Parameter measuring device for composite material air inlet channel

Abstract

The invention relates to the technical field of aviation auxiliary power device air inlet channel parameter measurement, and discloses a composite material air inlet channel parameter measurement device, which comprises an installation positioning piece, a composite material air inlet channel parameter measurement device, a composite material air inlet channel parameter measurement device, a composite material air inlet channel parameter measurement device and a composite material air inlet channel parameter measurement device, and is characterized in that the installation positioning piece is matched with an outlet of an air inlet channel in shape; the supporting rod assembly is fixedly installed on the installation positioning piece, the supporting rod assembly is suitable for extending in the radial direction of the air inlet channel outlet, the supporting rod assembly penetrates through the installation positioning piece, a monitoring assembly and an external connector are arranged on the supporting rod assembly, the monitoring assembly is arranged on the inner side of the installation positioning piece, and the external connector is arranged on the outer side of the installation positioning piece; the monitoring assembly is in communication connection with the external connector. The installation positioning piece is arranged at the outlet of the air inlet channel, and the supporting rod assembly with the monitoring assembly is fixedly installed through the installation positioning piece, so that the situation that the monitoring assembly is directly installed on the surface of the composite material air inlet channel to implement destructive connection operation can be avoided, and the monitoring assembly can directly stretch into the outlet of the air inlet channel to conduct parameter measurement.

Description

A composite material inlet parameter measuring device Technical Field

[0001] This invention relates to the field of air intake parameter measurement technology for aviation auxiliary power units, and specifically to a composite material air intake parameter measurement device. Background Technology

[0002] In the development and testing of aero engines, especially auxiliary power units, airflow parameters such as total temperature, total pressure, and static pressure in the inlet are key data for performance evaluation and inlet distortion analysis. Accurately obtaining these parameters is crucial for optimizing engine design and ensuring operational safety and reliability.

[0003] Current technologies for measuring airflow parameters in air intakes typically rely on drilling measurement holes in the air intake wall and welding metal mounting bases to fix single-support cantilever beam probes to the bases for measurement. The probes are bolted in place, resulting in a simple structure. However, with the aerospace industry's continuous pursuit of weight reduction, corrosion resistance, and high performance, composite materials, due to their lightweight, high specific strength, and fatigue resistance, are increasingly widely used in components such as air intakes. When air intakes are made of composite materials, their surfaces cannot be welded like metal, rendering traditional probe fixing methods based on welded mounting bases unsuitable. If alternative fixing methods such as adhesives are used, it is difficult to guarantee the connection strength and reliability under engine operating vibration environments. Furthermore, conventional single-support long probe structures themselves suffer from insufficient stiffness, susceptibility to vibration interference, significant disturbance to the intake airflow field, and limitations in the placement of measurement points. Summary of the Invention

[0004] In view of this, the present invention provides a composite material inlet parameter measuring device to solve the problem that the inlet airflow parameter measuring device in the prior art cannot be directly installed on the composite material inlet.

[0005] This invention provides a composite material inlet parameter measuring device, comprising:

[0006] The mounting positioning component is adapted to the shape of the intake duct outlet and is suitable for overlapping installation at the intake duct outlet. The support rod assembly is fixedly installed on the mounting positioning component and is suitable for extending radially along the intake duct outlet. The support rod assembly passes through the mounting positioning component and is equipped with a monitoring component and an external connector. The monitoring component is located inside the mounting positioning component, and the external connector is located outside the mounting positioning component. The monitoring component and the external connector are connected for communication.

[0007] During the installation of the composite material inlet duct parameter measurement device, a matching mounting and positioning component is fixed at the outlet of the composite material inlet duct. This allows the monitoring component on the support rod assembly to extend into the inlet duct, directly contacting the airflow and collecting parameters such as temperature and pressure. The monitoring signal is transmitted via a wire passing through the support rod assembly to an external connector located outside the mounting and positioning component. External data acquisition equipment then uses this connector to transfer the signal and read the data. By setting the mounting and positioning component at the inlet duct outlet and using it to fix the support rod assembly with the monitoring component, destructive welding or bonding operations that would otherwise be required to directly install the monitoring component on the surface of the composite material inlet duct are avoided. Furthermore, the monitoring component can be directly inserted into the inlet duct outlet for parameter measurement.

[0008] In one alternative implementation, the monitoring component includes a static pressure monitoring element and a total pressure monitoring element, both of which are arranged parallel to the circumferential direction of the intake outlet.

[0009] The static pressure monitoring unit is used to measure the static pressure parameters of the airflow, while the total pressure monitoring unit is used to measure the total pressure parameters of the airflow. By simultaneously setting up both static and total pressure monitoring units, the static and total pressure parameters of the airflow can be acquired synchronously, providing complete pressure data for performance calculations. The static and total pressure monitoring units are arranged parallel to the circumferential direction of the inlet outlet, ensuring that the attitude of the monitoring components is coordinated with the airflow direction, reducing interference with the airflow, and improving measurement accuracy.

[0010] In one alternative embodiment, the monitoring assembly further includes a temperature monitoring element arranged in parallel with the static pressure monitoring element.

[0011] Temperature monitoring devices are used to measure the total temperature parameter of the airflow. The temperature monitoring devices are arranged in parallel with the static pressure monitoring devices, forming a complete temperature and pressure monitoring system together with the static pressure and total pressure monitoring devices. This enables simultaneous measurement of multiple parameters of the airflow, including total temperature, static pressure, and total pressure, meeting the data requirements for intake distortion analysis in performance calculations.

[0012] In one optional embodiment, a monitoring lead wire is connected to the tail of the monitoring component, and the other end of the monitoring lead wire is connected to an external connector. A monitoring lead wire groove is provided on the support rod assembly, and the monitoring lead wire groove extends along the length of the support rod assembly. The monitoring lead wire is arranged along the monitoring lead wire groove.

[0013] The monitoring lead wires transmit the signals collected by the monitoring components to the external connectors. The monitoring lead wires are arranged along the monitoring lead wire slots, ensuring an orderly path within the support assembly and preventing them from scattering and drifting in the airflow, thus reducing interference with the intake flow field. The monitoring lead wire slots also provide a protective channel for the monitoring lead wires, preventing them from wearing down or breaking due to vibration or airflow impact, thereby improving signal transmission reliability.

[0014] In one alternative embodiment, the monitoring lead slot is filled with an encapsulation layer that secures the monitoring lead wire within the monitoring lead slot.

[0015] The encapsulation layer fixes the monitoring lead wire in the monitoring lead wire groove, making the monitoring lead wire and the support rod assembly an integrated structure, enhancing the vibration resistance of the monitoring lead wire, and preventing the monitoring lead wire from loosening or breaking in a vibration environment.

[0016] In one alternative embodiment, a substrate lead groove is provided on the mounting positioning member, the substrate lead groove extends along the side wall of the mounting positioning member and communicates with the monitoring lead groove.

[0017] The monitoring lead wires gathered from the monitoring lead wire slots of the support rod assembly, turn into and extend along the path of the base plate lead wire slots when passing through the mounting positioning component, so that the monitoring lead wires can be orderly led out from the support rod assembly through the mounting positioning component to the external connector, avoiding the monitoring lead wires of different monitoring components from getting tangled and messy, and realizing the independent lead-out of different monitoring lead wires to the corresponding external connectors.

[0018] In one optional embodiment, the mounting positioning member has a support rod mounting groove, the width of which is not less than the width of the support rod assembly. The support rod assembly is embedded in the support rod mounting groove, which extends through the mounting positioning member. A fastener is installed in the support rod mounting groove, and the fastener abuts and fixes against the support rod assembly.

[0019] The support rod mounting slot is wide enough to accommodate the support rod assembly and allows for fine-tuning of its lateral position within a certain range. Fasteners, screwed into the mounting slot from the side or bottom, create friction or compressive forces by pressing their ends tightly against the sidewall or bottom of the support rod assembly. This securely locks the support rod assembly in its predetermined position within the mounting slot, ensuring its stability under high-speed airflow impact and vibration loads, preventing it from swaying or falling off, and thus guaranteeing the spatial positioning accuracy and measurement stability of the monitoring component.

[0020] In one alternative embodiment, a fastening mounting position is provided in the support rod mounting groove, with one end of the fastener abutting against the inner wall of the fastening mounting position and the other end abutting against the support rod assembly.

[0021] The fastening mounting position provides a stable fulcrum for the fastener, allowing the fastener to abut against the inner wall of the support rod mounting groove and apply a fixing force to the support rod assembly. This prevents the support rod assembly from lateral displacement under vibration or airflow impact, thus improving the installation stability of the support rod assembly.

[0022] In one optional embodiment, a total pressure rectifier is fitted onto the total pressure monitoring device, allowing the airflow to enter the device smoothly after rectification, reducing the impact of airflow separation and eddies on total pressure measurement and improving the accuracy of the measurement. Simultaneously, the total pressure rectifier also protects the monitoring device from direct impact by foreign objects, preventing damage.

[0023] In one optional embodiment, a temperature stagnation shroud is fitted onto the temperature monitoring device. When a high-speed airflow approaches, the shroud guides the airflow through its front opening into the internal cavity, significantly slowing and stagnating the airflow within the cavity. This forces the flowing airflow to slow down sufficiently to near rest before measurement, maximizing the conversion of the airflow's kinetic energy into heat energy. Consequently, the temperature monitoring device can sense the true total temperature of the airflow, effectively eliminating measurement errors caused by airflow velocity.

[0024] In one optional embodiment, the mounting positioning component includes an annular mounting portion and a mating mounting edge. The support rod assembly is mated with the annular mounting portion, the mating mounting edge is located at the edge of the annular mounting portion, and mounting components are provided on the annular mounting portion. The mounting components are arranged in a one-to-one correspondence with the mating components at the air intake outlet.

[0025] The main body of the mounting and positioning component is an annular mounting portion that matches the shape of the inner ring of the air intake outlet. The support rod mounting groove and the base plate lead wire groove are both located on the annular mounting portion. An annular mating mounting edge extends from the outer edge of the annular mounting portion, and this mating mounting edge is used to mate with the end face or flange of the air intake outlet. On the mating mounting edge, through holes or embedded parts are made at positions that perfectly correspond to the existing mounting holes at the air intake outlet, serving as mating parts. During installation, bolts are used to sequentially pass through the mounting parts on the mating mounting edge and the mating parts at the air intake outlet to clamp and fix the entire mounting and positioning component. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 is a schematic diagram of the composite material inlet parameter measuring device provided in an embodiment of the present invention.

[0028] Figure 2 is a structural schematic diagram of the installation positioning component provided in an embodiment of the present invention.

[0029] Figure 3 is a schematic diagram of the structure of the central support rod and the monitoring component installed together according to an embodiment of the present invention.

[0030] Figure 4 is a schematic diagram of the structure of the external support plate and the external connector provided in the embodiment of the present invention.

[0031] Figure 5 is a schematic diagram of the structure of the central support rod and another monitoring component provided in an embodiment of the present invention.

[0032] Figure 6 is a schematic diagram of the structure of the external support plate provided in the embodiment of the present invention and another external connector being installed together.

[0033] Explanation of reference numerals in the attached drawings: 1. Mounting positioning component; 101. Annular mounting part; 1011. Support rod mounting groove; 1012. Substrate lead groove; 1031-1013. Fastening mounting position; 102. Mating mounting edge; 1021. Mounting component; 2. Support rod assembly; 201. Central support rod; 202. External support plate; 3. Monitoring assembly; 301. Static pressure monitoring component; 302. Total pressure monitoring component; 303. Temperature monitoring component; 304. Total pressure rectifier; 305. Temperature stagnation cover; 4. Monitoring lead wire; 5. External connector; 501. Pneumatic pin; 502. Thermocouple socket. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] The embodiments of the present invention are described below with reference to Figures 1 to 6.

[0036] According to an embodiment of the present invention, a composite material inlet parameter measuring device is provided for measuring parameters of composite material inlets in aviation auxiliary power units, which can effectively collect airflow parameters inside the inlet without damaging the main structure of the composite material inlet.

[0037] The composite material intake duct parameter measuring device includes a mounting and positioning component 1, a support rod assembly 2, and a monitoring assembly 3. The overall configuration of the mounting and positioning component 1 is adapted to the outlet shape of the intake duct, and the geometric contour of the mounting and positioning component 1 is consistent with the shape of the intake duct outlet end face. The mounting and positioning component 1 is overlapped and installed at the outlet of the intake duct, and is attached to the intake duct outlet end face through surface contact.

[0038] The support rod assembly 2 is fixedly installed on the mounting positioning part 1. The installation direction of the support rod assembly 2 extends radially along the air intake outlet. The support rod assembly 2 passes through the mounting positioning part 1. A part of the support rod assembly 2 is located inside the mounting positioning part 1, and another part of the support rod assembly 2 is located outside the mounting positioning part 1. The support rod assembly 2 is provided with a monitoring component 3 and an external connector 5. The monitoring component 3 is arranged in the area of ​​the support rod assembly 2 located inside the mounting positioning part 1, and the external connector 5 is arranged in the end area of ​​the support rod assembly 2 located outside the mounting positioning part 1. The monitoring component 3 and the external connector 5 establish an electrical signal communication connection through a wire, and at the same time, the air pressure signal is transmitted through a stainless steel pipe.

[0039] During the installation of the composite material inlet duct parameter measuring device, a matching mounting positioning component 1 is installed and fixed at the outlet end face of the composite material inlet duct. The mounting positioning component 1 and the outlet end face of the composite material inlet duct form a stable overlap. The support rod assembly 2 extends radially inward along the outlet of the inlet duct. The monitoring component 3 on the support rod assembly 2 extends into the internal flow channel of the inlet duct along with the support rod assembly 2. The monitoring component 3 directly contacts the airflow and collects parameters such as temperature and pressure. The monitoring signal is transmitted to the external connector 5 located outside the mounting positioning component 1 via a wire and conduit wire passing through the support rod assembly 2. The external data acquisition equipment realizes signal conversion and data reading by connecting to the external connector 5, completing the entire measurement process. By setting the mounting positioning component 1 at the outlet of the inlet duct and using the mounting positioning component 1 to fix the support rod assembly 2 with the monitoring component 3, it is possible to avoid the destructive welding or bonding operation of directly installing the monitoring component 3 on the surface of the composite material inlet duct, and to allow the monitoring component 3 to directly extend into the outlet of the inlet duct for parameter measurement.

[0040] In one embodiment, the monitoring component 3 includes a static pressure monitoring element 301 and a total pressure monitoring element 302, both of which are arranged parallel to the circumferential direction of the intake outlet.

[0041] Static pressure monitoring element 301 is used to measure the static pressure parameter of the airflow, and total pressure monitoring element 302 is used to measure the total pressure parameter of the airflow. Static pressure monitoring element 301 and total pressure monitoring element 302 can be tubular, cylindrical, or probe-shaped. The axial direction of static pressure monitoring element 301 and total pressure monitoring element 302 is consistent with the circumferential tangential direction of the air intake outlet, making the outer surface of static pressure monitoring element 301 and total pressure monitoring element 302 parallel to the airflow direction. The tail of both static pressure monitoring element 301 and total pressure monitoring element 302 is connected to the corresponding external connector 5 via monitoring lead-out line 4. In this embodiment, four sets of static pressure monitoring elements 301 and total pressure monitoring elements 302 are spaced apart along the length of the support rod assembly 2.

[0042] By simultaneously setting up static pressure monitoring component 301 and total pressure monitoring component 302, the composite material inlet parameter measuring device can synchronously acquire the static pressure and total pressure parameters of the airflow at the same measuring point, providing complete pressure data for the performance calculation of the aero-assisted power unit. The static pressure monitoring component 301 and total pressure monitoring component 302 are arranged parallel to the circumferential direction of the inlet outlet, ensuring that the overall attitude of the monitoring component 3 is coordinated with the airflow direction. This reduces the disturbance of the flow field by the monitoring component 3, lowers the measurement error caused by probe obstruction and vortex generation, and improves the accuracy of pressure measurement.

[0043] In this embodiment, the support rod assembly 2 includes two forms. One type of support rod assembly 2 has a monitoring component 3 including a static pressure monitoring element 301 and a total pressure monitoring element 302. The other type of support rod assembly 2 has a monitoring component 3 including a static pressure monitoring element 301, a total pressure monitoring element 302 and a temperature monitoring element 303. The temperature monitoring element 303 is arranged in parallel with the static pressure monitoring element 301.

[0044] Temperature monitoring element 303 is used to measure the total temperature parameter of the airflow. Temperature monitoring element 303 can be a thermocouple, resistance temperature detector (RTD), or other temperature sensor. Temperature monitoring element 303 is connected to monitoring lead 4 via thermocouple wire or compensating wire.

[0045] Temperature monitoring element 303 and static pressure monitoring element 301 are arranged in parallel, so that temperature monitoring element 303, static pressure monitoring element 301, and total pressure monitoring element 302 together form a complete temperature and pressure monitoring system in the end area of ​​the support rod assembly 2 located inside the mounting positioning element 1. This enables simultaneous measurement of multiple parameters such as total airflow temperature, static pressure, and total pressure at the same measuring point, meeting the data requirements for intake distortion analysis in the performance calculation of aero-assisted power units. The parallel arrangement of temperature monitoring element 303 and static pressure monitoring element 301 maintains the structural compactness of the monitoring assembly 3, avoiding space waste and mutual interference caused by multiple monitoring elements crossing or misaligning.

[0046] In this embodiment, each monitoring component 3 is individually connected to a monitoring lead wire 4 at its tail end. The other end of the monitoring lead wire 4 is connected to an external connector 5. The support rod assembly 2 is provided with a monitoring lead wire groove, which extends along the length of the support rod assembly 2. The monitoring lead wire 4 is arranged along the monitoring lead wire groove.

[0047] Specifically, the monitoring lead 4 includes a pressure-sensing tube and a thermocouple wire. The pressure-sensing tube is made of capillary nylon tubing, and the thermocouple wire is made of compensating wire or extension wire. Each static pressure monitoring component 301 and total pressure monitoring component 302 is connected to a pressure-sensing tube, and the temperature monitoring component 303 is connected to a thermocouple wire. The number of monitoring lead 4 corresponds to the number of measuring points in the monitoring assembly 3. A monitoring lead groove is formed on the support rod assembly 2. The monitoring lead groove extends from the inside of the mounting positioning component 1 to the position of the mounting positioning component 1 along the length direction of the support rod assembly 2. The monitoring lead groove can adopt a U-shaped groove, rectangular groove, or arc-shaped groove structure. The groove width of the monitoring lead groove is designed to be greater than the total diameter of all monitoring lead 4 when they are put together, and the groove depth is greater than the diameter of a single monitoring lead 4 and less than the wall thickness of the support rod assembly 2. After the monitoring lead wire 4 is led out from the tail of the monitoring component 3, it is arranged along the direction of the monitoring lead wire groove. The monitoring lead wire 4 is kept straight or slightly bent in the monitoring lead wire groove to avoid excessive bending or twisting of the monitoring lead wire 4.

[0048] The monitoring lead 4 transmits the pressure and temperature signals collected by the monitoring component 3 to the external connector 5, providing raw measurement signals for external data acquisition equipment. The monitoring lead 4 is arranged along the monitoring lead groove, ensuring an orderly path within the support assembly 2. This prevents the monitoring lead 4 from being exposed to the airflow and drifting aimlessly, reducing interference with the air intake flow field and lowering noise signals caused by vibration. The monitoring lead groove provides a closed protective channel for the monitoring lead 4, preventing wear and breakage due to high-speed airflow impact or mechanical vibration, ensuring the continuity and reliability of signal transmission, and extending the service life of the monitoring lead 4.

[0049] In this embodiment, the support rod assembly 2 includes a central support rod 201 fixedly connected in the middle and L-shaped external support plates 202 on both sides, forming a channel with an open top. The central support rod 201 and the external support plates 202 adopt a separate assembly structure. The central support rod 201 is an independent solid rod, and the external support plates 202 are two independent flat plates. The external support plates 202 are fixed to both sides of the central support rod 201 by bolts, and a detachable connection is formed between the external support plates 202 and the central support rod 201. Monitoring lead wire slots are respectively opened on the inner surface of the external support plates 202 and at corresponding positions on the central support rod 201. After the external support plates 202 and the central support rod 201 are assembled, the monitoring lead wire slots on both sides are joined to form a complete lead wire channel.

[0050] In this embodiment, the external connector 5 is a key interface component for the measuring device to transmit signals externally, and it adopts different specific forms depending on the physical properties of the signals to be transmitted. Specifically, the external connector 5 mainly includes a pneumatic pin 501 for transmitting pressure signals and a thermocouple socket 502 for transmitting temperature signals. The pneumatic pin 501 is a metal tubular connector, which is fixed to the preset mounting hole of the external support plate 202 by welding. The static pressure probe of the seat static pressure monitoring component 301 installed on the middle support rod 201 and the monitoring lead 4 connected to the total pressure probe inside the total pressure rectifier 304 of the total pressure monitoring component 302 are respectively connected to different pneumatic pins 501. The thermocouple socket 502 is a dedicated electrical connector. The body of the thermocouple socket 502 is fastened to the preset mounting hole on the external support plate 202 by bolts and nuts through its own mounting flange. The conductive terminals inside the thermocouple socket 502 are connected to the monitoring lead 4 of the thermocouple temperature sensing element inside the total temperature stagnation cover of the temperature monitoring element 303 on the central support rod 201.

[0051] In one embodiment, the monitoring lead groove is filled with an encapsulation layer, which fixes the monitoring lead 4 within the groove. The encapsulation layer can be epoxy resin, hot-dip mortar silicone rubber, or other polymer materials with adhesive and sealing properties. The encapsulation layer is injected into the monitoring lead groove in a liquid state, completely encapsulating the monitoring lead 4 and filling the entire space of the groove. The encapsulation process can employ vacuum injection or pressure injection to ensure that the encapsulation layer fully penetrates the gaps between the monitoring leads 4 and the gaps between the monitoring leads 4 and the inner wall of the monitoring lead groove. After curing, the encapsulation layer forms a tight bond with the monitoring lead 4 and the support assembly 2. The cured surface of the encapsulation layer is flush with or slightly recessed from the outer surface of the support assembly 2. The cured surface of the encapsulation layer can be polished to create a smooth, continuous curved surface on the outer surface of the support assembly 2.

[0052] The encapsulation layer firmly fixes the monitoring lead 4 within the monitoring lead groove, forming an integrated composite structure with the support rod assembly 2. This significantly enhances the vibration resistance of the monitoring lead 4, preventing it from loosening or fatigue fracture under the high-intensity vibration environment of aero-engine testing. The smooth surface formed after the encapsulation layer cures reduces the airflow resistance of the support rod assembly 2, lowers the additional air intake losses introduced by the measuring device, improves the aerodynamic performance of the support rod assembly 2, and also prevents the generation of separation vortices on the surface of the support rod assembly 2, reducing disturbance to the flow field.

[0053] In one embodiment, the mounting positioning member 1 has a substrate lead groove 1012, which extends along the side wall of the mounting positioning member 1 and is connected to the monitoring lead groove.

[0054] The substrate lead groove 1012 can adopt a rectangular cross-section groove, a trapezoidal cross-section groove, or a semi-circular cross-section groove structure. The substrate lead groove 1012 is arranged in a horizontal and vertical manner. The substrate lead groove 1012 starts from the support rod mounting groove 1011 and extends along the side wall of the mounting positioning member 1 to the outer edge of the mounting positioning member 1. The groove width of the substrate lead groove 1012 is designed to be greater than the total diameter of all monitoring leads 4 when they are put together. The groove depth of the substrate lead groove 1012 is greater than the diameter of a single monitoring lead 4 and less than the thickness of the mounting positioning member 1. The substrate lead groove 1012 and the monitoring lead groove form a smooth transition connection at the support rod mounting groove 1011. The connection uses a rounded or beveled transition to avoid excessive bending of the monitoring lead 4 at the turning point. The bundle of monitoring leads 4, which are gathered from the monitoring lead groove of the support rod assembly 2, enters the substrate lead groove 1012 when passing through the mounting positioning member 1 and extends along the path of the substrate lead groove 1012. The monitoring leads 4 of different monitoring assemblies 3 are kept separate or grouped in the substrate lead groove 1012. Each group of monitoring leads 4 branches along the independent substrate lead groove 1012 to the corresponding external connector 5.

[0055] The substrate lead groove 1012 is connected to the monitoring lead groove, forming a complete lead channel from the monitoring component 3 to the external connector 5. This allows the monitoring leads 4 to be orderly led out from the support assembly 2 through the mounting positioning member 1 to the external connector 5, preventing the monitoring leads 4 from crossing the airflow channel or being exposed to the air. The substrate lead groove 1012 enables independent routing of the monitoring leads 4 of different monitoring components 3, preventing them from becoming tangled and messy, avoiding signal interference and short circuit risks. It also enables independent routing of different monitoring leads 4 to their corresponding external connectors 5, improving the maintainability and reliability of the measurement system.

[0056] In one embodiment, the mounting positioning member 1 has a support rod mounting groove 1011. The width of the support rod mounting groove 1011 is not less than the width of the support rod assembly 2. The support rod assembly 2 is embedded in the support rod mounting groove 1011. The support rod mounting groove 1011 is provided through the mounting positioning member 1. Fasteners are installed in the support rod mounting groove 1011. The fasteners abut and fix the support rod assembly 2.

[0057] The support rod mounting groove 1011 can adopt a rectangular groove, U-shaped groove, or dovetail groove structure. The width of the support rod mounting groove 1011 is designed to be greater than the width of the support rod assembly 2, and the depth of the support rod mounting groove 1011 matches the thickness of the support rod assembly 2. The length direction of the support rod mounting groove 1011 extends radially along the mounting positioning member 1. The end of the support rod assembly 2 is embedded in the support rod mounting groove 1011, and the outer contour of the end of the support rod assembly 2 forms a clearance fit with the inner wall of the support rod mounting groove 1011. The support rod assembly 2 can achieve a slight adjustment of its lateral position within the support rod mounting groove 1011. The support rod mounting groove 1011 is provided through the mounting positioning member 1 in the thickness direction, so that the support rod assembly 2 can completely pass through the mounting positioning member 1 radially along the air intake. The fasteners can be positioning screws, set screws or wedge blocks. The fasteners are screwed into or inserted into the mounting holes opened in the side wall or bottom wall of the support rod mounting groove 1011. The end of the fastener forms an abutment contact with the side surface or bottom surface of the support rod assembly 2. The clamping force generated by tightening the fasteners securely locks the support rod assembly 2 in a predetermined position in the support rod mounting groove 1011.

[0058] The support rod assembly 2 is embedded in the support rod mounting groove 1011 and fixed by fasteners, forming a detachable embedded connection between the support rod assembly 2 and the mounting positioning component 1. This facilitates the replacement of support rod assemblies 2 of different lengths or configurations of monitoring components 3 according to measurement requirements. The support rod mounting groove 1011 extends through the mounting positioning component 1, ensuring that the support rod assembly 2 can radially penetrate the mounting positioning component 1 along the air intake, ensuring that the monitoring component 3 can penetrate deep into the air intake to obtain flow field parameters. The abutment fixing method between the fasteners and the support rod assembly 2 maintains the stability of the support rod assembly 2 under high-speed airflow impact and vibration loads, preventing the support rod assembly 2 from swinging or falling off, thereby ensuring the spatial position accuracy and measurement stability of the monitoring component 3.

[0059] In one embodiment, a fastening mounting position 10311013 is provided in the support rod mounting groove 1011, one end of the fastener abuts against the inner wall of the fastening mounting position 10311013, and the other end abuts against the support rod assembly 2.

[0060] The fastening mounting position 10311013 can be a countersunk hole or a limiting groove structure. The fastening mounting position 10311013 is formed on the side wall or bottom wall of the support rod mounting groove 1011, and its axial direction is perpendicular to the surface of the support rod assembly 2. The inner wall of the fastening mounting position 10311013 is provided with threads or limiting surfaces that match the fasteners. The fasteners can be hex socket screws, headless screws, or locating pins. One end of the fastener is screwed into or inserted into the fastening mounting position 10311013, and the end of the fastener abuts against the inner bottom or inner side surface of the fastening mounting position 10311013. The other end of the fastener extends out of the fastening mounting position 10311013 and abuts against the side wall or bottom wall of the support rod assembly 2. The magnitude of the abutment force on the support rod assembly 2 can be changed by adjusting the screwing depth of the fastener.

[0061] The fastening mounting position 10311013 provides a structured force application fulcrum for the fastener, enabling it to stably abut against the inner wall of the support rod mounting groove 1011 and apply a directional fixing force to the support rod assembly 2. The fastening mounting position 10311013 constrains the direction of action of the fastener, preventing it from tilting or loosening under vibration. The abutting fixing force applied to the support rod assembly 2 by the fastening mounting position 10311013 effectively prevents lateral displacement of the support rod assembly 2 under vibration or airflow impact, improving the installation stability and positional accuracy of the support rod assembly 2 on the mounting positioning component 1, and ensuring the spatial positional invariance of the monitoring component 3 during the measurement process.

[0062] In one embodiment, a total pressure rectifier 304 is fitted onto the total pressure monitoring component 302. The total pressure rectifier 304 can be cylindrical, conical, or streamlined. The front end of the total pressure rectifier 304 has an airflow inlet, and the rear end has an airflow outlet. A rectification chamber is formed inside the total pressure rectifier 304. The total pressure rectifier 304 is fitted onto the outside of the total pressure monitoring component 302 by welding, threaded connection, snap-fit ​​connection, or interference fit. The airflow outlet of the total pressure rectifier 304 is aligned with the airflow inlet of the total pressure monitoring component 302. The diameter of the airflow inlet of the total pressure rectifier 304 is larger than the diameter of the airflow outlet. The sidewall of the total pressure rectifier 304 has a vent hole, exhaust hole, or guide groove. When the airflow passes through the total pressure rectifier 304, the airflow undergoes a deceleration and stabilization process in the rectifier chamber. The eddies and disturbances in the airflow are suppressed and eliminated in the rectifier chamber. The rectified and stable airflow then enters the total pressure monitoring device 302 for pressure measurement. Part of the airflow is discharged through the vent hole to prevent backflow from forming in the rectifier chamber.

[0063] The total pressure shunting hood 304 pre-rectifies the airflow entering the total pressure monitoring element 302, ensuring a smooth flow and reducing interference from airflow separation and eddies in the total pressure measurement, thus improving the accuracy and stability of the measurement. The shunting hood 304 also provides physical protection for the total pressure monitoring element 302, preventing foreign objects, oil, or water droplets in the test environment from directly impacting and clogging it, thereby extending its service life. Furthermore, the rectification effect of the shunting hood 304 improves the flow field quality around the total pressure monitoring element 302, enabling it to obtain a measurement value closer to the true total pressure and reducing measurement uncertainty.

[0064] In one embodiment, a temperature stagnation shield 305 is fitted onto the temperature monitoring component 303. The temperature stagnation shield 305 can be a cylindrical, conical, or venturi-shaped structure with one open end. The open end of the temperature stagnation shield 305 faces the direction of the airflow, and the closed end of the temperature stagnation shield 305 is close to the temperature measuring end of the temperature monitoring component 303. A stagnation chamber is formed inside the temperature stagnation shield 305. The temperature stagnation shield 305 is fitted onto the outside of the temperature monitoring component 303 by welding, threaded connection, or interference fit. The diameter of the open end of the temperature stagnation shield 305 has an expanding or equal diameter relationship with the diameter of the stagnation chamber. The inner wall surface of the temperature stagnation shield 305 can be smoothed or have a micro-turbulence structure. When a high-speed airflow comes towards us, the temperature stagnation shroud 305 guides the airflow through the opening at its front end into the stagnation chamber. The geometry of the stagnation chamber causes the airflow to slow down and stagnate significantly within the chamber. The airflow speed gradually decreases to near zero speed, and the kinetic energy of the airflow is converted into heat energy to the maximum extent through the adiabatic compression process, raising the airflow temperature in the stagnation chamber to near the total airflow temperature. The temperature sensing end of the temperature monitoring device 303 senses the airflow temperature after stagnation, thereby obtaining the true total airflow temperature parameter.

[0065] The temperature stagnation shield 305 forces the airflow passing through the temperature monitoring element 303 to slow down to near-stationary status before measurement, maximizing the conversion of the airflow's kinetic energy into heat energy. This allows the temperature monitoring element 303 to sense the true total temperature of the airflow, effectively eliminating dynamic measurement errors caused by airflow velocity and improving the accuracy of total temperature measurement. The temperature stagnation shield 305 also protects the temperature monitoring element 303, preventing mechanical or thermal shock damage from direct impact of high-speed airflow on the temperature measuring tip, thus extending the service life of the temperature monitoring element 303. The stagnation effect of the temperature stagnation shield 305 enables the composite material inlet parameter measuring device to obtain consistent total temperature measurement results under different airflow velocity conditions, enhancing the environmental adaptability and measurement stability of the measuring device.

[0066] In one embodiment, the mounting positioning member 1 includes an annular mounting portion 101 and a mating mounting edge 102. The support rod assembly 2 is installed in conjunction with the annular mounting portion 101. The mating mounting edge 102 is located at the edge of the annular mounting portion 101. The annular mounting portion 101 is provided with a mounting member 1021, and the mounting member 1021 is arranged in a one-to-one correspondence with the mating member at the air intake outlet.

[0067] The main body of the mounting and positioning component 1 is an annular mounting portion 101 that matches the shape of the inner ring of the air intake outlet. The annular mounting portion 101 can be a rectangular or circular cross-section ring structure, and the outer diameter of the annular mounting portion 101 is consistent with the inner diameter of the air intake outlet. A support rod mounting groove 1011 and a substrate lead wire groove 1012 are both provided on the side wall of the annular mounting portion 101. The support rod mounting groove 1011 is radially through the annular mounting portion 101, and the substrate lead wire groove 1012 is formed along the surface of the side wall of the annular mounting portion 101. An annular mating mounting edge 102 extends from the outer edge of the annular mounting portion 101. The mating mounting edge 102 can be an integrally formed flange structure or a welded attached edge structure. The thickness of the mating mounting edge 102 is less than the thickness of the annular mounting portion 101. The mating mounting edge 102 is used to achieve planar contact and mating with the end face or flange of the air intake outlet. On the mating mounting edge 102, through holes, threaded holes, or pre-embedded threaded sleeves are opened at positions that correspond exactly to the original mounting holes at the intake outlet, which serve as mating parts. The hole diameter, hole spacing, and number of the mounting parts 1021 are consistent with the mating parts at the intake outlet.

[0068] During installation, bolts, screws, or quick-release pins are used to pass through the mounting piece 1021 on the mounting edge 102 and the mounting piece at the intake outlet in sequence. A sealing gasket or sealant can be installed between the mounting edge 102 and the intake outlet end face. The clamping force generated by tightening the bolts will firmly clamp and fix the entire mounting positioning piece 1 at the intake outlet end face position.

[0069] The annular mounting section 101 provides a structured mounting base for the support rod assembly 2. Together with the mounting edge 102, it allows the mounting positioning component 1 to achieve a large-area fit with the intake duct outlet end face. The mounting component 1021 is arranged one-to-one with the mating components at the intake duct outlet, enabling the mounting positioning component 1 to be integrally installed at the intake duct outlet via end-face connection. This avoids welding or bonding operations on the composite material intake duct surface, protecting the integrity and ply continuity of the composite material structure. The annular structure of the mounting positioning component 1 not only meets the installation strength requirements of the support rod assembly 2 but also achieves a sealed connection with the intake duct outlet, preventing airflow leakage from the installation gap and improving the installation reliability and aerodynamic performance of the measuring device.

[0070] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A composite material inlet parameter measuring device, characterized in that, include: The mounting positioning component (1) is adapted to the shape of the air intake outlet and is suitable for overlapping installation at the air intake outlet; the support rod assembly (2) is fixedly installed on the mounting positioning component (1) and is suitable for extending radially along the air intake outlet. The support rod assembly (2) is installed through the mounting positioning component (1) and is provided with a monitoring component (3) and an external connector (5). The monitoring component (3) is located inside the mounting positioning component (1) and the external connector (5) is located outside the mounting positioning component (1). The monitoring component (3) and the external connector (5) are connected in communication.

2. The composite material inlet parameter measuring device according to claim 1, characterized in that, The monitoring component (3) includes a static pressure monitoring element (301) and a total pressure monitoring element (302), both of which are arranged parallel to the circumferential direction of the intake outlet.

3. The composite material inlet parameter measuring device according to claim 2, characterized in that, The monitoring component (3) further includes a temperature monitoring element (303), which is arranged in parallel with the static pressure monitoring element (301).

4. The composite material inlet parameter measuring device according to any one of claims 1 to 3, characterized in that, The monitoring component (3) is connected to a monitoring lead wire (4) at its tail end. The other end of the monitoring lead wire (4) is connected to the external connector (5). The support rod assembly (2) is provided with a monitoring lead wire groove. The monitoring lead wire groove extends along the length direction of the support rod assembly (2). The monitoring lead wire (4) is arranged along the monitoring lead wire groove.

5. The composite material inlet parameter measuring device according to claim 4, characterized in that, The monitoring lead groove is filled with an encapsulation layer, which fixes the monitoring lead (4) in the monitoring lead groove.

6. The composite material inlet parameter measuring device according to claim 4, characterized in that, The mounting positioning component (1) has a substrate lead groove (1012) which extends along the side wall of the mounting positioning component (1) and is connected to the monitoring lead groove.

7. The composite material inlet parameter measuring device according to any one of claims 1 to 3, characterized in that, The mounting positioning component (1) has a support rod mounting groove (1011) with a width not less than the width of the support rod assembly (2). The support rod assembly (2) is embedded in the support rod mounting groove (1011). The support rod mounting groove (1011) is provided through the mounting positioning component (1). Fasteners are installed in the support rod mounting groove (1011) and are abutted and fixed to the support rod assembly (2).

8. The composite material inlet parameter measuring device according to claim 7, characterized in that, The support rod mounting groove (1011) is provided with a fastening mounting position (10311013). One end of the fastener abuts against the inner wall of the fastening mounting position (10311013), and the other end abuts against the support rod assembly (2).

9. The composite material inlet parameter measuring device according to claim 2 or 3, characterized in that, A total pressure rectifier (304) is fitted onto the total pressure monitoring component (302).

10. The composite material inlet parameter measuring device according to any one of claims 1 to 3, characterized in that, The mounting and positioning component (1) includes an annular mounting part (101) and a mating mounting edge (102). The support rod assembly (2) is installed in conjunction with the annular mounting part (101). The mating mounting edge (102) is located at the edge of the annular mounting part (101). The annular mounting part (101) is provided with a mounting component (1021). The mounting component (1021) is arranged in a one-to-one correspondence with the mating component at the air intake outlet.

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