Super-high-enthalpy arc heater anode

Abstract

The invention discloses a super-high-enthalpy arc heater anode. With the super-high-enthalpy arc heater anode adopted, a situation that arc heaters in the prior art cannot be used for simulating environments with super-high-enthalpy values can be avoided. The arc heater anode includes a plurality of anode terminals, an insulating ring, a cavity and a plurality of resistors; the plurality of anode terminals are fixed onto the insulating ring in a manner that the plurality of anode terminals do not contact with each other, so that the plurality of anode terminals can be mutually insulated; the cavity is taper-shaped; one large-inner diameter end of the cavity is fixedly connected with the insulating ring; the direction of an electric arc changes when the electric arc passes through the cavity the inner diameter value of which is gradually increased, and therefore, a resulting magnetic force makes plasmas flow to and concentrate at a center region of the cavity, and accelerate; one end of each resistor is electrically connected with an anode terminal, and the other end of the corresponding resistor is electrically connected with the positive pole of a power source; the root of the electric arc can be uniformly divided into a plurality of root units through adjusting the resistance values of the resistors, and the plurality of root units are attached to the plurality of anode terminals, and therefore, a uniform flow field can be generated. The super-high-enthalpy arc heater anode of the invention can be applied to simulation high-altitude thermal environments in which aerospace crafts returning from deep space exploration.

Description

technical field [0001] The invention belongs to the field of arc heaters, and in particular relates to an anode of an ultra-high enthalpy arc heater used in aerothermal ground simulation experiments. Background technique [0002] During the process of re-entering the atmosphere, the surface of the space vehicle is subjected to serious aerodynamic heating and radiation heating, which requires the vehicle to be equipped with a heat protection system. The heat-resistant material of the heat-resistant system needs to conduct aerothermal experiments on the ground to evaluate its heat-resistant performance. The aerothermal experiments are generally carried out in plasma arc wind tunnels. As a type of hypersonic wind tunnel, arc wind tunnels use arc heaters. The generated high-enthalpy gas is combined with compressed gas to simulate the high-temperature and high-pressure environment during hypersonic flight. [0003] With the development of aerothermal ground simulation technology...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an anode of an ultra-high enthalpy arc heater, which is used to solve the problem that none of the arc heaters in the prior art can be used to simulate an ultra-high enthalpy environment

Images