RU2647269C1 - Flange of the rotating nozzle of rocket engine body from composite materials - Google Patents

Abstract

FIELD: rocketry.

SUBSTANCE: invention relates to rocket construction and can be used in design of rocket engine construction for various purposes. Flange of a rotary nozzle comprises a conical body with a recessed in the engine portion with a supporting surface on the elastic hinge under conditions of application on one side and a connecting frame for the frame of the rotary nozzle on the other, and also a power support belt between them, having connecting holes for connection to the engine flange, structurally separating the recessed portion of the conical body. Recessed portion of the conical body has an additional power shell, preferably made of unidirectional composite material. Power shell is directly installed on the recessed part of the conical body with an abutment on the power support belt and with a pinch on it and has, with the recessed portion of the conical body, a common support surface on the elastic hinge. Power support belt is made of a composite material with ribbing on the side opposite to the engine flange, with formation of niches for placing fastening or metal elements to it.

EFFECT: invention makes it possible to provide compactability and rigidity of the structure.

1 cl, 3 dwg

Description

The invention relates to the field of rocket science and can be used to create designs of rocket engines for various purposes.

The flange is a fixed bearing element in the composition of the rotary nozzle with a rigid fastening on the engine flange, and in all realized structures it was made of metal (I.Kh. Fakhrutdinov, A.V. Kotelnikov "Design and design of solid fuel rocket engines. Moscow. Mechanical engineering. 1987, p. 228-229).

All movable and fixed components of the rotary nozzle are fixed on the flange: frame, bell body, elastic hinge and its support rigidly connected to the bell body.

Of all this composition for the first time from composite materials was proposed and subsequently experimentally tested with a positive result, the frame design, US Pat. RU No. 2551467 C1 IPC F02K 9/84, and earlier the design of the body of the bell US Pat. RU No. 2539236 C1 IPC F02K 9/97 (2006.01).

That is, the fundamental possibility of manufacturing the components of a rotary nozzle from composite materials was shown.

Attempts were also made to create a flange of the rotary nozzle - the most loaded part of it - from composite materials (US Pat. RU No. 2434160 C1 IPC F02K 9/97 (2006.01), which is adopted in this case as a prototype.

In this source of information, the flange is made in the form of a conical body with frames along the edges and a power support belt between them, connected together by a mesh shell with annular and oblique ribs, and a sealing shell is located on top of the mesh shell in the recessed area in the engine.

But such technical solutions are mostly applicable in products having some extent, for example, according to US Pat. RU No. 2384460 C2 IPC B64C 1/00 (2006.01) or No. 2442690 C1 IPC B32B 1/08 (2006.01), which are mesh shells of intersecting ribs with an outer skin. The recessed part of the flange according to the prototype was also made according to the same principle. In reality, the flange of the rotary nozzle should have a compact high-strength design with rather limited dimensions and also meet the tightness requirements at high external pressures and high axial forces.

The objective of the present invention is the creation of the design of the flange of the rotary nozzle that meets the requirements of high load and tightness in use and manufacturability.

The essential features of the flange design to achieve this goal are:

- the implementation of the recessed part of the conical housing of the flange with an additional power shell mainly of unidirectional composite material with the installation directly on it with emphasis in the power support belt with pinching on it;

- implementation of the supporting surface of the elastic hinge surface of the additional power shell common with the supporting surface of the recessed part of the conical body;

- the implementation of the power support belt of composite material with ribbing on the side opposite to the engine flange, with the formation of niches for placement of fastening elements to it or metal.

The proposed design of the flange of the rotary nozzle made of composite materials is illustrated by drawings.

In FIG. 1 shows a diagram of the constructive interaction of the flange as part of a rotary nozzle; in FIG. 2 and 3 - structural design of the flange itself with a support belt made of composite materials or metal, respectively.

The flange 1 of the rotary nozzle (Fig. 1) is the supporting structure for all elements of the rotary nozzle. All movable and fixed components are fixed on it: the nozzle 2 itself with an elastic hinge 3 and its support 4, frame 5. And the whole set is installed on the flange 6 of the engine 7.

The flange 1 itself (Fig. 1) structurally contains a conical body 8 (Fig. 2) with a recessed part 9 in the engine 7 with a supporting surface 10 on an elastic hinge 3 under conditions of use on the one hand and a connecting frame 11 for the frame 5 of the nozzle 2 itself another and a power support belt 12 between them with connecting holes 13 to the flange 6 of the engine 7.

The support belt 12 structurally separates the recessed part 9 of the conical body 8, which in this proposal is made with an additional power shell 14 mainly of unidirectional composite material, is directly mounted on it with an emphasis in the power support belt 12, has a common supporting surface 10 on it with an elastic hinge 3 in the conditions of use.

The power support belt 12 is also made of composite materials (Fig. 2) with landing on a conical housing 8 in an appropriate place and with a ribbing 15 from the side opposite to the flange 6 of the engine 7, with the formation of niches 16 for accommodating fastening elements to it or metal (Fig. . 3).

This embodiment of the design of the flange of the rotary nozzle provides the perception of axial and radial loads arising from gas pressure during engine operation.

This invention is adopted for implementation: it developed drawings for an experimental sample, calculations were carried out confirming its strength while maintaining integrity at operating pressure in the combustion chamber of the engine.

Claims (1)

A composite engine rotary nozzle flange comprising a conical housing with a recessed part in the engine with a supporting surface on an elastic hinge for use on the one hand and a connecting frame for the rotary nozzle frame on the other and a power support belt between them with connecting holes to the engine flange structurally separating the recessed part of the conical body, characterized in that in it the recessed part of the conical body is made with additional forces th shell mainly of unidirectional composite material directly mounted on it with emphasis in the power support belt, with pinching on it and has a common supporting surface with it on an elastic hinge, and the power support belt is also made of composite material with ribbing on the side opposite to the flange engine, with the formation of niches for placement of fasteners to it or metal.

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