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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:31 |
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Conference: Bucharest University Faculty of Physics 2018 Meeting
Section: Physics Education
Title:
Dynamics of the pulsejet engine in vertical motion with application to jetting
paralarvae
Authors:
Mircea Dolineanu, Tiberius O. Cheche
Affiliation:
University of Bucharest, Faculty of Physics
E-mail
tiberiuscheche@yahoo.com
Keywords:
pulsejet equipped systems, jetting paralarvae
Abstract:
A simple mechanical model for the vertical motion with linear drag of a pulsejet equipped system (PES) in gravitational field is proposed. The lift force is neglected and the fluid is expelled with constant speed into the opposite direction of the PES motion. The thrust is explained by the linear momentum conservation law applied to the intake/exhaust processes assumed as instantaneous and periodic. The characteristics of the dynamics as function of pulse duration are discussed. The model is applied to small size cephalopods swimming in sea water in vertical direction.
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