1. A drive shaft to the blades of a helicopter transmits 800 kW at 200 rev/min. Neglecting transmission losses; determine the minimum external and internal diameters of the hollow circular section aluminum alloy shaft, when the maximum permissible shear stress in the shaft is limited to 30 MPa. It may be assumed that the external diameter of this shaft is twice its internal diameter. What will be the resulting angle of twist of this shaft over a length of 2 m, given that the modulus of rigidity, C 26900MPA.

1. A drive shaft to the blades of a helicopter transmits 800 kW at 200 rev/min. Neglecting transmission losses; determine the minimum external and internal diameters of the hollow circular section aluminum alloy shaft, when the maximum permissible shear stress in the shaft is limited to 30 MPa. It may be assumed that the external diameter of this shaft is twice its internal diameter. What will be the resulting angle of twist of this shaft over a length of 2 m, given that the modulus of rigidity, C 26900MPA.

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 3.12.4P: The stepped shaft shown in the figure is required to transmit 600 kW of power at 400 rpm. The shaft...

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