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Twin Web Disk — A Step Beyond Convention FREE

[+] Author Affiliations
Ronald R. Cairo

Pratt & Whitney

Kathleen A. Sargent

Air Force Research Laboratory

Paper No. 98-GT-505, pp. V005T14A044; 7 pages
doi:10.1115/98-GT-505
From:
  • ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education
  • Stockholm, Sweden, June 2–5, 1998
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7866-8
  • Copyright © 1998 by ASME

abstract

This paper will discuss a study of an innovative design for an advanced turbine rotor, that could have a great impact on future engines. The design challenge is to provide a minimum weight turbine rotor system that can withstand beyond state-of-the-art levels of AN2 (turbine annulus area multiplied by speed squared). An AN2 limit has been reached for High Pressure Turbine (HPT) disks configured in conventional (single web) geometry with state-of-the-art nickel alloys. The problem has reached the point where increased AN2 has been declared a “Break-Through” technology. The twin-web disk has the potential to provide this break through. This paper will present the history of this turbine rotor design, analytical results, material/component processing and concept validation results. All work was performed under an Air Force sponsored program entitled Composite Ring Reinforced Turbine (CRRT).

Copyright © 1998 by ASME
Topics: Disks
This article is only available in the PDF format.

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