Titlebook: Dynamics of Flexible Spacecraft; Department of Genera Peter W. Likins,Robert E. Roberson,Jens Wittenburg Book 1971 CISM Udine 1971 Dynamics

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a spacecraft characterized as a rigid body having attached a flexible appendage idealized as a collection of elastically interconnected particles. The appendage is permitted in the paper to be configured in a general fashion, but the special case of the planar appendage shown in Fig. 16 is adopted i

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y number of rigid bodies. It has a topological tree-structure. Its hinges of one, two or three degrees of freedom of relative rotational motion contain at least one point which is a fixed point on either one of the two bodies connected by the respective hinge. This point was called the hinge point.

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The influence of spin on mode shapes and frequencies,he only significant difference in systems 2a), 2b), and 2c) is in the steady-state load in the spring restraining the motion of P within the tube; in case 2a) this spring is in tension, in case 2b) it is unloaded, and in case 2c) it is in compression.

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Applications, important relationships. Due to an unfortunate choice of variables, however, he did not arrive at a convenient form for the equations of motion. He considered the problem: Given the motion of the human body as a function of time, i.e. the angular positions, velocities and accelerations of its parts

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