Title:
EXTREMELY LOW TEMPERATURE LIQUEFIED GAS TANK FOR SPACE SHIP
Document Type and Number:
Japanese Patent JPS5881298
Kind Code:
A
Abstract:
PURPOSE:To remarkably reduce the inflow of conduction heat, to reduce the gasification quantity of liquefied gas, and to suppress a decrease of the storage quantity by making the positions of heat insulating rods variable so as to use the minimum support structure under a gravity-free state. CONSTITUTION:When a space ship is launched, heat insulating rods 3a-3e are at the positions capable of holding a liquefied gas storage tank 1 (the same as those in the past). When the space ship enters a stationary orbit and is put in a gravity-free state, a drive motor 3 is rotated so as to move the heat insulating support rods 3a-3c to the places not contacting the tank 1 by means of the force of a pinion 9 and a rack 10 (a state shown in the figure). Accordingly, during a launching time of the space ship when a large load is applied, the structural strength similar to that in the past can be maintained, and under a gravity-free state, the heat insulating rods having become unnecessary stracturally are removed from the tank, thereby the gasification quantity of liquefied gas can be reduced, the quantity of gasified gas discharged through a relief valve 6 can be reduced, and a decrease of the storage quantity can be suppressed.
Inventors:
SHIMADA TADANORI
Application Number:
JP17794481A
Publication Date:
May 16, 1983
Filing Date:
November 06, 1981
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
F17C3/08; F17C13/08; (IPC1-7): F17C3/08
Attorney, Agent or Firm:
Shinichi Kusano