The goal of this study is to describe the behavior of a helicopter during its flight through the equations of motions. Many parameters will be considered such as geometry, velocities, forces, torques or thrust. This document and the program are not definitive. They will be improved though more accurate theories and some hypothesis may probably change.
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[...] Holmgaard, Christian S. Jensen, Stefan L. Jakobsen, Martin Siegumfeldt, Autonomous Helicopter. Modelling and Control, AALBORG UNIVERSITY Frederico R. Garza, Eugene A. [...]
[...] Firstly, earth axes are still considered as inertial axes. The airplane rotation conventions are the usual righthand rule and each studied helicopter will be considered as a rigid body. The relative motion of the aircraft internal components is neglected and the mass as well as density are considered as constants. Gravity and its moments do not change with altitude. Moreover, helicopters are free to move in all directions degrees of freedom) and the thrust is assumed to act along the X body-axis and through the center of gravity. [...]
[...] This document and the program are not definitive. They will be improved though more accurate theories and some hypothesis may probably change. Introduction Helicopter simulations are very useful for companies and research labs when one wants to make dynamic analysis, study the trajectory, investigate air combat, prepare pilot training and do many other tasks. The problem is that, regarding helicopters, very few investigations have been conducted and very few accurate programs which model their behavior exist in the scientific literature. [...]