CN117147090B - Device and method for adjusting position and posture of pressure measuring rail in acoustic explosion test - Google Patents
Device and method for adjusting position and posture of pressure measuring rail in acoustic explosion test Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 104
- 238000004880 explosion Methods 0.000 title claims abstract description 34
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- 230000001154 acute effect Effects 0.000 claims description 6
- 238000009530 blood pressure measurement Methods 0.000 description 31
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a device and a method for adjusting the position and the posture of a pressure measuring rail in a sonic boom test, and aims to solve the problems of poor accuracy and reliability of sonic boom measurement results caused by mismatching and inaccuracy of the relative spatial positions of a test model and the pressure measuring rail when the sonic boom test is carried out in a large supersonic wind tunnel. The adjusting device comprises a model reference platform and a pressure measuring rail reference platform; the model reference platform comprises a first arc-shaped connecting portion, a first horizontal connecting portion and a first vertical connecting portion, wherein a first arc-shaped groove is formed in the first arc-shaped connecting portion, and the first arc-shaped connecting portion, the first vertical connecting portion and the first horizontal connecting portion are connected into a whole. The method provided by the invention can be applied to a supersonic wind tunnel, and the device and the method can be used for realizing good matching of the relative positions of the pressure measuring rail and the test model, so that the acoustic explosion signal measurement result with higher accuracy and reliability can be obtained, and the method has important significance for improving the accuracy of the test result.
Description
Technical Field
The application relates to the technical field of aviation wind tunnel tests, in particular to a device and a method for adjusting the position and the posture of a pressure measuring rail in an acoustic explosion test.
Background
FIG. 1 shows a schematic view of the installation position of an acoustic explosion test device in a wind tunnel based on a pressure rail. The test model is arranged on the position and angle control mechanism of the wind tunnel through the support rod, so that the spatial position and posture change of the model are realized. The pressure measuring rail is arranged on the wind tunnel wall plate and is not limited to the lower wall plate shown in the schematic drawing. The typical pressure measuring rail is in a strip shape, and the cross section of the pressure measuring rail is in a trapezoid shape with a narrow upper part and a wide lower part (as shown in fig. 3). The central lines at the top ends of the pressure measuring rails are uniformly provided with pressure measuring holes with different numbers along the airflow direction. When the airflow environment in the wind tunnel is supersonic, the model generates wave systems as shown in the figure, and the wave systems can be transmitted to a far distance from the position of the test model; when the pressure sensor propagates to the top end of the pressure measuring rail, the pressure change brought by the pressure sensor is captured by the pressure measuring holes arranged along the air flow direction, and after certain data processing, the obtained result is the acoustic explosion signal of the test model under the given attitude condition and at a certain height position from the pressure measuring rail.
In order to study the rule of propagation of the test model wave system to a far distance, the distance between the test model and the pressure measuring rail needs to be adjusted during the acoustic explosion test so as to realize acoustic explosion signal simulation at different heights. It will be readily appreciated that as the model moves from a position closer to the load rail to a position farther away, the model wave train propagates downstream in the direction of airflow to the corresponding load port at the tip of the load rail. In order to achieve the best possible test model and capture of the acoustic burst signal during the high simulation of the pressure rail, the dimensions of the pressure rail in the direction of the air flow need to be increased.
The main measurement of the pressure measuring rail is the acoustic explosion signal under the test model track line, namely the acoustic explosion signal transmitted by the model wave system along the middle sublevel thereof, which requires the pressure measuring rail middle sublevel to be coplanar with the test model middle sublevel, and ensures that the pressure measuring holes distributed along the air flow direction of the pressure measuring rail are all positioned in the test model middle sublevel. Otherwise, due to the three-dimensional characteristics of the model wave system and the non-uniformity of the wind tunnel space flow field, especially the non-uniform transverse distribution, the reliability and the accuracy of the acoustic explosion signal measurement result under the path line may be reduced, and even the measurement result may be a non-path acoustic explosion signal when serious.
The conventional wind tunnel test model and the measuring device are basically connected directly or indirectly. In the acoustic explosion test, the test model and the pressure measuring rail are respectively and independently arranged on the wind tunnel section, and meanwhile, the relative position relationship is strictly ensured.
At present, in the acoustic explosion test, the position and the posture of the pressure measuring rail are mainly adjusted in an indirect mode, namely, the inherent structure in the wind tunnel is used as a reference standard, the relative position relations of the test model and the pressure measuring rail and the reference standard are respectively obtained, the relative position relations of the model and the pressure measuring rail and the reference standard are consistent through adjustment, and the relative position relation matching of the model and the pressure measuring rail is indirectly realized. Specifically, the indirect method mainly includes the following two methods.
Firstly, the installation fixing position of the pressure measuring rail is arranged on the test section, namely, the section which is the same as the fixing position of the model. And the relative position relation between the test model and the pressure measuring rail is measured by taking the fixed structures such as the wall plate of the test section and the like as references, then the installation position and the posture of the pressure measuring rail are adjusted, the consistency between the relative position relation between the pressure measuring rail and the reference and the consistency between the relative position relation between the model and the reference are ensured, and the position and the posture matching of the test model and the pressure measuring rail is indirectly realized.
Secondly, setting the mounting and fixing positions of the pressure measuring rail on the spray pipe section, and adjusting the mounting positions and the postures of the pressure measuring rail by taking parallel solid walls at two sides of the spray pipe as reference standards; for example, the pressure rail middles are maintained coplanar with the parallel solid wall middles on either side of the lance, even though the pressure rail is in a theoretical "ideal" condition. Then, the relative positions of the test section and the spray pipe section are adjusted to enable the axis of the spray pipe section to be coaxial with the axis of the test section; at this time, the test section and the model installed therein are considered to be in a theoretical "ideal" state as well, so that the matching of the positions and the attitudes of the test model and the pressure measuring rail is indirectly realized.
The first way has the following disadvantages: (1) The relative position relation between the wind tunnel position and angle control mechanism and the test section fixing structure is fixed, and certain deviation exists between the position and the posture of the wind tunnel position and angle control mechanism and the theoretical value due to unavoidable errors in processing and installation; for example, the existence of the installation angle can lead to an included angle between the axis of the mechanism and the axis of the wind tunnel, and the corresponding position and posture of the test model connected with the mechanism deviate from the theoretical value; when equivalent to the acoustic explosion test, there is a fixed systematic deviation;
(2) The uniform area of the wind tunnel flow field has a quite long section positioned in the spray pipe section, namely, a quite part of the pressure measuring rail is positioned in the spray pipe, and the fixed point is positioned in the test section and is similar to a cantilever structure; as the size of the pressure measuring rail increases, the cantilever characteristic of the pressure measuring rail becomes obvious, which is very unfavorable for the safety of wind tunnel tests;
(3) The fixed structures are usually structures which exist in the wind tunnel for a long time, the structures are in the wind tunnel test environment for years, and the references of the structures have large uncertainty; therefore, an additional error source is easily introduced by an indirect position and posture matching mode with a third party such as a fixed structure as a reference standard.
The second approach has the disadvantage of introducing a large number of additional error sources, as follows:
(1) The profile quality and flatness of the parallel solid walls of the wind tunnel can cause deviation of the 'ideal' state of the pressure measuring rail;
(2) The coaxiality of the axis of the spray pipe section and the axis of the test section is usually judged by a plurality of references, such as the step difference between the parallel solid walls on the same side of the spray pipe section and the test section, and the coaxiality of the axis of the spray pipe section and the axis of the test section can be influenced by the errors of the references, so that the relative position relationship between the test model and the pressure measuring rail is influenced;
(3) The axial line of the spray pipe section and the axial line of the test section are coaxial, so that the relative position of the test section is required to be adjusted repeatedly, and the workload is high; in addition, during different periods of acoustic explosion tests, the coaxiality of the axis of the spray pipe section and the axis of the test section is difficult to ensure consistency;
(4) The axis of the spray pipe section is coaxial with the axis of the test section, and the deviation between the position and the posture of the wind tunnel and the theoretical value of the axis of the test section cannot be eliminated, which is equivalent to the fixed systematic deviation between the pressure measuring rail and the test model during the acoustic explosion test.
To this end, a new apparatus and/or method is urgently needed to solve the above-mentioned problems.
Disclosure of Invention
The invention of the present application aims to: aiming at the problems of poor accuracy and reliability of acoustic explosion measurement results caused by mismatching and inaccuracy of the relative spatial positions of a test model and a pressure measurement rail when an acoustic explosion test is carried out in a large supersonic wind tunnel, the acoustic explosion test pressure measurement rail position and posture adjusting device and method are provided.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the device comprises a model reference platform matched with a model support rod connected with a model to be tested and a pressure measurement rail reference platform matched with the pressure measurement rail;
The model reference platform comprises a first arc-shaped connecting part, a first horizontal connecting part and a first vertical connecting part which are matched with straight sections of the model supporting rod and the like, wherein a first arc-shaped groove with the same diameter as the straight sections of the model supporting rod and the like is arranged on the first arc-shaped connecting part, and the first arc-shaped connecting part, the first vertical connecting part and the first horizontal connecting part are connected into a whole to form a first intermediate body which is in an inverted L shape;
the upper surface of the first horizontal connecting part is marked as a first horizontal plane I, the surface of the first vertical connecting part facing to the circle center side of the first circular arc-shaped groove is marked as a first vertical plane II, and the plane of the first horizontal plane I is perpendicular to the plane of the first vertical plane II;
the distance between the circle center of the first circular arc-shaped groove and the second vertical plane is recorded as the standard distance of the support rod;
the model reference platform is also provided with a first top thread hole, and straight sections such as a model support rod and the like connected with the model to be tested can be fixedly connected with the model reference platform through the cooperation of screws or screw rods and the first top thread hole;
the section of the pressure measuring rail along the axial direction is isosceles trapezoid, and the isosceles trapezoid is marked as a pressure measuring rail reference trapezoid; the acute angle between the waist and the height of the pressure measuring rail reference trapezoid is recorded as a pressure measuring rail reference angle alpha, and the bisector of the pressure measuring rail is recorded as a pressure measuring rail reference bisector;
The pressure measuring rail reference platform comprises a second horizontal connecting part and a second vertical connecting part, wherein the second vertical connecting part is connected with the second horizontal connecting part into a whole and forms a second intermediate body, and the second intermediate body is in an inverted L shape;
the upper surface of the second horizontal connecting part is marked as a first horizontal plane, the lower surface of the second horizontal connecting part is marked as a second horizontal plane, the second horizontal plane is matched with the upper surface of the pressure measuring rail, the second horizontal plane can be attached to the upper surface of the pressure measuring rail, and the first horizontal plane is parallel to the second horizontal plane;
the surface of the second vertical connecting part facing the pressure measuring rail is marked as a second vertical plane II, the second vertical plane II is matched with the side surface of the pressure measuring rail, and the second vertical plane II can be attached to the side surface of the pressure measuring rail;
the side surface of the second vertical connecting part, which is opposite to the second vertical plane II, is marked as a second vertical plane I, and the plane of the second horizontal plane I is vertical to the plane of the second vertical plane I;
when a second horizontal plane II is attached to the upper surface of the pressure measuring rail and a second vertical plane II is attached to the side surface of the pressure measuring rail at the same time, the plane of the middle dividing plane of the pressure measuring rail reference is parallel to the plane of the first vertical plane I, and the distance between the middle dividing plane of the pressure measuring rail reference and the first vertical plane I is recorded as the reference distance of the pressure measuring rail;
The acute angle formed by the plane of the first vertical plane and the plane of the second vertical plane is recorded as a second vertical angle beta, and the reference angle alpha of the pressure measuring rail is equal to the second vertical angle beta;
the pressure measuring rail reference platform is also provided with a second top wire hole, and the pressure measuring rail reference platform can be fixedly connected through the cooperation of a screw or a screw rod and the second top wire hole;
the standard distance of the support rod is equal to the standard distance of the pressure measuring rail.
The first arc-shaped groove is semicircular.
The first arc-shaped connecting part is positioned between the first horizontal connecting part and the first vertical connecting part.
The first horizontal connecting portion and the first vertical connecting portion are arranged in an inverted L shape, the connecting position of the first horizontal connecting portion and the first vertical connecting portion is marked as a first connecting position, and the first arc-shaped connecting portion is arranged at the first connecting position.
The first horizontal connecting part, the first arc connecting part and the first vertical connecting part are sequentially connected and integrally formed.
The model reference platform further comprises a first vertical fixing part matched with the first arc-shaped connecting part, the first vertical fixing part is positioned at the opening side of the first arc-shaped connecting part, and the first vertical fixing part, the first horizontal connecting part and the first arc-shaped connecting part are connected with the first vertical connecting part into a whole;
The first jackscrew hole is arranged on the first vertical fixing part.
The first vertical fixing portion and the first vertical connecting portion are arranged in parallel.
And also includes a screw or threaded rod that mates with the first jackscrew hole.
The first vertical fixing part, the first horizontal connecting part, the first arc-shaped connecting part and the first vertical connecting part are integrally formed.
The second horizontal connecting part and the second vertical connecting part are integrally formed.
And also includes a screw or threaded rod that mates with the second jackscrew hole.
The pressure measurement rail reference platform further comprises a second vertical fixing part, the second vertical fixing part and the second vertical connecting part are arranged oppositely, and the second vertical fixing part and the second vertical connecting part are respectively positioned on two side surfaces of the pressure measurement rail;
the second jackscrew hole is arranged on the second vertical fixing part.
The second vertical fixing part is connected with the second horizontal connecting part to form an inverted L shape, and the second vertical fixing part, the second horizontal connecting part and the second vertical connecting part are integrally formed.
The pressure measurement rail benchmark platform still includes second horizontal support portion, second horizontal support portion links to each other as an organic wholely with the vertical connecting portion of second and second horizontal support portion can provide the support for pressure measurement rail benchmark platform.
The second horizontal connecting part, the second vertical connecting part and the second horizontal supporting part are connected along the axial direction of the pressure measuring rail reference platform and are in an inverse Z shape;
along the axial direction of the pressure measurement rail benchmark platform, the second vertical fixing part, the second horizontal connecting part and the second vertical connecting part are connected and are inverted U-shaped.
The number of the model reference platforms and the number of the pressure measuring rail reference platforms are N respectively, wherein N is a natural number and is more than or equal to 1.
The number of the model reference platforms and the number of the pressure measuring rail reference platforms are respectively 2-3.
A method for adjusting the position and the posture of a pressure measuring rail in an acoustic explosion test comprises the following steps:
(1) According to the wind tunnel test requirement, connecting a test model with a wind tunnel position and angle control mechanism through a model support rod, and ensuring that the attack angle of the model support rod is zero;
(2) Installing a model reference platform at a position of a model supporting rod with the diameter consistent with that of a first circular arc-shaped groove of the model reference platform;
(3) The plane of the first horizontal plane I is vertical to the plane of the second vertical plane II; determining the rolling angle of the model reference platform through the angle of the first horizontal plane I, so that the rolling angle of the model reference platform is zero; at this time, the first vertical plane II is parallel to the bisector of the test model and the model strut respectively; the relative positions of the model reference platform and the model supporting rod are fixed through the cooperation of the screw or the screw rod and the first top thread hole;
(4) Placing a pressure measuring rail at a set wind tunnel installation position; placing a pressure measuring rail reference platform on the axial position of the pressure measuring rail; after the second vertical plane II is tightly attached to the side surface of the pressure measuring rail, the relative position and the posture of the pressure measuring rail reference platform and the pressure measuring rail are fixed through the cooperation of a screw or a screw rod and a second top wire hole;
(5) The first horizontal plane is used as a measuring platform, and the attack angle and the roll angle of the pressure measuring rail are adjusted to be zero;
(6) Controlling the test model to move along the axial direction of the wind tunnel by utilizing the wind tunnel position and angle control mechanism, and ensuring that the pressure measuring rail reference platform is positioned in the length section of the pressure measuring rail;
(7) The position of the test model is adjusted by utilizing the wind tunnel position and angle control mechanism, so that the first vertical plane II of the model reference platform is controlled to be close to the pressure measuring rail, the first vertical plane II is required to be in contact with the pressure measuring rail, and the contact surface between the first vertical plane II and the second vertical plane I is ensured to be as much as possible;
(8) Adjusting the axial position of the pressure measuring rail reference platform to enable the pressure measuring rail reference platform and a first vertical plane II of the corresponding model reference platform to be in the same axial position;
(9) The space position of the pressure measuring rail is adjusted, so that a second vertical plane I of the pressure measuring rail reference platform is coplanar with a first vertical plane II of the corresponding model reference platform;
at this time, the bisection plane of the pressure measuring rail is considered to be coplanar with the bisection plane of the test model and the bisection plane of the model strut respectively, that is, the measurement result of the pressure measuring rail is the acoustic explosion signal under the track line of the test model.
When the model reference platform and the pressure measuring rail reference platform are respectively two, the method comprises the following steps:
(1) According to the wind tunnel test requirement, connecting a test model with a wind tunnel position and angle control mechanism through a model support rod, and ensuring that the attack angle of the model support rod is zero;
(2) Respectively installing two model reference platforms at the positions of model support rods with the diameters consistent with the diameters of the first circular arc grooves of the two model reference platforms;
(3) The plane of the first horizontal plane I is vertical to the plane of the second vertical plane II; determining the rolling angle of the model reference platform through the angle of the first horizontal plane I, so that the rolling angle of the model reference platform is zero; at this time, the first vertical plane II is parallel to the bisector of the test model and the model strut respectively; the relative positions of the model reference platform and the model supporting rod are fixed through the cooperation of the screw or the screw rod and the first top thread hole;
(4) Placing a pressure measuring rail at a set wind tunnel installation position; respectively placing the two pressure measuring rail reference platforms at different axial positions of the pressure measuring rail; after the second vertical plane II is tightly attached to the side surface of the pressure measuring rail, the relative position and the posture of the pressure measuring rail reference platform and the pressure measuring rail are fixed through the cooperation of a screw or a screw rod and a second top wire hole;
(5) The first horizontal plane is used as a measuring platform, and the attack angle and the roll angle of the pressure measuring rail are adjusted to be zero;
(6) Controlling the test model to move along the axial direction of the wind tunnel by utilizing the wind tunnel position and angle control mechanism, and ensuring that the two pressure measuring rail reference platforms are positioned in the length interval of the pressure measuring rail;
(7) The position of the test model is adjusted by utilizing the wind tunnel position and angle control mechanism, so that the first vertical plane II of the model reference platform is controlled to be close to the pressure measuring rail, and the contact area of the first vertical plane II and the second vertical plane I is ensured to be as large as possible;
(8) The axial positions of the two pressure measuring rail reference platforms are adjusted, so that the pressure measuring rail reference platforms and the first vertical planes II of the corresponding model reference platforms are positioned at the same axial position;
(9) The space position of the pressure measuring rail is adjusted, so that a second vertical plane I of the pressure measuring rail reference platform is coplanar with a first vertical plane II of the corresponding model reference platform;
at this time, the bisection plane of the pressure measuring rail is considered to be coplanar with the bisection plane of the test model and the bisection plane of the model strut respectively, that is, the measurement result of the pressure measuring rail is the acoustic explosion signal under the track line of the test model.
Aiming at the problems, the application provides a device and a method for adjusting the position and the posture of a pressure measuring rail for an acoustic explosion test, which mainly comprise two parts: model reference platform, pressure measurement rail reference platform. In a specific example, the external structure of the model reference platform is shown in fig. 4-6, and considering that the length of the pressure measuring rail is long, in order to ensure the adjustment reliability and the adjustment efficiency, in a specific embodiment, two model reference platforms are adopted and are respectively fixed on equal straight sections of different axial positions of the model connecting support rod. Specifically, the diameters of the first circular arc grooves of the two model reference platforms may be different due to the different diameters of straight sections of the struts and the like corresponding to the respective connection positions. Meanwhile, the first arc-shaped groove is semicircular and is required to be strictly consistent with the diameter of straight sections such as a supporting rod connected with the model, and the arc-shaped contact surface of the first arc-shaped groove and the straight sections is enough to ensure that the model reference platform can accurately map the position and the posture information of the supporting rod. The first horizontal plane I is a measuring reference platform of a model attitude angle, and the first vertical plane II and the first horizontal plane I have a definite angle relation and are usually required to be perpendicular to each other; the model reference platform is provided with a first top thread hole for fixing between the model reference platform and the model supporting rod.
In a specific example, the appearance structure of the pressure measurement rail reference platform is shown in fig. 7-9, and the pressure measurement rail reference platform is two pieces so as to be matched with the model reference platform for use, wherein the second vertical plane II is required to be strictly attached to the side surface of the pressure measurement rail, so that the pressure measurement rail reference platform can accurately map the position and posture information of the pressure measurement rail. The first vertical plane and the second vertical plane have a definite angle relation, and the angle of the first vertical plane and the second vertical plane is generally required to be consistent with the included angle between the side surface of the pressure measuring rail and the bisector surface, which is equivalent to that the second vertical plane is parallel to the pressure measuring rail bisector surface. The first horizontal plane is a measurement reference platform of the attitude angle of the pressure measuring rail, and is required to have a definite angle relation with the first vertical plane, and two planes are usually required to be vertical; the pressure measuring rail reference platform is provided with a second top wire hole for fixing the pressure measuring rail reference platform and the pressure measuring rail.
In this application, the device includes two parts of model reference platform, pressure measurement rail reference platform. The first arc-shaped groove of the first arc-shaped connecting part in the model reference platform is strictly consistent with the diameters of straight sections such as the model supporting rod and the like, and the arc contact surface of the first arc-shaped groove and the straight sections is enough; the first horizontal plane I is a measurement reference platform of the model attitude angle, and the second vertical plane I and the first horizontal plane I have a definite angle relation and usually require that two planes are vertical. Meanwhile, the second vertical plane II of the pressure measurement rail reference platform is required to be strictly attached to the side face of the pressure measurement rail, so that the pressure measurement rail reference platform can accurately map the position and posture information of the pressure measurement rail; the first vertical plane and the second vertical plane have a definite angle relation, and the angle of the first vertical plane and the second vertical plane is generally required to be consistent with the included angle between the side surface of the pressure measuring rail and the bisector surface, which is equivalent to that the first vertical plane is parallel to the bisector surface of the pressure measuring rail; the first horizontal plane is a measurement reference platform of the attitude angle of the pressure measuring rail, and is required to have a definite angle relation with the first vertical plane, and two planes are usually required to be perpendicular.
In the model reference platform, the distance between the first vertical plane II and two parallel planes of the split surface in the straight section of the model support rod and the like is required to be determined, and the distance is recorded as the support rod reference distance; in the pressure measuring rail reference platform, the distance between the first vertical plane and the two parallel planes of the middle split surface of the pressure measuring rail is determined by taking the reference distance of the support rod as a reference, and the distance between the first vertical plane and the second vertical plane is determined by taking the reference distance as a reference, so that the distance between the two parallel planes is exactly counteracted; when the first vertical plane II and the second vertical plane I are attached, the aim that the bisection surface of the model to be tested, the bisection surface of the model supporting rod connected with the model to be tested and the bisection surface of the pressure measuring rail are coplanar is achieved. The aim that the bisection plane of the pressure measuring rail is coplanar with the bisection plane of the model to be measured and the model support rod is ensured through reasonable design of parameters.
The structure comprises a first horizontal plane I, a first vertical plane II, a second horizontal plane I, a second horizontal plane II, a second vertical plane I and a second vertical plane II, wherein the surfaces ensure good flatness and surface roughness; the diameter of the inner surface of the first circular arc-shaped groove is strictly consistent with that of straight sections such as the model supporting rod, and sufficient roundness is ensured; the angular relationship among the surfaces is strictly ensured, so that the model reference platform and the pressure measuring rail reference platform can truly map the position and posture information of the model to be measured, the model support rod and the pressure measuring rail.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
(1) The wind tunnel fixing structure with questionable references is not used as a reference standard, but a high-precision pressure measuring rail position and posture adjusting device with the shape parameters and the profile quality capable of being strictly ensured is designed, and errors caused by the reference standard are reduced;
(2) According to the method, the model is directly used as a reference, the position and the posture of the pressure measuring rail are adjusted, no matter how the external conditions (including cavity conditions and model installation conditions) change, when in acoustic explosion test, the pressure measuring rail is always positioned under the track line of the model to be tested, and the obtained test result is an acoustic explosion signal under the track line of the model to be tested;
(3) Compared with the existing method for measuring the relative positions among the pressure measuring rail, the model and the third party reference datum, even the relative positions among the sections need to be adjusted, the method provided by the invention only needs to adjust the position and the posture of the pressure measuring rail, so that the operation convenience and the working efficiency are greatly improved;
(4) The method and the device can be used for checking the self postures of the inter-test model and the pressure measuring rail and the mutual position relation;
(5) The device and the method have good universality, and similar devices and methods can be adopted in different wind tunnel acoustic explosion tests to realize the adjustment of the position and the posture of the pressure measuring rail without selecting available reference according to wind tunnel conditions;
(6) The method provided by the invention can be applied to a supersonic wind tunnel, and the device and the method can be used for realizing good matching of the relative positions of the pressure measuring rail and the test model, so that the acoustic explosion signal measurement result with higher accuracy and reliability can be obtained, and the method has important significance for improving the accuracy of the test result.
Drawings
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
FIG. 1 is a schematic diagram of the installation position of a sonic boom test apparatus in a wind tunnel based on a pressure rail.
Fig. 2 is a schematic external view of a typical pressure rail.
Fig. 3 is a schematic cross-sectional view of the exemplary pressure rail of fig. 2.
Fig. 4 is a front view of the model reference platform of example 1.
Fig. 5 is a side view of fig. 4.
Fig. 6 is a top view of fig. 4.
Fig. 7 is a front view of the rail reference platform of example 1.
Fig. 8 is a side view of fig. 7.
Fig. 9 is a top view of fig. 7.
Reference numerals: 1. the upper wall plate of the spray pipe, the lower wall plate of the spray pipe, the upper wall plate of the test section, the lower wall plate of the test section, the test model, the support rod, the position and angle control mechanism, 8, a pressure measuring rail, 11, a first arc-shaped connecting part, 12, a first horizontal connecting part, 13, a first vertical connecting part, 14, a first vertical fixing part, 15 and a first arc-shaped groove, 16, first horizontal planes, 17, first vertical planes, 21, second horizontal connecting portions, 22, second vertical connecting portions, 23, second vertical fixing portions, 24, second horizontal supporting portions, 25, second horizontal planes, 26, second horizontal planes, 27, second vertical planes, 28 and second vertical planes.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Example 1
The embodiment provides a sound explosion test pressure measurement rail position and posture adjusting device, which comprises a model reference platform matched with a model support rod connected with a model to be tested and a pressure measurement rail reference platform matched with the pressure measurement rail.
As shown in the figure, the model reference platform comprises a first arc-shaped connecting part, a first horizontal connecting part, a first vertical connecting part and a first vertical fixing part, wherein the first arc-shaped connecting part is matched with straight sections of the model support rod and the like. The first arc-shaped connecting part is provided with a first arc-shaped groove with the same diameter as the straight section of the model supporting rod, and the first vertical fixing part is positioned at the opening side of the first arc-shaped connecting part. Further, the first vertical fixing portion and the first vertical connecting portion are disposed parallel to each other. In this embodiment, the first circular arc-shaped groove is semicircular. The first vertical fixing part, the first horizontal connecting part and the first arc-shaped connecting part are connected with the first vertical connecting part into a whole and are integrally formed. The first horizontal connecting portion and the first vertical connecting portion are arranged in an inverted L shape, the connecting position of the first horizontal connecting portion and the first vertical connecting portion is recorded as a first connecting position, and the first arc-shaped connecting portion is arranged at the first connecting position. In this structure, first arc connecting portion, first vertical connecting portion, first horizontal connecting portion link to each other as an organic wholely and constitute first midbody, and first arc connecting portion is located between first horizontal connecting portion and the first vertical connecting portion. As an alternative, the first arc-shaped connection may be provided on the first horizontal connection or the first vertical connection. A first top thread hole is formed in the model reference platform; further, the first jack screw hole is provided on the first vertical fixing portion. In the structure, through the cooperation of the screw or the screw rod and the first top thread hole, straight sections such as a model supporting rod connected with a model to be tested can be fixedly connected with the model reference platform.
The upper surface of the first horizontal connecting part is marked as a first horizontal plane I, the surface of the first vertical connecting part facing to one side of the circle center of the first circular arc-shaped groove is marked as a second vertical plane II, the plane of the first horizontal plane I is perpendicular to the plane of the second vertical plane II, and the distance between the circle center of the first circular arc-shaped groove and the second vertical plane II is marked as the standard distance of the support rod.
Along the axial direction perpendicular to the pressure measuring rail, the section of the pressure measuring rail is isosceles trapezoid, and the isosceles trapezoid is marked as a pressure measuring rail reference trapezoid. The acute angle between the waist and the height of the pressure measuring rail reference trapezoid is recorded as a pressure measuring rail reference angle alpha, and the bisector of the pressure measuring rail is recorded as a pressure measuring rail reference bisector.
The pressure measuring rail reference platform comprises a second horizontal connecting part and a second vertical connecting part, wherein the second vertical connecting part is connected with the second horizontal connecting part into a whole to form a second intermediate body, and the second intermediate body is in an inverted L shape; the second horizontal connecting part and the second vertical connecting part are integrally formed. The upper surface of the second horizontal connecting portion is denoted as a first horizontal plane, and the lower surface of the second horizontal connecting portion is denoted as a second horizontal plane. The second horizontal plane II is matched with the upper surface of the pressure measuring rail, and can be attached to the upper surface of the pressure measuring rail, and the first horizontal plane II is parallel to the second horizontal plane II.
The surface of the second vertical connecting part facing the pressure measuring rail is marked as a second vertical plane II, the second vertical plane II is matched with the side surface of the pressure measuring rail, and the second vertical plane II can be attached to the side surface of the pressure measuring rail. And (3) marking the side surface of the second vertical connecting part, which is opposite to the second vertical plane II, as a first second vertical plane, wherein the plane of the first second horizontal plane is vertical to the plane of the first second vertical plane. The pressure measurement rail benchmark platform is provided with a second top wire hole, and the pressure measurement rail benchmark platform can be fixedly connected through the cooperation of the screw or the screw rod and the second top wire hole.
When the second horizontal plane II is attached to the upper surface of the pressure measuring rail and the second vertical plane II is attached to the side surface of the pressure measuring rail at the same time, the plane where the middle dividing plane of the pressure measuring rail is located is parallel to the plane where the first vertical plane is located, and the distance between the middle dividing plane of the pressure measuring rail and the first vertical plane is recorded as the reference distance of the pressure measuring rail.
The acute angle formed by the plane of the first vertical plane and the plane of the second vertical plane is recorded as a second vertical angle beta, and the reference angle alpha of the pressure measuring rail is equal to the second vertical angle beta; the reference distance of the support rod is equal to the reference distance of the pressure measuring rail.
The pressure measurement rail benchmark platform further comprises a second vertical fixing portion, the second vertical fixing portion and the second vertical connecting portion are arranged oppositely, and the second vertical fixing portion and the second vertical connecting portion are respectively located on two side faces of the pressure measurement rail. Preferably, the second jack screw hole is provided on the second vertical fixing portion. As shown in the figure, the second vertical fixing part is connected with the second horizontal connecting part to form an inverted L shape, and the second vertical fixing part, the second horizontal connecting part and the second vertical connecting part are integrally formed.
Further, the pressure measurement rail benchmark platform still includes second horizontal support portion, and second horizontal support portion links to each other as an organic wholely with the vertical connecting portion of second, and second horizontal support portion can provide the support for pressure measurement rail benchmark platform. As shown in the figure, the second horizontal connecting part, the second vertical connecting part and the second horizontal supporting part are connected along the axial direction of the pressure measuring rail reference platform and are in an inverse Z shape; along the axial direction of the pressure measurement rail reference platform, the second vertical fixing part, the second horizontal connecting part and the second vertical connecting part are connected and are inverted U-shaped.
In order to ensure adjustment reliability and adjustment efficiency, the model reference platform and the pressure measurement rail reference platform adopted in the embodiment are two pieces respectively. Wherein, two model benchmark platforms are fixed respectively at the equal straight sections of different axial positions of model connecting strut (i.e. model strut).
When the model reference platform and the pressure measuring rail reference platform are respectively two, the specific operation is as follows.
(1) According to the wind tunnel test requirement, a test model is connected with a wind tunnel position and angle control mechanism through a model support rod, so that the attack angle of the model support rod is guaranteed to be zero.
(2) And respectively installing the two model reference platforms at the positions of the model support rods, wherein the diameters of the model support rods are consistent with the diameters of the first circular arc grooves of the model reference platforms.
(3) The plane of the first horizontal plane I is vertical to the plane of the second vertical plane II; and determining the rolling angle of the model reference platform through the angle of the first horizontal plane I, so that the rolling angle of the model reference platform is zero. At this time, the first vertical plane II is parallel to the bisector of the test model and the model strut respectively; and the relative positions of the model reference platform and the model supporting rod are fixed through the cooperation of the screw or the screw rod and the first top wire hole.
(4) And placing the pressure measuring rail at a set wind tunnel installation position, and respectively placing the two pressure measuring rail reference platforms at different axial positions of the pressure measuring rail. And after the second vertical plane II is tightly attached to the side surface of the pressure measuring rail, the relative position and the posture of the pressure measuring rail reference platform and the pressure measuring rail are fixed through the cooperation of the screw or the screw rod and the second top wire hole.
(5) And adjusting the attack angle and the roll angle of the pressure measuring rail by taking the first horizontal plane as a measuring platform, so that the attack angle and the roll angle of the pressure measuring rail are respectively zero.
(6) And controlling the test model to move along the axial direction of the wind tunnel by utilizing the wind tunnel position and angle control mechanism, so as to ensure that the two pressure measuring rail reference platforms are positioned in the length interval of the pressure measuring rail.
(7) The method is characterized in that a pressure measuring rail is arranged on a lower wall plate of a wind tunnel, the height position of a test model is adjusted by using a wind tunnel position and angle control mechanism, a first vertical plane II of a model reference platform is controlled to be close to the pressure measuring rail, the bottom of the first vertical plane II is required to be lower than the top end of the pressure measuring rail, and the first vertical plane II and a second vertical plane I are ensured to have contact surfaces as many as possible.
(8) And adjusting the axial positions of the two pressure measuring rail reference platforms to ensure that the pressure measuring rail reference platforms and the first vertical planes II of the corresponding model reference platforms are positioned at the same axial position.
(9) And adjusting the space position of the pressure measuring rail to enable the second vertical plane I of the pressure measuring rail reference platform to be coplanar with the first vertical plane II of the corresponding model reference platform.
At this time, the bisection plane of the pressure measuring rail is considered to be coplanar with the bisection plane of the test model and the bisection plane of the model strut respectively, that is, the measurement result of the pressure measuring rail is the acoustic explosion signal under the track line of the test model.
It should be noted that the above description of the flow is only for the purpose of illustration and description, and does not limit the application scope of the present specification. Various modifications and changes to the flow may be made by those skilled in the art under the guidance of this specification. However, such modifications and variations are still within the scope of the present description.
While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations to the present disclosure may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this specification, and therefore, such modifications, improvements, and modifications are intended to be included within the spirit and scope of the exemplary embodiments of the present invention.
Meanwhile, the specification uses specific words to describe the embodiments of the specification. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present description. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present description may be combined as suitable.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
The above embodiments are merely examples of the present invention, and are not intended to limit the present invention, and any equivalents based on the above embodiments are intended to fall within the scope of the present invention.
Claims (10)
1. The device for adjusting the position and the posture of the pressure measuring rail in the acoustic explosion test is characterized by comprising a model reference platform matched with a model supporting rod connected with a model to be tested and a pressure measuring rail reference platform matched with the pressure measuring rail;
the model reference platform comprises a first arc-shaped connecting part, a first horizontal connecting part and a first vertical connecting part which are matched with straight sections of the model supporting rod and the like, wherein a first arc-shaped groove with the same diameter as the straight sections of the model supporting rod and the like is arranged on the first arc-shaped connecting part, and the first arc-shaped connecting part, the first vertical connecting part and the first horizontal connecting part are connected into a whole to form a first intermediate body which is in an inverted L shape;
the upper surface of the first horizontal connecting part is marked as a first horizontal plane I, the surface of the first vertical connecting part facing to the circle center side of the first circular arc-shaped groove is marked as a first vertical plane II, and the plane of the first horizontal plane I is perpendicular to the plane of the first vertical plane II;
The distance between the circle center of the first circular arc-shaped groove and the second vertical plane is recorded as the standard distance of the support rod;
the model reference platform is also provided with a first top thread hole, and straight sections such as a model support rod and the like connected with the model to be tested can be fixedly connected with the model reference platform through the cooperation of screws or screw rods and the first top thread hole;
the section of the pressure measuring rail along the axial direction is isosceles trapezoid, and the isosceles trapezoid is marked as a pressure measuring rail reference trapezoid; the acute angle between the waist and the height of the pressure measuring rail reference trapezoid is recorded as a pressure measuring rail reference angle alpha, and the bisector of the pressure measuring rail is recorded as a pressure measuring rail reference bisector;
the pressure measuring rail reference platform comprises a second horizontal connecting part and a second vertical connecting part, wherein the second vertical connecting part is connected with the second horizontal connecting part into a whole and forms a second intermediate body, and the second intermediate body is in an inverted L shape;
the upper surface of the second horizontal connecting part is marked as a first horizontal plane, the lower surface of the second horizontal connecting part is marked as a second horizontal plane, the second horizontal plane is matched with the upper surface of the pressure measuring rail, the second horizontal plane can be attached to the upper surface of the pressure measuring rail, and the first horizontal plane is parallel to the second horizontal plane;
The surface of the second vertical connecting part facing the pressure measuring rail is marked as a second vertical plane II, the second vertical plane II is matched with the side surface of the pressure measuring rail, and the second vertical plane II can be attached to the side surface of the pressure measuring rail;
the side surface of the second vertical connecting part, which is opposite to the second vertical plane II, is marked as a second vertical plane I, and the plane of the second horizontal plane I is vertical to the plane of the second vertical plane I;
when a second horizontal plane II is attached to the upper surface of the pressure measuring rail and a second vertical plane II is attached to the side surface of the pressure measuring rail at the same time, the plane of the middle dividing plane of the pressure measuring rail reference is parallel to the plane of the first vertical plane I, and the distance between the middle dividing plane of the pressure measuring rail reference and the first vertical plane I is recorded as the reference distance of the pressure measuring rail;
the acute angle formed by the plane of the first vertical plane and the plane of the second vertical plane is recorded as a second vertical angle beta, and the reference angle alpha of the pressure measuring rail is equal to the second vertical angle beta;
the pressure measuring rail reference platform is also provided with a second top wire hole, and the pressure measuring rail reference platform can be fixedly connected through the cooperation of a screw or a screw rod and the second top wire hole;
The standard distance of the support rod is equal to the standard distance of the pressure measuring rail.
2. The device of claim 1, wherein the first circular arc shaped groove is semi-circular.
3. The device of claim 1, wherein the first arcuate connection is located between the first horizontal connection and the first vertical connection.
4. A device according to claim 3, wherein the first horizontal connection and the first vertical connection are arranged in an inverted L-shape, the junction of the first horizontal connection and the first vertical connection being denoted as a first junction, the first arcuate connection being provided at the first junction.
5. The apparatus of any one of claims 1-4, wherein the model reference platform further comprises a first vertical fixing portion mated with the first arcuate connecting portion, the first vertical fixing portion being located on an open side of the first arcuate connecting portion, the first vertical fixing portion, the first horizontal connecting portion, the first arcuate connecting portion being integrally connected with the first vertical connecting portion;
the first jackscrew hole is arranged on the first vertical fixing part.
6. The device of claim 5, wherein the first vertical fixing portion and the first vertical connecting portion are disposed parallel to each other.
7. The apparatus of claim 1, wherein the pressure rail reference platform further comprises a second vertical fixing portion disposed opposite the second vertical connecting portion and located on two sides of the pressure rail, respectively;
the second jackscrew hole is arranged on the second vertical fixing part.
8. The apparatus of claim 1, wherein the pressure rail reference platform further comprises a second horizontal support portion integrally connected to the second vertical connection portion and configured to provide support for the pressure rail reference platform.
9. An adjusting method using the acoustic explosion test pressure measuring rail position and posture adjusting device according to any one of claims 1 to 8, characterized by comprising the steps of:
(1) According to the wind tunnel test requirement, connecting a test model with a wind tunnel position and angle control mechanism through a model support rod, and ensuring that the attack angle of the model support rod is zero;
(2) Installing a model reference platform at a position of a model supporting rod with the diameter consistent with that of a first circular arc-shaped groove of the model reference platform;
(3) The plane of the first horizontal plane I is vertical to the plane of the second vertical plane II; determining the rolling angle of the model reference platform through the angle of the first horizontal plane I, so that the rolling angle of the model reference platform is zero; at this time, the first vertical plane II is parallel to the bisector of the test model and the model strut respectively; the relative positions of the model reference platform and the model supporting rod are fixed through the cooperation of the screw or the screw rod and the first top thread hole;
(4) Placing a pressure measuring rail at a set wind tunnel installation position; placing a pressure measuring rail reference platform on the axial position of the pressure measuring rail; after the second vertical plane II is tightly attached to the side surface of the pressure measuring rail, the relative position and the posture of the pressure measuring rail reference platform and the pressure measuring rail are fixed through the cooperation of a screw or a screw rod and a second top wire hole;
(5) The first horizontal plane is used as a measuring platform, and the attack angle and the roll angle of the pressure measuring rail are adjusted to be zero;
(6) Controlling the test model to move along the axial direction of the wind tunnel by utilizing the wind tunnel position and angle control mechanism, and ensuring that the pressure measuring rail reference platform is positioned in the length section of the pressure measuring rail;
(7) The position of the test model is adjusted by utilizing a wind tunnel position and angle control mechanism, so that a first vertical plane II of a model reference platform is controlled to be close to the pressure measuring rail, and the first vertical plane II is required to be contacted with the pressure measuring rail;
(8) Adjusting the axial position of the pressure measuring rail reference platform to enable the pressure measuring rail reference platform and a first vertical plane II of the corresponding model reference platform to be in the same axial position;
(9) The space position of the pressure measuring rail is adjusted, so that a second vertical plane I of the pressure measuring rail reference platform is coplanar with a first vertical plane II of the corresponding model reference platform;
At this time, the bisection plane of the pressure measuring rail is considered to be coplanar with the bisection plane of the test model and the bisection plane of the model strut respectively, that is, the measurement result of the pressure measuring rail is the acoustic explosion signal under the track line of the test model.
10. The method of claim 9, wherein the model reference platform and the pressure rail reference platform are two, respectively, comprising the steps of:
(1) According to the wind tunnel test requirement, connecting a test model with a wind tunnel position and angle control mechanism through a model support rod, and ensuring that the attack angle of the model support rod is zero;
(2) Respectively installing two model reference platforms at the positions of model support rods with the diameters consistent with the diameters of the first circular arc grooves of the two model reference platforms;
(3) The plane of the first horizontal plane I is vertical to the plane of the second vertical plane II; determining the rolling angle of the model reference platform through the angle of the first horizontal plane I, so that the rolling angle of the model reference platform is zero; at this time, the first vertical plane II is parallel to the bisector of the test model and the model strut respectively; the relative positions of the model reference platform and the model supporting rod are fixed through the cooperation of the screw or the screw rod and the first top thread hole;
(4) Placing a pressure measuring rail at a set wind tunnel installation position; respectively placing the two pressure measuring rail reference platforms at different axial positions of the pressure measuring rail; after the second vertical plane II is tightly attached to the side surface of the pressure measuring rail, the relative position and the posture of the pressure measuring rail reference platform and the pressure measuring rail are fixed through the cooperation of a screw or a screw rod and a second top wire hole;
(5) The first horizontal plane is used as a measuring platform, and the attack angle and the roll angle of the pressure measuring rail are adjusted to be zero;
(6) Controlling the test model to move along the axial direction of the wind tunnel by utilizing the wind tunnel position and angle control mechanism, and ensuring that the two pressure measuring rail reference platforms are positioned in the length interval of the pressure measuring rail;
(7) The position of the test model is adjusted by utilizing the wind tunnel position and angle control mechanism, so that the second vertical plane of the model reference platform is controlled to be close to the pressure measuring rail;
(8) The axial positions of the two pressure measuring rail reference platforms are adjusted, so that the pressure measuring rail reference platforms and the first vertical planes II of the corresponding model reference platforms are positioned at the same axial position;
(9) The space position of the pressure measuring rail is adjusted, so that a second vertical plane I of the pressure measuring rail reference platform is coplanar with a first vertical plane II of the corresponding model reference platform;
at this time, the bisection plane of the pressure measuring rail is considered to be coplanar with the bisection plane of the test model and the bisection plane of the model strut respectively, that is, the measurement result of the pressure measuring rail is the acoustic explosion signal under the track line of the test model.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7302839B1 (en) * | 2006-06-22 | 2007-12-04 | Cessna Aircraft Company | Method and system for gathering pressure signature data using a scaled model in a wind tunnel |
| CN108195553A (en) * | 2016-12-08 | 2018-06-22 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of supersonic aircraft sonic boom token test measuring device |
| CN110132528A (en) * | 2019-06-27 | 2019-08-16 | 中国空气动力研究与发展中心高速空气动力研究所 | It is a kind of temporarily to rush formula supersonic wind tunnel sonic boom measurement experimental rig and measuring method |
| CN110672295A (en) * | 2019-10-28 | 2020-01-10 | 中国航空工业集团公司沈阳空气动力研究所 | Jet flow model sonic explosion characteristic wind tunnel test device |
| CN114218778A (en) * | 2021-12-08 | 2022-03-22 | 南京航空航天大学 | Method and device for analyzing sonic boom test data |
| CN117147093A (en) * | 2023-10-30 | 2023-12-01 | 中国航空工业集团公司沈阳空气动力研究所 | Wind tunnel test measuring device for acoustic explosion characteristics of low acoustic explosion supersonic civil aircraft |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8833153B2 (en) * | 2012-09-20 | 2014-09-16 | The Boeing Company | Correction of pressure signals measured during supersonic wind tunnel testing |
| US10699584B2 (en) * | 2018-03-02 | 2020-06-30 | Honeywell International Inc. | Systems and methods for sonic boom aware flight planning |
| US20230130658A1 (en) * | 2020-03-16 | 2023-04-27 | Japan Aerospace Exploration Agency | Method of designing an aircraft shape of a supersonic aircraft, method of producing a supersonic aircraft, and supersonic aircraft |
-
2023
- 2023-10-30 CN CN202311416061.1A patent/CN117147090B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7302839B1 (en) * | 2006-06-22 | 2007-12-04 | Cessna Aircraft Company | Method and system for gathering pressure signature data using a scaled model in a wind tunnel |
| CN108195553A (en) * | 2016-12-08 | 2018-06-22 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of supersonic aircraft sonic boom token test measuring device |
| CN110132528A (en) * | 2019-06-27 | 2019-08-16 | 中国空气动力研究与发展中心高速空气动力研究所 | It is a kind of temporarily to rush formula supersonic wind tunnel sonic boom measurement experimental rig and measuring method |
| CN110672295A (en) * | 2019-10-28 | 2020-01-10 | 中国航空工业集团公司沈阳空气动力研究所 | Jet flow model sonic explosion characteristic wind tunnel test device |
| CN114218778A (en) * | 2021-12-08 | 2022-03-22 | 南京航空航天大学 | Method and device for analyzing sonic boom test data |
| CN117147093A (en) * | 2023-10-30 | 2023-12-01 | 中国航空工业集团公司沈阳空气动力研究所 | Wind tunnel test measuring device for acoustic explosion characteristics of low acoustic explosion supersonic civil aircraft |
Non-Patent Citations (5)
| Title |
|---|
| Sonic-boom wind-tunnel testing techniques at high Mach numbers;Morris, O.A.;Miller, D.S.;JOURNAL OF AIRCRAFT;第9卷(第9期);第664-7页 * |
| 低声爆超声速客机声爆预测及不确定度量化分析;陈树生 等;空气动力学学报;第41卷(第 04期);第41-51页 * |
| 声爆近场压力测量风洞试验技术研究进展;刘中臣, 钱战森, 冷岩;空气动力学学报;第37卷(第04期);第636-645页 * |
| 声爆近场空间压力风洞测量技术;刘中臣;钱战森;冷岩;高亮杰;;航空学报(第04期);第114-126页 * |
| 超声速飞行器声爆预测技术研究现状与发展建议;钱战森 等;气动研究与试验;第1卷(第04期);第64-74页 * |
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