Structural analysis of turbine rings: Calculated stresses in scalloped rings of constant section

Report (1961)
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Published Date

31-10-1961

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National Research Council Aeronautical Report LR 330; NRC No. 6723

Abstract

Calculated stress data are presented for turbine rings suitable for tip-driven turborotors; these rings, whose function is to carry the turbine rotor blades, consist of short independent segments which are pinned to the supporting fan blades, and are arched or scalloped ta carry the operating leads more effectively. It is demonstrated that the scheme is extremely sensitive to the properties of the ring material used, and that titanium alloy is particularly suited to such a role. It is also shown that the weight of the turbine ring may be reduced to less than half the weight of the turbine blades carried, provided sufficiently large degrees of scalloping are used.

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