Abstract: A method of producing accelerations without ejecting any material exhaust which relies on inducing mass fluctuations in conventional electrical circuit components and combining them with a mechanically coupled periodic thrust to produce propulsive forces without the ejection of any propellant. Ferroelectric force transducers, in particular, piezoelectric transducers, are driven by at least two phase-locked voltage waveforms so that the rest mass fluctuation and mechanical excursion needed to produce a stationary thrust are both produced in the transducer itself. Parametric amplification is used to achieve high amplitude, correctly phase-locked voltages of correct frequencies to activate the transducer by the simple addition of a DC voltage to the AC voltage of a single frequency driving signal. The driving voltage waveforms may be pulsed to maximize the thrust and reduce the duty cycle of the active components of the system.

Abstract: This invention is a method for producing transient fluctuations in the inertial masses of material objects employing an effect that is a consequence of relativistic theories of gravitation. An extension of this method wherein pulsed thrust is applied sychronously with the mass fluctuations produced by the method to an object makes it possible to cause stationary changes in the object's apparent mass and weight and also to facilitate the transport of massive objects.