RU2534109C1 - Method of manufacturing charges of mixed solid rocket fuel - Google Patents

Abstract

FIELD: blasting operations.

SUBSTANCE: invention relates to methods of production of large-sized charges of mixed solid rocket fuel (MSRF) by method of free casting. The method of manufacturing a MSRF charge comprises placing the mounted with channel-forming fitments and the drainage pipe line of the housing in the altitude chamber, coupling of the drainage pipe line with the drain valve of the mixer, vacuumising of the altitude chamber and the housing and draining the fuel mass into the housing, at that for placing the housing in the altitude chamber the altitude chamber lid is removed, the drainage pipe line is mounted on it, on which from the inner side of the lid the housing is mounted assembled with the channel-forming needle, and mounted into the altitude chamber housing.

EFFECT: possibility of manufacturing the MSRF charge in thin-walled housing of free casting without mounting the housing in the altitude chamber on the stand.

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Description

The invention relates to rocket technology, and in particular to methods for manufacturing large-sized charges of mixed solid rocket fuel (SRTT) by free casting.

The prior art method for the manufacture of charges SRTT (US patent No. 3311678) by the method of free casting of the fuel mass, including the placement of the assembled with the channel-forming equipment and the drain neck of the housing, docking the drain neck with the drain valve of the mixer, evacuating the pressure chamber and draining the fuel mass into the body.

The disadvantage of the described method is the need to install the housing on a stand in the pressure chamber. For some CPTT charges attached to the case with thin walls of the case, the support of the latter on the stand is unacceptable due to possible damage to the case.

Closest to the claimed technical solution is a method (US patent No. 3562364), comprising placing assembled with the channel-forming equipment and the drain neck of the housing in the pressure chamber, docking the drain neck with the outlet valve of the mixer, evacuating the pressure chamber and the housing, draining the fuel mass into the housing.

The disadvantage of the described method is its unsuitability for the manufacture of charges SRTT with thin-walled cases, due to the need to install the case on a stand in a pressure chamber.

The objective of the present invention is to develop a method of manufacturing a charge of SRTT in a thin-walled case, providing the formation of charge by free casting without installing the case in a pressure chamber on a stand.

This problem is solved by the proposed method, which includes placing the body assembled with channel forming equipment and a drain neck in a pressure chamber, docking a drain neck with a mixer outlet valve, evacuating the pressure chamber and body, draining the fuel mass into the body, while removing the pressure chamber cover to place the body in the pressure chamber, a drain neck is installed on it, on which a body assembled with a channel-forming needle is mounted on the inside of the cover and installed in a pressure chamber housing.

The proposed method differs from the prototype in that for placing the body in the pressure chamber, the pressure chamber cover is removed, a drain neck is installed on it, on which the body assembled with the channel-forming needle is mounted on the inside of the cover and installed in the pressure chamber body. This method of mounting the housing in a pressure chamber eliminates the interaction of a thin-walled housing filled with fuel mass with a stand.

The proposed method is illustrated in the drawing, (Fig.), Which shows a housing mounted on the pressure chamber cover.

The cover of the pressure chamber 1 is hermetically fixed to the glass 2.

A drain neck 3 is fixed to the pressure chamber cover 1, to which the channel-forming needle 4 is docked. The needle 4 is fixed to the neck 5 of the rear bottom of the housing 6.

The proposed method works as follows.

A drain neck 3 is docked to the pressure chamber cover 1 in an inverted position. A channel-forming needle 4 is installed on the neck 5 of the rear bottom of the housing 6. Then, the housing 6 with the needle 4 is put on the drain neck 3 and fixed on it. Assembled with the housing 6 and the drain neck 3, the lid 1 is turned to its original position and mounted on the glass 2 pressure chamber. Connect the drain neck 3 to the mixer, vacuum the pressure chamber and the casing, open the drain valve on the mixer, fill the casing 6 with the fuel mass.

In the described manner, a CPTT charge was produced in a thin-walled casing (figure). A channel-forming needle provides charge production with a back burning end and a slotted compensator at the rear end. The fabricated charge had no violations in terms of solidity and mechanical characteristics. Fire bench tests showed a good agreement between the calculated and experimental pressure-time curves.

Currently, the proposed method is used for the manufacture of charges undergoing experimental development.

Claims (1)

A method of manufacturing a charge of mixed propellant rocket fuel (SRTT) in a thin-walled housing, including placing the housing assembled with channel forming equipment and a drain neck in a pressure chamber, docking a drain neck with a mixer outlet valve, evacuating the pressure chamber and housing, draining the fuel mass into the housing, characterized in that for placing the case in the pressure chamber remove the pressure chamber cover, install a drain neck on it, on which the body and the assembly assembled with the channel-forming needle are mounted on the inside of the cover anavlivayut the housing pressure chamber.

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