CN202420804U - Modal test measuring device for hypersonic speed aircraft rudder structure at high temperature of 1400 DEG C - Google Patents
Modal test measuring device for hypersonic speed aircraft rudder structure at high temperature of 1400 DEG C Download PDFInfo
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- CN202420804U CN202420804U CN2012200333839U CN201220033383U CN202420804U CN 202420804 U CN202420804 U CN 202420804U CN 2012200333839 U CN2012200333839 U CN 2012200333839U CN 201220033383 U CN201220033383 U CN 201220033383U CN 202420804 U CN202420804 U CN 202420804U
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Abstract
A modal test measuring device for a hypersonic speed aircraft rudder structure at high temperature of 1400 DEG C comprises a hypersonic speed aircraft rudder structure test part, an L-shaped fixing structure, a water-cooled cooling pipeline, a silicon carbon infrared radiation array, a shock excitation source, a molybdenum force transmission rod, a molybdenum bar guide rod, an acceleration transducer, a double platinum rhodium thermocouple transducer, a computer and a high-temperature ceramic heat insulation plate. When in a hypersonic speed aircraft rudder structure test, the silicon carbon infrared radiation array heats the rudder structure, simultaneously, the shock excitation source generates random vibration, and accordingly a high-temperature thermal vibration coupling test environment is formed. The metal molybdenum bar guide rod is directly mounted on the hypersonic speed aircraft rudder structure, vibration signals of the hypersonic speed aircraft rudder structure are transmitted out of a high-temperature thermal field at the temperature of 1400 DEG C, the normal-temperature acceleration transducer mounted at a cold end of the molybdenum bar guide rod is used for dynamically measuring thermal modal signals of the rudder structure, the thermal modal signals of the rudder structure are guided to a normal temperature region, and an effective dynamic high-temperature thermal modal test means is provided for developing a hypersonic speed long-range strategic aircraft.
Description
Technical field
The utility model relates to 1400 ℃ of high temperature modal tests of hypersonic aircraft wing rudder structure measurement mechanism; Particularly when the pneumatic thermal modeling test of hypersonic aircraft structure; Can measure high to 1400 ℃ of thermal environments the dynamic rule of its high temperature mode during the vibration of compound substance wing rudder structure, hit for high-speed missile and long-range strategic maneuver hypersonic aircraft wing rudder structure such as weapon at a high speed, the elevated temperature heat safety and the reliability design of shaking under the coupling environment provide important test basis.
Background technology
Along with the development of space flight and aviation technology, the design flying speed of long-range maneuvering-vehicle is improving constantly.Modern war simultaneously causes the development work that hypersonic aircraft is competitively carried out in countries in the world to the operational performance requirement of the high speed of aircraft, high precision, high maneuverability.Say from movement velocity, when aircraft speed surpasses 5 times of velocities of sound (Mach number is greater than 5), be commonly referred to as hypersonic aircraft.Hypersonic aircraft can realize that the whole world is remote and arrive fast, and it is prominent at a high speed anti-to implement effective high-altitude, accomplishes quick precision strike.Stepped into since 21 century, owing to have extremely important application value in army and great strategic importance, hypersonic aircraft has become the focus of each main spacefaring nation research of the world.For example, the huge funds research and development speed of NASA (NASA) input is velocity of sound 10-15 utmost point supersonic plane doubly; Russia at present reaches 14 the sky and space plane with ultra " territorial sky " striking capabilities putting forth effort the research and development Mach number; France Ministry of National Defence plan development Mach number reaches 12 hypersonic maneuver aircraft; Japan is in the experimental flight of the hypersonic aircraft that carries out Mach 2 ship 10.Competitively carry out in various countries under the overall background of hypersonic aircraft development; The research of the hypersonic long-range maneuvering-vehicle that China also sets forth in making great efforts to carry out like the project of national nature science fund project guide; Point out in the state natural sciences fund guide that this research relates to national security and peaceful use space; Being that one of focus of space technology is competitively fought in the world at present, is the embodiment of overall national strength.At the beginning of 21 century, party and country ' s leader collective has made the technology of carrying out hypersonic aircraft and the decision-making of applied research, and to improving the overall national strength, promoting great rejuvenation of the Chinese nation cause will exert far reaching influence.
When flying with high Mach number, " thermal boundary " problem that is caused by pneumatic heating is very serious.When hypersonic aircraft during with 6-10 Mach number high-speed flight, the temperature range in major parts such as its wing, yaw rudder, vertical fin zone will reach between 800 ℃-1400 ℃.So exceedingly odious elevated temperature heat environment makes the hot strength problem of hypersonic aircraft material and structure become one of important key issue concerning the development success or failure.And wing rudder structure surface can produce the temperature variation of two-forty during high-speed flight; Make inside configuration form bigger thermograde; Produce extra heat stress; This can cause that the rigidity of structure changes, thereby changes the characteristics of mode of wing rudder structure, and then buffet characteristic, the control characteristic of high-speed aircraft exerted an influence.Therefore must carry out the high temperature modal test to hypersonic aircraft wing rudder structure; Elevated temperature heat environment and vibration environment in the simulated flight process; Under power thermal coupling condition to the test that makes an experiment of the vibration characteristics of hypersonic aircraft wing rudder structure; Parameters such as acquisition parts hot-die attitude are with the different change rule of temperature, and this work has very important meaning to the reliability design and the safe flight of hypersonic aircraft speed.
Hypersonic aircraft wing rudder face structure has adopted serviceability temperature to make greater than 1400 ℃ novel fire resistant compound substance at present; When measuring the high temperature mode of this wing rudder structure; Need acceleration transducer be installed at a plurality of sections of wing rudder structure, obtain the Changing Pattern of each rank high temperature mode of structure through the dynamic vibration signal that measures.In the ordinary course of things; When temperature during greater than 600 ℃-700 ℃, even if adopt refractory metal materials such as high temperature alloy or titanium alloy, in the phenomenon that increase, strength and stiffness decline also can occur softening, be out of shape; Fusing point like metallic copper is 1080 ℃; The fusing point of No. 45 steel is 1350 ℃, not only can occur hot mastication and be in 1400 ℃ of measurements under the thermal extremes environment with acceleration transducer and power transmission metal coupling unit, even can be melted inefficacy.The urgent hope of hypersonic aircraft design department can be implemented in up under 1400 ℃ the extreme thermal environment; To the high temperature mode research experiment of wing rudder structure, this work has very important realistic meaning to the development and the Safety Design of hypersonic long-range maneuvering-vehicle.Can under high temperature like this, (1400 ℃) not carry out the relevant research report that the hot-die attitude is tested but have as yet at present.
The utility model content
The technology of the utility model is dealt with problems and is: the deficiency that overcomes prior art; The modal test measurement mechanism of a kind of hypersonic aircraft wing rudder structure under 1400 ℃ of thermal extremes environment is provided; This device can be brought up to 1400 ℃ (fusing points that surpassed metallic copper and 45# steel) with high temperature modal test temperature; The dynamic rule of its high temperature mode when measuring under this extreme thermal environment compound substance wing rudder structure high vibration simultaneously, the wing rudder structure that hits weapon, high-speed missile for long-range strategic maneuver provides important test basis in security and the reliability design that elevated temperature heat-couple of force closes under the vibration environment.
The technical solution of the utility model is: 1400 ℃ of high temperature modal tests of hypersonic aircraft wing rudder structure measurement mechanism comprises: hypersonic aircraft wing rudder structure testpieces, L type fixed support, water-cooled cooling pipeline, silicon-carbon infra-red radiation array, exciting source, molybdenum transmission rod, the tight locknut of molybdenum, molybdenum bar guide rod, acceleration transducer, high temperature reflector, platinum rhodium thermocouple sensor, signal amplifier, computer and refractory ceramics thermal insulation board; Said hypersonic aircraft wing rudder structure testpieces by high-temperature steel bolt, high-temperature steel nut, be fixed on the L type fixed support and form cantilever design.Each layout of upper and lower surface of hypersonic aircraft wing rudder structure testpieces is organized silicon-carbon infrared radiation array; Give the upper and lower surface heating of hypersonic aircraft wing rudder structure testpieces, the pneumatic thermal environment of the residing height to 1400 of wing rudder structure ℃ during the flight of simulation hypersonic aircraft; Exciting source is connected through the tight locknut of molybdenum and the hypersonic aircraft wing rudder structure testpieces of the metal molybdenum transmission rod upper end of fusing point up to 2620 ℃; Exciting source sends the vibrational excitation signal makes hypersonic aircraft wing rudder structure testpieces produce vibration, the vibrational state of wing rudder structure when simulating hypersonic flight; It is the thin pole shape metal molybdenum transmission rod of 3-5mm that diameter has been installed at the frontier point place of hypersonic aircraft wing rudder structure testpieces; Be fixed on the hypersonic aircraft wing rudder structure testpieces through the tight locknut of molybdenum, acceleration transducer is installed in molybdenum transmission rod lower end the vibration signal that is directed to the wing rudder structure testpieces outside the high temperature thermal field is carried out kinetic measurement.
Because metal molybdenum at high temperature can rapidly oxidation exfoliated reduce intensity; The surface of said molybdenum transmission rod, the tight locknut of molybdenum and molybdenum bar guide rod scribbles can be 1700 ℃ of high temperature reflector of working down; To block the necessary condition that airborne oxygen and metal molybdenum produce oxidation reaction, guarantee molybdenum transmission rod, the tight locknut of molybdenum and molybdenum bar guide rod strength and stiffness under 1400 ℃ of high temperature.
Because hypersonic aircraft wing rudder face structure adopts the novel fire resistant compound substance to manufacture; The power transmission rod member is very a difficulty and the key issue that must solve with effective connection between the nonmetallic composite wing rudder structure under 1400 ℃ of hot environments; Use copper (1080 ℃ of fusing points) or 45# steel metal assemblies such as (1350 ℃ of fusing points) not competent, if use high temperature ceramic material, because it is very thin to transmit the guide rod of signal because of surpassing fusing point; Diameter has only several millimeters; Stupalith fragility is very big, and is very easily cracked after the reinforcing, can not use the locking form of bolt nut to be fixed on the nonmetallic composite wing rudder structure.It is 2620 ℃ and the metal molybdenum material that is easy to process that said transmission rod and guide rod adopt fusing point; Processing an end has the molybdenum transmission rod and the molybdenum bar guide rod of screw shape; Use the tight locknut of refractory metal molybdenum that it is fastened on the nonmetallic composite wing rudder structure; Solved the problem of transmission of vibration force and mode signal under 1400 ℃ of thermal extremes environment effectively, and simple for structure, easy for installation, good reliability.
Said temperature sensor is made by noble metal platinum rhodium material.Platinum-rhodium thermocouple sensor measurement temperature range up to 1800 ℃, the platinum-rhodium thermocouple sensor has a diameter of 0.3mm, the diameter is small, fast response, and the temperature measurement range, capable of hypersonic aircraft wing of the rudder structure at 1400 ℃ high temperature environment of the temperature measurement.Send into computing machine after the light current that thermocouple sensor records presses signal to amplify through signal amplifier and convert temperature signal to, hypersonic aircraft wing rudder structure testpieces is implemented temperature control through computer instruction.
The support bracket fastened corner of said L type is welded with steel water-cooled cooling pipeline, gives the cooling of L type fixed support through the circulating water in the water-cooled cooling pipeline, to keep the strength and stiffness of steel L type fixed support in hot test.
Said silicon-carbon infrared radiation array is that 1400 ℃ silicon-carbon infrared radiation heating pipe is arranged in parallel and forms by the operating limit temperature.
Said refractory ceramics thermal insulation board is processed by stupalith that can anti-1600 ℃ of high temperature.
The principle of the utility model: according to the corresponding temperature curve of flight path radiation heating is carried out on hypersonic aircraft wing rudder structure surface with the hypersonic aircraft of 8-10 Mach flight by the infrared radiation quartz lamp heating electrodes of intensive discharging; The extremely pneumatic thermal environment of the height to 1400 the during high-speed flight of simulation hypersonic aircraft wing rudder structure ℃; Produce vibration by vibrator simultaneously, form the composite analogy environment under the hot coupling condition that shakes.When measuring hypersonic aircraft wing rudder structure natural frequency, obtain the Changing Pattern of each rank natural frequency of wing rudder structure through the dynamic vibration signal that measures at a plurality of section installation rate of hypersonic aircraft wing rudder structure sensor.And under 1400 ℃ thermal extremes environment, copper, metal materials such as 45# steel all can melt because of surpassing fusing point, and existing high temperature resistant acceleration transducer also can not use in the thermal extremes dynamic thermal environment of height to 1400 ℃.Through directly installing on the hypersonic aircraft wing rudder structure outside the thermal field that the vibration signal of the metal molybdenum bar guide rod of fusing point up to 2620 ℃ with wing rudder structure measurement point be delivered to 1400 ℃.It is the rapid oxidation of meeting after temperature surpasses 1000 ℃ that metal molybdenum has a defective, and effectively load area and strength degradation cause test failure.The utility model is employed in the method for the reflectance coating of the anti-1700 ℃ of high temperature of metal molybdenum bar guide rod surface-coated; Contacting between isolating metal molybdenum bar guide rod and the air; Prevent the high-temperature oxydation of metal molybdenum bar guide rod, guarantee metal molybdenum bar guide rod intensity and transmission force property under 1400 ℃ thermal extremes environment.And adopt the refractory ceramics thermal insulation board of 1600 ℃ of abilities; Intense radiation heat to silicon-carbon infrared radiation array sends is carried out the solar heat protection diffusion barrier, re-uses normal temperature acceleration transducer and computer data acquisition system the hypersonic aircraft wing rudder structure vibration signal that is directed to outside the high-temperature region is measured in real time.The utility model has been realized dynamically measuring of the vibration parameters such as natural frequency of hypersonic aircraft wing rudder structure under 1400 ℃ of hot conditions.The long-range strategy strike weapon of hypersonic aircraft and the high-speed missile that are exceedingly fast for developmental flight speed provide the high temperature modal test means under height to 1400 ℃ exceedingly odious thermal environment.
The utility model beneficial effect compared with prior art is:
(1) though existing experimental technique can be carried out the heat experimental test that shakes to the structure about 500-600 ℃; But to test temperature be brought up to 1400 ℃ extreme thermal environment; The test environment temperature will make metallic copper melt (fusing point of copper is 1080 ℃); Even surpass the melt temperature (1350 ℃ of fusing points) of 45# steel; It realizes that difficulty is very big, and each relevant departments hopes to carry out the 1400 ℃ of elevated temperature heat-coupling test that shakes researchs under the extreme thermal environment, obtains the key Design data of hypersonic aircraft wing rudder structure.When the utility model carries out the thermal extremes thermal vibration modal test of hypersonic aircraft wing rudder structure up to 1400 ℃; Installing on the wing rudder structure testpieces outside the thermal field that molybdenum bar guide rod device that the high refractory metal Mo of fusing point the processes vibration signal with each measurement point of hypersonic aircraft wing rudder structure is delivered to 1400 ℃; Ceramic heat-insulation board through 1600 ℃ of high temperature of ability is implemented thermoshield, re-uses the normal temperature acceleration transducer variation of the hypersonic aircraft wing rudder structure elevated temperature heat modal parameter that is directed to the normal temperature district is measured.The utility model has the advantages that and all to be in the thermal extremes thermal environment under the melt temperature at metals such as copper, steel; Hypersonic aircraft wing rudder structure is realized 1400 ℃ of elevated temperature heat mode measurements; For developing hypersonic long-range strategy strike weapon very important dynamic high temperature modal test means are provided
(2) the molybdenum transmission rod of the utility model use and the fusing point of molybdenum bar guide rod are 2620 ℃; Dystectic molybdenum transmission rod and molybdenum bar guide rod can be worked under 1400 ℃ of elevated temperature heat environment well; The oscillation exchange pumping signal that exciting source is sent is passed to hypersonic aircraft wing rudder structure testpieces, and the vibration signal of each measurement point of hypersonic aircraft wing rudder structure is passed to outside the thermal field.
(3) the utility model use can be on the surface of 1700 ℃ of high temperature reflector coated materials of working down at molybdenum transmission rod, the tight locknut of molybdenum and molybdenum bar guide rod; Blocked the contact chain that airborne oxygen and metal molybdenum produce oxidation reaction; Avoided having guaranteed molybdenum transmission rod, the tight locknut of molybdenum and molybdenum bar guide rod strength and stiffness under 1400 ℃ of high temperature because the at high temperature rapid oxidative exfoliation of metal molybdenum makes the molybdenum structure size decreases.The reflectance coating material also can fall the partial radiation heat reflection, reduces to be delivered to the heat energy in the molybdenum structure.
(4) because present hypersonic aircraft wing rudder face structure adopts the novel fire resistant compound substance to manufacture; The power transmission rod member is very a difficulty and the key issue that must solve with effective connection between the nonmetallic composite wing rudder structure under 1400 ℃ of hot environments; Use metal assemblies such as copper, steel not competent, if use high temperature ceramic material, because it is very thin to transmit the guide rod of signal because of surpassing fusing point; Diameter has only several millimeters; Stupalith fragility is very big, and is very easily cracked after the reinforcing, therefore can not use the locking form of bolt nut to be fixed on the nonmetallic composite wing rudder structure.Metal molybdenum is fusing point high (being 2620 ℃) not only; And can be processed into different shape and connection form; The utility model forms the screw shape at an end of metal molybdenum bar guide rod through machining, re-use the tight locknut of resistant to elevated temperatures metal molybdenum it is fastened on the nonmetallic composite wing rudder structure, has solved the problem of transmission of vibration force and mode signal under 1400 ℃ of thermal extremes environment effectively; And it is simple and direct to have the connection form, the advantage of good reliability.
(5) because steel L type fixed support will be in holding capacity load under the thermal extremes, 1400 ℃ high temperature can obviously make its strength and stiffness descend.The utility model is at the support bracket fastened corner welding of L type steel water-cooled cooling pipeline; Circulating water in the water-cooled cooling pipeline has been taken away the heat on the L type fixed support; Reduce the support bracket fastened temperature of L type, kept the strength and stiffness of steel L type fixed support in hot test.
(6) the utility model apparatus structure is succinct; Manufacture easy for installation; For hypersonic aircraft wing rudder structure provides effective experimental test means in 1400 ℃ of thermal extremes and strength check and the Safety Design vibrated under the compound condition, have the important military practical applications and be worth.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the hypersonic aircraft wing rudder structure testpieces synoptic diagram of the utility model;
Fig. 3 is the side diagrammatic sketch that the hypersonic aircraft wing rudder structure testpieces of the utility model installs and fixes.
Embodiment
Like Fig. 1, Fig. 2 and shown in Figure 3, the utility model is made up of with refractory ceramics thermal insulation board 16 the tight locknut of hypersonic aircraft wing rudder structure testpieces 1, high-temperature steel bolt 2, high-temperature steel nut 3, L type fixed support 4, water-cooled cooling pipeline 5, silicon-carbon infra-red radiation array 6, exciting source 7, molybdenum transmission rod 8, molybdenum 9, molybdenum bar guide rod 10, acceleration transducer 11, high temperature reflector 12, platinum rhodium thermocouple sensor 13, signal amplifier 14, computer 15.
Hypersonic aircraft wing rudder structure testpieces 1 is fixed on the L type fixed support 4 through high-temperature steel bolt 2 and high-temperature steel nut 3, forms cantilever design.The corner of pair of L type fixed support 4 respectively is welded with a steel water-cooled cooling pipeline 5, gives L type fixed support 4 coolings through circulating water.About 50-60mm place, upper and lower surface apart from hypersonic aircraft wing rudder structure testpieces 1 respectively arranges row's silicon-carbon infrared radiation heating array 6; Give the upper and lower surface heating of hypersonic aircraft wing rudder structure testpieces 1, the residing pneumatic thermal environment of hypersonic aircraft wing rudder structure when simulating high Mach number flight.Exciting source 7 is fixedly connected with hypersonic aircraft wing rudder structure testpieces 1 through the tight locknut 9 of molybdenum of molybdenum transmission rod 8 upper ends; Exciting source 7 sends the oscillation exchange pumping signal makes hypersonic aircraft wing rudder structure testpieces 1 produce vibration, the vibrational state of hypersonic aircraft wing rudder structure when simulating high Mach number flight.It is the thin pole shape molybdenum transmission rod 8 of 4mm that diameter has been installed on the frontier point of hypersonic aircraft wing rudder structure testpieces 1; Be fixed on the hypersonic aircraft wing rudder structure testpieces 1 through the tight locknut 9 of molybdenum, acceleration transducer 11 is installed in molybdenum transmission rod 8 lower ends the vibration signal of hypersonic aircraft wing rudder structure testpieces 1 is measured.Since metal molybdenum at high temperature rapidly oxidation make intensity reduction; Scribbling on the surface of molybdenum transmission rod 8, the tight locknut 9 of molybdenum and molybdenum bar guide rod 10 can be 1700 ℃ of high temperature reflector 12 of working down; To block the necessary link that airborne oxygen and metal molybdenum produce oxidation reaction, guarantee molybdenum transmission rod 8, the tight locknut 9 of molybdenum and the strength and stiffness of molybdenum bar guide rod 10 under 1400 ℃ of high temperature.Hypersonic aircraft wing rudder structure testpieces 1 middle part is equipped with the noble metal platinum rhodium thermocouple sensor 13 that can survey 1800 ℃ of high temperature; Temperature signal is sent into computer 15 after signal amplifier 14 amplifies, measure and control by the temperature of 15 pairs of hypersonic aircraft wings of computer rudder structure testpieces 1.
Because the test temperature environment is up to 1400 ℃; In the outside of silicon-carbon infrared radiation array 6 the refractory ceramics thermal insulation board 16 that thickness is 1600 ℃ of high temperature of 30-40mm ability is installed during test, the hyperthermia radiation heat that silicon-carbon infrared radiation array 6 sends is carried out the solar heat protection diffusion barrier; Refractory ceramics thermal insulation board 16 is about 50-60mm with the distance of silicon-carbon infrared radiation array 6.Carrying out hypersonic aircraft wing rudder structure elevated temperature heat when shaking coupling test; Two row's silicon-carbon infrared radiation arrays 6 make the outside surface of hypersonic aircraft wing rudder structure testpieces 1 reach 1400 ℃ high temperature; Be excited at the same time source 7 and make hypersonic aircraft wing rudder structure testpieces 1 produce excited vibration through molybdenum transmission rod 8, elevated temperature heat-complex test environment shakes in formation.Because the fusing point of molybdenum bar guide rod 10 is up to 2620 ℃; And the surface scribbles the high temperature reflector 12 of avoiding oxidation; Molybdenum bar guide rod 10 stiffness variation at high temperature is very little, can the vibration signal at hypersonic aircraft wing rudder structure testpieces 1 place be delivered to outside the high temperature thermal field well.The vibration signal of 11 pairs of wing rudder structures of acceleration transducer is installed at the cold junction of molybdenum bar guide rod 10 is implemented dynamic tracking measurement; Obtain the high temperature modal test parameter of hypersonic aircraft wing rudder structure testpieces 1 under heat is shaken the coupling test environment; For developing hypersonic long-range strategy strike weapon the high temperature mode of oscillation research technique under the extreme thermal environment is provided, the utility model test unit has very important military practical applications value.
The utility model is not set forth part in detail and is belonged to techniques well known.
Claims (5)
- A hypersonic aircraft wing rudder structural modal test 1400 ℃ high temperature measuring device, comprising: hypersonic aircraft wing rudder structural test pieces (1), high-temperature steel bolts (2), high-temperature steel nut (3), L Fixed bracket (4), water cooling line (5), silicon carbide infrared radiation array (6), the excitation source (7), molybdenum force transmission lever (8), molybdenum lock nut (9), molybdenum rod guide rod (10), the acceleration sensor (11), platinum-rhodium thermocouple sensor (13), a signal amplifier (14), computers (15) and high temperature ceramic insulation plate (16); said rudder hypersonic aircraft wing structural testing items (1) using a high temperature steel bolts (2) and high temperature steel nuts (3) fastened to the L-shaped mounting bracket (4) to form a cantilever structure; L-type bracket (4) corner welded steel water-cooled cooling pipe (5), through the flow of water to the L-shaped mounting bracket (4) cooling; distance hypersonic aircraft wing rudder structural test pieces (1) of the upper and lower surfaces 50-60mm each arranged in a row at the silicon-carbon infrared radiation heating Array (6); hypersonic aircraft wing rudder structural test pieces (1) Central installed can measure temperature 1800 ℃ precious metals platinum and rhodium thermocouple sensor (13), the temperature signal by the signal amplifier (14) amplified into the computer (15 ); excitation source (7) through molybdenum dowel (8) Mo top locking nut (9) and hypersonic aircraft wing rudder structural test pieces (1) solid joint; hypersonic aircraft wing rudder structural test pieces ( 1) is installed at the boundary of 3-5mm in diameter round bar molybdenum thin force transmission lever (8), by means of molybdenum lock nuts (9) fixed to the rudder wing structure Hypersonic test pieces (1), the acceleration sensor (11) mounted on the molybdenum dowel (8) the bottom of the rudder hypersonic aircraft wing structure test pieces (1) of the vibration signal is measured.
- 2. 1400 ℃ of high temperature modal tests of hypersonic aircraft wing rudder structure according to claim 1 measurement mechanism; It is characterized in that: the surface of said molybdenum transmission rod (8), the tight locknut of molybdenum (9), molybdenum bar guide rod (10) all scribbles can be 1700 ℃ of high temperature reflector (12) of working down, in order to block the high-temperature oxydation reaction chain that airborne oxygen and metal molybdenum produce.
- 3. 1400 ℃ of high temperature modal tests of hypersonic aircraft wing rudder structure according to claim 1 and 2 measurement mechanism is characterized in that: said molybdenum transmission rod (8), the tight locknut of molybdenum (9), molybdenum bar guide rod (10) all adopt the metal molybdenum material of fusing point up to 2620 ℃ to process.
- 4. 1400 ℃ of high temperature modal tests of hypersonic aircraft wing rudder structure according to claim 1 measurement mechanism is characterized in that: said silicon-carbon infrared radiation array (6) is that 1400 ℃ silicon-carbon infrared radiation heating pipe is arranged in parallel and forms by the operating limit temperature.
- 5. 1400 ℃ of high temperature modal tests of hypersonic aircraft wing rudder structure according to claim 1 measurement mechanism is characterized in that: said refractory ceramics thermal insulation board (16) is processed by stupalith that can anti-1600 ℃ of high temperature.
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| CN106596020A (en) * | 2016-12-30 | 2017-04-26 | 北京工业大学 | Dynamic characteristic test device for foldable wing |
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| CN108088869A (en) * | 2017-11-30 | 2018-05-29 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of thermal protection system Heat-Insulation Test device |
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| CN108168856B (en) * | 2017-11-30 | 2020-06-30 | 中国航空工业集团公司沈阳飞机设计研究所 | Hot carrier combined test device |
| CN108088869B (en) * | 2017-11-30 | 2021-03-09 | 中国航空工业集团公司沈阳飞机设计研究所 | Heat insulation performance test device of thermal protection system |
| CN109297894A (en) * | 2018-10-30 | 2019-02-01 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of radiant heating device of the big temperature gradient of multi-temperature zone |
| CN110361149A (en) * | 2019-06-19 | 2019-10-22 | 航天科工防御技术研究试验中心 | A kind of reforming unit and method for testing vibration for high temperature modal test |
| CN118031740A (en) * | 2024-04-15 | 2024-05-14 | 南京工业大学 | Axisymmetric spinning body type space-based hypersonic missile heaven-earth consistency device |
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