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US 2020/0370475 A1Published application
Inlet particle separator
AssigneeRolls-Royce North American Technologies Inc.
InventorDouglas D. Dierksmeier
Life of this patent
Estimating the term…
Abstract
A gas turbine engine includes an engine core, a propulsion unit, and a particle separator. The engine core is configured to combust fuel and air to drive rotation of the propulsion unit. The propulsion unit is driven to rotate by the engine core to provide thrust for the gas turbine engine. The particle separator is configured to separate unwanted particles from air being directed toward the engine core.
Claims20
A gas turbine engine comprising
- an engine core including a compressor, a combustor, and a turbine,
- a propulsion unit powered by the engine core, the propulsion unit including a drive shaft coupled with the engine core and configured to be driven to rotate about an axis by the turbine when the gas turbine engine is in a first operational mode and a bladed rotor coupled with the engine core and configured to be driven to rotate about the axis by the turbine when the gas turbine engine is in a second operational mode, and
- an inlet particle separator configured to receive a flow of fluid and to move between a first arrangement in response to the gas turbine engine being in the first operational mode and a second arrangement in response to the gas turbine engine being in the second operational mode,
- wherein the inlet particle separator separates the flow of fluid into engine core air and scavenge air and directs the engine core air toward the compressor of the engine core and directs the scavenge air around the engine core when the inlet particle separator is in the first arrangement and wherein the inlet particle separator does not separate the flow of fluid and directs the flow of fluid toward the compressor of the engine core when the inlet particle separator is in the second arrangement.
1 more element
An inlet particle separator for a gas turbine engine, the inlet particle separator comprising
- an inner wall arranged circumferentially around an axis,
- an outer wall arranged circumferentially around the inner wall, the inner wall and the outer wall cooperate to define an engine channel configured to direct fluid into an engine core of the gas turbine engine, and
- a moveable wall located axially at least partially upstream of the outer wall and arranged circumferentially around the inner wall to define the engine channel radially between the moveable wall and the inner wall,
- wherein the moveable wall is moveable between a first position in which the moveable wall is spaced apart from the outer wall to define an inlet to a scavenge channel radially between the moveable wall and the outer wall and to separate fluid flow into scavenge air directed into the scavenge channel and engine core air directed into the engine channel and a second position in which the moveable wall is engaged with the outer wall to close the scavenge channel so that all of the fluid flow is directed into the engine channel.
1 more element
A method comprising
- providing an inlet particle separator having an inner wall arranged around an axis, an outer wall arranged circumferentially around the inner wall to define an engine channel, and a moveable wall arranged circumferentially around the inner wall to define an inlet of the inlet particle separator,
- moving the moveable wall to a first position relative to the outer wall to cause the moveable wall and the outer wall to define a scavenge channel in fluid communication with the inlet,
- separating a flow of fluid conducted into the inlet particle separator into an engine core air and a scavenge air with the outer wall,
- directing the engine core air into the engine channel and the scavenge air into the scavenge channel with the outer wall,
- moving the moveable wall to a second position relative to the outer wall to block fluid communication between the scavenge channel and the inlet, and
- directing the flow of fluid conducted into the inlet particle separator into the engine channel.
3 more elements
Dependencies are inferred from the claim text.