An aircraft engine develops 150kW at 1500rpm. The engine output shaft is steel which fails when the shear stress is 160N/mm2. a) If the output shaft is solid, determine a suitable diameter to give a safety factor of three. b) If the shaft is hollow with an external diameter of 50mm, calculate a suitable internal diameter to give a safety factor of three. Also, determine the percentage saving in weight.

An aircraft engine develops 150kW at 1500rpm. The engine output shaft is steel which fails when the shear stress is 160N/mm2. a) If the output shaft is solid, determine a suitable diameter to give a safety factor of three. b) If the shaft is hollow with an external diameter of 50mm, calculate a suitable internal diameter to give a safety factor of three. Also, determine the percentage saving in weight.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.7.8P: A tubular shaft being designed for use on a construction site must transmit 120 kW at 1,75 Hz, The...

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An aircraft engine develops 150kW at 1500rpm. The engine output shaft is steel which failswhen the shear stress is 160N/mm2.a) If the output shaft is solid, determine a suitable diameter to give a safety factor of three.b) If the shaft is hollow with an external diameter of 50mm, calculate a suitable internaldiameter to give a safety factor of three. Also, determine the percentage saving in weight.
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