A Hypersonic Plasma Power Generator. Touryan, K., J. AIAA Journal, 1965. ![A Hypersonic Plasma Power Generator [pdf]](https://bibbase.org/img/filetypes/pdf.svg "pdf")
Paper doi abstract bibtex Theoretical and experimental analyses are presented which describe the operation and characteristics of a hypersonic plasma generator. The nose cone of a re-entry vehicle serves as a thermionic emitter of electrons (a cathode). These electrons are then conducted through the shock ionized air stream, increased in kinetic energy by collisions, and collected over the relatively cool vehicle afterbody, which is electrically insulated from the nose cone and which serves as an anode, or collector. A load connected between the cathode and anode within the vehicle completes the circuit. The generator operates basically as a plasma thermocouple and, for its power output, depends primarily on the large temperature and area differences between emitter and collector, with the kinetic energy of the plasma electrons as its energy source. Experiments in a plasma tunnel facility have yielded currents up to 30 amp/in. 2 of emitter area (pyrographite or graphite surfaces) under short-circuit and fully charge-neutralized conditions and 4.0 v open-circuit voltage and 1-ev plasma electron temperatures (16 w/in. 2 power output). Conditions for optimum output are discussed and estimates made for full-size re-entry vehicles on the basis of detailed re-entry trajectory calculations. A = A e (or Aem), A c = C = Ci = D = E = e = h = 7 = i = i m = j or J = k = I = m e , mi = n e , ni = r T T e , Tem, T c v V V T a. • E X 0 0 p
@article{
title = {A Hypersonic Plasma Power Generator},
type = {article},
year = {1965},
volume = {3},
id = {ad2d20a4-b7bf-33bd-9305-c8913b4805f1},
created = {2021-04-21T23:31:48.014Z},
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abstract = {Theoretical and experimental analyses are presented which describe the operation and characteristics of a hypersonic plasma generator. The nose cone of a re-entry vehicle serves as a thermionic emitter of electrons (a cathode). These electrons are then conducted through the shock ionized air stream, increased in kinetic energy by collisions, and collected over the relatively cool vehicle afterbody, which is electrically insulated from the nose cone and which serves as an anode, or collector. A load connected between the cathode and anode within the vehicle completes the circuit. The generator operates basically as a plasma thermocouple and, for its power output, depends primarily on the large temperature and area differences between emitter and collector, with the kinetic energy of the plasma electrons as its energy source. Experiments in a plasma tunnel facility have yielded currents up to 30 amp/in. 2 of emitter area (pyrographite or graphite surfaces) under short-circuit and fully charge-neutralized conditions and 4.0 v open-circuit voltage and 1-ev plasma electron temperatures (16 w/in. 2 power output). Conditions for optimum output are discussed and estimates made for full-size re-entry vehicles on the basis of detailed re-entry trajectory calculations. A = A e (or Aem), A c = C = Ci = D = E = e = h = 7 = i = i m = j or J = k = I = m e , mi = n e , ni = r T T e , Tem, T c v V V T a. • E X 0 0 p},
bibtype = {article},
author = {Touryan, K J},
doi = {10.2514/3.2942},
journal = {AIAA Journal},
number = {4}
}
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These electrons are then conducted through the shock ionized air stream, increased in kinetic energy by collisions, and collected over the relatively cool vehicle afterbody, which is electrically insulated from the nose cone and which serves as an anode, or collector. A load connected between the cathode and anode within the vehicle completes the circuit. The generator operates basically as a plasma thermocouple and, for its power output, depends primarily on the large temperature and area differences between emitter and collector, with the kinetic energy of the plasma electrons as its energy source. Experiments in a plasma tunnel facility have yielded currents up to 30 amp/in. 2 of emitter area (pyrographite or graphite surfaces) under short-circuit and fully charge-neutralized conditions and 4.0 v open-circuit voltage and 1-ev plasma electron temperatures (16 w/in. 2 power output). 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