Self-lubricating seal tolerates high sliding speeds. Application of self-acting geometry in form of spiral grooves to faces of ring-seal housing maintains thin air film of relatively high stiffness between seal ring and housing, enabling seal to operate in noncontacting mode over entire engine-operating range. Potential application in sealing fan-bleed air between two counter-rotating shafts in advanced gas-turbine engines.
Spiral-Groove Ring Seal for Counterrotating Shafts
NASA Tech Briefs ; 10 , 3
1986-05-01
Miscellaneous
No indication
English
SAE Technical Papers | 1964
Analytical investigation of the spiral groove face seal
NTRS | 1973
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