RU2655059C1 - Aerodynamic surfaces deployment mechanism - Google Patents

Abstract

FIELD: rocket engineering.

SUBSTANCE: invention relates to the field of missile engineering, namely to deployable aerodynamic surfaces, such as rudders and stabilizers, and their deployment mechanisms. Aerodynamic surfaces opening mechanism contains aerodynamic surfaces structure rotary parts, compression springs as a mechanical drive, connecting rotating on rollers central ring with pivotally connected links connecting the aerodynamic surfaces swivel parts to the central ring and turning slider shafts connected to the aerodynamic surfaces swivel parts by means of coaxial couplings.

EFFECT: claimed aerodynamic surfaces deployment mechanism ensures reliable operation by obtaining the greatest and the most smooth efforts in the most critical phases of the mechanism opening: at the beginning and at the end.

1 cl, 1 dwg

Description

The invention relates to the field of rocketry, and in particular to expandable aerodynamic surfaces, for example, rudders and stabilizers, and mechanisms for their disclosure.

The design of the aerodynamic surfaces (rudders, stabilizers and wings) of modern missiles due to the requirement for compactness, for example, when starting from a launch container, must be folding and, accordingly, disclosed.

The known mechanism of the disclosure of the steering from patent No. 524475 "Folding steering wheel guided missiles" (IPC F42B 10/14, publ. 07.27.2014. Bulletin No. 21).

The steering wheel opening mechanism includes a pusher located in the root part of the steering wheel with the possibility of its movement along the axis of the drive shaft under the action of high pressure gas, and a rotary lever.

The rotary lever kinematically connects the pusher and the rotary part of the steering wheel. The root part of the steering wheel is equipped with two stoppers of the rotary part of the steering wheel in its open position, made in the form of spring-loaded rods. The lower part of the pivot arm interacting with the pusher is made with a transverse hole. Balls and spring-loaded cylindrical clamps are placed in the hole on both sides. The latches are placed in the plane of symmetry of the root part of the steering wheel perpendicular to the axis of the drive output shaft on either side of it. The upper part of the pusher is made narrowed with a conical top, placed under the spring-loaded balls and designed to interact with the latter when the pusher moves.

The known mechanism of the disclosure of the steering wheel ensures the fixation of the folded steering wheel, which is automatically removed by the pusher at the beginning of its stroke to open the steering wheel.

However, the known steering-wheel opening mechanism is built into its design, in addition, for the simultaneous opening of several rudders, it must be hydraulic (fluid incompressibility), which reduces its reliability due to the probability of depressurization.

The closest in technical essence and the achieved result is the “wings disclosure mechanism” (see utility model certificate No. 199 of 08/10/1993, IPC F42B 10/14, published January 16, 1995 Bulletin No. 1) containing rotary and root parts of the wing structure, a tension spring as a mechanical drive, a connecting element of the mechanism into a single disclosure system, characterized in that a smooth central ring with articulated rods is used to combine the mechanism into a single disclosure system of all wings venomous rotary parts of the wings with a central ring. Moreover, tensile springs used as a mechanical drive are pivotally connected to the rods and the rocket body.

We select the specified technical solution as a prototype.

In the prototype, the use of a single wing opening system with tension springs as a mechanical drive located in the rocket body allows a significant opening moment with low weight due to the combination of several springs and the inertia of the steering parts of the rudders and the use of aerodynamic forces acting on them.

However, the disadvantages of the prototype include:

- firstly, the presence of tensile springs, which are not recommended for use in critical structures as less reliable;

- secondly, the installed rods have such kinematics that the steering wheel opening moment due to the nature of the change in shoulders (the greatest in the middle) of the rod opening forces has a lower value at the beginning and end of the opening than in its middle.

The problem to which the invention is directed is to ensure the reliability of the response of the disclosure mechanism by obtaining the greatest and unstressed efforts in the most critical phases of the disclosure of aerodynamic surfaces: at the beginning and at the end.

The task is implemented in the claimed invention as follows: in the mechanism for opening aerodynamic surfaces containing rotary parts of the structure of aerodynamic surfaces, springs as a mechanical drive, a connecting Central ring with pivotally connected elements connecting the rotary parts of the aerodynamic surfaces with a Central ring, as a mechanical drive are installed compression springs, the connecting central ring is made rotating on rollers, and in achestve connected elements set scenes, turning the slide-shafts associated with the rotary airfoils parts by coaxial couplings.

Compression springs do not have, unlike tensile springs, specially designed hooks in which large bending stresses occur during operation, which reduce the reliability of the spring.

The rotation of the central connecting ring on the rollers can significantly reduce the frictional opening moment loss.

In addition, the property of the scenes, consisting in the possibility of obtaining large gear ratios, was used.

Thus, the essence of the claimed invention consists in the use of the above structural elements, namely compression springs in a mechanical drive, rollers, wings, creating large gear ratios and, as a result, the largest and unstressed opening moment on the aerodynamic surface (output link) at the beginning and end disclosure - its most critical phases. At the same time, the combined efforts give a total effect, which ensures the reliability of the mechanism.

The claimed invention “A mechanism for opening aerodynamic surfaces” is presented in FIG. 1, includes a frame 1, a ring (synchronizer) 2, backstage 3, slider-shafts 4, rollers 5, spring blocks 6, steering wheels (stabilizers) 7.

The inventive mechanism for the disclosure of aerodynamic surfaces works as follows: after the rocket leaves the launch tube of the container, in which the rudders 7 (aerodynamic surfaces) are folded, the ring 2 (synchronizer) by spring blocks 6 rotates counterclockwise on the rollers 5 of the frame 1, turns 3 , which, in turn, clockwise are the associated slider-shafts 4 and the rotary parts of the rudders connected to them by means of coaxial couplings from the “folded” position to the “open” position.

Thus, the claimed "Mechanism for the disclosure of aerodynamic surfaces" provides a guaranteed and reliable disclosure and rudders, and stabilizers, and wings, has novelty and industrial applicability.

Claims (1)

A mechanism for opening aerodynamic surfaces, containing rotary parts of the aerodynamic surfaces structure, springs as a mechanical drive, a connecting central ring with articulated elements connecting the rotary parts of the aerodynamic surfaces with a central ring, characterized in that compression springs, a connecting central ring are installed as a mechanical drive made rotating on rollers, and backstage mounted as connected elements rachivayuschie slider-shafts associated with the rotary airfoils parts by coaxial couplings.

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