Unidirectional motion using rotating masses along figure-eight-shaped trajectories

@article{Provatidis2015UnidirectionalMU,
  title={Unidirectional motion using rotating masses along figure-eight-shaped trajectories},
  author={Christopher G. Provatidis},
  journal={Journal of the Brazilian Society of Mechanical Sciences and Engineering},
  year={2015},
  volume={37},
  pages={397-409}
}
  • C. Provatidis
  • Published 2015
  • Physics
  • Journal of the Brazilian Society of Mechanical Sciences and Engineering
This paper revisits the notorious Dean’s drive, aiming at causing unidirectional motion when attached to an object at rest (inertial propulsion). Instead of the usual circular path along which lumped eccentric masses move, a novel figure-eight-shaped curve is proposed. It is generally shown that the rotational kinetic energy accumulated in the rotating masses produces an equivalent linear ‘initial’ velocity to the object, and therefore, it further works like an oscillating projectile within the… 
2 Citations
Inertial propulsion Part III : A note on Laithwaite ’ s engine
In this paper, using Newtonian mechanics, we show that under the assumption of small motion about the horizontal plane, the famous Laithwaite’s engine operates like an ideal harmonic oscillator. It

References

SHOWING 1-10 OF 16 REFERENCES
A study of the mechanics of an oscillating mechanism
This paper discusses aspects of the mechanics involved in the Dean-like Space Drives, which are mechanisms with two eccentric lumped masses that rotate in opposite direction about parallel linear
A Device that can Produce Net Impulse Using Rotating Masses
This paper describes a device capable of producing net impulse, through two synchronized masses, which move along a figure-eight-shaped orbit. In addition to the detailed description of the
Support forces in a synchronized rotating spring-mass system and its electromagnetic equivalent
This paper deals with the dynamic analysis for the calculation of the support forces in a rotating elastic rod when subjected to simple types of axial forces. For simplicity the model starts with a
A NOVEL MECHANISM TO PRODUCE FIGURE-EIGHT-SHAPED CLOSED CURVES IN THE THREE-DIMENSIONAL SPACE
TLDR
The concept of a novel mechanism that achieves to produce a special closed ∞ - shaped curve in the three-dimensional space, along which two or more concentrated masses continuously move, could inspire future applications.
Responding to Mechanical Antigravity
†Based on the experiences of the NASA Breakthrough Propulsion Physics Project, suggestions are offered for constructively responding to proposals that purport breakthrough propulsion using mechanical
Analysis and Experiments on the Force Capabilities of Centripetal-Force-Actuated Microrobotic Platforms
TLDR
This paper studies the capabilities of a microrobotic platform, driven by vibrating motors, to generate and impart micromanipulation forces of desired type and magnitude and designs a needle type manipulator, appropriate for force feedback applications.
Vibrational Mechanics: Nonlinear Dynamic Effects, General Approach, Applications
A review of vibrational mechanics - the developing section of nonlinear dynamics and the theory of nonlinear oscillations. It offers a general approach to the study of the effect of nonlinear
Simplified Biomechanics for a Possible Explanation of the Ancient Greek Long Jump Using Halteres
In this paper closed form analytical expressions were derived in order to simulate the possible action of "halteres" used in the ancient Greek long jump. For the sake of simplicity, elementary theory
Synchronization of two coupled exciters in a vibrating system of spatial motion
The paper proposes an analytical approach to investigate the synchronization of the two coupled exciters in a vibrating system of spatial motion. Introducing the disturbance parameters for average
Synchronisation and general dynamic symmetry of a vibrating system with two exciters rotating in opposite directions
We derive the non-dimensional coupling equation of two exciters, including inertia coupling, stiffness coupling and load coupling. The concept of general dynamic symmetry is proposed to physically
...
...