© 1958 by Oxford University Press
THEORY OF THE SPINNING BALLOON
( Shirley Institute Manchester )
Differential equations of motion are obtained for a flexible uniform string rotating with a constant large angular velocity about a fixed axis when the string has a constant velocity along its length and air drag per unit length is proportional to a fixed power of the normal component of air velocity and acts in the direction of this component. For steady state curves the equations are solved, a formal solution being obtained for the case of zero air-drag, and an expansion for finite air-drag.