Arcjet rocket

About: Arcjet rocket is a research topic. Over the lifetime, 1121 publications have been published within this topic receiving 9687 citations. The topic is also known as: Arcjet.

High vacuum facility for hydrazine thruster testing

Abstract: An ongoing modification is described of a large vacuum chamber to accommodate the ignition of an arcjet hydrazine thruster while maintaining a vacuum level of 1 x 10(exp -5) torr or less The vacuum facility consists of a 20 ft stainless steel vacuum tank with an internal LN2 shroud, four 35 in cryopumps and an 8 in turbopump To maintain a vacuum level of 1 x 10(exp -5) torr or less, 900 sq ft of liquid helium (LHe) shroud surface was installed to maintain the vacuum level and pumping requirements A vacuum level of 1 x 10(exp -5) torr or less will allow the hydrazine thrust to exit the thruster nozzle and radiate into a space type environment so that the plume flow field can be analyzed and compared to the analytical model density distribution profile Some other arcjet thruster characteristics measured are the electromagnetic interference (EMI) and exhaust contamination This data is used to evaluate if the arcjet thruster with its high specific impulse in comparison to current chemical propulsion thruster can be used for the next generation of communication satellites

Spectroscopic diagnostisc on supersonic nozzle flow of nonequilibrium arc plasma: I. Argon arcjet

Abstract: It is well known that arc plasma is one of the main tools for the ground simulation of the reentry environment, so its experimental diagnosis is very important. We have established a set of arc plasmasupersonic nozzle flow device with high stability and running continuously. The stability of spectralintensity for supersonic arc-jet is 1'—1 .5%. On the basis of the device we have made a spectroscopicdiagnostic investigation on the supersonic nozzle flow of non-equilibrium arc plasma for argon arc-jetand obtained the rich experimental diagnostic results about supersonic arc-jet. The experiment resultsshow that the electron temperature of supersonic arc-jet changes non-monotonically, and it decreases in a range and increases in the next range periodically along with the flow direction. The establisheddevice and diagnostic method on supersonic flow of arc plasma has a very wide application in the research on non-equilibrium flow mechanism of high temperature gases. Key words: Plasma, Spectroscopics, Supersonicflow, Aerodynamics1. IntroductionIt is of great significance in the development of space engineering that the non-equilibrium