Perturbation methods are employed to calculate time variation in the orbital elements of a compact binary system. It turns out that the semi-major axis and ecce
This text comprises a brief description and summary of THE FLIGHT OF THE BOOMERANG, in which for the first time its author, Gabriel Barceló, presented the
In this study, we use a thin rotating plate to generate propulsion and lift for a paper plate. And the thin plate rotates along the spanwise axis. We numericall
The theory of dynamic interactions suggests a new paradigm of mechanics and initiates us into a new area of knowledge, hitherto undeveloped. In this paper, we d