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for different kinds of service, due consideration must be taken of the fact that in ships of similar design, structural deadweight is consuming smaller portions of the total lift as size increases and speed decreases, and that the weight allowed for accommodation of the paying load depends very much on the kind of load to be carried and in passenger ships on the margin of comfort to be provided.

By a somewhat arbitrary combination, namely: by forming the product of the values representing the efficiency of propulsion and the lifting efficiency, a third expression is obtained:

L = E/Dc x t  this shows the qualities of an airship from both the aerodynamic and structural point of view.

This data was prepared by P. Jaray and furnished me by Dr. Eckner of the Zeppelin Company.

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---------- Reopened for Editing 2024-04-28 22:18:08