Air vehicle having strakes
First Claim
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1. An air vehicle having a gas-filled hull of a first flexible sheet, wherein a plurality of strakes extend along an exterior of the hull, each strake comprising:
- a gas-filled tube of a further flexible sheet,a rigid board, projecting outwardly from the gas-filled tube and away from the air vehicle, andan outer flexible sheet extending from one side of the gas-filled tube over the board to another side of the gas-filled tube,wherein each strake has a generally triangular cross section.
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Abstract
An air vehicle has a gas-filled hull of a flexible sheet material. Strakes extend along an exterior of the hull, each strake comprising a gas-filled tube of a sheet of a flexible sheet material. A rigid board extends outwardly from the gas-filled tube and away from the vehicle. A further sheet of a flexible sheet material extends from one side of the strake over the board to another side of the strake, to provide a strake that is generally triangular in cross section.
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Citations
18 Claims
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1. An air vehicle having a gas-filled hull of a first flexible sheet, wherein a plurality of strakes extend along an exterior of the hull, each strake comprising:
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a gas-filled tube of a further flexible sheet, a rigid board, projecting outwardly from the gas-filled tube and away from the air vehicle, and an outer flexible sheet extending from one side of the gas-filled tube over the board to another side of the gas-filled tube, wherein each strake has a generally triangular cross section. - View Dependent Claims (2, 3, 4, 5, 17)
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6. An air vehicle comprising:
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a gas-filled hull formed of a first flexible sheet, first and second strakes extending along opposite sides of an exterior of the hull, each strake comprising; an elongated gas-filled tube of a further flexible sheet adjacent the hull of the air vehicle, a rigid board abutting and projecting outwardly from the gas-filled tube and away from the hull of the air vehicle, and an outer flexible sheet extending from one side of the_elongated gas-filled tube over an edge of the rigid board to another side of the elongated gas-filled tube, thereby to define each strake as having a generally triangular cross section. - View Dependent Claims (7, 8, 9, 10, 18)
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11. An air vehicle comprising:
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a gas-filled hull formed of a first flexible sheet, first and second strakes extending along opposite sides of an exterior of the hull, each strake comprising; an elongated gas-filled tube of a further flexible sheet adjacent the hull of the air vehicle, a rigid board having first and second opposing edges, with the first edge of the rigid board disposed abutting and projecting outwardly from the gas-filled tube and away from the hull of the air vehicle, and an outer flexible sheet extending from one side of the elongated gas-filled tube over the second edge of the rigid board to another side of the elongated gas-filled tube, thereby to define each strake as having a generally triangular cross section, wherein the rigid board is in compression and the outer flexible sheet is in tension when the hull and the elongated tube are filled with gas. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification