The dynamic stability and equilibrium conditions of a parachute are studied using a six degree of freedom dynamic model that includes apparent inertia effects. Existing parachute dynamic models are discussed and the selection of a relevant model is shown. The chosen dynamic model that incorporates apparent inertia is summarized and used for analysis. The moments on the parachute system caused b...

In this paper we propose a new perspective for explaining galaxy rotation curves. We conjecture that there is gravitational moment of inertia which, together with mass, contributes to the potential. substantiate formula potential created by inertia. validate our model computing orbital velocities several galaxies and showing computed correspond observed ones. Our proposed approach capable accou...

We study thickness-shear and thickness-twist vibrations of a finite, monolithic, AT-cut quartz plate crystal filter with two pairs of electrodes. The equations of anisotropic elasticity are used with the omission of the small elastic constant c(56). An analytical solution is obtained using Fourier series from which the resonant frequencies, mode shapes, and the vibration confinement due to the ...

In the present article, we introduce a model to investigate the energy spectrum of a relativistic rotor by considering the Klein-Gordon Hamiltonian. Rotational spectral lines are a signature of homonuclear and heteronuclear systems and play a key role in understanding diatomic molecules. We show that the energy-correction term arising due to unequal masses influences the line separation. Determ...

This article describes an efŽ cient recursive algorithm for the computation of the operational space inertia matrix of an n-link branching robotic mechanism with multiple .m/ operational points. The proposed algorithm achieves the complexity of O.nm Cm3/. Sincem can be considered as a small constant in practice, as the number of links increases, this algorithm performs signiŽ cantly better than...

Abstract We examine Sciama’s inertia theory; we conclude that Berman(2006), while considering the Machian conjecture that the Universe is endowed with zero-total energy, is equivalent to Sciama’s approach. We determine the numerical value of a constant which appears in the Machian inertial force expression devised by Graneau and Graneau[2]. We point out that this formula may be not restricted t...

Abstract: Placing a satellite or any other spacecraft in orbit is a risky and expensive process; years of research and a lot of money are transformed into equipments that will be beyond any possibility of maintenance in case something goes wrong. Therefore, space projects must be carried on as carefully as possible in order to guarantee that satellite equipments perform its mission properly. In...

The dynamics of two symmetrically coupled populations of rotators is studied for different values of the inertia. The system is characterized by different types of solutions, which all coexist with the fully synchronized state. At small inertia, the system is no more chaotic and one observes mainly quasi-periodic chimeras, while the usual (stationary) chimera state is not anymore observable. At...

A simulated space manipulator is designed to verify the reliability of the zero-gravity simulation system, which can avoid the risks of experiments involving the space manipulator in this zero-gravity ground system. To achieve similarity between the simulated and actual space manipulators, the mass, barycenter, and inertia must be considered. In this study, a counterweight component is designed...