High-temperature-resistant tubular armored platinum resistor and application thereof

Abstract

The invention relates to a thermal control facility for a single-element thruster of a spacecraft, in particular to a high-temperature-resistant tubular armored platinum resistor and an application thereof. A platinum resistor element of the armored platinum resistor is connected with an external lead through a platinum resistor transition line, and is connected with the transition line through the point welding technology. A double-hole ceramic tube is used for protecting welding points. The platinum resistor element, the welding points and the double-hole ceramic tube are packaged in a platinum resistor protection tube with one closed end, thereby forming an element protection module. The transition line and an insulating protection material of the transition line form a transition leading-out module, and the element protection module and the transition leading-out module are packaged in a stainless steel variable-diameter armoring tube, and remain insulated with an armoring body. The transition line and an external lead wire are connected through miniature arc welding, and a connector is in insulating protection. Moreover, the connector, the tail end of the armoring tube and theexternal lead wire are sealed in a leading-out segment. The armored platinum resistor is an independent part, is convenient to install, is good in mechanical properties, and can be used for the thermal control of the attitude of the spacecraft and a rail control propulsion system.

Description

technical field [0001] The invention relates to a thermal control facility for a single-unit thruster of an aerospace vehicle, specifically a high-temperature-resistant tubular armored platinum resistance and its application. The tubular armored platinum resistance placed on the outer wall of the catalytic bed of the thruster can accurately measure The temperature of the catalytic bed of the thruster is used as the basis for remote sensing and remote control to ensure the normal operation of the satellite. Background technique [0002] The satellite thruster is a key component in the control subsystem that adjusts the orbit and flight attitude of the satellite. On the single-component catalytic decomposition thruster, it is necessary to maintain a certain starting temperature in the hydrazine decomposition chamber through thermal control to maintain the working life of the thruster, so a thermal control facility composed of special heating, temperature measurement and heat p...

AI Technical Summary

Problems solved by technology

The operating temperature of the green single-element thruster can reach 1100°C, which puts forward higher requirements for the thermal control facilities that maintain the normal operation of the thruster. The original armored thermistor can no longer meet the temperature resistance requirements of the green single-element thruster

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