Preprint Article Version 1 This version is not peer-reviewed

The Energetics of the an ExB Propulsor That Avoids the Hidden Momentum Pitfall

Version 1 : Received: 25 November 2019 / Approved: 28 November 2019 / Online: 28 November 2019 (09:31:46 CET)

How to cite: Cornwall, R. The Energetics of the an ExB Propulsor That Avoids the Hidden Momentum Pitfall. Preprints 2019, 2019110355 (doi: 10.20944/preprints201911.0355.v1). Cornwall, R. The Energetics of the an ExB Propulsor That Avoids the Hidden Momentum Pitfall. Preprints 2019, 2019110355 (doi: 10.20944/preprints201911.0355.v1).

Abstract

This paper updates earlier thoughts by the author on a putative electromagnetic propulsion system, to perform a more detailed energy balance. The previous paper demonstrated how momentum could be dumped to the ground state of the electromagnetic field but a claim was left somewhat hanging at the end of the previous paper, that the work done in changing the craft's velocity would effectively shift the centre of mass of the field - although that would be an infinitesimal shift in practice. The craft must always supply work to change velocity, such as by an accelerate/de-accelerate cycle and superficially this looks to violate the conservation of energy; we prove that this isn't so.

Subject Areas

momenergy; static Poynting vector flow; zeropoint; ion propulsion

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