COMPOSITE THERMOELECTRIC MATERIAL

An electronics enclosure may include a fibrous thermoelectric material; a thermally and electrically conductive mesh; and a matrix material in which the fibrous thermoelectric material and the thermally and electrically conductive mesh are embedded.

TECHNICAL FIELD

The disclosure relates to thermoelectric materials and electronics enclosures.

BACKGROUND

Electronics enclosures house electronic components. For example, an electronics enclosure may house an engine controller, such as a full authority digital engine controller (FADEC) for a gas turbine engine. The electronics enclosure defines a physical barrier around the electronic components and may protect the electronic components from physical damage.

SUMMARY

In some examples, the disclosure describes an electronics enclosure including a fibrous thermoelectric material; a thermally and electrically conductive mesh; and a matrix material in which the fibrous thermoelectric material and the thermally and electrically conductive mesh are embedded.

In some examples, the disclosure describes a system including an electronics enclosure and an electronic component enclosed in an internal volume of the electronics enclosure. The enclosure includes a fibrous thermoelectric material; a thermally and electrically conductive mesh; and a matrix material in which the fibrous thermoelectric material and the thermally and electrically conductive mesh are embedded. The electrical component is thermally coupled to the electronics enclosure.

In some examples, the disclosure describes a composite thermoelectric material including a fibrous thermoelectric material; a thermally and electrically conductive mesh; a structural reinforcement material; and a matrix material in which the fibrous thermoelectric material, the thermally and electrically conductive mesh, and the structural reinforcement material are embedded.

DETAILED DESCRIPTION

The disclosure describes a composite thermoelectric material and electronics enclosures incorporating the composite thermoelectric material. The composite thermoelectric material may be in the form of a sheet and may include a fibrous thermoelectric material, a thermally and electrically conductive mesh, and a matrix material. The fibrous thermoelectric material and the thermally and electrically conductive mesh may be embedded in the matrix material. In some examples, the composite thermoelectric material also may include a structural reinforcement material, which also may be embedded in the matrix material. The thermally and electrically conductive mesh may be configured to conduct electrical current to the fibrous thermoelectric material to enable the thermoelectric effect. In some examples, the structural reinforcement material layers may be present on both sides of the sheet with the thermally and electrically conductive mesh and the fibrous thermoelectric material between the structural reinforcement material layers.

The composite thermoelectric material may be used as walls of an enclosure or chassis, such as an electronics enclosure. In this way, the one or more walls of the electronics enclosure may be used to transfer heat from within an internal volume of the electronics enclosure to outside the electronics enclosure, or vice versa, to maintain a temperature within the electronics enclosure or of a component within the electronics enclosure within a range.

The electronics enclosure may used as part of a system in which an electronic component is enclosed within an internal volume of the electronics enclosure. In some examples, the electronic component is in thermal communication with the composite thermoelectric material. For example, the electronic component may be in thermal contact with the composite thermoelectric material directly or via a thermal interface material. As another example, a heat pipe may thermally couple the electronic component to the composite thermoelectric material.

Additionally, or alternatively, the composite thermoelectric material may be used to cool and/or heat the internal volume of the electronics enclosure (e.g., air and other materials within the electronics enclosure) instead of or in addition to directly cooling the electronic component. For example, at least a portion of an internal surface of one or more walls of the electronic enclosure may be exposed to the internal volume of the electronics enclosure but may not be in contact with an electronic component or heat pipe. In this way, the electronics enclosure may directly cool and/or heat an electronic component by being thermally coupled to the electronic component, indirectly cool and/or heat an electronic component by cooling an atmosphere of the internal volume of the electronics enclosure, or both.

By incorporating a fibrous thermoelectric material in an electronics enclosure, the electronics enclosure may enable active cooling and/or heating of an internal volume of the electronics enclosure, electronics components within the electronics enclosure, or both. Incorporating the fibrous thermoelectric material may reduce weight compared to an electronics enclosure that includes separate enclosure and cooling systems. Further, the electronics enclosure including the fibrous thermoelectric material may provide a reliable thermal control system, as the system may in some examples include no moving parts such as fans.

FIG. 1is a conceptual diagram illustrating a composite thermoelectric material10in accordance with the disclosure. Composite thermoelectric material10includes a first structural reinforcement layer12, a first thermally and electrically conductive layer14, a fibrous thermoelectric material layer16, a second thermally and electrically conductive layer18, and a second structural reinforcement layer20. In the example ofFIG. 1, first and second structural reinforcement layers12and20define the outer surfaces of composite thermoelectric material10, with first and second thermally and electrically conductive layers14and18between first and second structural reinforcement layers12and20and fibrous thermoelectric material layer16between first and second thermally and electrically conductive layers14and18. In other examples, composite thermoelectric material10may include a single structural reinforcement layer, a single thermally and electrically conductive layer, or both. In other examples, a composite thermoelectric material may include additional layers, as described below with reference toFIGS. 2 and 3.

Structural reinforcement layers12and20may provide structural support to composite thermoelectric material10. In some examples, one or both of structural reinforcement layers12and20may include composite materials. For example, structural reinforcement layers12and20may include fiber reinforced plastics. The fibers may include any suitable composition, such as glass, carbon, aramid, or the like. In some examples, the fibers are selected to have relatively high thermal conductivity to contribute to thermal conductivity of structural reinforcement layers12and20. In some examples, the fibers may be continuous fibers arranged in unidirectional layers, woven or braided fabrics, or the like. In other examples, the fibers may be chopped, relatively short fibers arranged substantially randomly. In still other examples, the fibers may include both continuous fibers arranged in unidirectional layers, woven or braided fabrics, or the like and chopped, relatively short fibers arranged substantially randomly. Continuous fibers may contribute mechanical strength and stiffness along the length of the fiber, while chopped fibers may reduce the anisotropy of the mechanical and thermal properties of structural reinforcement layers12and20and improve thermal conductivity in the z-axis direction ofFIG. 1by having at least some fibers arranged with a long axis oriented out of the x-y plane ofFIG. 1.

In examples in which one or both of structural reinforcement layers12and20include composite materials, the composite material also may include a matrix material in which the fibers are embedded. The matrix material may include a plastic, such as, for example, a polyester, an epoxy, a polyamide, a polycarbonate, a polypropylene, a vinyl ester, or the like.

In some examples, at least a portion of one or both of structural reinforcement layers12and20may include a highly thermally conductive non-composite material. For example, at least a portion of one or both of structural reinforcement layers12and20may include a metal or alloy, such as copper or a copper alloy, aluminum or an aluminum alloy, or the like. The highly thermally conductive non-composite material may facilitate heat transfer to first thermally and electrically conductive layer14, second thermally and electrically conductive layer18, or both at the location at which the highly thermally conductive non-composite material is located.

First and second thermally and electrically conductive layers14and18are located adjacent to and in contact with first and second structural reinforcement layers12and20, respectively. First and second thermally and electrically conductive layers14and18are configured to facilitate heat transfer from first and second structural reinforcement layers12and20to fibrous thermoelectric material layer16and vice versa, and heat transfer parallel to the x-y plane ofFIG. 1(e.g., within the plane of first and second thermally and electrically conductive layers14and18). One or both of first and second thermally and electrically conductive layers14and18are also configured to carry electrical current to fibrous thermoelectric material layer16, which electrical current induces the thermoelectric effect in fibrous thermoelectric material layer16. As such, first and second thermally and electrically conductive layers14and18include thermally and electrically conductive material, such as a metal, an alloy, carbon nanotubes, or combinations thereof. For example, first and second thermally and electrically conductive layers14and18may include copper or a copper alloy, aluminum or an aluminum alloy, another electrically conductive metal or alloy, or combinations thereof.

In some examples, first and second thermally and electrically conductive layers14and18may include thermally and electrically conductive wires or filaments in a matrix material. The thermally and electrically conductive wires or filaments may be arranged in any suitable configuration. In some examples, the thermally and electrically conductive wires or filaments may be disposed as a mesh, e.g., woven in a mesh. A mesh may additionally provide electromagnetic interference (EMI) protection for electronic components in examples in which composite thermoelectric material10is used to form an electronics enclosure.

The matrix material may be the same or different as the matrix material in first and second structural reinforcement layers12and20. In some examples, the matrix material is continuous between first and second structural reinforcement layers12and20and first and second thermally and electrically conductive layers14and18to integrally join first and second structural reinforcement layers12and20and first and second thermally and electrically conductive layers14and18.

In some examples, rather than first and second thermally and electrically conductive layers14and18being distinct, separate layers from first and second structural reinforcement layers12and20, the thermally and electrically conductive material may be incorporated within first and second structural reinforcement layers12and20. For example, thermally and electrically conductive wires or filaments may be interwoven with a woven fiber of first and/or second structural reinforcement layers12and20. Further, although the example illustrated inFIG. 1includes two thermally and electrically conductive layers14and18, in other examples, a composite thermoelectric material may include more or fewer layers of thermally and electrically conductive material.

Fibrous thermoelectric material layer16is disposed between and in contact with thermally and electrically conductive layers14and18. Fibrous thermoelectric material layer16may include a fibrous thermoelectric material. The fibrous thermoelectric material may include, for example, a thermoelectric polymer or a combination of thermoelectric polymers. The thermoelectric polymer may be an n-type thermoelectric polymer, a p-type thermoelectric polymer, or fibrous thermoelectric material layer16may include both an n-type thermoelectric polymer and a p-type thermoelectric polymer. As one specific example, the fibrous thermoelectric material may include a fabric including fibers including poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate). The fibers may consist of the thermoelectric polymer, may include a core coated with the thermoelectric polymer, or the like. In some examples, the cross-section of the fibers may be on a scale of nanometers (e.g., between about 1 nanometer and about 1,000 nanometers).

The thermoelectric polymer(s) may be shaped as a fiber or plurality of fibers, and the fibers arranged in a unidirectional fiber layup, a mesh, a weave, a braid, or the like. The unidirectional fiber layup, mesh, weave, braid or the like may include a single thermoelectric polymer, e.g., a single n-type thermoelectric polymer or a single p-type thermoelectric polymer, or may include multiple thermoelectric polymers, e.g., at least one n-type thermoelectric polymer and at least one p-type thermoelectric polymer. In some examples, fibrous thermoelectric material layer16may include a plurality of unidirectional fiber layups, meshes, weaves, braids, or combinations thereof. Each unidirectional fiber layup, mesh, weave, or braid may include a single thermoelectric polymer or multiple thermoelectric polymers (either of the same or a different type).

In some examples, the fibrous thermoelectric material is encapsulated in a matrix material. The matrix material may be the same or different as the matrix material for the other layers of composite thermoelectric material10. In other examples, the fibrous thermoelectric material is not encapsulated in a matrix material or is encapsulated in a different matrix material than the other layers of composite thermoelectric material10.

By including first and second structural reinforcement layers12and20, thermally and electrically conductive layers14and18, and fibrous thermoelectric material layer16, composite thermoelectric material10may function as a structural material and a heat transfer material. As such, composite thermoelectric material10may be used in applications in which both structural strength and heat transfer are desirable, such as electronics enclosures. For example, composite thermoelectric material10may be used to define at least one wall of an electronics enclosure (e.g., all walls of the electronics enclosure). First and second structural reinforcement layers12and20may provide structural strength to the walls of the enclosure to protect electronic components within the electronics enclosure and may transfer heat to and/or from thermally and electrically conductive layers14and18. Thermally and electrically conductive layers14and18may conduct heat to and/or from fibrous thermoelectric material layer16and may provide electrical connects to fibrous thermoelectric material layer16to enable the thermoelectric effect upon application of a current to fibrous thermoelectric material layer16. Fibrous thermoelectric material layer16may act as a heat pump to cause heat to flow from one side of fibrous thermoelectric material layer16to the other (e.g., from one of thermally and electrically conductive layers14and18to the other of thermally and electrically conductive layers14and18).

In some examples, a composite thermoelectric material10may include a different construction than that shown inFIG. 1. For example,FIG. 2is a conceptual diagram illustrating another composite thermoelectric material30in accordance with the disclosure. Composite thermoelectric material30may be similar to or the same as composite thermoelectric material10ofFIG. 1, aside from the differences described herein.

Like composite thermoelectric material10, composite thermoelectric material30includes a first and second structural reinforcement layers32and40. Composite thermoelectric material30also include thermally and electrically conductive layers and fibrous thermoelectric material layers. However, unlike composite thermoelectric material10, composite thermoelectric material30includes multiple domains or regions. In a first region, composite thermoelectric material30includes a first thermally and electrically conductive layer34A, a first fibrous thermoelectric material layer36A, and a second thermally and electrically conductive layer38A. In a second region, composite thermoelectric material30includes a third thermally and electrically conductive layer34B, a second fibrous thermoelectric material layer36B, and a fourth thermally and electrically conductive layer38B. The first and second regions are separated by material42.

The first and second regions may be electrically separated from each other by material42, such that currents may be applied to first thermally and electrically conductive layer34A, first fibrous thermoelectric material layer36A, and second thermally and electrically conductive layer38A independently from third thermally and electrically conductive layer34B, second fibrous thermoelectric material layer36B, and fourth thermally and electrically conductive layer38B. As such, the first region (e.g., first thermally and electrically conductive layer34A, second thermally and electrically conductive layer38A, or both) may be electrically coupled to a different current source than the second region (e.g., third thermally and electrically conductive layer34B, fourth thermally and electrically conductive layer38B, or both). This allows independent control of heat flow through the first region and the second region. Such independent control may be desirable to allow independent control of cooling of two different components adjacent to the first region and the second region, respectively.

Material42may be an electrically insulating material (e.g., a dielectric) to electrically isolate the first region from the second region. In some examples, material42may include the matrix material that encapsulates layers of composite thermoelectric material30.

Although two regions are shown inFIG. 2, composite thermoelectric material30may be divided into any number of regions (e.g., generally, a plurality of regions) to allow independent control of heat transfer in any number of regions of thermoelectric composite material30.

In some examples, a composite thermoelectric material may include additional layers (e.g., more than five layers). For example,FIG. 3is a conceptual diagram illustrating another composite thermoelectric material50in accordance with the disclosure. Composite thermoelectric material50may be similar to or the same as composite thermoelectric material10ofFIG. 1, aside from the differences described herein.

Like composite thermoelectric material10, composite thermoelectric material50includes a first and second structural reinforcement layers52and68. First and second structural reinforcement layers52and68are the outer layers of composite thermoelectric material50and define the outer major surfaces of composite thermoelectric material50.

Composite thermoelectric material50also includes a first thermally and electrically conductive layer54, a first fibrous thermoelectric material layer56, a second thermally and electrically conductive layer58, a second fibrous thermoelectric material layer60, a third thermally and electrically conductive layer62, a third fibrous thermoelectric material layer64, and a fourth thermally and electrically conductive layer66. Respective thermally and electrically conductive layers interleave or alternate with respective fibrous thermoelectric material layers. Any number of thermally and electrically conductive layers may interleave or alternate with any number of respective fibrous thermoelectric material layers. By including a plurality of thermally and electrically conductive layers interleaved or alternating with respective fibrous thermoelectric material layers, a heat transfer capacity may be increased.

FIG. 4is a conceptual diagram illustrating another composite thermoelectric material70in accordance with the disclosure. Composite thermoelectric material70may be similar to or the same as composite thermoelectric material10ofFIG. 1, aside from the differences described herein.

Like composite thermoelectric material10, composite thermoelectric material70includes a first and second structural reinforcement layers72and84. First and second structural reinforcement layers72and84are the outer layers of composite thermoelectric material70and define the outer major surfaces of composite thermoelectric material70.

Composite thermoelectric material70also includes a first thermally and electrically conductive layer74, a second thermally and electrically conductive layer76, a fibrous thermoelectric material layer78, a third thermally and electrically conductive layer80, and a fourth thermally and electrically conductive layer82. First and second thermally and electrically conductive layers74and76are between first structural reinforcement layer72and fibrous thermoelectric material layer78. Third and fourth thermally and electrically conductive layers80and82are between fibrous thermoelectric material layer78and second structural reinforcement layer84. Fibrous thermoelectric material layer78is between first and second thermally and electrically conductive layers74and76on one side and third and fourth thermally and electrically conductive layers80and82on the other side.

By including additional thermally and electrically conductive layers, a current density provided to fibrous thermoelectric material layer78may be increased, which may increase cooling and/or heating capacity of composite thermoelectric material70. Although composite thermoelectric material70is illustrated as being symmetrical, with the same number of thermally and electrically conductive layers on either side of fibrous thermoelectric material layer78, in other examples, more thermally and electrically conductive layers may be provided on one side of fibrous thermoelectric material layer78than on the other side of fibrous thermoelectric material layer78.

AlthoughFIGS. 1-4illustrate different examples of a composite thermoelectric material, any of the features of composite thermoelectric materials10,30,50, and70may be combined in any combination. For example, a composite thermoelectric material may include multiple regions, as shown inFIG. 2, and each of the regions may be selected from the configurations shown inFIGS. 1-4. The configuration of one region may be the same or different from any other region. As another example, the alternating layers concept ofFIG. 3may be combined with the multiple thermally and electrically conductive layers shown inFIG. 4, such that there may be two or more thermally and electrically conductive layers directly adjacent to each other in a thermally and electrically conductive layer set, and the thermally and electrically conductive layer set may be interleaved with or alternating with fibrous thermoelectric material layers. Other combinations will be apparent to those having ordinary skill in the art and are within the scope of this disclosure.

As described above, in some examples, composite thermoelectric materials10,30,50, and70may be used to form walls of an enclosure or chassis, such as an electronics enclosure.FIG. 5is a conceptual diagram illustrating an example electronics enclosure including walls formed from a composite thermoelectric material.

FIG. 5illustrates an electronics system90that includes an electronics enclosure92including walls94A-94D (collectively, “walls94”). Walls94together define an enclosed internal volume96within electronics enclosure92. An electronic component104is disposed within internal volume96of electronics enclosure92. Electronics enclosure92may define a substantially closed space that separates electronic component104from the external environment and protects electronic component104from physical damage, the surrounding environmental conditions, or the like.

At least one of walls94may include a composite thermoelectric material, such as one or more of composite thermoelectric materials10,30,50, or70. In some examples, each of walls94includes a composite thermoelectric material. The composition of each of walls94may be the same, or the composition of one or more of walls94may be different than one or more other of walls94. For example, wall94D may include a structure and composition like composite thermoelectric material70ofFIG. 4while walls94A-94C include a structure and composition like composite thermoelectric material10ofFIG. 1. Other combinations will apparent to those having ordinary skill in the art and are within the scope of this disclosure.

One or more of walls94may define an aperture that is sized and configured to receive a connector98. For example, wall94A defines an aperture that is sized and configured to receive a connector98. Connector98may include electrical connections to allow power and communication connections between electronic component104and an external device. In some examples, connector98communication connections100and power connections102. Connector98may include any suitable number of connections, and the connections may comply with any suitable communications protocol and/or connector standard. Communication connections100and power connections102connect to electronic component104.

Electronic component104may be any active or passive electronic component. In some examples, electronic component104includes a plurality of electronic components, e.g., mounted to a printed board. For example, electronic component104may include a processor or processing circuitry such as any one or more of a microprocessor, a controller, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or equivalent discrete or integrated logic circuitry. Electronic component104may include processing circuitry106configured to control operation of composite thermoelectric material within walls94. For example, processing circuitry106may be configured to receive power via power connections102and provide the power as electric current to thermally and electrically conductive layers within walls94. In some examples, processing circuitry106may be coupled to one or more thermal sensors positioned at one or more locations within electronics enclosure90. The thermal sensor(s) may be configured to measure a temperature of the location(s) at which the thermal sensor(s) is located. For example, a thermal sensor may be located at a location within internal volume96, a location within electronics component104(such as a junction or the like), or the like.

Processing circuitry106may be configured to receive a signal indicative of the measured temperature(s) and control operation of the composite thermoelectric material of walls94based on the received signal. For example, processing circuitry106may be configured to control the heat flow through composite thermoelectric material to maintain a temperature of internal volume96and/or need to keep electronic component104within a predetermined range, such as below about 125° C., such as between about −40° C. and about 100° C. Processing circuitry106may be configured to control a direction of heat flow (e.g., into internal volume96or out of internal volume96) by controlling a sign of the electrical current applied to walls94.

In some examples, walls94may include multiple regions, as shown inFIG. 2, and processing circuitry106may be configured to control respective regions of walls94based on respective signals received from respective thermal sensors. Such an arrangement may allow electronics system90to include different portions with different heat flow, such as different cooling rates. For example, processing circuitry106may control first, second, and third walls94A-94C to control internal environment96at a first rate and control fourth wall94D to cool electronic component104at a second rate greater or less than the first rate.

Electronic component104may be thermally coupled to walls94directly or indirectly. For example, electronic component104may be in direct physical contact with wall94D. In some examples, a thermal interface material, such as a thermal paste or solder, may be present between electronic component104and wall94D to facilitate heat transfer between electronic component104and wall94D, and vice versa. As another example, electronic component104may be thermally coupled to wall94C via one or more heat exchanger110, such as a vapor chamber, a heat pipe, or the like.

In some examples, electronics system90and electronics enclosure92may be implemented in a gas turbine engine.FIG. 6is a conceptual diagram illustrating an example gas turbine engine that includes an electronics enclosure including a composite thermoelectric material. Gas turbine engine110may be a main propulsion engine of an aircraft, marine vehicle, or the like. Although described herein as with respect to an aircraft propulsion system, in other examples, gas turbine engine110may be part of a propulsion system for providing propulsive thrust to any type of gas turbine engine powered vehicle, as discussed above, configured to provide power to a generator, or configured to provide power any suitable nonvehicle system including gas turbine engine20.

Engine110is a primary propulsion engine that provides thrust for flight operations of the aircraft. In some examples, engine110is a two-spool engine having a high pressure (HP) spool112and a low pressure (LP) spool114. In other examples, engine110may include three or more spools, e.g., may include an intermediate pressure (IP) spool and/or other spools. In some examples, engine110is a turbofan engine, wherein LP spool114is operative to drive a propulsor in the form of a turbofan (fan) system28. In other examples, engine20may not include a LP spool or fan system116. In some examples, engine110may include any suitable turbine powered-engine propulsion system, including but not limited to, a turbojet engine or a turboprop engine.

As illustrated inFIG. 6, engine110includes a fan system116in fluid communication with a bypass duct118and a compressor system120. A diffuser122is in fluid communication with compressor system120. A combustion system124is fluidically disposed between compressor system120and a high pressure (HP) turbine system126(e.g., disposed between compressor system120and HP turbine system126such that air or another fluid may flow from compressor system120to combustion system124to HP turbine system126). In some examples, combustion system124includes a combustion liner (not shown) that encloses a continuous combustion process. In other examples, combustion system124may take other forms, and may be, for example, a wave rotor combustion system, a rotary valve combustion system, a pulse detonation combustion system, or a slinger combustion system, and may employ deflagration and/or detonation combustion processes. A low pressure (LP) turbine system128is fluidically disposed between HP turbine system38and a nozzle130A configured to discharge a core flow of engine110(e.g., disposed between HP turbine system126and nozzle130A such that air or another fluid may flow from HP turbine system126to LP turbine system128to nozzle130A). A nozzle130B is in fluid communication with bypass duct128, and operative to transmit a bypass flow generated by fan system116around the core of engine110. In other examples, other nozzle arrangements may be employed, e.g., a common nozzle for core and bypass flow; a nozzle for core flow, but no nozzle for bypass flow; or another nozzle arrangement.

Fan system116includes a fan rotor system136having one or more rotors (not shown) that are driven by LP spool114of LP turbine system128. Fan system116may include one or more vanes (not shown). Compressor system120includes a compressor rotor system138. In some examples, compressor rotor system138includes one or more rotors (not shown) that are powered by HP turbine system126. High pressure turbine system126includes a first turbine rotor system140. First turbine rotor system140includes one or more rotors (not shown) operative to drive compressor rotor system138. First turbine rotor system140is drivingly coupled to compressor rotor system138via a shafting system142. Low pressure turbine system128includes a second turbine rotor system144. Second turbine rotor system144includes one or more rotors (not shown) operative to drive fan rotor system136. Second turbine rotor system144is drivingly coupled to fan rotor system136via a shafting system146. Shafting systems142and146include a plurality of shafts that may rotate at the same or different speeds and directions. In some examples, only a single shaft may be employed in one or both of shafting systems142and146. Turbine system128is operative to discharge the engine110core flow to nozzle130A.

During normal operation of gas turbine engine110, air is drawn into the inlet of fan system116and pressurized by fan rotor system136. Some of the air pressurized by fan rotor system136is directed into compressor system120as core flow, and some of the pressurized air is directed into bypass duct128as bypass flow. Compressor system120further pressurizes the portion of the air received therein from fan system116, which is then discharged into diffuser122. Diffuser122reduces the velocity of the pressurized air, and directs the diffused core airflow into combustion system124. Fuel is mixed with the pressurized air in combustion system124, which is then combusted. The hot gases exiting combustion system124are directed into turbine systems126and128, which extract energy in the form of mechanical shaft power to drive compressor system120and fan system116via respective shafting systems142and146.

In some examples, engine110may include an electronics enclosure148. Electronics enclosure148may enclose electronics component, such as a full authority digital engine controller (FADEC) or the like. The electronics component may control operation of one or more components of engine110, overall operation of engine110, or the like. Electronics enclosure148may be similar to or the same as electronics enclosure90ofFIG. 5. Electronics enclosure148may enclose the electronics component and protect the electronics component from the environment of engine110, e.g., heat, vibration, mechanical shocks, or the like.