NASA NTRS · 19820020421
CF6 Jet Engine Performance Improvement: High Pressure Turbine Active Clearance Control
Abstract
An active clearance control system was developed which reduces fuel consumption and performance degradation. This system utilizes compressor discharge air during takeoff and fan discharge air during cruise to impinge on the shroud structure to improve the thermal response. The system was evaluated in component and engine tests. The test results demonstrated a performance improvement of 0.7 percent in cruise SFC.
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Rich, S. E., Fasching, W. A.. 1982-06-01. CF6 Jet Engine Performance Improvement: High Pressure Turbine Active Clearance Control. https://ntrs.nasa.gov/citations/19820020421
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