JPH01244999A - Fitting device for space pressure vessel - Google Patents

Abstract

PURPOSE:To reduce the weight of the above device by providing an expansible vessel body, the interior of which is pressurized, and a pair of fitting body structures disposed in such a manner as to clamp to vessel body, whereby the above vessel body is held by frictional force with the fitting body structures produced by expansion of the vessel body. CONSTITUTION:A pair of fitting body structures 14a, 14b are disposed at the substantially central portion of a vessel body 10 in such a manner as to clamp the vessel body. The fitting body structures 14a, 14b are formed in such a manner that the distance L therebetween is substantially equal to the diameter D in the non-pressurizing state of the vessel body. When the vessel body 10 is pressurized, the vessel body 10 is pressed by the body structures. By this arrangement, the vessel body 10 is held in the state of being clamped between the fitting body structures 14a, 14b by the frictional force corresponding to the above pressing force. Accordingly, the need of providing fitting means on the vessel body 10 can be eliminated so as to reduce the weight of the above device as much as possible. The manufacturing and assembling work can be simplified.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is directed to, for example, providing a pressure vessel such as a propellant vessel of a secondary propulsion system rocket engine to a space vehicle such as an artificial satellite. The installation of space pressure vessels used to carry equipment is concerned.

(Prior art) Conventionally, space pressure vessels have been mounted using the radial tab method as shown in Fig. 2, the axial tab method as shown in Fig. 3, and the polar mount method as shown in Fig. 4. Various methods were adopted.

In the asial tab system shown in Fig. 2, a pressurized gas supply pipe 2 connected to a pressurized gas supply source (not shown) such as a helium gas supply source is connected to one end of a container body 1 formed of a metal material such as a titanium alloy into a substantially spherical shape. A propellant discharge pipe 3 connected to a rocket engine (not shown) is connected to the other end.

A plurality of fittings 4a called tabs are arranged at predetermined intervals approximately in the middle of the container body 1, and the fittings 4a are screwed onto the structure 5a via screws or the like. Installed. .

Similarly, in the open and seal tab system shown in FIG. 3, a pressurized gas supply pipe 2 and a propellant discharge pipe 3 are connected to both ends of the container body 1. Approximately in the middle of the container body 1, mounting tools 4b called elastic tabs are arranged at predetermined intervals. worn and installed.

In the polar mount system shown in FIG. 4, a pressurized gas supply pipe 2 and a propellant discharge pipe 3 are connected to both ends of the container body 1 at approximately the middle portion via a connecting member 6, and these pressurized gas supply pipe 2 and propellant The discharge pipe 3 is attached to the structure 5c using a fitting 4c called a bracket.

However, regardless of which method the space pressure vessel is mounted on, the space pressure vessel is mounted using tools 4a and 4b.

Due to the structure that requires the use of 4C, its weight increases, resulting in an increase in the weight of the spacecraft, and the production and assembly work is complicated.

(Problems to be Solved by the Invention) As stated above, conventional space pressure vessel mounting devices are unsuitable for application to spacecraft due to their heavy weight, and they are difficult to manufacture and install. The problem was that it was complicated.

This invention has been made in view of the above circumstances, and provides a space pressure vessel mounting device that can be made into component parts to reduce weight and simplify manufacturing and assembly work. The purpose is to

[Structure of the Invention] (Means for Solving the Problems) An apparatus for mounting a space pressure vessel according to the present invention includes a telescopic container body whose inside is pressurized, and an arrangement for sandwiching the container body. The pair of attachments provided includes a structure, and the attachment is configured to be held by frictional force with the structure as the container body expands.

(Function) According to the above configuration, the container body can be mounted on the container body without the need for a conventional mounting tool.
Its configuration is simplified. As a result, it is possible to reduce the weight of the container body, and to improve the manufacturing and assembly workability.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

Figure 1 shows a space pressure vessel installation device according to an embodiment of the present invention, which is applied, for example, to a pressure vessel that supplies propellant to a rocket engine of a secondary propulsion system of a spacecraft. I will explain this as a representative case.

That is, in the figure, 10 is a container body formed into a substantially spherical shape from a metal material such as a titanium alloy, and a propellant 11 such as hydrazine is accommodated inside the container body. A pressurized gas supply pipe 12 is connected to one end of the container body 10, which is connected to a pressurized gas supply source (not shown) such as a hemi-woom gas supply source, and the other end is connected to a rocket engine (not shown). A propellant discharge pipe 13 is connected thereto. A pair of structures 14a are mounted approximately in the center of this container body 10.

14b is sandwiched. This attachment is to the structure 14a.

14b are formed so that the distance between them is approximately the same as the diameter of the container body 10 in the non-pressurized state, and the diameter of the container body 10 is
When the container body 1o is pressurized, the container body 1o is pressed against the container body 1o. Thereby, the container main body 10 is held in a state where it is mounted and sandwiched between the structures 14a and 14b by a frictional force corresponding to the pressing force F.

In this way, the space pressure vessel is attached to the pair of structures 14a and 14 so that the apparatus is sandwiched between the vessel body 10.
・B is provided, and the installation is brought into pressure contact with the structures 14a and 14b by the expansion force accompanying pressurization of the container body 1o, and the container body 1o is held by the frictional force, so that the conventional installation is not possible. Place the ingredients 4a, 4b, 4C in the container body 1.
Since there is no need to provide a
It can contribute to improving the weight reduction of spacecraft.

Further, according to this, since the installation does not require the use of tools, it is possible to simplify the manufacturing and assembly work.

In addition, in the above embodiment, the case is explained in which the application is applied to a pressure vessel containing the propellant 11 of a secondary propulsion system rocket engine, but the application is not limited to this, and for example, it can also be applied to a pressure vessel of a Ni-H2 battery cell, etc. It can be applied and almost the same effect is expected. Therefore, it goes without saying that the present invention is not limited to the above embodiments, and that various modifications can be made without departing from the spirit of the invention.

[Effects of the Invention] As detailed above, the present invention provides a space pressure vessel installation that has a simple structure, is lightweight, and simplifies manufacturing and assembly work. can provide the equipment.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an installation device for a space pressure vessel according to an embodiment of the present invention, and FIGS.
Each of the figures is a diagram for explaining the installation of a conventional space pressure vessel. DESCRIPTION OF SYMBOLS 10... Container main body, 11... Propellant, 12... Pressurized gas supply pipe, 13... Propellant discharge pipe, 14a, 14
b...Installation is on the structure. Applicant's representative Patent attorney Takehiko Suzue 12... Pressurized gas supply pipe Figure 1 Figure 2

Claims (1)

[Claims] The container body is provided with a telescopic container body whose inside is pressurized and a pair of mounting structures disposed to sandwich the container body, and the container body is moved by the frictional force between the container body and the mounting structures as the container body expands. A mounting device for a space pressure vessel, characterized in that the space pressure vessel is configured to hold the space pressure vessel.