A study of the mechanics of an oscillating mechanism

Provatidis, CG

dc.contributor.author	Provatidis, CG	en
dc.date.accessioned	2014-03-01T02:01:43Z
dc.date.available	2014-03-01T02:01:43Z
dc.date.issued	2011	en
dc.identifier.issn	19984448	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29227
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-80055014841&partnerID=40&md5=198d4d3db6625f877da182528b75952f	en
dc.subject	Centrifugal force	en
dc.subject	Dean space drive	en
dc.subject	Mechanical antigravity toys	en
dc.title	A study of the mechanics of an oscillating mechanism	en
heal.type	journalArticle	en
heal.publicationDate	2011	en
heal.abstract	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 axes which are rigidly connected and driven by electric motors. The typical mechanism is based on the induced centrifugal forces and it achieves to convert rotary motion to unidirectional motion. In case of a constant angular velocity, we derived closed form analytical expressions for all mechanical quantities related to the motion of an object to which the inertial mechanism is attached. Based on these formulas, we found that although this device is not capable of achieving long-term propulsion, it can operate like a catapult thus reaching a maximum altitude. We also discuss the effect of predefined time varying angular velocity imposed by the motors, the oblique motion, the possible absence of power supply, the conservation of the linear momentum and the efficiency in the conversion process from rotary to unidirectional motion.	en
heal.journalName	International Journal of Mechanics	en
dc.identifier.volume	5	en
dc.identifier.issue	4	en
dc.identifier.spage	263	en
dc.identifier.epage	274	en