Comment on “Jet propulsion by microwave air plasma in the atmosphere” [AIP Adv. 10, 055002 (2020)]

Comment on “Jet propulsion by microwave air plasma in the atmosphere” [AIP Adv. 10, 055002 (2020)]

In this Comment, we analyze the performance of a microwave plasma device presented by Ye et al. [AIP Adv. 10, 055002 (2020)]. The efficiency analysis, using conservation of energy, shows that the methods used by the original authors predict up to 8000% device efficiency. Our analytical model is base...

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Main Authors: Peter L. Wright, Stephen A. Samples, Nolan M. Uchizono, Richard E. Wirz
Format: Article
Language:English
Published: AIP Publishing LLC 2020-09-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/5.0013575
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spelling doaj-3b080896eb2f4086a285d0f44a5d5d382020-11-25T03:44:57ZengAIP Publishing LLCAIP Advances2158-32262020-09-01109099101099101-410.1063/5.0013575Comment on “Jet propulsion by microwave air plasma in the atmosphere” [AIP Adv. 10, 055002 (2020)]Peter L. Wright0Stephen A. Samples1Nolan M. Uchizono2Richard E. Wirz3Mechanical and Aerospace Engineering Department, University of California, Los Angeles, California 90095, USAMechanical and Aerospace Engineering Department, University of California, Los Angeles, California 90095, USAMechanical and Aerospace Engineering Department, University of California, Los Angeles, California 90095, USAMechanical and Aerospace Engineering Department, University of California, Los Angeles, California 90095, USAIn this Comment, we analyze the performance of a microwave plasma device presented by Ye et al. [AIP Adv. 10, 055002 (2020)]. The efficiency analysis, using conservation of energy, shows that the methods used by the original authors predict up to 8000% device efficiency. Our analytical model is based on a control volume analysis of the original authors’ experimental setup and conditions, indicating that blocking the exit of the device yields stagnation pressure rather than jet pressure. The results from this analysis are consistent with the reported experimental data, demonstrating that the measured pressure using this method is internal chamber pressure and cannot be used to estimate thrust.http://dx.doi.org/10.1063/5.0013575
collection DOAJ
language English
format Article
sources DOAJ
author Peter L. Wright
Stephen A. Samples
Nolan M. Uchizono
Richard E. Wirz
spellingShingle Peter L. Wright
Stephen A. Samples
Nolan M. Uchizono
Richard E. Wirz
Comment on “Jet propulsion by microwave air plasma in the atmosphere” [AIP Adv. 10, 055002 (2020)]
AIP Advances
author_facet Peter L. Wright
Stephen A. Samples
Nolan M. Uchizono
Richard E. Wirz
author_sort Peter L. Wright
title Comment on “Jet propulsion by microwave air plasma in the atmosphere” [AIP Adv. 10, 055002 (2020)]
title_short Comment on “Jet propulsion by microwave air plasma in the atmosphere” [AIP Adv. 10, 055002 (2020)]
title_full Comment on “Jet propulsion by microwave air plasma in the atmosphere” [AIP Adv. 10, 055002 (2020)]
title_fullStr Comment on “Jet propulsion by microwave air plasma in the atmosphere” [AIP Adv. 10, 055002 (2020)]
title_full_unstemmed Comment on “Jet propulsion by microwave air plasma in the atmosphere” [AIP Adv. 10, 055002 (2020)]
title_sort comment on “jet propulsion by microwave air plasma in the atmosphere” [aip adv. 10, 055002 (2020)]
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2020-09-01
description In this Comment, we analyze the performance of a microwave plasma device presented by Ye et al. [AIP Adv. 10, 055002 (2020)]. The efficiency analysis, using conservation of energy, shows that the methods used by the original authors predict up to 8000% device efficiency. Our analytical model is based on a control volume analysis of the original authors’ experimental setup and conditions, indicating that blocking the exit of the device yields stagnation pressure rather than jet pressure. The results from this analysis are consistent with the reported experimental data, demonstrating that the measured pressure using this method is internal chamber pressure and cannot be used to estimate thrust.
url http://dx.doi.org/10.1063/5.0013575
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AT stephenasamples commentonjetpropulsionbymicrowaveairplasmaintheatmosphereaipadv100550022020
AT nolanmuchizono commentonjetpropulsionbymicrowaveairplasmaintheatmosphereaipadv100550022020
AT richardewirz commentonjetpropulsionbymicrowaveairplasmaintheatmosphereaipadv100550022020
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