Straightforward Emdrive Setup Using a Microwave Contactless Transition: First Results on Frustum Cavities

Peyre, Hugo; Sokoloff, J. B.; Pascal, Olivier; Pigaglio, Olivier; Raveu, and Nathalie

doi:10.2528/pierm20052905

Cited by 3 publications

(8 citation statements)

References 4 publications

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“…The main parts of the LAPLACE's EMDrive experimental setup, depicted in Figure 5, are extensively described in our previous papers [4][5][6]. Actually, the setup configuration is almost identical to that established in reference [6]: the cavities in Shaker configuration, positioned on the precision balance, are fed by the RF power unit through the contactless microwave transition.…”

Section: Methodsmentioning

confidence: 99%

“…like force without changing the parasitic effects [4]. Moreover, at the instant of the cavity switch, a relative force of twice the EMDrive-like force is measurable [6]. The RF power unit, feeding these cavities, is mainly composed by the microwave source which provides power up to 200 W at a frequency accurately tuned between 2.43 GHz and 2.47 GHz.…”

Section: Methodsmentioning

confidence: 99%

“…After the work described in [4] and [6] with frustum aluminium cavities, significant effort has been devoted to replicating the NASA Cavity.…”

Section: Nasa Cavity Replicationmentioning

confidence: 99%

“…For our study, at the LAPLACE Plasma and Energy Conversion Laboratory, we developed a basic setup producing almost instantaneous calibrations and results [4][5][6]. In this paper, we present how we replicated two NASA-like cavities in order to exploit the same electromagnetic configuration, or resonant mode.…”

Section: Introductionmentioning

confidence: 99%

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Straightforward Emdrive Setup With Nasa-Like Cavities

Peyre¹,

Sokoloff²,

Pascal³

et al. 2021

PIER M

Self Cite

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For replication concerns, this paper describes the work of the LAPLACE Electromagnetism Research Group to build NASA-like cavities in order to exploit the same electromagnetic configuration: the same resonant mode. These cavities are then implemented in our straightforward EMDrive experimental setup with a 0.1 mN sensitivity. Force measurement protocol is presented and discussed while more than 150 W of RF power is injected into the cavities. Results are compared to the NASA stated thrust to power ratio of 1.2 ± 0.1 mN/kW.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…After the work described in [4] and [6] with frustum aluminium cavities, significant effort has been devoted to replicating the NASA Cavity.…”

Section: Nasa Cavity Replicationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Straightforward Emdrive Setup With Nasa-Like Cavities

Peyre¹,

Sokoloff²,

Pascal³

et al. 2021

PIER M

Self Cite

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“…Due to the high weight and stiff coaxial cable from the amplifier, no force was measured for a thruster operating with 2.45 GHz, a Q factor of 3550, and a power of 140 W within their measurement resolution of 0.5 mN. Shortly afterward, an update was published by Peyre et al [25] with a contactless microwave connection and an increased Q factor of up to 18,500, where no force was measured down to 0.1 mN for a power of 150 W fed into the cavity. Recently, this test was repeated with a cavity including a dielectric insert with a Q factor of 7,000 at a power of 160 W with the same mode (TM212) as White et al [3], and again, no force was measured [26].…”

Section: Review Of Emdrive Theory and Experimentsmentioning

confidence: 99%

High-accuracy thrust measurements of the EMDrive and elimination of false-positive effects

Neunzig

Weikert

2021

CEAS Space J

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The EMDrive is a proposed propellantless propulsion concept claiming to be many orders of magnitude more efficient than classical radiation pressure forces. It is based on microwaves, which are injected into a closed tapered cavity, producing a unidirectional thrust with values of at least 1 mN/kW. This was met with high scepticism going against basic conservation laws and classical mechanics. However, several tests and theories appeared in the literature supporting this concept. Measuring a thruster with a significant thermal and mechanical load as well as high electric currents, such as those required to operate a microwave amplifier, can create numerous artefacts that produce false-positive thrust values. After many iterations, we developed an inverted counterbalanced double pendulum thrust balance, where the thruster can be mounted on a bearing below its suspension point to eliminate most thermal drift effects. In addition, the EMDrive was self-powered by a battery-pack to remove undesired interactions due to feedthroughs. We found no thrust values within a wide frequency band including several resonance frequencies and different modes. Our data limit any anomalous thrust to below the force equivalent from classical radiation for a given amount of power. This provides strong limits to all proposed theories and rules out previous test results by at least two orders of magnitude.

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Newtons vs Teslas: The Dependence of Reactionless Drive Thrust on a Stationary Magnetic Field: Part 1

Chen¹,

Cronin²

2023

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">The reactionless drive is an internal momentum engine which until recently has been deemed impossible under the laws of physics. In this paper, the authors will extend the equation for reaction less propulsion =<div id="FD1" class="formula"><math display="block" id="M1"><mi>F</mi><mo>=</mo><mo>−</mo><mi>μ</mi><msup><mi>q</mi><mn>2</mn></msup><mo stretchy="true">/</mo><mfenced close=")" open="("><mrow><mn>6</mn><mi>π</mi><mspace width="0.25em"/><mi>c</mi><mspace width="0.25em"/><mi>m</mi><mspace width="0.25em"/><msup><mi>r</mi><mn>2</mn></msup></mrow></mfenced><mfenced close=")" open="("><mrow><mi>v</mi><mo>×</mo><mfrac><mrow><mi mathvariant="normal">d</mi><mspace width="0.25em"/><mi>B</mi></mrow><mrow><mi mathvariant="normal">d</mi><mi>t</mi></mrow></mfrac><mo>+</mo><mi>B</mi><mo>×</mo><mfrac><mrow><mi mathvariant="normal">d</mi><mi>v</mi></mrow><mrow><mi mathvariant="normal">d</mi><mi>t</mi></mrow></mfrac></mrow></mfenced></math></div></div><div class="htmlview paragraph">and derive an additional equation, which we call “The Sektet Equation” governing the system of motion,<div id="FD2" class="formula"><math display="block" id="M2"><msub><mi>F</mi><mrow><mi>S</mi><mi>e</mi><mi>k</mi></mrow></msub><mo>=</mo><mo>−</mo><mi>μ</mi><msup><mi>q</mi><mn>2</mn></msup><mo stretchy="true">/</mo><mfenced close=")" open="("><mrow><mn>6</mn><mi>π</mi><mspace width="0.25em"/><mi>c</mi><mspace width="0.25em"/><mi>m</mi><mspace width="0.25em"/><msup><mi>r</mi><mn>2</mn></msup></mrow></mfenced><mo>∗</mo><mn>2</mn><mi>B</mi><mo>∗</mo><mfrac><mrow><mi mathvariant="normal">d</mi><mspace width="0.25em"/><mi>B</mi></mrow><mrow><mi mathvariant="normal">d</mi><mi>t</mi></mrow></mfrac><mtext>.</mtext></math></div></div><div class="htmlview paragraph">The results of the paper show that significant thrusts can be generated on relatively low voltages and energy inputs. It applies this equation to explain how NASA’s EM drive likely produces thrust via the “Sektet Equation” using a three circuit analysis of the Sektet Force.</div></div>

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Straightforward Emdrive Setup Using a Microwave Contactless Transition: First Results on Frustum Cavities

Cited by 3 publications

References 4 publications

Straightforward Emdrive Setup With Nasa-Like Cavities

Straightforward Emdrive Setup With Nasa-Like Cavities

High-accuracy thrust measurements of the EMDrive and elimination of false-positive effects

Newtons vs Teslas: The Dependence of Reactionless Drive Thrust on a Stationary Magnetic Field: Part 1

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