CN104597075A - Heat flux simulation calibration system and calibration method for vacuum wave-absorbing type external heat flux simulation device - Google Patents
Heat flux simulation calibration system and calibration method for vacuum wave-absorbing type external heat flux simulation device Download PDFInfo
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- CN104597075A CN104597075A CN201410709809.1A CN201410709809A CN104597075A CN 104597075 A CN104597075 A CN 104597075A CN 201410709809 A CN201410709809 A CN 201410709809A CN 104597075 A CN104597075 A CN 104597075A
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Abstract
The invention provides a heat flux simulation calibration system and calibration method for a vacuum wave-absorbing type external heat flux simulation device, wherein the calibration system includes the wave-absorbing type external heat flux simulation device, a calibration simulation member, a metal baffle plate, a parking trolley and a vacuum tank; a perpendicular distance and a horizontal distance of the wave-absorbing type external heat flux simulation device to the calibration stimulation plate are both 460 mm; the wave-absorbing type external heat flux simulation device is fixed on the parking trolley through bolts; the metal baffle plate is fixed on the parking trolley through bolts; one upward side of the calibration simulation plate is successively provided with an electric heater, a temperature sensor, a thermal control coating layer and an adiabatic type heat flux meter; the back face of the calibration simulation plate is covered with a heat insulation material; the parking trolley is pushed into the vacuum tank along a guide rail. A test error is reduced, the accuracy of heat flux simulation is improved, an in-orbit working state really reappears as far as possible, and the test reliability is improved.
Description
Technical field
The present invention relates to a kind of calibration system and scaling method, particularly, relate to a kind of vacuum and inhale wave mode Orbital heat flux analogue means heat flux simulation calibration system and scaling method.
Background technology
In order to verify the correctness of aircraft thermal control subsystem thermal design, obtain aircraft temperature profile data, revise CALCULATION OF THERMAL model, need to carry out the heat balance test of product first sample in thermal control subsystem first sample development process, testing requirements carries out accurate simulation to the Orbital heat flux situation that aircraft absorbs in-orbit.Because the frock in vacuum tank, infrared heating cage etc. are all metal materials, metal material has good reflecting effect to microwave, aircraft is launched microwave in vacuum tank directly, and a large amount of microwave reflection must be had to return aircraft surface, causes aircraft section product normally to work.Therefore new demand is proposed to vacuum thermal test technology, need a kind of novel Orbital heat flux simulated calibration technology, the microwave of vehicle launch can be absorbed, Orbital heat flux accurate analog can be realized again.The vacuum that have developed of innovation inhales wave mode Orbital heat flux analogue means, solves the vacuum thermal test bottleneck under aircraft Microwave emission state.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of vacuum and inhale wave mode Orbital heat flux analogue means heat flux simulation calibration system and scaling method, it obtains the fit correlation inhaled between wave mode Orbital heat flux analogue means absorption heat flow density, heat flow meter temperature, product surface temperature three, reduce test error, improve heat flux simulation precision, reproduce duty in-orbit as far as possible really, improve test reliability.
According to an aspect of the present invention, a kind of vacuum is provided to inhale wave mode Orbital heat flux analogue means heat flux simulation calibration system, it is characterized in that, comprise suction wave mode Orbital heat flux analogue means, demarcate simulating piece, metal baffle, park dolly, vacuum tank, the vertical range between described suction wave mode Orbital heat flux analogue means and described demarcation analog board, horizontal range are 460mm; Park on dolly described in described suction wave mode Orbital heat flux analogue means is fixed by screws in; Park described in described metal baffle is fixed by screws on dolly; Described demarcation analog board upward side is provided with electric heater, temperature sensor, thermal control coating and heat insulation-type heat flow meter successively, the coated described heat-barrier material of described demarcation simulation back; Described dolly of parking pushes in described vacuum tank along guide rail.
The present invention also provides a kind of vacuum to inhale wave mode Orbital heat flux analogue means heat flux simulation scaling method, it is characterized in that, comprises the following steps:
Step one, according to preset calibrations simulating piece surface temperature, absorb heat flow density in conjunction with demarcation simulating piece superficial theory, determine that electric heater applies heat flow density, power up to electric heater;
Step 2, according to theoretical absorption heat flow density and inhale wave mode Orbital heat flux analogue means heat exchanging relation, determine to inhale wave mode Orbital heat flux analogue means temperature control desired value;
Step 3, with the temperature control desired value described in step 2, adopt closed loop control algorithm, make the temperature stabilization of suction wave mode Orbital heat flux analogue means in desired value;
After step 4, operating mode balance, judge, if demarcate simulating piece surface temperature, comparatively preset temperature is low, illustrates and inhales wave mode Orbital heat flux analogue means heat flux simulation deficiency; If demarcate simulating piece surface temperature higher than preset temperature, illustrate that suction wave mode Orbital heat flux analogue means heat flux simulation is too much;
If step 5 demarcates simulating piece surface temperature below or above preset temperature, then slowly wave mode Orbital heat flux analogue means temperature control value is inhaled in adjustment, makes demarcation simulating piece surface temperature equal preset temperature value;
If step 6 demarcates simulating piece temperature equal preset temperature, then skip step 5, actual absorption heat flow density, heat flow meter temperature, demarcation simulating piece surface temperature data under acquisition balance condition;
Step 7, repetition step one, two, three, four, five, six, until operating condition of test terminates;
Step 8, by least square fitting, obtain actual absorption heat flow density, heat flow meter temperature, demarcate corresponding relation between simulating piece surface temperature three.
Preferably, inhale the electric current of wave mode Orbital heat flux analogue means, heat flow meter response under also comprising record different heating power in described step 6 and demarcate the response of simulating piece, the difference obtaining actual absorption heat flow density and arrive between heat flow density.
Compared with prior art, the present invention has following beneficial effect: (1) the present invention meets the requirement of suction wave mode Orbital heat flux analogue means heat flux simulation; (2) the present invention obtains the corresponding relation between actual absorption heat flow density, heat flow meter temperature, product surface temperature three, and inhaling wave mode Orbital heat flux analogue means Orbital heat flux modeling scheme for vacuum thermal test provides foundation, improves test reliability.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the theory diagram that vacuum of the present invention inhales wave mode Orbital heat flux analogue means heat flux simulation calibration system.
Fig. 2 is the schematic diagram of the demarcation simulating piece heat exchanging relation that the present invention adopts.
Fig. 3 is the process flow diagram that vacuum of the present invention inhales wave mode Orbital heat flux analogue means heat flux simulation scaling method.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
As shown in Figure 1, vacuum of the present invention is inhaled wave mode Orbital heat flux analogue means heat flux simulation calibration system and is comprised suction wave mode Orbital heat flux analogue means 1, demarcates simulating piece 2, metal baffle 3, parks dolly 4, vacuum tank 5, and the vertical range between described suction wave mode Orbital heat flux analogue means 1 and described demarcation analog board 2, horizontal range are 460mm; Park on dolly 4 described in described suction wave mode Orbital heat flux analogue means 1 is fixed by screws in; Park described in described metal baffle 3 is fixed by screws on dolly 4; Described demarcation analog board 2 upward side is provided with electric heater, temperature sensor, thermal control coating and heat insulation-type heat flow meter successively, the coated described heat-barrier material in described demarcation analog board 2 back side; Described dolly 4 of parking pushes in described vacuum tank 5 along guide rail.
See Fig. 2, from demarcation simulating piece heat exchanging relation, after demarcating simulating piece equalized temperature, electric heater applies heat flow density q0 and equals to demarcate simulating piece radiant heat flux density q2 with demarcation simulating piece Surface absorption heat flow density q1 sum.According to preset calibrations simulating piece surface temperature T, absorb heat flow density q1 in conjunction with demarcation simulating piece superficial theory, determine that electric heater applies heat flow density q0, for electric heater heat protocol provides foundation.
See Fig. 3, vacuum of the present invention is inhaled wave mode Orbital heat flux analogue means heat flux simulation scaling method and is comprised the following steps:
Step one, according to preset calibrations simulating piece surface temperature, absorb heat flow density in conjunction with demarcation simulating piece superficial theory, determine that electric heater applies heat flow density, power up to electric heater;
Step 2, according to theoretical absorption heat flow density and inhale wave mode Orbital heat flux analogue means heat exchanging relation, determine to inhale wave mode Orbital heat flux analogue means temperature control desired value;
Step 3, with the temperature control desired value described in step 2, adopt closed loop control algorithm, make the temperature stabilization of suction wave mode Orbital heat flux analogue means in desired value;
After step 4, operating mode balance, judge, if demarcate simulating piece surface temperature, comparatively preset temperature is low, illustrates and inhales wave mode Orbital heat flux analogue means heat flux simulation deficiency; If demarcate simulating piece surface temperature higher than preset temperature, illustrate that suction wave mode Orbital heat flux analogue means heat flux simulation is too much;
If step 5 demarcates simulating piece surface temperature below or above preset temperature, then slowly wave mode Orbital heat flux analogue means temperature control value is inhaled in adjustment, makes demarcation simulating piece surface temperature equal preset temperature value;
If step 6 demarcates simulating piece temperature equal preset temperature, then skip step 5, actual absorption heat flow density, heat flow meter temperature, demarcation simulating piece surface temperature data under acquisition balance condition; Wherein, inhale the electric current of wave mode Orbital heat flux analogue means, heat flow meter response under also comprising record different heating power in described step 6 and demarcate the response of simulating piece, the difference obtaining actual absorption heat flow density and arrive between heat flow density.
Step 7, repetition step one, two, three, four, five, six, until operating condition of test terminates;
Step 8, by least square fitting, obtain actual absorption heat flow density, heat flow meter temperature, demarcate corresponding relation between simulating piece surface temperature three.
The present invention is whether the heat flux simulation of checking suction wave mode Orbital heat flux analogue means meets aircraft vacuum thermal test demand, obtain and inhale wave mode Orbital heat flux analogue means actual absorption hot-fluid and arrive the difference absorbing hot-fluid, and actual absorption hot-fluid, fit correlation between heat flow meter temperature and product surface temperature three, inhale wave mode Orbital heat flux analogue means heat flux simulation for follow-up vacuum thermal test and control foundation is provided, improve vacuum thermal test heat flux simulation precision, improve test reliability.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (3)
1. a vacuum inhales wave mode Orbital heat flux analogue means heat flux simulation calibration system, it is characterized in that, comprise suction wave mode Orbital heat flux analogue means, demarcate simulating piece, metal baffle, park dolly, vacuum tank, the vertical range between described suction wave mode Orbital heat flux analogue means and described demarcation analog board, horizontal range are 460mm; Park on dolly described in described suction wave mode Orbital heat flux analogue means is fixed by screws in; Park described in described metal baffle is fixed by screws on dolly; Described demarcation analog board upward side is provided with electric heater, temperature sensor, thermal control coating and heat insulation-type heat flow meter successively, the coated described heat-barrier material of described demarcation simulation back; Described dolly of parking pushes in described vacuum tank along guide rail.
2. vacuum inhales a wave mode Orbital heat flux analogue means heat flux simulation scaling method, it is characterized in that, comprises the following steps:
Step one, according to preset calibrations simulating piece surface temperature, absorb heat flow density in conjunction with demarcation simulating piece superficial theory, determine that electric heater applies heat flow density, power up to electric heater;
Step 2, according to theoretical absorption heat flow density and inhale wave mode Orbital heat flux analogue means heat exchanging relation, determine to inhale wave mode Orbital heat flux analogue means temperature control desired value;
Step 3, with the temperature control desired value described in step 2, adopt closed loop control algorithm, make the temperature stabilization of suction wave mode Orbital heat flux analogue means in desired value;
After step 4, operating mode balance, judge, if demarcate simulating piece surface temperature, comparatively preset temperature is low, illustrates and inhales wave mode Orbital heat flux analogue means heat flux simulation deficiency; If demarcate simulating piece surface temperature higher than preset temperature, illustrate that suction wave mode Orbital heat flux analogue means heat flux simulation is too much;
If step 5 demarcates simulating piece surface temperature below or above preset temperature, then slowly wave mode Orbital heat flux analogue means temperature control value is inhaled in adjustment, makes demarcation simulating piece surface temperature equal preset temperature value;
If step 6 demarcates simulating piece temperature equal preset temperature, then skip step 5, actual absorption heat flow density, heat flow meter temperature, demarcation simulating piece surface temperature data under acquisition balance condition;
Step 7, repetition step one, two, three, four, five, six, until operating condition of test terminates;
Step 8, by least square fitting, obtain actual absorption heat flow density, heat flow meter temperature, demarcate corresponding relation between simulating piece surface temperature three.
3. vacuum according to claim 2 inhales wave mode Orbital heat flux analogue means heat flux simulation scaling method, it is characterized in that, inhale the electric current of wave mode Orbital heat flux analogue means, heat flow meter response under also comprising record different heating power in described step 6 and demarcate the response of simulating piece, the difference obtaining actual absorption heat flow density and arrive between heat flow density.
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Cited By (5)
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| CN104535605A (en) * | 2014-11-27 | 2015-04-22 | 上海卫星装备研究所 | Heat flux density calibration system for vacuum wave-absorbing type external heat flux analog device |
| CN106081174A (en) * | 2016-07-26 | 2016-11-09 | 上海卫星装备研究所 | A kind of Orbital heat flux analog and hot-fluid control method thereof |
| CN106314831A (en) * | 2016-08-18 | 2017-01-11 | 浙江大学 | Heat balance test external heat flux simulation method |
| CN106644178A (en) * | 2016-11-21 | 2017-05-10 | 中国电子科技集团公司第四十八研究所 | Heat flux sensor calibration method and device |
| CN106647873B (en) * | 2016-07-20 | 2019-06-14 | 北京卫星环境工程研究所 | The suction wave Orbital heat flux simulation system temperature control method of Large Spacecraft antenna performance test |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104535605A (en) * | 2014-11-27 | 2015-04-22 | 上海卫星装备研究所 | Heat flux density calibration system for vacuum wave-absorbing type external heat flux analog device |
| CN106647873B (en) * | 2016-07-20 | 2019-06-14 | 北京卫星环境工程研究所 | The suction wave Orbital heat flux simulation system temperature control method of Large Spacecraft antenna performance test |
| CN106081174A (en) * | 2016-07-26 | 2016-11-09 | 上海卫星装备研究所 | A kind of Orbital heat flux analog and hot-fluid control method thereof |
| CN106081174B (en) * | 2016-07-26 | 2018-06-26 | 上海卫星装备研究所 | A kind of Orbital heat flux simulator and its hot-fluid control method |
| CN106314831A (en) * | 2016-08-18 | 2017-01-11 | 浙江大学 | Heat balance test external heat flux simulation method |
| CN106314831B (en) * | 2016-08-18 | 2018-08-21 | 浙江大学 | A kind of method of heat balance test Orbital heat flux simulation |
| CN106644178A (en) * | 2016-11-21 | 2017-05-10 | 中国电子科技集团公司第四十八研究所 | Heat flux sensor calibration method and device |
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