What type of air seal is used in the sump and turbine areas of a gas turbine engine?
⢠Different air seal designs used in gas turbine engines (carbon ring, lip-type, labyrinth, honeycomb) ⢠Where sump and turbine areas are located and what they need to be protected from (oil leakage, hot gas ingestion) ⢠How pressure differences and clearances are used to limit leakage in rotating machinery
⢠Think about which seal type is best suited where there is a rotating shaft passing through a housing that must keep oil in and hot gas out ⢠Consider which seal type relies on small clearances and multiple teeth rather than physical contact to control leakage ⢠Ask yourself: in the harsh, high-temperature turbine area, which seal design is most commonly used in large gas turbines for durability and minimal wear?
⢠Verify which seal type is typically associated with contact sealing versus non-contact clearance sealing ⢠Check which seal arrangement is commonly paired with a honeycomb stator surface to reduce leakage and rotor rub damage ⢠Confirm which of the listed seal types you would most expect to find in the high-temperature turbine and bearing sump regions of a marine gas turbine
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