US3141436A - Hydrofoil assisted air cushion boat - Google Patents
Hydrofoil assisted air cushion boat Download PDFInfo
- Publication number
- US3141436A US3141436A US71838A US7183860A US3141436A US 3141436 A US3141436 A US 3141436A US 71838 A US71838 A US 71838A US 7183860 A US7183860 A US 7183860A US 3141436 A US3141436 A US 3141436A
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- US
- United States
- Prior art keywords
- craft
- hull
- air cushion
- air
- hydrofoil
- Prior art date
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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
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60V—AIR-CUSHION VEHICLES
- B60V1/00—Air-cushion
- B60V1/04—Air-cushion wherein the cushion is contained at least in part by walls
- B60V1/046—Air-cushion wherein the cushion is contained at least in part by walls the walls or a part of them being rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60V—AIR-CUSHION VEHICLES
- B60V1/00—Air-cushion
- B60V1/11—Stability or attitude control
- B60V1/12—Stability or attitude control by dividing the cushion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60V—AIR-CUSHION VEHICLES
- B60V1/00—Air-cushion
- B60V1/14—Propulsion; Control thereof
- B60V1/145—Propulsion; Control thereof using a watter propeller
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Definitions
- the present invention relates to high speed watercraft and more particularly to high speed amphibious craft wherein the craft is principally supported by a cushion of air.
- an air cushion craft refers to a craft which is principally supported'both at rest and in motion by a cushion of air. 'This air cushion is established beneath the craft by pumping air into the spaces between the craft and the surface over which it rests until the craft is raised sufiiciently above the surface for the air to es cape peripherally around the edges of the craft at the same rate as it is pumped in.
- Another object is the provision of an air cushion craft which isable to negotiate large waves.
- a further object is the provision of an air cushion craft which has both calm and rough water capability and is capable of safely obtaining higher speeds than known craft of this type.
- FIG. 1 is an end view, partly in section of an embodiment of the invention
- FIG. 2 is a section of the embodiment taken on the line 11-11 of FIG. 1 looking in the direction of the arrows;
- FIG. 3 is a section of the embodiment taken on the line IIIIII of FIG. 1 looking in the direction of the arrows;
- FIG. 4 is a bottom plan view of the embodiment shown in FIG. 1;
- FIG. 5 is a top plan view of the device
- FIG. 6 is a detail plan view of the flap bias and stop arrangement
- FIG. 7 is an end view of FIGURE 6
- FIG. 8 is a detail plan view of the hydrofoil adjusting system.
- FIG. 9 is a top view partly in section of the hydrofoil adjusting system.
- FIG. 1 a hull 11 illustrated as a trimaran having two outboard skegs 12 and a center line skeg 13. It will be realized, however, that the trimaran type craftis chosen for illustrative purposes only and that the invention could also be practiced on other types'of hulls. 'A deckhouse 14'from which 'the craft is operated is provided above the hull.
- a plurality of air intakes 16 in connection with air supply ducts 17 carry air from outside the craft to nozzles .18 opening into the spaces between skegs 12 and 13.
- 'Air pumping means "19, driven through a gear system 21 from a power source 22 cause theair to be forced through the ducts 17 and nozzle 18 into the space defined by skegs 12 and. 13, hull 11 and the Water surface illustrated by water line W.L.
- Power sources 22,'as illustrated in FIGS. 2 and 3, are shown as 'gas turbines having exhaust ducts 23 which discharge exhaust gases into either air intakes 16 or air supply ducts 17, thus addingefiiciency to the air supply system. Since the exhaust gases form only, a small portion of the total gas flow, no adverse heat problems are encountered.
- a bow flap '24 and a stern flap.26 are provided at the ends of each of the spaces defined by skegs 12.and 13.
- a hinge pin 27 passes through a series of projections 28 of hull 11 and through a series of projections 29 of the flap 26.
- a bias spring 31 urges flap 26 downwardlyagainst shoulders 32 leaving the'flap free to swing rearwardly against the tension of thespring whenever a wave hits the flap, thus allowing the wave to pass.
- Forward flaps 24 are mounted in the same manner although the bias spring may be omittedsince the air pressure under the craft acts to bias the flap in the forward direction.
- propulsion nacelles 33 mounted on struts 34 which may be made retractable in the manner shown in copending application of John Bader, Serial No. 834,899, filed August 19, 1959.
- propulsion is by means of a water propeller, it will be realized that other types of propulsion, air propellers for example, could be utilized without departing from the spirit of the invention.
- trimaran arrangement provides some transverse stability to the craft by separating the air cushion into two transverse parts. As the craft begins to roll, a higher pressure is built upon the lower side thus providing a restoring moment.
- a plurality of hydrofoils are also provided on the craft.
- a series of fixed hydrofoils 36 arecantilevered from the centerline skeg 13 and a pair of adjustable hydrofoils 37 are mounted on each end of the outboard skegs 12.
- hydrofoils 37 are each fixedly mounted on a pivot pin 38. Pivot pin moment.
- crank 38 is rotatably mounted on skeg 12 by means of bearings 39 and has a crank 41 having one end fixedly mounted thereon between bearings 39.
- an operating rod 42 is attached by means of a second pivot pin 43.
- Operating rod 42 is adapted for axial motion derived from controllable hydraulic cylinder 44 which may be actuated either manually or automati- .cally, by any suitable known control system.
- crank 41 causes pivot pin38 and hydrofoil 37 to rotate.
- This system can be operated by an autopilot system such as that used on present hydrofoil craft to give automatic roll and pitch control when the craft is in operation. It
- a plurality of wheels 47 are retractibly mounted onoutboard skegs 12. Normally the wheels are kept retracted but when land operation is required the wheels are dropped into operative position for travel over land and the propulsion nacelles 33 are retracted.
- the craft In operation the craft is given forward speed by means .of propulsion nacelles 33 and air pumping means 19 are started to provide air pressure under the craft. Air intakes 16 are positioned to aid air inflow at forward speeds. The exit angle of the air jets from nozzle 18 is adjusted The speed of the fore and aft air pumping means can be regulated to give proper trim to the craft for the sea conditions encountered, i.e. it may be desirable to provide more power to the bow jet than the stern jet.
- hydrofoils permits the air cushion boat to provide a smoother ride on waves and a greater degree of stability in the water than is possible with known air cushion craft.
- the use of bow and stern flaps and discharging the turbine exhaust into the air intake help to reduce the power requirements of the craft.
- the use of marine propellers and Water rudders results in smaller,
- An air cushion craft comprising:
- a plurality of ducts connecting the exhaust of said engine with each of said compartments respectively; means mounted on said hull for producing translatory motion of said craft; means mounted on selected side walls of said compartments adjacent the open face thereof for stabilizing said craft when traveling over an irregular surface.
- Anair cushion craft comprising:
- said compartments are formed by a plurality of at least three logitudinally mounted skegs and a plurality of hinged flaps, at least one at each end of said body to normally close the spaces between the ends of the skegs;
Description
J y 1964 1.. D. CATHERS ETAL 3 141,
HYDROFOIL ASSISTED AIR CUSHION BOAT Filed Nov. 25, 1960 4 Sheets-Sheet 1 INVENTOR.
LINCOLN 0. CATHERS y JOHN BADER AGENT.
y 21, 1954 L. D. CATHERS ETAL 3,141,436
HYDROFOIL ASSISTED AIR CUSHION BOAT Filed Nov. 25. 1960 4 Sheets-Sheet 2 FIG.2.
FIG.3.
IN VEN TOR.
LINCOLN D. CATHERS y JOHN BADER AGENT.
J y 21, 1964 L. D. CATHERS ETAL 3,141,436
HYDROFOIL. ASSISTED AIR CUSHION BOAT Filed Nov. 25, 1960 4 Sheets-Sheet 3 F l G. 5.
INVENTOR.
LINCOLN D. CATHERS By JOHN BADER Maw AGENT.
J y 1,964 D. CATHERS ETAL 3,141,436
HYDROFOIL ASSISTED AIR CUSHION- BOAT Filed Nov. 25, 1960 r 4 Sheets-Sheet 4 FIG. 6.
FIG. 8.
INVENTOR. LINCOLN o. CATHERS FIG. 9. JOHN BADER AGENT.
United States Patent 3,141,436 HYDROFOIL ASSISTED AIR CUSHION BOAT Lincoln 1). Cathers, 5117 Brentford Drive, Roekville, Md., and .Iohn Barter, 1835 Crandall Drive, San Diego, Calif. Filed Nov. 25, 1960, Ser. No. 71,838 2 Claims. (Cl. 114-665) (Granted under Title 35, US. Code (I952), sec. 266) The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.
The present invention relates to high speed watercraft and more particularly to high speed amphibious craft wherein the craft is principally supported by a cushion of air.
In the field of naval architecture, many types of configurations have been suggested to allow watercraft to travel economically at high speeds. Among these suggested configurations is the type of craft wherein an air cushion is provided between the hull and the water surface so that the hull'friction isgreatly reduced from conventional craft and a minimum of wave motion is transmitted to the hull. However, up until the present time, such craft, which have been built to operate over water have been plagued by problems caused by waves. Large waves on the water allow air to escape from beneath the hull, thus reducing pressure and causing a decrease in lift. Waves contacting the hull of the craft have caused severe rolling and pitching motions which at high speeds have been disastrous.
By the present invention the advantages of earlier craft have been retained but the aforedescribed disadvantages have been obviated. This is accomplished by the addition of auxiliary hydrofoils to add stability and help to negotiate a wave system.
As used in this application it is to be understood that the term an air cushion craft refers to a craft which is principally supported'both at rest and in motion by a cushion of air. 'This air cushion is established beneath the craft by pumping air into the spaces between the craft and the surface over which it rests until the craft is raised sufiiciently above the surface for the air to es cape peripherally around the edges of the craft at the same rate as it is pumped in.
It is therefore an object 'of' this invention to provide a stabilized air cushion craft.
Another object is the provision of an air cushion craft which isable to negotiate large waves.
A further object is the provision of an air cushion craft which has both calm and rough water capability and is capable of safely obtaining higher speeds than known craft of this type.
Other objects and many of the attendant advantages of this invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:
FIG. 1 is an end view, partly in section of an embodiment of the invention;
FIG. 2 is a section of the embodiment taken on the line 11-11 of FIG. 1 looking in the direction of the arrows;
FIG. 3 is a section of the embodiment taken on the line IIIIII of FIG. 1 looking in the direction of the arrows;
FIG. 4 is a bottom plan view of the embodiment shown in FIG. 1;
FIG. 5 is a top plan view of the device;
FIG. 6 is a detail plan view of the flap bias and stop arrangement;
FIG. 7 is an end view of FIGURE 6;
3,141,436 Patented July 21, 1964 FIG. 8 is a detail plan view of the hydrofoil adjusting system; and
FIG. 9 is a top view partly in section of the hydrofoil adjusting system.
Referring now to, the drawings wherein like reference numerals designate like or corresponding parts throughout the several views, there is shown in FIG. 1 a hull 11 illustrated as a trimaran having two outboard skegs 12 and a center line skeg 13. It will be realized, however, that the trimaran type craftis chosen for illustrative purposes only and that the invention could also be practiced on other types'of hulls. 'A deckhouse 14'from which 'the craft is operated is provided above the hull.
A plurality of air intakes 16 in connection with air supply ducts 17 carry air from outside the craft to nozzles .18 opening into the spaces between skegs 12 and 13. 'Air pumping means "19, driven through a gear system 21 from a power source 22 cause theair to be forced through the ducts 17 and nozzle 18 into the space defined by skegs 12 and. 13, hull 11 and the Water surface illustrated by water line W.L.
In order to distribute the air evenly at the nozzles, a plurality of transversely. and longitudinally mounted vanes 20 and 25, which may be pivotably mounted or alternatively, fixed, are mounted within nozzles 18. Power sources 22,'as illustrated in FIGS. 2 and 3, are shown as 'gas turbines having exhaust ducts 23 which discharge exhaust gases into either air intakes 16 or air supply ducts 17, thus addingefiiciency to the air supply system. Since the exhaust gases form only, a small portion of the total gas flow, no adverse heat problems are encountered.
In order to gain still more efiiciency a bow flap '24 and a stern flap.26 are provided at the ends of each of the spaces defined by skegs 12.and 13. As shown in'FIGS. 6 and 7 a hinge pin 27 passes through a series of projections 28 of hull 11 and through a series of projections 29 of the flap 26. A bias spring 31 urges flap 26 downwardlyagainst shoulders 32 leaving the'flap free to swing rearwardly against the tension of thespring whenever a wave hits the flap, thus allowing the wave to pass. Forward flaps 24 are mounted in the same manner although the bias spring may be omittedsince the air pressure under the craft acts to bias the flap in the forward direction.
Referring again to FIGS. l-4, forward water propulsion means are provided by propulsion nacelles 33 mounted on struts 34 which may be made retractable in the manner shown in copending application of John Bader, Serial No. 834,899, filed August 19, 1959. Although as shown the propulsion is by means of a water propeller, it will be realized that other types of propulsion, air propellers for example, could be utilized without departing from the spirit of the invention.
Steering is accomplished by means of a rudder 35 mounted at the aft end of centerline skeg 13. Again it will be realized that other known steering systems could be utilized without departing from the spirit of the invention.
It should be noted that the use of the trimaran arrangement provides some transverse stability to the craft by separating the air cushion into two transverse parts. As the craft begins to roll, a higher pressure is built upon the lower side thus providing a restoring moment.
To enhance both lateral and transverse stability a plurality of hydrofoils are also provided on the craft. As shown in FIGS. 14, a series of fixed hydrofoils 36 arecantilevered from the centerline skeg 13 and a pair of adjustable hydrofoils 37 are mounted on each end of the outboard skegs 12. As shown in FIGS. 8 and 9, wherein one type of adjusting means is illustrated, hydrofoils 37 are each fixedly mounted on a pivot pin 38. Pivot pin moment.
-by rotating vanes 20 about their axes.
38 is rotatably mounted on skeg 12 by means of bearings 39 and has a crank 41 having one end fixedly mounted thereon between bearings 39. To the opposite. end of crank 41 an operating rod 42 is attached by means of a second pivot pin 43. Operating rod 42 is adapted for axial motion derived from controllable hydraulic cylinder 44 which may be actuated either manually or automati- .cally, by any suitable known control system. As operating rod moves up and down sliding through bearings 46, crank 41 causes pivot pin38 and hydrofoil 37 to rotate. This system can be operated by an autopilot system such as that used on present hydrofoil craft to give automatic roll and pitch control when the craft is in operation. It
can be easily seen that by operating hydrofoils 37 in oppositedirections a rolling moment can be accomplished to counteract the rolling moment given the craft by wave ,action. The operation of the forward foils in the opposite direction from the after foils results in a pitching By activating all foils in the same direction an upward or downward motion may be produced. Fixed foils 36 are normally at least partially above the water line and act only when the craft encounters waves. The fixed foils then provide added lift to prevent diving and leaping in the seaway.
In order to add land capability to the craft a plurality of wheels 47 are retractibly mounted onoutboard skegs 12. Normally the wheels are kept retracted but when land operation is required the wheels are dropped into operative position for travel over land and the propulsion nacelles 33 are retracted.
In operation the craft is given forward speed by means .of propulsion nacelles 33 and air pumping means 19 are started to provide air pressure under the craft. Air intakes 16 are positioned to aid air inflow at forward speeds. The exit angle of the air jets from nozzle 18 is adjusted The speed of the fore and aft air pumping means can be regulated to give proper trim to the craft for the sea conditions encountered, i.e. it may be desirable to provide more power to the bow jet than the stern jet.
The use of hydrofoils permits the air cushion boat to provide a smoother ride on waves and a greater degree of stability in the water than is possible with known air cushion craft. The use of bow and stern flaps and discharging the turbine exhaust into the air intake help to reduce the power requirements of the craft. The use of marine propellers and Water rudders results in smaller,
cheaper and lighter installation.
-as is presently done on hydrofoil boats.
Obviously many modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.
What is claimed is:'
1. An air cushion craft comprising:
a hull member;
a plurality of open faced compartments formed in said hull for providing an air cushion between said hull and the surface over which said craft is designed to move;
a gas turbine engine;
a plurality of ducts connecting the exhaust of said engine with each of said compartments respectively; means mounted on said hull for producing translatory motion of said craft; means mounted on selected side walls of said compartments adjacent the open face thereof for stabilizing said craft when traveling over an irregular surface.
2. Anair cushion craft comprising:
a hull member;
a plurality of open faced compartments formed in said hull for providing an air cushion between said hull and the surface over which said craft is designed to move;
a gas turbine engine;
a plurality of ducts connecting the exhaust of said engine with each of said compartments respectively; said compartments are formed by a plurality of at least three logitudinally mounted skegs and a plurality of hinged flaps, at least one at each end of said body to normally close the spaces between the ends of the skegs;
means mounted on said hull for producing translatory motion of said craft;
means mounted on selected side walls of said compartments adjacent the open face thereof for stabilizing said craft when traveling over an irregular surface.
References Cited in the file of this patent UNITEDSTATES PATENTS 920,849 Fauber May 4, 1909 1,081,489 Currie Dec. 16, 1913 1,307,135 Lake June 17, 1919 1,412,848 Dunajelf Apr. 18, 1922 1,750,959 Lake Mar. 18, 1930 1,815,303 Kloen July 21, 1931 1,819,216 Warner Aug. 18, 1931 2,348,106 Brian May 2, 1944 2,356,349 Persson Aug. 22, 1944 2,444,318 Warner June 29, 1948 2,708,894 Hook May 24, 1955 3,016,864 Woodfield Ian. 16, 1962 3,027,862 Votre Apr. 3, 1962 3,031,999 Bader May 1, 1962 FOREIGN PATENTS 518,878 Great Britain Mar. 11, 1940 657,488 Great Britain Sept. 19, 1951 4,270 France Aug. 22, 1905 1,222,805
France Jan. 25, 1960
Claims (1)
1. AN AIR CUSHION CRAFT COMPRISING: A HULL MEMBER; A PLURALITY OF OPEN FACED COMPARTMENTS FORMED IN SAID HULL FOR PROVIDING AN AIR CUSHION BETWEEN SAID HULL AND THE SURFACE OVER WHICH SAID CRAFT IS DESIGNED TO MOVE; A GAS TURBINE ENGINE; A PLURALITY OF DUCTS CONNECTING THE EXHAUST OF SAID ENGINE WITH EACH OF SAID COMPARTMENTS RESPECTIVELY; MEANS MOUNTED ON SAID HULL FOR PRODUCING TRANSLATORY MOTION OF SAID CRAFT; MEANS MOUNTED ON SELECTED SIDE WALLS OF SAID COMPARTMENTS ADJACENT THE OPEN FACE THEREOF FOR STABILIZING SAID CRAFT WHEN TRAVELING OVER AN IRREGULAR SURFACE.
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US71838A US3141436A (en) | 1960-11-25 | 1960-11-25 | Hydrofoil assisted air cushion boat |
Applications Claiming Priority (1)
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US71838A US3141436A (en) | 1960-11-25 | 1960-11-25 | Hydrofoil assisted air cushion boat |
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US3141436A true US3141436A (en) | 1964-07-21 |
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US71838A Expired - Lifetime US3141436A (en) | 1960-11-25 | 1960-11-25 | Hydrofoil assisted air cushion boat |
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Cited By (46)
Publication number | Priority date | Publication date | Assignee | Title |
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US3191566A (en) * | 1964-02-21 | 1965-06-29 | Fred H Wilken | Water-borne take-off and landing craft for aircraft |
US3205847A (en) * | 1964-03-23 | 1965-09-14 | Bell Aerospace Corp | Combination aquatic-ground effect vehicle |
US3220501A (en) * | 1962-11-09 | 1965-11-30 | Lockheed Aircraft Corp | Ground effect machines |
US3251334A (en) * | 1964-04-16 | 1966-05-17 | Melville W Beardsley | Marine craft propulsion system |
US3272270A (en) * | 1964-02-28 | 1966-09-13 | Geoffrey F Hughes | Air cushion vehicle |
US3288236A (en) * | 1965-01-05 | 1966-11-29 | Padial Guillermo Solomon | Hydro-air cushion vessels |
US3306388A (en) * | 1963-08-23 | 1967-02-28 | Westland Aircraft Ltd | Ground effect vehicles with independent flexible stern skirt section |
US3354858A (en) * | 1965-04-06 | 1967-11-28 | Hovercraft Dev Ltd | Water-borne gas-cushion vehicles |
US3366195A (en) * | 1965-03-24 | 1968-01-30 | Douglas K. Warner | Heavy load ground effect machines |
US3390655A (en) * | 1967-01-17 | 1968-07-02 | Gen Dynamics Corp | Patrol craft |
US3405675A (en) * | 1965-04-06 | 1968-10-15 | Hovercraft Dev Ltd | Water-borne gas-cushion vehicles |
FR2002006A1 (en) * | 1968-02-16 | 1969-10-03 | British Hovercraft Corp Ltd | |
FR2002008A1 (en) * | 1968-02-16 | 1969-10-03 | British Hovercraft Corp Ltd | IMPROVEMENTS FOR AIR-CUSHION VEHICLES |
FR2002007A1 (en) * | 1968-02-16 | 1969-10-03 | British Hovercraft Corp Ltd | |
US3473503A (en) * | 1968-02-07 | 1969-10-21 | Fred C Gunther | Air-supported marine vehicle |
FR2060011A1 (en) * | 1969-05-23 | 1971-06-11 | Gehlen Hermann | |
US3767141A (en) * | 1969-11-03 | 1973-10-23 | Veldhuizen J Van | Air cushion vehicle |
US3807339A (en) * | 1970-07-29 | 1974-04-30 | Vasper Thornycroft Ltd | Gas-cushion vehicle |
US4151893A (en) * | 1977-09-08 | 1979-05-01 | The United States Of America As Represented By The Secretary Of The Navy | Wing in ground effect vehicle |
JPS5722493B1 (en) * | 1971-07-14 | 1982-05-13 | ||
US4411212A (en) * | 1979-06-05 | 1983-10-25 | Seatek | Apparatus for reducing roll and pitch motions of floating vessels |
US4458619A (en) * | 1981-03-13 | 1984-07-10 | Seatek Corporation | Apparatus for reducing roll and pitch motions of floating vessels |
EP0199145A1 (en) * | 1985-04-19 | 1986-10-29 | Hans Gerd Dipl.-Ing. Gerdsen | Hydrofoil arrangement for a hydroplane-catamaran |
GB2184408A (en) * | 1985-10-15 | 1987-06-24 | Hovermarine International Limi | Improvements in or relating to sidewall gas-cushion vehicles |
US4843991A (en) * | 1986-11-05 | 1989-07-04 | Seaglider Concept S.A. | Surface effect transport vehicle including improved lift means |
US4896621A (en) * | 1988-07-29 | 1990-01-30 | Coles Charles F | Method of modifying a boat hull to obtain enhanced lift and rough water stability |
US4951591A (en) * | 1988-07-29 | 1990-08-28 | Coles Charles F | Powered boat hull |
EP0466991A1 (en) * | 1990-07-16 | 1992-01-22 | Hydraplus | Capture-air-bubble vessel and immersed propulsion unit |
FR2716156A1 (en) * | 1994-02-11 | 1995-08-18 | Vallon Roger | Container carrying barge using air cushion lift |
US5520137A (en) * | 1993-03-12 | 1996-05-28 | Hitachi Zosen Corporation | Twin-hull boat with hydrofoils |
FR2732293A1 (en) * | 1995-03-29 | 1996-10-04 | Hydraplus | Boat propulsive system used in sea going vessels |
US5611294A (en) * | 1976-11-01 | 1997-03-18 | Paulette Renee Burg | Multihulled air cushioned marine vehicle |
WO1998041442A1 (en) * | 1997-03-14 | 1998-09-24 | Burg Donald E | Multihead air cushioned marine vehicle |
WO2001085515A1 (en) * | 2000-05-05 | 2001-11-15 | Botec Ingenieursozietät Gmbh | Ground-effect vehicle |
US6631689B2 (en) * | 1999-09-01 | 2003-10-14 | Donald E. Burg | Recycled cushion, finned, and bustled air cushion enhanced ship |
US20040112268A1 (en) * | 2002-09-12 | 2004-06-17 | Textron Inc. (a Delaware, US corporation) | Hybrid catamaran air cushion ship |
US20040154514A1 (en) * | 1999-09-01 | 2004-08-12 | Burg Donald E. | Air lubricated ship |
US20050211150A1 (en) * | 2003-09-12 | 2005-09-29 | Textron Inc. (A Delaware, Us, Corporation) | Variable hybrid catamaran air cushion ship |
US20050239351A1 (en) * | 2003-05-19 | 2005-10-27 | Darby Christopher P | Amphibious vehicle |
US20060009093A1 (en) * | 2004-06-16 | 2006-01-12 | David Murphy | Surface effect craft |
US20070151499A1 (en) * | 2005-12-07 | 2007-07-05 | Textron Inc. (A Delaware, Us, Corporation) | Marine Vessel Transfer System |
US20070151495A1 (en) * | 2005-12-30 | 2007-07-05 | Textron, Inc. (A Delaware, Us, Corporation) | Catamaran Air Cushion Ship with Folding, Retractable Seals |
US20090320737A1 (en) * | 2001-03-12 | 2009-12-31 | Coles Charles F | Powered boat hull |
AU2003274978B2 (en) * | 2002-09-12 | 2010-12-16 | Textron Innovations Inc. | Hybrid catamaran air cushion ship |
US9714020B1 (en) * | 2016-03-11 | 2017-07-25 | David Bennett, Jr. | Hovercraft assembly |
WO2020084123A1 (en) * | 2018-10-25 | 2020-04-30 | Bgvx Innovation - High Speed Vessel (Hsv) | Hull of a high-speed ship, with exhaust gas injection beneath each connecting arm |
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US1307135A (en) * | 1917-09-17 | 1919-06-17 | Christopher J Lake | Hydroplane, also applicable to hydroaeroplanes. |
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US3220501A (en) * | 1962-11-09 | 1965-11-30 | Lockheed Aircraft Corp | Ground effect machines |
US3306388A (en) * | 1963-08-23 | 1967-02-28 | Westland Aircraft Ltd | Ground effect vehicles with independent flexible stern skirt section |
US3191566A (en) * | 1964-02-21 | 1965-06-29 | Fred H Wilken | Water-borne take-off and landing craft for aircraft |
US3272270A (en) * | 1964-02-28 | 1966-09-13 | Geoffrey F Hughes | Air cushion vehicle |
US3205847A (en) * | 1964-03-23 | 1965-09-14 | Bell Aerospace Corp | Combination aquatic-ground effect vehicle |
US3251334A (en) * | 1964-04-16 | 1966-05-17 | Melville W Beardsley | Marine craft propulsion system |
US3288236A (en) * | 1965-01-05 | 1966-11-29 | Padial Guillermo Solomon | Hydro-air cushion vessels |
US3366195A (en) * | 1965-03-24 | 1968-01-30 | Douglas K. Warner | Heavy load ground effect machines |
US3354858A (en) * | 1965-04-06 | 1967-11-28 | Hovercraft Dev Ltd | Water-borne gas-cushion vehicles |
US3405675A (en) * | 1965-04-06 | 1968-10-15 | Hovercraft Dev Ltd | Water-borne gas-cushion vehicles |
US3390655A (en) * | 1967-01-17 | 1968-07-02 | Gen Dynamics Corp | Patrol craft |
US3473503A (en) * | 1968-02-07 | 1969-10-21 | Fred C Gunther | Air-supported marine vehicle |
FR2002008A1 (en) * | 1968-02-16 | 1969-10-03 | British Hovercraft Corp Ltd | IMPROVEMENTS FOR AIR-CUSHION VEHICLES |
FR2002007A1 (en) * | 1968-02-16 | 1969-10-03 | British Hovercraft Corp Ltd | |
FR2002006A1 (en) * | 1968-02-16 | 1969-10-03 | British Hovercraft Corp Ltd | |
FR2060011A1 (en) * | 1969-05-23 | 1971-06-11 | Gehlen Hermann | |
US3767141A (en) * | 1969-11-03 | 1973-10-23 | Veldhuizen J Van | Air cushion vehicle |
US3807339A (en) * | 1970-07-29 | 1974-04-30 | Vasper Thornycroft Ltd | Gas-cushion vehicle |
JPS5722493B1 (en) * | 1971-07-14 | 1982-05-13 | ||
US5611294A (en) * | 1976-11-01 | 1997-03-18 | Paulette Renee Burg | Multihulled air cushioned marine vehicle |
US4151893A (en) * | 1977-09-08 | 1979-05-01 | The United States Of America As Represented By The Secretary Of The Navy | Wing in ground effect vehicle |
US4411212A (en) * | 1979-06-05 | 1983-10-25 | Seatek | Apparatus for reducing roll and pitch motions of floating vessels |
US4458619A (en) * | 1981-03-13 | 1984-07-10 | Seatek Corporation | Apparatus for reducing roll and pitch motions of floating vessels |
EP0199145A1 (en) * | 1985-04-19 | 1986-10-29 | Hans Gerd Dipl.-Ing. Gerdsen | Hydrofoil arrangement for a hydroplane-catamaran |
GB2184408A (en) * | 1985-10-15 | 1987-06-24 | Hovermarine International Limi | Improvements in or relating to sidewall gas-cushion vehicles |
US4843991A (en) * | 1986-11-05 | 1989-07-04 | Seaglider Concept S.A. | Surface effect transport vehicle including improved lift means |
US4951591A (en) * | 1988-07-29 | 1990-08-28 | Coles Charles F | Powered boat hull |
US4896621A (en) * | 1988-07-29 | 1990-01-30 | Coles Charles F | Method of modifying a boat hull to obtain enhanced lift and rough water stability |
EP0466991A1 (en) * | 1990-07-16 | 1992-01-22 | Hydraplus | Capture-air-bubble vessel and immersed propulsion unit |
US5520137A (en) * | 1993-03-12 | 1996-05-28 | Hitachi Zosen Corporation | Twin-hull boat with hydrofoils |
FR2716156A1 (en) * | 1994-02-11 | 1995-08-18 | Vallon Roger | Container carrying barge using air cushion lift |
FR2732293A1 (en) * | 1995-03-29 | 1996-10-04 | Hydraplus | Boat propulsive system used in sea going vessels |
WO1998041442A1 (en) * | 1997-03-14 | 1998-09-24 | Burg Donald E | Multihead air cushioned marine vehicle |
US20040154514A1 (en) * | 1999-09-01 | 2004-08-12 | Burg Donald E. | Air lubricated ship |
US6631689B2 (en) * | 1999-09-01 | 2003-10-14 | Donald E. Burg | Recycled cushion, finned, and bustled air cushion enhanced ship |
WO2001085515A1 (en) * | 2000-05-05 | 2001-11-15 | Botec Ingenieursozietät Gmbh | Ground-effect vehicle |
US20090320737A1 (en) * | 2001-03-12 | 2009-12-31 | Coles Charles F | Powered boat hull |
US8201514B2 (en) * | 2001-03-12 | 2012-06-19 | Coles Charles F | Powered boat hull |
US7013826B2 (en) * | 2002-09-12 | 2006-03-21 | Textron Innovations Inc. | Hybrid catamaran air cushion ship |
AU2003274978B2 (en) * | 2002-09-12 | 2010-12-16 | Textron Innovations Inc. | Hybrid catamaran air cushion ship |
US20040112268A1 (en) * | 2002-09-12 | 2004-06-17 | Textron Inc. (a Delaware, US corporation) | Hybrid catamaran air cushion ship |
US20050239351A1 (en) * | 2003-05-19 | 2005-10-27 | Darby Christopher P | Amphibious vehicle |
US7530866B2 (en) * | 2003-05-19 | 2009-05-12 | Gibbs Technologies Limited | Amphibious vehicle |
US20050211150A1 (en) * | 2003-09-12 | 2005-09-29 | Textron Inc. (A Delaware, Us, Corporation) | Variable hybrid catamaran air cushion ship |
US7207285B2 (en) * | 2003-09-12 | 2007-04-24 | Textron Innovations Inc. | Variable hybrid catamaran air cushion ship |
US7311057B2 (en) * | 2004-06-16 | 2007-12-25 | David Murphy | Surface effect craft |
US20060009093A1 (en) * | 2004-06-16 | 2006-01-12 | David Murphy | Surface effect craft |
US7654211B2 (en) | 2005-12-07 | 2010-02-02 | Textron Inc. | Marine vessel transfer system |
US20070151499A1 (en) * | 2005-12-07 | 2007-07-05 | Textron Inc. (A Delaware, Us, Corporation) | Marine Vessel Transfer System |
US7464657B2 (en) | 2005-12-30 | 2008-12-16 | Textron Inc. | Catamaran air cushion ship with folding, retractable seals |
WO2007079345A2 (en) | 2005-12-30 | 2007-07-12 | Textron Inc. | Catamaran air cushion ship with folding, retractable seals |
US20070151495A1 (en) * | 2005-12-30 | 2007-07-05 | Textron, Inc. (A Delaware, Us, Corporation) | Catamaran Air Cushion Ship with Folding, Retractable Seals |
US9714020B1 (en) * | 2016-03-11 | 2017-07-25 | David Bennett, Jr. | Hovercraft assembly |
WO2020084123A1 (en) * | 2018-10-25 | 2020-04-30 | Bgvx Innovation - High Speed Vessel (Hsv) | Hull of a high-speed ship, with exhaust gas injection beneath each connecting arm |
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