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| Title: |
Preliminary Test Results of a Non-Contacting Finger Seal on a Herringbone-Grooved Rotor
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| Author(s): |
Proctor, Margaret P.; Degado, Irebert R.
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| Abstract: |
Low leakage, non-contacting finger seals have potential to reduce gas turbine engine specific fuel consumption by 2 to 3 percent and to reduce direct operating costs by increasing the time between engine overhauls. A non-contacting finger seal with concentric lift-pads operating adjacent to a test rotor with herringbone grooves was statically tested at 300, 533, and 700 K inlet air temperatures at pressure differentials up to 576 kPa. Leakage flow factors were approximately 70 percent less than state-of-the-art labyrinth seals. Leakage rates are compared to first order predictions. Initial spin tests at 5000 rpm, 300 K inlet air temperature and pressure differentials to 241 kPa produced no measurable wear.
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| NASA Center: |
Glenn Research Center
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| Publication Date: |
November 2008
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| Document Source: |
CASI |
| Online Source: |
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| Document ID: |
20090001313
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| Publication Information: |
Number of Pages = 23 |
| Report Number: |
AIAA Paper-2008-4506; E-16560-1; NASA/TM-2008-215475
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| Price Code: |
A03 |
| Related Information: |
Prepared for the 44th Joint Propulsion Conference and Exhibit |
| Keywords: |
LEAKAGE; LABYRINTH SEALS; BRUSH SEALS; GAS PRESSURE; INLET TEMPERATURE; GAS TURBINE ENGINES; FUEL CONSUMPTION; COST REDUCTION; OPERATING COSTS; SPIN TESTS;
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| Accessibility: |
Unclassified; No Copyright; Unlimited; Publicly available; Monthly Report |
| Updated/Added to NTRS: |
2009-01-15 |
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