Patent Description:
Rotational equipment such as a gas turbine engine may include a radial scoop for collecting lubricant injected into a compartment from a nozzle. Various types and configurations of radial scoops are known in the art. While these known radial scoops have various advantages, there is still room in the art for improvement. There is a need in the art therefore for an improved scoop assembly for rotational equipment.

<CIT> discloses an internally cooled seal runner.

<CIT> discloses a seal and bearing assembly for a gas turbine engine and a method of assembling the same.

<CIT> discloses an oil scoop with an integrated sensor.

<CIT> discloses a non-uniform spray pattern oil delivery nozzle.

According to an aspect of the present invention, an assembly is provided for rotational equipment in accordance with claim <NUM>.

The following optional features may be applied to the above aspect.

The rotational equipment may be configured as or otherwise include a gas turbine engine.

The base of the second rotatable body may be abutted axially against the first rotatable body.

The assembly may also include a lubricant injector configured to direct a first lubricant jet at the inlet of the first scoop aperture when the first rotatable body is at a first rotational position about the rotational axis. The second scoop may be configured to collect lubricant from the first lubricant jet that splashes off of the first rotatable body when the first rotatable body is at a second rotational position about the rotational axis.

The first rotatable body may also include a second scoop with a second scoop aperture that extends obliquely through the first rotatable body. The injector may be configured to direct the first fluid jet from the first nozzle orifice into an inlet of the second scoop aperture. The injector may also be configured to direct the second fluid jet from the second nozzle orifice into the inlet of the second scoop aperture.

The first scoop aperture may extend obliquely through the rotatable body along a first scoop aperture centerline. The first scoop aperture centerline may include, relative to the rotational axis, a circumferential component and a radial component.

The first scoop may also include a scoop channel fluidly coupled with the first scoop aperture. The scoop channel may project radially towards the rotational axis into the first rotatable body. The scoop channel may extend circumferentially within the first rotatable body.

The scoop channel may extend circumferentially within the first rotatable body to the inlet of the first scoop aperture.

The first scoop may also include a scoop channel fluidly coupled with the first scoop aperture. The scoop channel may project radially away from the rotational axis into the first rotatable body. The scoop channel may extend circumferentially within the first rotatable body.

The scoop channel may also extend axially into the first rotatable body.

The assembly may also include an additional rotatable body extending axially along and circumferentially about the rotational axis. The additional rotatable body may be abutted axially against the first rotatable body. The first rotatable body may be configured to direct fluid received from the first nozzle orifice and the second nozzle orifice to the additional rotatable body.

The additional rotatable body may be configured as or otherwise include an inner race of a bearing.

The assembly may also include a second rotatable body extending axially along and circumferentially about the rotational axis. A base of the second rotatable body may be abutted axially against the first rotatable body. The second rotatable body may be configured as or otherwise include a second scoop with a scoop arm projecting axially out from the base of the second rotatable body.

The scoop arm may axially overlap at least a portion of the first scoop.

The second scoop may be configured to collect fluid from at least one of the first fluid jet or the second fluid jet that splashes off of the first rotatable body.

The second rotatable body may also be configured as or otherwise include a seal land.

The first target location and the second target location may be circumferentially aligned about the rotational axis.

The assembly may also include a gas turbine engine rotating assembly. The gas turbine engine rotating assembly may include the first rotatable body. The rotational equipment may be configured as or otherwise include a gas turbine engine.

<FIG> illustrates an assembly <NUM> for rotational equipment with an axial centerline <NUM>, which centerline <NUM> may also be an axis of rotation (e.g., a rotational axis) for one or more components of the rotational equipment assembly <NUM>. An example of such rotational equipment is a geared or direct-drive (e.g., turbofan or turbojet) gas turbine engine for an aircraft propulsion system, an exemplary embodiment of which is described below in further detail (e.g., see <FIG>). However, the rotational equipment assembly <NUM> of the present disclosure is not limited to such an aircraft or gas turbine engine application. The rotational equipment assembly <NUM>, for example, may alternatively be configured with rotational equipment such as an industrial gas turbine engine, a wind turbine, a water turbine or any other apparatus in which fluid injected into a plenum by at least one injector is collected by a rotating scoop.

The rotational equipment assembly <NUM> of <FIG> includes a static structure <NUM>, a rotating assembly <NUM> and at least one bearing <NUM> for rotatably supporting the rotating assembly <NUM> relative to the static structure <NUM>. The rotational equipment assembly <NUM> of <FIG> also includes a seal assembly <NUM> and at least one fluid injector <NUM>; e.g., a lubricant injector.

The static structure <NUM> is configured as a stationary part of the rotational equipment. The static structure <NUM> of <FIG>, for example, is configured to at least partially form an internal bearing compartment <NUM> for housing at least the bearing <NUM> (or any other plenum). This static structure <NUM> includes a bearing support <NUM> such as, but not limited to, a strut. The static structure <NUM> also includes a seal assembly support (e.g., an annular wall) to which a (e.g., adjustable, spring loaded) carrier <NUM> for the seal assembly may be mounted.

The rotating assembly <NUM> of <FIG> includes at least a rotatable base structure <NUM>, a first rotatable body <NUM> and a second rotatable body <NUM>. The rotating assembly <NUM> and its rotatable components <NUM>, <NUM> and <NUM> are each configured to rotate about a common rotational axis, in the embodiment of <FIG> the axial centerline <NUM>.

The rotatable base structure <NUM> of <FIG> is configured as a tubular shaft. However, in other embodiments, the rotatable base structure <NUM> may be configured as another component (e.g., a sleeve) mounted to and rotatable with a shaft of the rotational equipment, or any other rotor within the rotational equipment. The rotatable base structure <NUM> of <FIG> extends axially along the axial centerline <NUM> through (or partially into or within) the static structure <NUM>. The static structure <NUM> of <FIG> thereby extends circumferentially about (e.g., completely around) the axial centerline <NUM> and the rotating assembly <NUM> and its rotatable base structure <NUM>.

The first rotatable body <NUM> is configured as a scoop element; e.g., a radial scoop element (see also <FIG>). The first rotatable body <NUM> may also be configured as an intermediate element for locating two other axially adjoining elements (e.g., the bearing <NUM> and the second rotatable body <NUM>) relative to one another. The first rotatable body <NUM>, for example, may also be configured as a shaft spacer, a runner, a sleeve, etc..

The first rotatable body <NUM> is configured as a tubular body with an inner bore configured to receive the rotatable base structure <NUM>. The first rotatable body <NUM> of <FIG>, for example, extends axially along the axial centerline <NUM> between and to an axial first end <NUM> and an axial second end <NUM>. The first rotatable body <NUM> extends circumferentially about (e.g., completely around) the axial centerline <NUM>. The first rotatable body <NUM> extends radially between and to a radial inner side <NUM> and a radial outer side <NUM>.

The first rotatable body <NUM> of <FIG> includes a tubular spacer portion <NUM> and a tubular scoop portion <NUM>. The spacer portion <NUM> is arranged at (e.g., on, adjacent or proximate) the first rotatable body first end <NUM>. The scoop portion <NUM> is arranged at (e.g., on, adjacent or proximate) the first rotatable body second end <NUM>.

The spacer portion <NUM> of <FIG> extends axially along the axial centerline <NUM> from the first rotatable body first end <NUM> to the scoop portion <NUM>. The spacer portion <NUM> extends radially between and to a (e.g., tubular) radial inner surface <NUM> and a (e.g., tubular) radial outer surface <NUM>. The spacer portion inner surface <NUM> is radially recessed (in an outward direction away from the axial centerline <NUM>) from the first rotatable body inner side <NUM>; e.g., a radius of the spacer portion inner surface <NUM> is greater than a radius of the first rotatable body inner side <NUM>. The spacer portion outer surface <NUM> is radially recessed (in an inward direction towards the axial centerline <NUM>) from the first rotatable body outer side <NUM>; e.g., a radius of the spacer portion outer surface <NUM> is less than a radius of the first rotatable body outer side <NUM>. The present disclosure, however, is not limited to such an exemplary relationship.

The scoop portion <NUM> of <FIG> extends axially along the axial centerline <NUM> from the first rotatable body second end <NUM> to the spacer portion <NUM>. The scoop portion <NUM> extends radially between and to a (e.g., generally tubular) radial inner surface <NUM> and a (e.g., generally tubular) radial outer surface <NUM>. The scoop portion inner surface <NUM> is located at the first rotatable body inner side <NUM>; thus, a radius of the scoop portion inner surface <NUM> is less than the radius of the spacer portion inner surface <NUM>. An (e.g., annular) inner shelf surface <NUM> may thereby extend radially between and to the scoop portion inner surface <NUM> and the spacer portion inner surface <NUM>. The scoop portion outer surface <NUM> is located at the first rotatable body outer side <NUM>; thus, a radius of the scoop portion outer surface <NUM> is greater than the radius of the spacer portion outer surface <NUM>. An (e.g., annular) outer shelf surface <NUM> may thereby extend radially between and to the scoop portion outer surface <NUM> and the spacer portion outer surface <NUM>. Of course, in other embodiments, the inner surfaces <NUM> and <NUM> may be configured as a single inner surface and/or the outer surfaces <NUM> and <NUM> may be configured as a single outer surface, or otherwise.

The scoop portion <NUM> of <FIG> includes one or more first rotatable body scoops <NUM>; e.g., radial scoops. These first rotatable body scoops <NUM> are arranged at discrete circumferential locations about the axial centerline <NUM> in an annular array.

Referring to <FIG>, each of the first rotatable body scoops <NUM> is configured to receive and/or collect fluid (e.g., lubricant) at the first rotatable body outer side <NUM> and direct that fluid to the first rotatable body inner side <NUM>. Each first rotatable body scoop <NUM> of <FIG>, for example, includes a first scoop aperture <NUM> (e.g., a through hole) which extends longitudinally along a longitudinal first scoop aperture centerline <NUM> from an inlet <NUM> (e.g., an orifice) of the first scoop aperture <NUM> to an outlet <NUM> (e.g., an orifice) of the first scoop aperture <NUM>, where the first scoop aperture inlet <NUM> is at the outer side <NUM> and/or the outer surface <NUM> and the first scoop aperture outlet <NUM> is at the inner side <NUM> and/or the inner surface <NUM>.

The first scoop aperture centerline <NUM> may have a (e.g., non-zero) radial component and a (e.g., non-zero) circumferential component. The first scoop aperture centerline <NUM> and, thus, the first scoop aperture <NUM> may thereby extend obliquely (e.g., diagonally) through the first rotatable body <NUM>, for example, a plane perpendicular to the axial centerline <NUM>; e.g., plane of <FIG>. The first scoop aperture centerline <NUM> of each first scoop aperture <NUM> may lie in a common plane; e.g., the plane perpendicular to the axial centerline <NUM>. The first scoop aperture centerline <NUM> may therefore have no (e.g., a zero) axial component. In other embodiments, however, the first scoop aperture centerline <NUM> may also have a (e.g., non-zero) axial component.

Typically, a trajectory <NUM> of the first scoop aperture <NUM> from its inlet <NUM> to its outlet <NUM> will extend in a circumferential direction opposite to a direction of rotation <NUM> of the rotating assembly <NUM>. However, in other embodiments, the trajectory <NUM> of the first scoop aperture <NUM> from its inlet <NUM> to its outlet <NUM> may extend in a circumferential direction common to the direction of rotation <NUM> of the rotating assembly <NUM>.

Each first rotatable body scoop <NUM> of <FIG> also includes an outer channel <NUM> (e.g., an inlet / capture channel) and an inner channel <NUM> (e.g., an outlet / supply channel). The outer channel <NUM> is positioned circumferentially forward / upstream of the first scoop aperture inlet <NUM>. The outer channel <NUM> extends axially between opposing axial channel sidewalls <NUM>. The outer channel <NUM> extends radially (in an inward direction towards the axial centerline <NUM>) partially into the first rotatable body <NUM> from the scoop portion outer surface <NUM> to a radial channel sidewall <NUM>. The outer channel <NUM> extends circumferentially within the first rotatable body <NUM> from a forward / upstream channel end <NUM> to an aft / downstream channel end <NUM>. The outer channel <NUM> is fluidly coupled with and upstream of the respective first scoop aperture inlet <NUM>. The aft / downstream channel end <NUM> of <FIG>, for example, is located at the first scoop aperture inlet <NUM>. The outer channel <NUM> of <FIG> may thereby extend circumferentially within the first rotatable body <NUM> to the first scoop aperture inlet <NUM>. The present disclosure, however, is not limited to such an exemplary direct fluid coupling.

The inner channel <NUM> is positioned circumferentially aft / downstream of the first scoop aperture outlet <NUM>. The inner channel <NUM> extends axially partially into the first rotatable body <NUM> from the first rotatable body second end <NUM> to an axial channel sidewall <NUM>. The inner channel <NUM> extends radially (in an outward direction away from the axial centerline <NUM>) partially into the first rotatable body <NUM> from the scoop portion inner surface <NUM> to a radial channel sidewall <NUM>. The inner channel <NUM> extends circumferentially within the first rotatable body <NUM> from a forward / upstream channel end <NUM> to an aft / downstream channel end <NUM>. The inner channel <NUM> is fluidly coupled with and downstream of the respective first scoop aperture outlet <NUM>. A notch <NUM> in the scoop portion inner surface <NUM>, for example, may extend circumferentially between and thereby fluidly couple the inner channel <NUM> at its forward / upstream channel end <NUM> and the respective first scoop aperture outlet <NUM>. The present disclosure, however, is not limited to such an exemplary indirect fluid coupling.

Referring to <FIG>, the first rotatable body <NUM> also includes one or more fluid couplings <NUM> (one visible in <FIG>). Examples of such fluid couplings include, but are not limited to, channels, notches, through-holes, etc. Each fluid coupling <NUM> of <FIG>, for example, is arranged at the inner side <NUM> and projects partially radially into the first rotatable body <NUM> from the inner surface <NUM>. Each fluid coupling <NUM> also extends axially through the first rotatable body <NUM>. Each fluid coupling <NUM> of <FIG> may thereby fluidly couple a respective one of the inner channels <NUM> with, for example, an annular plenum <NUM> radially bounded by the spacer portion inner surface <NUM>; see also <FIG>. Of course, in other embodiments, each coupling <NUM> may alternatively be configured as an extension of the entire respective inner channel <NUM> axially to the inner shelf surface <NUM> as shown in <FIG>. In addition, one or more or each inner channel <NUM> may extend axially partially into the first rotatable body <NUM> from the inner shelf surface <NUM> to an axial channel sidewall <NUM>'.

Referring to <FIG>, the second rotatable body <NUM> is configured as another scoop element; e.g., an axial scoop. The second rotatable body <NUM> may also or alternatively be configured as a seal land for the seal assembly <NUM>.

The second rotatable body <NUM> is configured as a tubular body with an inner bore configured to receive the rotatable base structure <NUM>. The second rotatable body <NUM> of <FIG>, for example, extends circumferentially about (e.g., completely around) the axial centerline <NUM>. Referring to <FIG>, the second rotatable body <NUM> extends axially along the axial centerline <NUM> between and to an axial first end <NUM> and an axial second end <NUM>. The first rotatable body <NUM> extends radially between and to a radial inner side <NUM> and a radial outer side <NUM>.

The second rotatable body <NUM> of <FIG> includes a tubular seal land portion <NUM> and a tubular scoop portion <NUM> which forms a second rotatable body scoop <NUM>; e.g., an axial scoop. The seal land portion <NUM> is arranged at (e.g., on, adjacent or proximate) the second rotatable body second end <NUM>. The scoop portion <NUM> is arranged at (e.g., on, adjacent or proximate) the second rotatable body first end <NUM>.

The seal land portion <NUM> forms a base <NUM> of the second rotatable body <NUM>. This base <NUM> extends axially along the axial centerline <NUM> between opposing first and second base ends <NUM> and <NUM>. The base <NUM> extends radially between and to a (e.g., tubular) radial inner surface <NUM> and a (e.g., tubular) radial outer surface <NUM>. The base inner surface <NUM> is at the second rotatable body inner side <NUM>. The base outer surface <NUM> is at the second rotatable body outer side <NUM>.

Referring to <FIG>, the base <NUM> includes one or more internal fluid passages <NUM> (shown by dashed lines in <FIG>). Referring to <FIG>, each fluid passage <NUM> extends through the second rotatable body <NUM> between and to an inlet <NUM> and an outlet <NUM>. The fluid passage inlets <NUM> are arranged circumferentially about the axial centerline <NUM>; best shown in <FIG>. Each fluid passage inlet <NUM> may be arranged at the first base end <NUM> and/or at an intersection between the seal land portion <NUM> and the scoop portion <NUM>. One or more or each of the fluid passage outlets <NUM> may be arranged at the base outer surface <NUM>; e.g., as shown in <FIG>. One or more or each of the fluid passage outlets <NUM> may be arranged at a (e.g., annular, radially extending) seal land surface <NUM> of the second rotatable body <NUM> and its base <NUM>; e.g., as shown in <FIG>.

The scoop portion <NUM> includes an (e.g., tubular) axial scoop arm <NUM>. This scoop arm <NUM> projects axially along the axial centerline <NUM> out from the base <NUM> to an axial distal arm end <NUM> at the second rotatable body first end <NUM>. The scoop arm <NUM> includes an annular rim <NUM> at its distal arm end <NUM>, which rim <NUM> projects radially (in an inward direction towards the axial centerline <NUM>) to a radial distal rim edge <NUM>. With this rim <NUM>, the second rotatable body <NUM> is configured with a (e.g., annular) channel <NUM> axially between the rim <NUM> and the base <NUM>. This channel <NUM> and, more generally, the second rotatable body scoop <NUM> are configured for collecting fluid (e.g., lubricant) as discussed below in further detail.

Referring to <FIG>, the bearing <NUM> may be configured as a roller element bearing. The bearing <NUM> of <FIG>, for example, includes an annular outer race <NUM>, an annular inner race <NUM> and a plurality of bearing elements <NUM>; e.g., cylindrical or spherical elements. The outer race <NUM> circumscribes the inner race <NUM> and the bearing elements <NUM>. The outer race <NUM> is mounted to the static structure <NUM> and, more particularly, the bearing support <NUM>. The inner race <NUM> circumscribes and is mounted to the rotatable base structure <NUM>. The bearing elements <NUM> are arranged in an annular array about the axial centerline <NUM>, which array is radially between and engaged with the outer race <NUM> and the inner race <NUM>. The present disclosure, however, is not limited to the foregoing exemplary bearing configuration. For example, in other embodiments, the bearing <NUM> may alternatively be configured as a journal bearing or any other type of bearing utilized in the rotational equipment.

The seal assembly <NUM> includes the second rotatable body <NUM> and a non-rotating body <NUM>. The non-rotating body 152of <FIG> is configured as a (e.g., annular) seal element <NUM> such as, but not limited to, a carbon seal element. This seal element <NUM> is configured to (e.g., axially) contact the second rotatable body <NUM> and its seal land surface <NUM> in order to seal an annular gap between the rotating assembly <NUM> and the static structure <NUM>.

Each of the components <NUM>, <NUM>, <NUM> and <NUM> is mounted to the rotatable base structure <NUM>. The second rotatable body <NUM> is arranged axially between and may be abutted axially against a shoulder <NUM> of the rotatable base structure <NUM> at its second end <NUM> and the first rotatable body <NUM> at its end <NUM>. The first rotatable body <NUM> is arranged axially between and may be abutted axially against the base <NUM> at its second end <NUM> and the inner race <NUM> at its first end <NUM>. The inner race <NUM> is arranged axially between and may be abutted axially against the first rotatable body <NUM> and another element <NUM> of the rotating assembly <NUM>; e.g., another rotatable body such as, but not limited to, another seal land. Each of the inner channels <NUM> may be fluidly coupled with one or more fluid passages <NUM> in / with the inner race <NUM> and/or one or more fluid passages <NUM> in / with the other element <NUM>. In the specific embodiment of <FIG>, the inner race <NUM> fluidly couples the other element <NUM> with the first rotatable body <NUM>.

The fluid injector <NUM> is arranged radially outboard of the rotating assembly <NUM>. The fluid injector <NUM> is configured to inject fluid (e.g., lubricant) into the bearing compartment <NUM> for providing that fluid to other components of the rotational equipment such as, but not limited to, one or more or each of the rotatable bodies <NUM>, <NUM>, <NUM>, <NUM> and <NUM>.

The fluid injector <NUM> includes one or more nozzle orifices <NUM> and <NUM>. These nozzle orifices <NUM> and <NUM> may be fluidly coupled with and, thus, supplied with fluid (e.g., lubricant) from a common internal passage <NUM> within the fluid injector <NUM>, and/or from respective discrete internal passages within the fluid injector <NUM>.

Referring to <FIG> and <FIG>, each of the nozzle orifices <NUM> and <NUM> is configured to direct a respective fluid jet <NUM>, <NUM> (e.g., a stream of fluid) out of the fluid injector <NUM>, into the bearing compartment <NUM> (or another space) and to a respective target location <NUM>, <NUM>. In the embodiment of <FIG> and <FIG>, the first and second target locations <NUM> and <NUM> are disposed at discrete axial locations along the axial centerline <NUM> and on the first rotatable body <NUM>. However, the first and the second target locations <NUM> and <NUM> may (or may not) be circumferentially aligned.

Referring again to <FIG> and <FIG>, the first and second target locations <NUM> and <NUM> are on the scoop portion <NUM> of the first rotatable body <NUM>. Thus, when the first rotatable body <NUM> is at the rotational position of <FIG> about the axial centerline <NUM>, the first and second target locations <NUM> and <NUM> may be coincident with a respective one of the outer channels <NUM>. The first and the second nozzle orifices <NUM> and <NUM> are each thereby operable to direct at least a portion or an entirety of the respective fluid jet <NUM>, <NUM> at and/or into the respective outer channel <NUM>; e.g., each fluid jet <NUM>, <NUM> is coincident with the respective outer channel <NUM>. Similarly, when the first rotatable body <NUM> is at the rotational position of <FIG> about the axial centerline <NUM>, the first and second target locations <NUM> and <NUM> may be coincident with a respective one of the first scoop passage inlets <NUM>. The first and the second nozzle orifices <NUM> and <NUM> are each thereby operable to direct at least a portion or an entirety of the respective fluid jet <NUM>, <NUM> at and/or into the respective first scoop aperture inlet <NUM>; e.g., each fluid jet <NUM>, <NUM> is coincident with the respective first scoop aperture inlet <NUM>. Each first rotatable body scoop <NUM> in the first rotatable body <NUM> is thereafter operable to direct at least a portion of the received fluid through the respective first scoop aperture <NUM> and to the downstream components; e.g., the inner race <NUM> and then the other element <NUM> (see <FIG>).

In addition, while some of the fluid jets <NUM> and <NUM> flows into the first rotatable body scoops <NUM>, a portion of the fluid jets <NUM> and/or <NUM> directed from the first and the second nozzle orifices <NUM> and <NUM> may also splash against the scoop portion <NUM> and flow into the second scoop <NUM>; e.g., see <FIG>. The fluid jets <NUM> and/or <NUM>, for example, may splash against an outer surface of the scoop portion (e.g., surface <NUM> and/or <NUM> in <FIG>) and be redirected into the second scoop <NUM>. The second rotatable body scoop <NUM> collects this fluid for directing into the fluid passages <NUM> (see <FIG>). A single fluid injector (e.g., <NUM>) may thereby provide fluid for cooling and/or lubricating various different components that are forward and aft of that injector. Of course, in other embodiments, the rotational equipment assembly <NUM> may alternatively include multiple injectors <NUM> and/or one or more additional injectors.

Referring to <FIG>, under certain operating condition, the rotating assembly <NUM> may move (e.g., axially displace, translate, etc.) relative to the fluid injector <NUM>. <FIG> depicts the rotating assembly components (e.g., <NUM>, <NUM> and <NUM>) under ideal conditions, which may also correspond to the component arrangement while the rotational equipment is non-operational. <FIG> depicts the rotating assembly components (e.g., <NUM>, <NUM> and <NUM>) under a forward displacement condition. <FIG> depicts the rotating assembly components (e.g., <NUM>, <NUM> and <NUM>) under an aft displacement condition. Notably, no matter whether under ideal conditions, under a forward displacement condition or an aft displacement condition, at least one of the fluid jets <NUM> and/or <NUM> may remain on target to provide fluid to the first rotatable body scoops <NUM>. As a result, regardless of the condition, the downstream components (e.g., see <FIG>, components <NUM>, <NUM> and/or <NUM>) will continue to receive the fluid for lubrication and/or cooling. By contrast, referring to <FIG>, where a fluid injector <NUM> includes a single nozzle orifice <NUM> and/or relatively small aperture inlets <NUM>, downstream components may be periodically starved of fluid for lubrication and/or cooling under a forward displacement condition (see <FIG>) and/or an aft displacement condition (see <FIG>). Furthermore, fluid that misses the aperture inlets <NUM> may splash into a compartment and miss an adjacent axial scoop (not shown) positioned axially to a side of the radial scoop <NUM>. By contrast, since the second rotatable body scoop <NUM> of <FIG> at least partially (or completely) axially overlaps the first rotatable body scoops <NUM> and their inlets <NUM>, the second rotatable body scoop <NUM> may collect any fluid that misses the first rotatable body scoops <NUM> due to axial misalignment.

<FIG> is a side cutaway illustration of a geared turbine engine <NUM> with which the rotational equipment assembly <NUM> of <FIG> may be configured. The turbine engine <NUM> extends along an axial centerline (e.g., the centerline <NUM>) between an upstream airflow inlet <NUM> and a downstream airflow exhaust <NUM>. The turbine engine <NUM> includes a fan section <NUM>, a compressor section <NUM>, a combustor section <NUM> and a turbine section <NUM>. The compressor section <NUM> includes a low pressure compressor (LPC) section 187A and a high pressure compressor (HPC) section 187B. The turbine section <NUM> includes a high pressure turbine (HPT) section 189A and a low pressure turbine (LPT) section 189B.

The engine sections <NUM>-189B are arranged sequentially along the axial centerline <NUM> within an engine housing <NUM>. This engine housing <NUM> includes an inner case <NUM> (e.g., a core case) and an outer case <NUM> (e.g., a fan case). The inner case <NUM> may house one or more of the engine sections 187A-189B; e.g., an engine core. This inner case <NUM> may include or may be connected to the static structure <NUM> of <FIG>. The outer case <NUM> may house at least the fan section <NUM>.

Each of the engine sections <NUM>, 187A, 187B, 189A and 189B includes a respective rotor <NUM>-<NUM>. Each of these rotors <NUM>-<NUM> includes a plurality of rotor blades arranged circumferentially around and connected to one or more respective rotor disks. The rotor blades, for example, may be formed integral with or mechanically fastened, welded, brazed, adhered and/or otherwise attached to the respective rotor disk(s).

The fan rotor <NUM> is connected to a gear train <NUM>, for example, through a fan shaft <NUM>. The gear train <NUM> and the LPC rotor <NUM> are connected to and driven by the LPT rotor <NUM> through a low speed shaft <NUM>. The HPC rotor <NUM> is connected to and driven by the HPT rotor <NUM> through a high speed shaft <NUM>. The shafts <NUM>-<NUM> are rotatably supported by a plurality of bearings <NUM>; e.g., rolling element and/or thrust bearings. Each of these bearings <NUM> is connected to the engine housing <NUM> by at least one stationary structure such as, for example, an annular support strut. The rotatable base structure <NUM> of <FIG> may be configured as any one of the shafts <NUM>-<NUM> or a component mounted thereto or otherwise rotatable therewith, and the bearing <NUM> of <FIG> may be configured as any one of the bearings <NUM>.

During operation, air enters the turbine engine <NUM> through the airflow inlet <NUM>. This air is directed through the fan section <NUM> and into a core gas path <NUM> and a bypass gas path <NUM>. The core gas path <NUM> extends sequentially through the engine sections 187A-189B. The air within the core gas path <NUM> may be referred to as "core air". The bypass gas path <NUM> extends through a bypass duct, which bypasses the engine core. The air within the bypass gas path <NUM> may be referred to as "bypass air".

The rotational equipment assembly <NUM> may be included in various turbine engines other than the one described above as well as in other types of rotational equipment. The rotational equipment assembly <NUM>, for example, may be included in a geared turbine engine where a gear train connects one or more shafts to one or more rotors in a fan section, a compressor section and/or any other engine section. Alternatively, the rotational equipment assembly <NUM> may be included in a turbine engine configured without a gear train. The rotational equipment assembly <NUM> may be included in a geared or non-geared turbine engine configured with a single spool, with two spools (e.g., see <FIG>), or with more than two spools. The turbine engine may be configured as a turbofan engine, a turbojet engine, a propfan engine, a pusher fan engine or any other type of turbine engine. The present disclosure therefore is not limited to any particular types or configurations of turbine engines or rotational equipment.

Claim 1:
An assembly (<NUM>) for rotational equipment, comprising:
a first rotatable body (<NUM>) extending axially along and circumferentially about a rotational axis (<NUM>), the first rotatable body (<NUM>) comprising a first scoop (<NUM>) with a first scoop aperture (<NUM>) that extends obliquely through the first rotatable body (<NUM>); and
an injector (<NUM>) including a first nozzle orifice (<NUM>) and a second nozzle orifice (<NUM>), the injector (<NUM>) configured to direct a first fluid jet (<NUM>) from the first nozzle orifice (<NUM>) into an inlet (<NUM>) of the first scoop aperture (<NUM>), and the injector (<NUM>) further configured to direct a second fluid jet (<NUM>) from the second nozzle orifice (<NUM>) into the inlet (<NUM>) of the first scoop aperture (<NUM>),
characterized in that:
the injector (<NUM>) is configured to direct the first fluid jet (<NUM>) from the first nozzle orifice (<NUM>) to a first target location (<NUM>) on the first rotatable body (<NUM>) which is at least partially axially aligned with the inlet (<NUM>) when the first rotatable body (<NUM>) is at a first rotational position about the rotational axis (<NUM>);
the injector (<NUM>) is further configured to direct the second fluid jet (<NUM>) from the second nozzle orifice (<NUM>) to a second target location (<NUM>) on the first rotatable body (<NUM>) which is at least partially axially aligned with the inlet (<NUM>) when the first rotatable body (<NUM>) is at the first rotational position about the rotational axis (<NUM>); and in that
the first target location (<NUM>) and the second target location (<NUM>) are discretely arranged axially along the rotational axis (<NUM>).