阅读说明：本技术 高空高速稀薄环境的多体热分离试验模拟装置及试验方法 (Multi-body thermal separation test simulation device and test method for high-altitude high-speed thin environment ) 是由 邱华诚 杨彦广 石义雷 李�杰 龙正义 于 2021-09-30 设计创作，主要内容包括：本发明公开了一种高空高速稀薄环境的多体热分离试验模拟装置及试验方法。以超高速风洞来流为前方,该多体热分离试验模拟装置包括从前至后顺序连接的模型前体、连接支杆、模型后体和支杆；模型前体内安装有杆式天平；模型后体内安装有环式天平；支杆的杆体后段开有外接供气装置的喷流气流入口,支杆的中心轴线上设置有气流通道,模型后体上开有与气流通道连通的喷嘴,喷嘴的表面与模型后体的表面平齐,喷嘴与模型后体的表面具有隔离缝隙；供气装置的喷流气流从喷流气流入口进入,通过气流通道,从喷嘴喷出。该试验方法模拟多种喷流参数,能够方便调整的上面级模型与下面级模型之间的距离,能够方便改变模型的攻角、侧滑角等模型姿态。(The invention discloses a multi-body thermal separation test simulation device and a test method for a high-altitude high-speed thin environment. The multi-body thermal separation test simulation device comprises a model front body, a connecting support rod, a model rear body and a support rod which are sequentially connected from front to back by taking the incoming flow of the ultra-high speed wind tunnel as the front; a rod balance is arranged in the model front body; a ring balance is arranged in the back body of the model; the rear section of the rod body of the supporting rod is provided with a jet flow airflow inlet externally connected with an air supply device, an airflow channel is arranged on the central axis of the supporting rod, the rear model body is provided with a nozzle communicated with the airflow channel, the surface of the nozzle is flush with the surface of the rear model body, and the nozzle and the surface of the rear model body are provided with an isolation gap; the jet air flow of the air supply device enters from the jet air flow inlet, passes through the air flow channel and is sprayed out of the nozzle. The test method simulates various jet flow parameters, can conveniently adjust the distance between the upper model and the lower model, and can conveniently change the model postures of the model such as the attack angle, the sideslip angle and the like.)

1. The multi-body thermal separation test simulation device in the high-altitude high-speed thin environment is characterized in that the incoming flow of the ultra-high-speed wind tunnel is taken as the front, and the multi-body thermal separation test simulation device comprises a model front body (1), a connecting support rod (7), a model rear body (5) and a support rod (4) which are sequentially connected from front to back; a rod balance (6) for measuring the aerodynamic force of the model precursor (1) is arranged in the model precursor (1); a ring balance (8) for measuring the aerodynamic force of the model rear body (5) is arranged in the model rear body (5); a jet flow airflow inlet (3) externally connected with an air supply device is formed in the rear section of the rod body of the supporting rod (4), an airflow channel is arranged on the central axis of the supporting rod (4), a nozzle (2) communicated with the airflow channel is formed in the model rear body (5), the surface of the nozzle (2) is flush with the surface of the model rear body (5), and an isolation gap is formed between the nozzle (2) and the surface of the model rear body (5); jet flow air flow of the air supply device enters from the jet flow air flow inlet (3) and is sprayed out from the nozzle (2) through the air flow channel;

an annular isolation gap is arranged between the rear end face of the model front body (1) and the connecting supporting rod (7), an annular isolation gap is arranged between the front end face of the model rear body (5) and the connecting supporting rod (7), and an annular isolation gap is arranged between the rear end face of the model rear body (5) and the supporting rod (4).

2. The high-altitude high-speed thin-environment multi-body thermal separation test simulation device is characterized in that the model precursor (1) is a conical shell, a conical surface is arranged at the middle section of an inner cavity of the model precursor (1), a front cone of the rod balance (6) is fixed in the conical surface in a conical surface matching, screw tightening and key positioning mode, and a rear cone of the rod balance (6) is fixed on the connecting support rod (7); the rod type balance (6) is provided with a labyrinth type heat insulation sleeve, the heat insulation sleeve comprises a front heat insulation sleeve I (9) and a front heat insulation sleeve II (10), the front section of the front heat insulation sleeve I (9) is arranged on a front cone of the rod type balance (6) in a conical surface matching mode, a cylindrical section I of the front heat insulation sleeve I (9) is sleeved on a measuring section of the rod type balance (6) and extends to the front of a rear cone of the rod type balance (6), the rear section of the front heat insulation sleeve II (10) is sleeved at the front end of a connecting support rod (7), and the cylindrical section II of the front heat insulation sleeve II (10) is sleeved on the cylindrical section I of the front heat insulation sleeve I (9); the measuring section of the rod balance (6) is isolated from the cylindrical section I of the front heat insulation sleeve I (9), and the cylindrical section I of the front heat insulation sleeve I (9) is isolated from the cylindrical section II of the front heat insulation sleeve II (10).

3. The experimental simulation device for the multi-body thermal separation in the high-altitude and high-speed lean environment as claimed in claim 1, wherein the number of the nozzles (2) is 2, and the nozzles are distributed in the model rear body (5) in an up-down symmetrical manner.

4. The experimental simulation device for the multi-body thermal separation in the high-altitude high-speed thin environment as claimed in claim 1, wherein a nozzle (14) installed along an air flow channel is arranged in the nozzle (2), and jet air flow is ejected from the nozzle (2) through the nozzle (14).

5. The experimental simulation device for the multi-body thermal separation in the high-altitude high-speed thin environment as claimed in claim 1, wherein the nozzle (2) is replaced by a debugging nozzle (15), a spray pipe (14) installed along an air flow channel is arranged in the debugging nozzle (15), and jet air flow is sprayed out of the nozzle (2) through the spray pipe (14); the entrance of spray tube (14) is provided with two independent survey burets of perpendicular to air current direction, and a survey buret is temperature measurement pipe (1501), and the total temperature of jet flow air current is measured to installation temperature sensor in temperature measurement pipe (1501), and another survey buret is pressure-measuring pipe (1502), and pressure-measuring pipe (1502) are through the external pressure measurement system of hose, measure the jet flow air current and total pressure.

6. The experimental simulation device for the multi-body thermal separation in the high-altitude and high-speed thin environment as claimed in claim 1, wherein the model rear body (5) comprises a model rear body casing I (501) and a model rear body casing II (502) which are connected in a front-back manner through cylindrical surface matching.

7. The experimental simulation device for the multi-body thermal separation in the high-altitude high-speed thin environment as claimed in claim 1, wherein the connecting support rod (7) comprises a sliding rod (701) fixed on the rear cone of the rod balance (6) and a fixed rod (702) fixed at the front end of the support rod (4) through conical surface fit; the sliding rod (701) is sleeved on the fixing rod (702), the sliding rod (701) is coaxial with the fixing rod (702), the sliding rod (701) slides back and forth along the fixing rod (702), and the distance between the model front body (1) and the model rear body (5) is adjusted; the sliding rod (701) is provided with a through hole, and the sliding rod (701) and the fixing rod (702) are tightly propped against the fixing rod (702) through a positioning screw (703) penetrating through the through hole for fixing and positioning.

8. The experimental simulation device for the multi-body thermal separation in the high-altitude and high-speed thin environment as claimed in claim 7, wherein the fixing rod (702) connected with the supporting rod (7) is fixed at the front end of the supporting rod (4) in a manner of being connected by a taper sleeve (13) and being positioned by a key (12).

9. The experimental simulation device for the multi-body thermal separation in the high-altitude high-speed thin environment as claimed in claim 7, wherein the ring balance (8) is sleeved on the fixing rod (702) connected with the supporting rod (7), and an isolation gap is formed between the ring balance (8) and the fixing rod (702); the front end face and the rear end face of the ring balance (8) are respectively provided with a flange plate, the flange plate I at the front end is fixedly connected with the front end face of a model rear body shell II (502) of the model rear body (5), and the flange plate II at the rear end is fixedly connected with the front end face of the support rod (4); the front end face of the supporting rod (4) is sleeved with a rear heat insulation sleeve (11) in a cylindrical surface matched screw fixing mode, the rear heat insulation sleeve (11) extends forwards to wrap the ring balance (8), and an isolation gap is formed between the rear heat insulation sleeve (11) and the ring balance (8).

10. The method for simulating the multi-body thermal separation test in the high-altitude high-speed thin environment is based on the device for simulating the multi-body thermal separation test in the high-altitude high-speed thin environment as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps of:

a. the method comprises the following steps of installing a support rod (4) on a middle support of the ultra-high-speed wind tunnel, installing a fixed rod (702), a ring balance (8) and a rear heat insulation sleeve (11) on the support rod (4), sleeving a sliding rod (701) on the fixed rod (702), fixing and positioning through a positioning screw (703), fixing the rod balance (6) through a front end conical surface of the sliding rod (701), sleeving a front heat insulation sleeve II (10) at the front end of the sliding rod (701), sleeving a front heat insulation sleeve I (9) on a front conical surface of the rod balance (6), and installing a model precursor (1) on the front heat insulation sleeve I (9) in a conical surface matching mode;

b. replacing the nozzle (2) on the support rod (4) with a debugging nozzle (15), opening an external air supply device, debugging the total temperature and total pressure of jet flow airflow and recording;

c. replacing the debugging nozzle (15) with a nozzle (2), and sequentially installing a model afterbody shell II (502) and a model afterbody shell I (501) of the model afterbody (5);

d. carrying out an ultrahigh-speed wind tunnel blowing test according to a test schedule;

e. and d, adjusting the distance between the model forebody (1) and the model hindbody (5), and repeating the step d until the items of the test schedule are finished.

Technical Field

The invention belongs to the technical field of ultra-high speed wind tunnel tests, and particularly relates to a multi-body thermal separation test simulation device and a test method for a high-altitude high-speed thin environment.

Background

In the interstage separation process of a multi-stage series rocket or missile, two-stage separation motion is relative motion along an axis, and ideally, only one degree of freedom exists between two stages. The missile/rocket interstage heat separation process is mainly characterized in that the upper stage jet flow forms a complex flow field in an interstage area and outside a missile body, so that a violent change force-heat environment is caused.

At present, the ultra-high speed wind tunnel test is still an important means for researching the thermal separation process, and comprises a mechanism research type test and an engineering application type test. The pneumatic characteristics and the surface pressure changes of the upper-level model and the lower-level model which are changed along with the separation distance are mainly tested, and the flow field characteristics are analyzed according to the schlieren pattern.

The problems that need to be studied mainly are: (1) researching the aerodynamic characteristics of interstage thermal separation in an ultrahigh-speed wind tunnel test and a flight state to obtain important characteristic parameters such as two-stage aerodynamic force, aerodynamic moment, pressure center position and the like in the separation process; (2) researching interference flow characteristics formed by interaction of interstage jet flow and supersonic incoming flow, and primarily analyzing interference formation mechanism and influence on interstage area force and heat environment; (3) because the missile is in an axisymmetric series-connected shape, the interstage heat separation process in an ideal state is relative motion back and forth along the axis of the missile body, the interstage heat separation process in actual flight can be influenced by a plurality of asymmetric factors, and the interference on the two-stage lateral motion and attitude motion under the conditions of asymmetric attack angle, sideslip angle and jet flow needs to be researched.

At present, it is urgently needed to develop a multi-body thermal separation test simulation device and a test method in a high-altitude high-speed thin environment, and provide a technical platform support for related research.

Disclosure of Invention

The invention aims to provide a multi-body thermal separation test simulation device in a high-altitude high-speed thin environment, and the invention aims to provide a test method of the multi-body thermal separation test simulation device in the high-altitude high-speed thin environment.

The invention relates to a multi-body thermal separation test simulation device in a high-altitude high-speed thin environment, which is characterized in that the coming flow of an ultrahigh-speed wind tunnel is taken as the front, and the multi-body thermal separation test simulation device comprises a model front body, a connecting support rod, a model rear body and a support rod which are sequentially connected from front to back; a rod balance for measuring the aerodynamic force of the model front body is arranged in the model front body; a ring balance for measuring the aerodynamic force of the model rear body is arranged in the model rear body; the rear section of the rod body of the supporting rod is provided with a jet flow airflow inlet externally connected with an air supply device, an airflow channel is arranged on the central axis of the supporting rod, the rear model body is provided with a nozzle communicated with the airflow channel, the surface of the nozzle is flush with the surface of the rear model body, and the nozzle and the surface of the rear model body are provided with an isolation gap; the jet flow air flow of the air supply device enters from the jet flow air flow inlet, passes through the air flow channel and is sprayed out from the nozzle;

an annular isolation gap is arranged between the rear end face of the model front body and the connecting support rod, an annular isolation gap is arranged between the front end face of the model rear body and the connecting support rod, and an annular isolation gap is arranged between the rear end face of the model rear body and the connecting support rod.

Furthermore, the model precursor is a conical shell, a conical surface is arranged at the middle section of an internal cavity of the model precursor, a front cone of the rod balance is fixed in the conical surface in a conical surface matching, screw tightening and key positioning mode, and a rear cone of the rod balance is fixed on the connecting support rod; the rod type balance is provided with a labyrinth type heat insulation sleeve, the heat insulation sleeve comprises a front heat insulation sleeve I and a front heat insulation sleeve II, the front section of the front heat insulation sleeve I is arranged on a front cone of the rod type balance in a conical surface matching mode, a cylindrical section I of the front heat insulation sleeve I is sleeved on a measuring section of the rod type balance and extends to the front of a rear cone of the rod type balance, the rear section of the front heat insulation sleeve II is sleeved at the front end of a connecting support rod, and a cylindrical section II of the front heat insulation sleeve II is sleeved on the cylindrical section I of the front heat insulation sleeve I; the measuring section of the rod balance is isolated from the cylindrical section I of the front heat insulation sleeve I, and the cylindrical section I of the front heat insulation sleeve I is isolated from the cylindrical section II of the front heat insulation sleeve II.

Furthermore, the number of the nozzles is 2, and the nozzles are distributed on the rear body of the model in an up-and-down symmetrical mode.

Furthermore, a spray pipe arranged along the air flow channel is arranged in the nozzle, and jet air flow is sprayed out of the nozzle through the spray pipe.

Furthermore, the nozzle is replaced by a debugging nozzle, a spray pipe arranged along the airflow channel is arranged in the debugging nozzle, and jet airflow is sprayed out from the nozzle through the spray pipe; the entrance at the spray tube is provided with two independent survey burets of perpendicular to air current direction, and a survey buret is the temperature measurement pipe, and the total temperature of jet flow air current is measured to the intraductal temperature sensor of installation of temperature measurement, and another survey buret is the pressure-measuring pipe, and the pressure-measuring pipe passes through the external pressure measurement system of hose, measures the jet flow air current and totally presses.

Furthermore, the model afterbody include through cylinder cooperation front and back connected model afterbody shell I and model afterbody shell II.

Furthermore, the connecting support rod comprises a sliding rod fixed on a rear cone of the rod balance and a fixed rod fixed at the front end of the support rod through conical surface matching; the sliding rod is sleeved on the fixed rod and is coaxial with the fixed rod, and the sliding rod slides back and forth along the fixed rod to adjust the distance between the front body and the rear body of the model; the sliding rod is provided with a through hole, and the sliding rod and the fixed rod are tightly propped against the fixed rod through a positioning screw penetrating through the through hole for fixing and positioning.

Furthermore, the fixing rod connected with the supporting rod is fixed at the front end of the supporting rod in a mode of taper sleeve connection and key positioning.

Furthermore, the ring balance is sleeved on the fixing rod connected with the supporting rod, the front end and the rear end of the ring balance are flanges, the flange I in the front is fixedly connected with the front end face of the model rear body shell II of the model rear body, and the flange II in the rear is fixedly connected with the front end face of the supporting rod of the model rear body; the circumferential surface of the front end face of the supporting rod is provided with a rear heat insulation sleeve which is sleeved on the measuring section of the ring balance in a matched mode through a cylindrical surface.

The invention discloses a test method of a multi-body thermal separation test simulation device in a high-altitude high-speed thin environment, which comprises the following steps of:

a. installing a support rod on a middle support of the ultra-high-speed wind tunnel, installing a fixed rod, a ring balance and a rear heat insulation sleeve on the support rod, sleeving a sliding rod on the fixed rod, fixing and positioning the sliding rod through a positioning screw, fixing the rod balance through a front end conical surface of the sliding rod, sleeving a front heat insulation sleeve II on the front end of the sliding rod, sleeving a front heat insulation sleeve I on a front cone of the rod balance, and installing a model precursor on the front heat insulation sleeve I in a conical surface matching mode;

b. replacing the nozzles on the supporting rod with debugging nozzles, opening an external air supply device, debugging the total temperature and total pressure of jet flow and recording;

c. replacing the debugging nozzle with a nozzle, and sequentially installing a model afterbody shell II and a model afterbody shell I of the model afterbody;

d. carrying out an ultrahigh-speed wind tunnel blowing test according to a test schedule;

e. and d, adjusting the distance between the model forebody and the model hindbody, and repeating the step d until the project of the test schedule is completed.

The device and the method for simulating the multi-body thermal separation test in the high-altitude high-speed thin environment can simulate various jet flow parameters, can conveniently adjust the distance between an upper-level model and a lower-level model, can conveniently change the model postures of the models such as the attack angle, the sideslip angle and the like, have the characteristics of flexible test device and simple and convenient test method, and are suitable for being popularized and applied to the research on the stage separation aerodynamic characteristics of multi-stage serial rockets or missiles.

Drawings

FIG. 1 is a perspective view of a multi-body thermal separation test simulation device for high-altitude high-speed thin environment of the invention;

FIG. 2 is a cross-sectional view of a model precursor in the experimental simulation device for high-altitude high-speed thin-environment multi-body thermal separation of the present invention;

FIG. 3 is a rear sectional view of a model in the simulation device for the multi-body thermal separation test in the high-altitude high-speed thin environment of the invention;

FIG. 4 is a perspective view of a debugging nozzle in the simulation device for the multi-body thermal separation test in the high-altitude high-speed thin environment of the invention;

FIG. 5 is a cross-sectional view of a debugging nozzle in the simulation device for the multi-body thermal separation test in the high-altitude high-speed lean environment of the invention.

In the figure, 1. model precursor; 2. a nozzle; 3. a jet stream inlet; 4. a strut; 5. a model afterbody; 6. a bar balance; 7. connecting a support rod; 8. a ring balance; 9. a front heat insulation sleeve I; 10. a front heat insulation sleeve II; 11. a rear heat insulation sleeve; 12. a key; 13. a taper sleeve; 14. a nozzle; 15. debugging a nozzle;

501. a model afterbody shell I; 502. a model afterbody shell II;

701. a slide bar; 702. fixing the rod; 703. a set screw;

1501. a temperature measuring tube; 1502. pressure measuring pipe.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Example 1

In this example, the balance ranges of the rod balance 6 and the ring balance 8 were determined based on the results of the preliminary tests by estimating the pneumatic loads of the model front body 1 and the model rear body 5 in the absence of jet flow. The rod balance 6 and the ring balance 8 bear the aerodynamic load of the model, and also bear the impact load in the processes of wind tunnel and jet flow starting and stopping, the impact factor of the embodiment is 3, and the safety factor is 2.

The elements of the rod balance 6 are symmetrically arranged, and the material of the rod balance 6 is F141. The front end of the rod balance 6 is connected with the model forebody 1 through 1:5 taper and is tightened by M6 multiplied by 1.0 external thread; the rear end of the rod balance 6 is connected with a connecting strut 7 through 1:10 taper. The rod balance 6 has a diameter of 16mm and a load cell length of about 53 mm. Grooves are designed at the front and rear cone ends of the rod balance 6 to reduce the mounting stress when the cone sleeves are matched.

The ring balance 8 is made of 7075 hard aluminum, and the ring structure of the ring balance 8 is convenient for mounting parts such as a fixing rod 702 connected with the supporting rod 7. The two ends of the ring balance 8 are connected by flanges, positioned by 2 pins and locked by 4M 3 screws. Ring balance 8 has an outer diameter of 50mm, an inner bore diameter of 34mm and a length of 70 mm.

As shown in fig. 1 to 5, the multi-body thermal separation test simulation device in the high-altitude high-speed thin environment of the present embodiment takes an incoming flow of an ultra-high-speed wind tunnel as a front direction, and comprises a model front body 1, a connecting support rod 7, a model rear body 5 and a support rod 4 which are sequentially connected from front to back; a rod balance 6 for measuring the aerodynamic force of the model precursor 1 is arranged in the model precursor 1; a ring balance 8 for measuring the aerodynamic force of the model rear body 5 is arranged in the model rear body 5; a jet flow airflow inlet 3 externally connected with an air supply device is formed in the rear section of the rod body of the supporting rod 4, an airflow channel is arranged on the central axis of the supporting rod 4, a nozzle 2 communicated with the airflow channel is formed in the model rear body 5, the surface of the nozzle 2 is flush with the surface of the model rear body 5, and an isolation gap is formed between the nozzle 2 and the surface of the model rear body 5; the jet flow of the air supply device enters from the jet flow inlet 3, passes through the air flow channel and is sprayed out from the nozzle 2;

an annular isolation gap is arranged between the rear end face of the model front body 1 and the connecting supporting rod 7, an annular isolation gap is arranged between the front end face of the model rear body 5 and the connecting supporting rod 7, and an annular isolation gap is arranged between the rear end face of the model rear body 5 and the supporting rod 4.

Furthermore, the model precursor 1 is a conical shell, a conical surface is arranged at the middle section of the inner cavity of the model precursor 1, the front cone of the rod balance 6 is fixed in the conical surface in a conical surface matching, screw tightening and key positioning mode, and the rear cone of the rod balance 6 is fixed on the connecting support rod 7; the rod type balance 6 is provided with a labyrinth type heat insulation sleeve, the heat insulation sleeve comprises a front heat insulation sleeve I9 and a front heat insulation sleeve II 10, the front section of the front heat insulation sleeve I9 is arranged on a front cone of the rod type balance 6 in a conical surface matching mode, a cylindrical section I of the front heat insulation sleeve I9 is sleeved on a measuring section of the rod type balance 6 and extends to the front of a rear cone of the rod type balance 6, the rear section of the front heat insulation sleeve II 10 is sleeved at the front end of a connecting support rod 7, and a cylindrical section II of the front heat insulation sleeve II 10 is sleeved on the cylindrical section I of the front heat insulation sleeve I9; the measuring section of the rod balance 6 is isolated from the cylindrical section I of the front heat insulation sleeve I9, and the cylindrical section I of the front heat insulation sleeve I9 is isolated from the cylindrical section II of the front heat insulation sleeve II 10.

Furthermore, the number of the nozzles 2 is 2, and the nozzles are distributed on the rear body 5 of the model in an up-and-down symmetrical mode.

Further, a nozzle 14 installed along the air flow passage is provided in the nozzle 2, and the jet air flow is ejected from the nozzle 2 through the nozzle 14.

Furthermore, the nozzle 2 is replaced by a debugging nozzle 15, a spray pipe 14 arranged along an air flow channel is arranged in the debugging nozzle 15, and jet air flow is sprayed out of the nozzle 2 through the spray pipe 14; two independent measuring pipes perpendicular to the airflow direction are arranged at the inlet of the spray pipe 14, one measuring pipe is a temperature measuring pipe 1501, a temperature sensor is installed in the temperature measuring pipe 1501 to measure the total temperature of the jet airflow, the other measuring pipe is a pressure measuring pipe 1502, and the pressure measuring pipe 1502 is externally connected with a pressure measuring system through a hose to measure the total pressure of the jet airflow.

Further, the model rear body 5 comprises a model rear body shell I501 and a model rear body shell II 502 which are connected in a front-back mode through cylindrical surface matching.

Furthermore, the connecting strut 7 comprises a sliding rod 701 fixed on the rear cone of the rod balance 6 and a fixing rod 702 fixed on the front end of the strut 4 through conical surface fit; the sliding rod 701 is sleeved on the fixing rod 702, the sliding rod 701 is coaxial with the fixing rod 702, the sliding rod 701 slides back and forth along the fixing rod 702, and the distance between the model front body 1 and the model rear body 5 is adjusted; the sliding rod 701 is provided with a through hole, and the sliding rod 701 and the fixing rod 702 are tightly pressed against the fixing rod 702 through a positioning screw 703 penetrating through the through hole for fixing and positioning.

Further, the fixing rod 702 connected with the supporting rod 7 is fixed at the front end of the supporting rod 4 in a manner of being connected by the taper sleeve 13 and being positioned by the key 12.

Furthermore, the ring balance 8 is sleeved on the fixing rod 702 of the connecting support rod 7, the front end and the rear end of the ring balance 8 are flanges, the front flange I is fixedly connected with the front end face of the model rear body shell II 502 of the model rear body 5, and the rear flange II is fixedly connected with the front end face of the support rod 4 of the model rear body 5; the circumferential surface of the front end face of the supporting rod 4 is provided with a rear heat insulation sleeve 11 which is sleeved on the measuring section of the ring balance 8 in a matched mode through a cylindrical surface.

The test method of the experimental simulation device for the multi-body thermal separation in the high-altitude high-speed thin environment comprises the following steps:

a. installing a support rod 4 on a middle support of the ultra-high speed wind tunnel, installing a fixed rod 702, a ring balance 8 and a rear heat insulation sleeve 11 on the support rod 4, sleeving a sliding rod 701 on the fixed rod 702, fixing and positioning the sliding rod 701 through a positioning screw 703, fixing a rod balance 6 through a front end conical surface of the sliding rod 701, sleeving a front heat insulation sleeve II 10 on the front end of the sliding rod 701, sleeving a front heat insulation sleeve I9 on a front conical surface of the rod balance 6, and installing a model precursor 1 on the front heat insulation sleeve I9 in a conical surface matching mode;

b. replacing the nozzle 2 on the support rod 4 with a debugging nozzle 15, opening an external air supply device, debugging the total temperature and total pressure of jet flow and recording;

c. replacing the debugging nozzle 15 with a nozzle 2, and sequentially installing a model rear body shell II 502 and a model rear body shell I501 of the model rear body 5;

d. carrying out an ultrahigh-speed wind tunnel blowing test according to a test schedule;

e. and d, adjusting the distance between the model front body 1 and the model rear body 5, and repeating the step d until the items of the test schedule are finished.

Although the embodiments of the present invention have been disclosed, the embodiments are not limited to the applications listed in the description and the embodiments, and can be fully applied to various fields of hypersonic boundary layer transition mode methods suitable for the present invention. Additional modifications and refinements of the present invention will readily occur to those skilled in the art without departing from the principles of the present invention, and therefore the present invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the claims and their equivalents.