Topic
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.
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06 Jul 1992
6 citations
Patent•
30 Aug 1994TL;DR: In this article, an anode for an electrothermal arcjet thruster is described, which includes a divergent nozzle having, in tandem, a recombination portion and an expansion portion.
Abstract: There is disclosed an anode for an electrothermal arcjet thruster. The anode includes a divergent nozzle having, in tandem, a recombination portion and an expansion portion. The expansion portion has a greater rate of divergence than the recombination portion. A regeneration channel containing flowing propellent gas extends internally within the anode adjacent the recombination portion. The combination of the biangle nozzle and the regeneration channel produces an arcjet thruster having a markedly increased thrust efficiency.
6 citations
01 Jan 1998
TL;DR: In this article, a laser-spectroscopic investigation of the thermocheMical state of arcjet flows is conducted in the Aerodynamic Heating Facility (AHF) Circlet at NASA Ames Research Center.
Abstract: An laser-spectroscopic investigation of the thermocheMical state of arcjet flows is currently being conducted in the Aerodynamic Heating Facility (AHF) Circlet at NASA Ames Research Center. Downstream of the nozzle exit, but upstream of the test article, Laser-Induced Fluorescence (LIF) of atomic nitrogen is used to assess the nonequilibriuM distribution of flow enthalpy in the free stream. The two-photon LIF technique provides simultaneous measurements of free stream velocity, translational temperature, and nitrogen number density on the flow centerline. Along with information from facility instrumentation, these measurements allow a determination of the free stream total enthalpy, and its apportionment in to thermal, kinetic, and chemical mode contributions. Experimental results are presented and discussed for two different niti-ogen/argon test gas flow runs during which the current is varied while the pressure remains constant .
6 citations
30 Sep 1985
6 citations
24 Jun 2013
TL;DR: A tunable diode laser sensor was designed for in situ monitoring of temperature in the arc heater of the NASA Ames IHF arcjet facility (60 MW) as mentioned in this paper, which was used to generate light at 7772 nm and laser absorption used to monitor the population of electronically excited oxygen atoms in an air plasma flow.
Abstract: A tunable diode laser sensor was designed for in situ monitoring of temperature in the arc heater of the NASA Ames IHF arcjet facility (60 MW) An external cavity diode laser was used to generate light at 7772 nm and laser absorption used to monitor the population of electronically excited oxygen atoms in an air plasma flow Under the assumption of thermochemical equilibrium, time-resolved temperature measurements were obtained on four lines-of-sight, which enabled evaluation of the temperature uniformity in the plasma column for different arcjet operating conditions
6 citations