Rocket propulsion unit with separation of inner and outer casing and method of making same
AssigneeAstrium GmbH
InventorHerbert Linner
Life of this patent
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Abstract
A rocket propulsion unit with an outer casing and an inner casing is described whereby the inner casing is arranged with space between the outer casing, and the inner casing forms a combustion chamber and has a contour adapted to the expulsion of propellants out of the combustion chamber with a constriction for forming a combustion chamber neck. The outer casing in contrast has a contour deviating from the contour of the inner casing.
Claims24
Rocket propulsion unit with an outer casing and an inner casing, whereby the inner casing is arranged with a space between the outer casing and inner casing, and the inner casing forms a combustion chamber, and has a contour adapted for expulsion of propellants from the combustion chamber with a constriction to form a combustion chamber neck, wherein the outer casing has a contour deviating from the contour of the inner casing, wherein said outer casing includes a tubular substantially cylindrical section and expanding conical section at an end of the outer casing adjacent a propellant exhaust opening, and wherein said inner casing extends with a continuously increasing spacing from the outer casing in a downstream direction from an injector region up to said constriction forming the combustion chamber neck.
A method of making a rocket propulsion unit comprising:
- forming an outer casing with an internal surface contour,
- forming an inner casing with an external surface contour which is different than the internal surface contour of the outer casings, said inner casing forming a rocket combustion chamber having a constriction forming a combustion chamber neck, and
- attaching the inner casing to the outer casing with a varying spacing along a length of the casings between the internal surface contour of the outer casing and the external surface contour of the inner casing,
- wherein said outer casing includes a tubular substantially cylindrical section and expanding conical section at an end of the outer casing adjacent a propellant exhaust opening, and
- wherein said inner casing extends with a continuously increasing spacing from the outer casing in a downstream direction from an injector region up to said constriction forming the combustion chamber neck.
Dependencies are inferred from the claim text.