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 Title: |
US6158540:
Ground effect flying craft with simplified air cushion take-off aid
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Rice, Paul; West Richland, WA 99353
Rice, Joe; West Richland, WA 99353
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| Assignee: |
None
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| Published / Filed: |
2000-12-12
/ 1998-11-19
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| Application Number: |
US1998000196416
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| IPC Code: |
Advanced:
B60V 1/11;
B60V 1/18;
Core:
B60V 1/00;
IPC-7:
B60V 1/18;
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| U.S. Class: |
Current:
180/117;
180/126;
244/023.R;
Original:
180/117;
180/126;
244/023.R;
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| Field of Search: |
180/116,117,120,121,125,126
114/67 A
244/12.1,12.4,23 R
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| Priority Number: |
| 1998-11-19 |
US1998000196416 |
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| Abstract: |
A ground effect flying craft utilizing a pressure cavity (10) for low speed support on a static air cushion. The cavity is bounded by a streamlined aft body (18), a fore body (24), and side plates (22) which allow for low drag and high lift at cruise speed on a dynamic air cushion. Static lift pressure and dynamic thrust are provided by a fixed dual purpose propulsor (20'). Flow diverting devices or auxiliary power units are not needed for transition from static lift to dynamic flight.
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| Primary / Asst. Examiners: |
Johnson, Brian L.; Lerner, Avraham H.
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
AU CN EA EP JP
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| Family: |
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First Claim:
Show all 10 claims |
We claim:
1. A ground effect flying craft comprising a pressure cavity, a lifting and stabilizing means, and at least one power plant driving at least one propulsor, said ground effect flying craft has a fore body, an aft body, an inlet opening, a center of gravity, and right and left side plates;
- (a) said fore body has a fore body trailing edge, a fore body leading edge, a hydrodynamic step having right and left step endpoints, a fore body aft surface, and a fore body lower surface;
- (b) said aft body has an aft body leading edge, an aft body trailing edge having right and left trailing edge endpoints, an aerodynamic chord having a chord inclination angle, and an aft body lower surface;
- (c) said propulsor has a thrust line having a thrust line inclination angle, and a propulsor disk aft surface defined by the area transcribed by rotary motion of said propulsor;
- (d) said right and left side plates have right and left inner surfaces and right and left bottom edges;
- (e) said hydrodynamic step and said right and left bottom edges are adapted to be in contact with a ground effect surface when said craft is at rest,
- (f) said inlet opening has an inlet opening perimeter defined by said fore body trailing edge and said aft body leading edge in the plane of said propulsor disk aft surface,
- (g) said pressure cavity has a center of pressure,
- (h) said fore body aft surface extends from said fore body trailing edge downward and forward to said hydrodynamic step, and said fore body lower surface is shaped in the form of a planing boat hull forward and upward of said hydrodynamic step towards said fore body leading edge;
- (i) said aft body lower surface extends forward and upward from said aft body trailing edge to said aft body leading edge;
- (j) said center of pressure is located between said center of gravity and said hydrodynamic step.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 5 U.S. patent(s) that reference this one
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| Foreign References: |
None
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| Other Abstract Info: |
DERABS G2000-399875
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| Other References: |
Alexeyev, Stanislav S., "Creation of High-Speed Amphibious Boats Using Ground Proximety Effect on the Example of Server Boats", Workshop Proceedings of Ekranoplans and Very Fast Craft. Sydney (1996): pp. 134-135.
Fischer, Hanno, "Some Thoughts About The Use of Lift-off Aids as One Condition for the Economical Operation of WIG Ships", Workshop Proceedings of Ekranoplans and Very Fast Craft. Sydney (1996): pp. 60-77.
Fischer, Hanno, "RFB Research and Development in WIG Vehicles", American Institute of Aeronautics and Astronautics, Inc. (1989): pp. 364-366.
Gallington, Roger W., "Ram Wing Surface Effect Boat", Journal of Hydronautics, vol. 7, No. 3, Jul. 1973, pp. 118-123.
Greene, William J., "The Hoverplane Advanced Wingship Design from Wingship Inc.", Workshop Proceedings of Ekranoplans and Very Fast Craft. Sydney (1996): pp. 295-298.
Handler, Eugene H., "Practical Considerations Regarding Wing-In-Ground Effect Aircraft", Journal of Hydronautics, vol. 11 No. 2, Apr. 1977, pp. 35-36.
Hooker, Stephan F., "A Review of Current Technical Knowledge Necessary to Develop Large Scale Wing-In-Surface Effect Craft", American Institute of Aeronautics and Astronautics, Inc., 1989, pp. 389-391.
"When Ships Have Wings", Air and Space, Dec. 1995/Jan. 1996, pp. 52-59.
"High-Stepping Heavy Haulers", Popular Mechanics, Jun. 1995, p. 30.
"Flying on Water", Popular Science, Jan. 1997, pp. 50-54.
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