A blimp flies at 30 ft/s at an altitude where the specific weight of the air is 0.07
Chapter 11, Problem 11.29(choose chapter or problem)
A blimp flies at 30 ft/s at an altitude where the specific weight of the air is 0.07 lbf/ft3 and the kinematic viscosity is l.3 X I 0-4 fr2!s. The blimp has a length-to-diameter ratio of 5 and has a drag coefficient corresponding to the streamlined body in Fig. 11.9 (on p. 413 in 1l.3 ). The diameter of the blimp is 80 ft. What is the power required to propel the blimp at this speed?
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