled to said units to pivot therewith.

24. The vehicle of claim 23 wherein said units include wing extensions to which the hydrofoils are connected to pivot relatively forwardly and rearwardly.

25. The vehicle of claim 24 wherein said hydrofoils are stowed adjacent the hull in said unit retracted position.

26. The vehicle of claim 24 including an auxiliary hydrofoil located between said left and right units, said auxiliary unit including a vertically movable strut and a foil carried thereby for movement upwardly and downwardly in submerged condition.