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III. COMPOUND EPICYCLIC TRANSMISSIONS To extend their range of application, epicyclic transmissions can be combined with other revolving or conventional drive trains to form larger drive systems. This leads to a large variety of compound transmissions whose operating characteristics at first sight often seem obscure, and whose analysis or synthesis frequently looks complicated. However, basically this is not true since the properties of these compound transmissions can always be reduced to the properties of the simple planetary transmissions. The bewildering multitude of combinations can be handled by grouping together drive systems with identical kinematic properties which can then be treated by a common method. In the following sections such a classification shall be established and the respective characteristic features shall be defined. 168 ...

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