Theory

This page will outline some candidate theories of operation (or non-operation).

Proponent Theories

• Guido Fetta's, Cannae Drive creator's Theory
• Roger Shawyer's, EM Drive creator's theory
• Quantum foam MHD
• Harold White's Quantum vacuum plasma thruster (QVP thruster)
• Harold White's Warp effects
• Evanescent waves
• Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules
• @notsosureofit Hypothesis
• Mike McCulloch's MiHsC Theory
• Curving Rf beams - The magnitude of the bending needed, was not shown by the thermal camera images taken at Eagleworks.

Debunking Theories

These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.

Back-of-the-envelope "Kinetic Energy Debunk"

Given:

[math]f=ma[/math]

and

[math] e=\cfrac{1}{2}mv^2 [/math]

then

[math]a=\cfrac{f}{m}[/math]

So if this device can produce a constant force then it will produce a constant acceleration.

BUT!... because Kinetic Energy is proportional to the SQUARE of velocity, and the energy being put in is constant, then at some time the attained velocity will mean there is more kinetic energy in the device than has been put in to the device. Yay, free energy!

Exact Solution of Maxwell's Equations

On 8/5/14, Greg Egan obtained an exact solution for the resonant modes (having azimuthal quantum number m=0, constant electromagnetic field variation in the azimuthal direction) of a cavity in the shape of a truncated cone with spherical ends. He calculated the forces and showed a proof that the net force is zero and therefore that there is no thrust force in a resonant electromagnetic cavity of any arbitrary shape, and for any arbitrary mode shape, when the cavity is analyzed according to the standing wave solution of Maxwell's equations.

Experimental Error

• It's all a hoax/conspiracy
• Simple measuring error
• Thermal effects
• Mechanical vibration
• Magnetic effects with environment

These are discussed in more detail at Possible Error Sources.