Teresa R. Kline - Storming Media

Relative Performance Comparison Between Baseline Labyrinth and Dual- Brush Compressor Discharge Seats in a T-7OO Engine Test

OCT 95

24 pages

Authors: Robert C. Hendricks; Thomas A. Griffin; Teresa R. Kline; Kristine R. Csavina; Arvind Pancholi; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

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In separate series of YT-700 engine tests, direct comparisons were made between the forward-facing labyrinth and dual-brush compressor discharge seals. Compressor speeds to 43,000 rpm, surface speeds to 160 m/s (530 ft/s), pressures to 1 MPa (145 psi), and temperatures to 680 K(765 deg. F) characterized these test. The wear estimate for 46 hr of engine operations was less than 0.025 mm (0.001 in.) of the Haynes 25 alloy bristles ...