TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Twin Web Disk: A Step Beyond Convention

[+] Author and Article Information
R. R. Cairo

Pratt and Whitney

K. A. Sargent

Air Force Research Laboratory

J. Eng. Gas Turbines Power 124(2), 298-302 (Mar 26, 2002) (5 pages) doi:10.1115/1.1445440 History: Received October 01, 1997; Revised March 01, 1998; Online March 26, 2002
Copyright © 2002 by ASME
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Cairo, R. R., 1999, “Composite Ring Reinforced Turbine,” Program Final Report, Contract F33615-92-C-2201, Report No. AFRL-PR-WP-TR-1999-2050.
Cairo, R. R., 1992, “Advanced Turbine Rotor Design,” Program Final Report, Contract F33615-85-C-2594, Report No. AFWAL-TR-88-2129.


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Overlay of CRRT and TWD geometries
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Photomicrograph showing grain growth across interface on FSD-05
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Monotonic tension results for FSD-06 specimens. Specimens 1–7: rim-bonded, 8–10: rim parent, 11–14: bore.
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Stress rupture results for FSD-06 specimens
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Low-cycle fatigue data for FSD-06 rim
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FSD-08 post bond assembly
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Typical strain survey result using highest reading bore gage (adjacent to web cavity) at 0-deg position
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Residual growth of dead rim versus normalized RPM squared



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