Universal Journal of Mechanical Engineering Vol. 2(2), pp. 35 - 43
DOI: 10.13189/ujme.2014.020201
Reprint (PDF) (459Kb)


Design of A Propulsion Cycle for Endless Sliding on Frictional Ground Using Rotating Masses


Christopher Provatidis *
Department of Mechanical Engineering, National Technical University of Athens, Greece

ABSTRACT

This paper proposes a propulsion cycle to enable an object to perform slow unidirectional sliding on the horizontal ground when an inertial drive, made of contra-rotating eccentric masses, is attached to it. Two masses are driven by one or two synchronized motors, which rotate at a variable angular velocity according to a predefined function with a period of 360 degrees. The aforementioned predefined law of rotation constitutes the proposed propulsion cycle, which when repeatedly followed, allows for an endless forward sliding of the object. It was found that the maximum static friction between the object and the ground is the key factor that offers repeated support for the object to develop linear momentum in the beginning of every new cycle. The simulation is based on closed form analytical solutions of the ordinary differential equations for the unidirectional motion of the object to which the rotating masses are attached.

KEYWORDS
Inertial Drive, Rotation, Locomotion, Guidance, Perpetual motion

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Christopher Provatidis , "Design of A Propulsion Cycle for Endless Sliding on Frictional Ground Using Rotating Masses," Universal Journal of Mechanical Engineering, Vol. 2, No. 2, pp. 35 - 43, 2014. DOI: 10.13189/ujme.2014.020201.

(b). APA Format:
Christopher Provatidis , (2014). Design of A Propulsion Cycle for Endless Sliding on Frictional Ground Using Rotating Masses. Universal Journal of Mechanical Engineering, 2(2), 35 - 43. DOI: 10.13189/ujme.2014.020201.