RU153012U1 - DEVICE FOR RACFIXING COMPARTMENTS OF Aircraft - Google Patents

Abstract

A device for fixing the compartments of an aircraft, comprising a main compartment, a push-away compartment, a housing fixed to the main compartment, a squib, a sliding lock and a sliding piston supporting it, a bolt connecting the main and push-away compartments, a sliding lock made in the form of, for example, cut into three independent segments of the retaining ring, a bolt is made in the groove in which the segments are placed, the segments are held in the bolt groove by a sliding piston located in the housing, and the bolt is held INDICATES segments shifted out in the housing through the piston, characterized in that the housing has two seating surfaces for the shifted piston disposed on opposite sides of the channel for supplying the powder gases from the cutter, thus in the mounting surface for the shifted smaller diameter of the piston has a piston seal for the shifted.

Description

The utility model relates to aviation and rocket technology, to the designs of the fuselages (hulls) having unlockable compartments (steps).

Known unit for separating the compartments of the aircraft RU No. 2528473 C2, adopted for the prototype, containing the main compartment, the repelled compartment, a housing mounted on the main compartment, a squib, a sliding retainer, made in the form of cut, for example, into three independent segments of the retaining ring, and supporting its movable piston, a bolt connecting the main and repelled compartments, a groove is made on the bolt in which the segments are placed, the segments are held in the bolt groove by the movable piston located in the housing, and the bol t is held by segments in the housing through a movable piston.

Common features with the proposed technical solution is the presence of a main compartment, a repelled compartment, a housing fixed to the main compartment, a squib, a retractable retainer, made in the form of cut, for example, into three independent segments of the retaining ring, and a sliding piston supporting it, a bolt connecting the main and repelled compartments, a bolt is made in the bolt in which the segments are placed, the segments are held in the bolt groove by a movable piston located in the housing, and the bolt holds segments in the housing through a movable piston.

The disadvantages of this node are:

- location of the seals - one seal is located on the movable piston, and the other in the body of the assembly (seal pair housing - bolt). Such a placement of seals leads to the fact that after the igniter is triggered and the bolt leaves the unit body, the powder gases from the igniter under high pressure exit the compartment body, and a vibration shock occurs as a result of the gas-dynamic effect of the powder gases on the compartment body;

- due to the small length of the seating surface of the movable piston and the housing of the assembly, jamming of the movable piston in the housing of the assembly is possible when the igniter is triggered.

The proposed utility model solves the problem of reducing the level of vibration after triggering the squib and increasing the reliability of the device by introducing an additional seating surface of the shifted piston and the device body. The task of reducing the level of vibration shock is solved by introducing an additional seal in the device housing in the zone of the powder gas supply channel from the squib, thus eliminating the exit of powder gases from the squib from the compartment body. The surface for accommodating this seal is at the same time an additional seating surface of the movable piston and the device body, thereby solving the problem of increasing the reliability of the device.

Distinctive features of the proposed device from the prototype is that the housing has two seating surfaces for the movable piston located on opposite sides of the powder gas supply channel from the squib, while there is a seal for the movable piston in the seating surface for the smaller diameter of the movable piston.

Due to the presence of these distinctive features in conjunction with the known, the following technical result is achieved - the problem of reducing the level of vibration after the activation of the squib and increasing the reliability of the device is solved.

The proposed technical solution can find application in aerospace technology for unmanned aerial vehicles with booster and detachable compartments and multi-stage missiles.

The device for unlocking aircraft compartments is shown in FIG. one

Presented in FIG. 1 device comprises a housing 1, mounted on the main compartment 2, a squib 3, a movable piston 4, a bolt 5, a push-away compartment 6, segments 7, a nut 8 with an external cone fixing 9, a spring 10, a cover 11 with an internal cone fixing 12, a seating surface 13 of the housing 1 for a smaller diameter of the movable piston 4 and the seal 14 for the movable piston 4.

The device operates as follows.

When docked compartments 2 and 6, the bolt 5 is held in the housing 1 by segments 7, closed by a sliding piston 4.

The bolt 5 is screwed into the repelled compartment 6 when the cover 11, spring 10 and nut 8 are removed. The spring 10 abuts against the nut 8 screwed into the movable piston 4 and does not allow the movable piston 4 to move.

The axial force from the repelled compartment 6 in the docked state is transmitted through the bolt 5 and segments 7 to the housing 1 and through it to the main compartment 2.

When the squib 3 is triggered, the powder gases enter the cavity between the housing 1, the piston 4 being moved, and the seating surface 13 with the seal 14. Under the influence of the powder gases, the piston 4 together with the nut 8 moves, freeing the segments 7 and compressing the spring 10, the cone fixing 9 on the nut 8 jammed on the cone fixing 12 on the cover 11.

Segments 7 release bolt 5. Special devices repel compartment 6, bolt 5 exits housing 1 and the compartments are unlocked. In this case, the seal 14 blocks the exit of the powder gases from the squib from the compartment body.

Claims (1)

A device for unlocking the compartments of an aircraft, comprising a main compartment, a push-away compartment, a housing fixed to the main compartment, a squib, a retractable lock and a sliding piston supporting it, a bolt connecting the main and push-away compartments, a extendable lock made in the form of, for example, cut into three independent segments of the retaining ring, a bolt is made in the groove in which the segments are placed, the segments are held in the bolt groove by a sliding piston located in the housing, and the bolt is held INDICATES segments shifted out in the housing through the piston, characterized in that the housing has two seating surfaces for the shifted piston disposed on opposite sides of the channel for supplying the powder gases from the cutter, thus in the mounting surface for the shifted smaller diameter of the piston has a piston seal for the shifted.

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