Analysis of a microwave-heated planar propagating hydrogen plasma

Journal Article · Mon Feb 01 00:00:00 EST 1988 · AIAA J.; (United States)

DOI:https://doi.org/10.2514/3.9871· OSTI ID:6925876

Knecht, J P; Micci, M M

The heating of a gas to high temperatures by absorption of microwave radiation has been proposed as a potential electrothermal rocket propulsion system. One possible mode of microwave energy absorption is by means of a planar plasma region propagating toward the source of the microwave radiation. Such a planar propagating plasma can be spatially stabilized by a gas stream flowing in the same direction as the microwave radiation with a velocity equal to the plasma propagation velocity. A one-dimensional analysis of the microwave-heated planar propagating plasma for hydrogen gas was developed to predict maximum gas temperatures and propagation velocities. The governing electromagnetic and energy equations were numerically integrated with temperature-dependent thermodynamic properties of equilibrium hydrogen. The propagation velocity eigenvalue was solved by means of an iterative technique. Temperature distribution in the gas, propagation velocities, and percent power absorbed, reflected and transmitted, were obtained as a function of incident microwave power at a frequency of 2.45 GHza for hydrogen gas pressures of 1 and 10 atm. 19 references.

• Research Organization: Pennsylvania State Univ., University Park (USA)
• OSTI ID: 6925876
• Journal Information: AIAA J.; (United States), Vol. 26
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ROCKETS
PROPULSION SYSTEMS
HYDROGEN
ITERATIVE METHODS
MICROWAVE RADIATION
PLASMA
PLASMA HEATING
ROCKET ENGINES
TEMPERATURE DISTRIBUTION
WAVE PROPAGATION
ELECTROMAGNETIC RADIATION
ELEMENTS
ENGINES
HEATING
NONMETALS
RADIATIONS
420200* - Engineering- Facilities
Equipment
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