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).

Issue Section:
Gas Turbines: Structures and Dynamics
Keywords:
turbines, rotors, design engineering, high-pressure techniques, weight control, optimisation, materials, nickel alloys
Topics:
Design, Disks, Particle spin, Rotation, Spin (Aerodynamics), Stress, Turbines, Rotors, Temperature, Weight (Mass), Nickel alloys, Engines
1.
Cairo, R. R., 1999, “Composite Ring Reinforced Turbine,” Program Final Report, Contract F33615-92-C-2201, Report No. AFRL-PR-WP-TR-1999-2050.
2.
Cairo, R. R., 1992, “Advanced Turbine Rotor Design,” Program Final Report, Contract F33615-85-C-2594, Report No. AFWAL-TR-88-2129.
Copyright © 2002
 by ASME
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