Effects on the Rotation of a Body Containing a Freely Moving Mass Along an Axis

In this study, a wing system in three different coordinates, x, y and z, was established. The main purpose of this study was to investigate the possibility of increasing rotation of a vehicle in order to escape some dangerous conditions in a short time interval. The angular velocities of masses on the three coordinate axes were examined and the effect of their position on the angular velocity was investigated. The aim was to determine how the angular velocity is increased or decreased and if this occurs immediately by changing the location of the masses. Ultimately, the investigation of changing angular velocity instantaneously to prevent dangerous accidents was targeted by sudden rotation of the vehicle. Initially, the state of the angular velocity was studied when the masses are stationary because the moment of inertia does not play an important role. The result is that the angular velocities for the different masses will be the same value as their initial value. Also, it is assumed that there are no external forces such as gravity and friction. Therefore, our vehicle rotates at the same initial speed. Second, the effect on the angular velocities when some mass on each axis change position and move further down to the outer ends of the system was studied. In this case, 'some mass' means the mass on the axes in which the vehicle is not rotating. In other words, in order to rotate the vehicle about the x-axis, we need to know the positions of the y and z masses. Therefore, there are only two masses that play a role on the vehicle rotation. After setting the initial conditions it was obtained that when the position of the masses was altered, the angular velocities were seen to decrease based on our simulations using the Matlab program. Changing the position of the mass undeniably changes the moment of inertia which in turn cause the angular velocity to change and not stay at the same speed. The last simulation in this study was investigated for the condition when all the masses are not stationary. In this case, all three masses on their respective axes are moving. The respective distances of each mass from its initial starting point and its effect on the angular velocity as the masses moved further towards the outer ends of the system was examined. In the previous case only, movement of two of the three masses were simulated and its effect on angular velocity determined. The critical positioning of the three masses was expected to greatly affect the angular velocity considering that the positions of the mass can significantly alter the angular velocity. The change in positions were simulated in Matlab and it was observed that as the masses moved further outward the angular velocities decrease and reached a constant limit.M.S., Mechanical Engineering and Mechanics -- Drexel University, 201