Читать книгу Flight Theory and Aerodynamics - Joseph R. Badick - Страница 33

Without derivation, some of the relationships among tangential (tip) velocity, V_t; radius of rotation, r; revolutions per minute, rpm; centripetal forces, CF; weight of rotating parts, W; and acceleration of gravity, g, are shown below. A more detailed discussion regarding rotorcraft can be found in Chapter 15 of this textbook.

(1.7)

(1.8)

(1.9)

For our discussion, the units of work will be measured in ft‐lb.