CN103434652A - Method of forming and detecting supercooled water droplet in ground ice-formation condition simulation system, and target simulation device - Google Patents
Method of forming and detecting supercooled water droplet in ground ice-formation condition simulation system, and target simulation device Download PDFInfo
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Abstract
The invention method of forming and detecting a supercooled water droplet used in a ground ice-formation condition simulation system, and the supercooled water droplet is formed by water mist sprayed by an atomizing device. The method comprises the following steps of initially determining water supply temperature and gas supply temperature of the atomizing device, and starting the atomizing device so as to spray the water mist; after the atomizing device works stably, placing a ground target simulation device at a test target position and/or a place close to the test target position, wherein the ground target simulation device comprises at least one simulation target, and the simulation target comprises a test surface facing to the water mist; adjusting the gas supply temperature and/or the water supply temperature according to a freezing state of the water mist deposited the test surface of the ground target simulation target on the test target position and/or the place close to the test target position, so as to enable the water droplet of the water mist at the target simulation target to just reach the supercooled water droplet state of the test requirements. The invention further provides a test method of the supercooled water droplet used in the method of forming the supercooled water droplet, and the ground target simulation device used in the test method.
Description
Technical field
The super-cooling waterdrop that the present invention relates to a kind of ice-formation condition on ground analog machine forms and inspection technology, especially, relate to a kind of ground than under low ambient temperature, adopt the adjustable atomizer of supply water temperature and feed air temperature to form super-cooling waterdrop to simulate the icing meteorological conditions in ground under certain cold day ambient temperature conditions.
Background technology
The overall process of aircraft development generally comprises the double teachers such as pre-development, engineering development, detail design, trial-production comprehensively, Airworthiness Certification.After Airworthiness Certification, mean that the safety Design of aircraft is approved, also just obtained " birth approval certificate ".After taking this card, aircraft just can enter the substantial phase of batch manufacturing.
" CCAR " the 25th (CCAR-25) seaworthiness clause must carry out testing to verify its anti-icing performance under ground simulation ice-formation condition for the anti-icing proposition of engine inlets, concrete clause thes contents are as follows: CCAR25.1093 (b) (2): every turbine engine must be in temperature-1～-9 ℃ (15～30 °F), Liquid water content is not less than 0.3g/m3, water is under the atmospheric conditions of water droplet state (its mean effective diameter is not less than 20 microns), carry out ground idle speed running 30 minutes, now can be for the bleed of Engine Anti-Ice in its critical conditions, and have no adverse effect, do of short duration running with rear engine with take-off power (thrust).During above-mentioned 30 minutes idle-runnings, driving engine can strengthen rotating speed to mid power (thrust) off and on by the acceptable mode of seaworthiness authorities.For above-mentioned requirements, during the operation of ground icing simulation equipment, how assurance equipment produces the super-cooling waterdrop met the demands seems more crucial.
Ice-formation condition under natural conditions can not meet above-mentioned test requirements document, and for this reason, field of aerospace adopts indoor wind tunnel test to solve the defect of the ice-formation condition under natural conditions.Saying simply, is exactly the relativity principle according to motion, and the model of aircraft or material object are fixed in the ground artificial environment, artificially manufactures the air flow stream mistake, with the state of flight of various complexity in this analog space, obtains test figures.In indoor wind tunnel laboratory, various parameters can be controlled according to test requirements document, to arrive test requirements document.
This wind tunnel laboratory can effectively solve that to find the cycle progress that nature ice-formation condition brings long, and natural ice-formation condition not exclusively and the test requirements document problem of mating.But involving great expense of indoor wind tunnel laboratory.
For this reason, the place that the scientific research personnel of field of aerospace approaches test requirements document to natural conditions is transformed, with the icing environment of manual simulation, so both can effectively solve and find the long problem of cycle progress that nature ice-formation condition is brought, solve again the expensive problem of utilizing on the expense that indoor wind tunnel laboratory tested.For example, the Chinese patent application that the denomination of invention that publication No. is CN102582843A is " simulation system for ice-formation condition on ground ", be an example of natural environment manual simulation ice-formation condition.
But this while utilizing outdoor natural environment to carry out manual simulation's ice-formation condition, some factor is difficult to control, thereby causes the parameter of test unstable.For this reason, for the state of super-cooling waterdrop, be difficult to accurately control, especially can't check the whether Pass Test requirement of formed super-cooling waterdrop, finally affect test results.For example, in this Patent Application Publication, only mention " can be provided with the ice-formation condition tester in measure and control device, in order to the icing parameter in read test environment at any time, this is of great advantage concerning carrying out exactly smoothly the ice-formation condition on ground analogue test ".But " the icing parameter in the read test environment at any time " in this article can not guarantee that the water smoke that atomising installation ejects can produce in target location the super-cooling waterdrop that meets test request.
Therefore, in order to be tested under the ground simulation ice-formation condition that can require in Pass Test, with the anti-icing performance of checking engine inlets lip, the satisfactory super-cooling waterdrop of water smoke that the atomizer in must strict Control experiment environment sprays.The supply water temperature of atomizer and feed air temperature can affect the supercooled state of water droplet.For this reason, how to regulate supply water temperature and the feed air temperature of atomizer, thereby produce the super-cooling waterdrop met the demands, become the key of problem.
Summary of the invention
Therefore, for the super-cooling waterdrop of Pass Test requirement is provided, according to an aspect of the present invention, a kind of method that provides super-cooling waterdrop for simulation system for ice-formation condition on ground to form, the water smoke that described super-cooling waterdrop is ejected by atomising installation forms, and described method comprises the steps:
Just determine supply water temperature and the feed air temperature of atomising installation, the startup atomising installation is with along the injection direction water spray; After the working stability of the device of spraying, place the terrain object analog machine near test objective position and/or distance test (DT) target location, described terrain object analog machine comprises at least one simulation target, and described simulation target comprises the test surfaces of the water smoke in the face of spraying along injection direction; The icing state of the water smoke deposited on the test surfaces according to test objective position and/or near terrain object simulation target, regulate feed air temperature and/or supply water temperature, make the water droplet of the water smoke at target simulation target place just in time reach the super-cooling waterdrop state of test requirements document.
The method formed according to above-mentioned super-cooling waterdrop, described at least one simulation target comprises at least three simulation targets, these simulation targets are flat state, the one side is described test surfaces, spaced apart and the end wise setting along the atomized water spray direction of described at least three simulation targets, simultaneously, along the direction perpendicular to described injection direction, laterally stagger at least partly.
The method formed according to above-mentioned super-cooling waterdrop, the described test of described simulation target shows to be dark colour, and the color that makes to be deposited on the water smoke that the test of described simulation target shows presents contrast.
The method formed according to above-mentioned super-cooling waterdrop, along the atomized water spray direction, the interval end wise with about 1m left and right arranges described at least three simulation targets, and laterally staggers at least fully along the direction perpendicular to described injection direction.
The method formed according to above-mentioned super-cooling waterdrop, simulate terrain object after target places as required, approximately, after 3 minutes, observes the icing state of the test surfaces of simulation target, and described icing state comprises any one in following state:
Towards on the test surfaces of simulation target while spraying, while presenting the overflow ice of transparence on test surfaces, show that water droplet temperature is higher higher than the temperature of test requirements document when water smoke;
When water smoke towards on the test surfaces of simulation target while spraying, water droplet had formed and has freezed and form ice crystal before being deposited on test surfaces, make described ice crystal can not be frozen on test surfaces and drop down onto ground, showing that water droplet temperature is on the low side lower than the temperature of test requirements document;
When water smoke, towards on the test surfaces of simulation target while spraying, droplets impact its can be freezed rapidly to the test surfaces of simulating target, now freezes for needle prick shape, is creamy white, and shows the temperature of water droplet temperature Pass Test requirement and suitable.
The method formed according to above-mentioned super-cooling waterdrop, when the icing state table open fire mist temperature on simulation target test surfaces is higher, first that the icing processing on test surfaces is clean, till freezing and be needle prick shape milky ice according to the micro-downward feed air temperature of overflow ice form and/or supply water temperature to this test surfaces subsequently; When the icing state table open fire mist temperature on simulation target test surfaces is low, first that the icing processing on test surfaces is clean, according to the icing situation of this simulation target test surfaces, till micro-rise feed air temperature and/or supply water temperature to surface to be tested freezes and is needle prick shape milky ice.
The method formed according to above-mentioned super-cooling waterdrop, when the icing state table open fire mist temperature on the simulation target test surfaces be observed is higher, till also should freezing and be needle prick shape milky ice according to the micro-downward feed air temperature of icing state on the upstream of the simulation target be observed and/or downstream simulation target test surfaces and/or supply water temperature to the test surfaces be observed; When the icing state table open fire mist temperature on the simulation target test surfaces be observed is low, till the test surfaces that also should be observed according to the upstream of the simulation target be observed and/or the micro-rise feed air temperature of icing state on downstream simulation target test surfaces and/or supply water temperature freezes and is needle prick shape milky ice.
The method formed according to above-mentioned super-cooling waterdrop, also comprise the steps:
Test article is placed on to target location, and atomising installation continues water spray, starts to carry out the test under ice-formation condition.
According to a further aspect of the present invention, provide a kind of method of inspection for the formed super-cooling waterdrop of simulation system for ice-formation condition on ground, in this analog system, the atomising installation water spray is to form described super-cooling waterdrop, and described method comprises the steps:
Place the terrain object analog machine near test objective position and/or distance test (DT) target location, described terrain object analog machine comprises at least one simulation target, and described simulation target comprises the test surfaces of the water smoke in the face of spraying along injection direction; The icing state of the water smoke deposited on the test surfaces according to test objective position and/or near terrain object simulation target, judge whether the water droplet of the water smoke at target simulation target place just in time reaches the super-cooling waterdrop state of test requirements document.
Method of inspection according to above-mentioned super-cooling waterdrop, described at least one simulation target comprises at least three simulation targets, these simulation targets are flat state, the one side is described test surfaces, spaced apart and the end wise setting along the atomized water spray direction of described at least three simulation targets, simultaneously, along the direction perpendicular to described injection direction, laterally stagger at least partly.
According to the method for inspection of above-mentioned super-cooling waterdrop, the test of described simulation target shows to be dark colour, and the color that makes to be deposited on the water smoke that the test of described simulation target shows presents contrast.
According to the method for inspection of above-mentioned super-cooling waterdrop, along the atomized water spray direction, the interval end wise with about 1m left and right arranges described at least three simulation targets, and laterally staggers at least fully along the direction perpendicular to described injection direction.
According to the method for inspection of above-mentioned super-cooling waterdrop, terrain object is simulated after target places as required, approximately, after 3 minutes, observe the icing state of the test surfaces of simulation target, described icing state comprises any one in following state:
Towards on the test surfaces of simulation target while spraying, while presenting the overflow ice of transparence on test surfaces, show that water droplet temperature is higher higher than the temperature of test requirements document when water smoke;
When water smoke towards on the test surfaces of simulation target while spraying, water droplet had formed and has freezed and form ice crystal before being deposited on test surfaces, make described ice crystal can not be frozen on test surfaces and drop down onto ground, showing that water droplet temperature is on the low side lower than the temperature of test requirements document;
When water smoke, towards on the test surfaces of simulation target while spraying, droplets impact its can be freezed rapidly to the test surfaces of simulating target, now freezes for needle prick shape, is creamy white, and shows the temperature of water droplet temperature Pass Test requirement and suitable.
According to the method for inspection of above-mentioned super-cooling waterdrop, when the icing state table open fire mist temperature on simulation target test surfaces is higher, first that the icing processing on test surfaces is clean, treat further to test water smoke.
According to a further aspect of the invention, the terrain object analog machine of the test super-cooling waterdrop used in a kind of method formed at super-cooling waterdrop and the method for inspection at super-cooling waterdrop is provided, described terrain object analog machine comprises at least one simulation target, and described simulation target is flat state and comprises the test surfaces of the water smoke in the face of spraying along injection direction.
According to above-mentioned terrain object analog machine, described at least one simulation target comprises at least three simulation targets, described simulation target is spaced apart and end wise setting along the atomized water spray direction,, along the direction perpendicular to described injection direction, laterally staggers at least partly simultaneously.
According to above-mentioned terrain object analog machine, along the atomized water spray direction, the interval end wise with about 1m left and right arranges described at least three simulation targets, and laterally staggers at least fully along the direction perpendicular to described injection direction.
According to above-mentioned terrain object analog machine, the test of described simulation target shows to be dark colour, and the color that makes to be deposited on the water smoke that the test of described simulation target shows presents contrast.
The present invention has advantages of as follows: the method by adopting the super-cooling waterdrop for simulation system for ice-formation condition on ground of the present invention to form, for the terrain object analog machine of the test super-cooling waterdrop that uses in the method for inspection of the formed super-cooling waterdrop of simulation system for ice-formation condition on ground and the method formed at super-cooling waterdrop and the method for inspection at super-cooling waterdrop, although tested, also can meet test requirements document under ground simulation ice-formation condition.
The accompanying drawing explanation
Fig. 1 shows that super-cooling waterdrop in icing simulation equipment of the present invention forms and for testing the whether birds-eye view of the concrete implementation system that Pass Test requires of water droplet that atomising installation is ejected into experimental enviroment;
Fig. 2 is the block diagram of implementation system shown in Fig. 1,
Shown in Fig. 3 is the fog system control principle drawing for Fig. 1 implementation system.
The specific embodiment
As shown in Figure 1, in the experimental enviroment under a ground simulation ice-formation condition, provide the atomising installation 10 of a formation water smoke, this atomising installation 10 comprises a plurality of spraying rakes 101, and this spraying rake 101 ejects drop-shaped water smoke 13 along injection direction A.For example, in test article (equipment of being tested in this experimental enviroment, aero-engine) drop target position, or near, terrain object analog machine 20 is set, and this terrain object analog machine 20 comprises a plurality of simulation targets, comprises in this embodiment three simulation target 20a, 20b, 20c.
As shown in Figure 1, the direction of arrow is vertical for spraying rake 101 spraying air flow line A(), in figure, left side is for producing the spraying rake 101 of water smoke, each target 20a that right side is terrain object analog machine 20,20b, 20c, for than making target 20a under low ambient temperature, 20b, 20c is upper, and the state that freezes can clear identification, by target 20a, 20b, the windward side of 20c, the face facing to arrow in figure is painted with dark color, preferably black.Three target 20a in figure, 20b, 20c is tabular, the tabular edge is perpendicular to spraying air flow line A, it is Y-direction, extend, these targets 20a, 20b, 20c is along spraying air flow line A end wise, it is directions X, place at interval, parallel to each other, along the direction (being horizontal Y) perpendicular to spraying air flow line A, stagger each other simultaneously, preferably stagger fully, make along spraying air flow line A and can see described three target simulation target 20a, the test surfaces (being the water smoke depositional plane) of the one side facing to water smoke of each of 20b and 20c, make spraying rake 101 water smokes that eject 13 can be deposited on three target simulation target 20a that are positioned over vertical diverse location, on the water smoke depositional plane of 20b and 20c.As required, the quantity of target simulation target can be less than three or more than three, not only staggers on Y-direction each other and can arrange compartment of terrain.
Total as follows of the step of this test:
1) just determine supply water temperature and the feed air temperature of atomising installation 10, start atomising installation 10;
2) after the work of the device 10 of spraying is relatively stable, in the test objective position and/or distance test (DT) target location annex place terrain object simulation target 20a, 20b, 20c with the interval end wise of about 1m left and right;
3) according to target place and/or near terrain object simulation target 20a, 20b, the icing state on the water smoke depositional plane of 20c, fine setting feed air temperature and/or supply water temperature, make the water droplet at target simulation target place just in time reach the super-cooling waterdrop state of test requirements document;
4) test article is placed on to target location and starts to carry out the test under ice-formation condition.
Below according to describing the process of this test shown in Fig. 1 in detail.
1) open atomising installation 10
According to test requirements document, after feed air temperature and supply water temperature are adjusted to initial value, open ground atomising installation 10, make spraying rake 101 water sprays 13.
2) near Offered target analog machine 20 test objective position and/or distance test (DT) target location
After the work of the device 10 of spraying is relatively stable, according to the position of target test article, target test article position and/or near, place at least one target simulation target, preferably, interval end wise with about 1m left and right is put three target simulation target 20a, 20b, 20c, putting of these target simulation targets makes them be spaced apart from each other at vertical X, laterally Y staggers each other, does not interfere with each other, thereby all there is no overlapping part at vertical and horizontal.
3) adjust feed air temperature and supply water temperature according to the simulation target state that freezes.
Terrain object is simulated to target 20a, 20b, 20c places according to above-mentioned requirements, approximately, after 3 minutes, observes simulation target 20a, 20b, 20c is surperficial 21a windward, 21b, the icing state of 21c.
For the super-cooling waterdrop of different temperatures, simulation target 20a, 20b, the test surfaces 21a of 20c, 21b, 21c there will be one of following three kinds of icing states:
A) when water droplet temperature is higher, higher than test requirements document, droplets impact its in water smoke is at simulation target test surfaces 21a, 21b, 21c(is the water smoke deposition surface) can occur after upper dirty, owing to freezing in the dirty process of effect of environmental temperature water droplet, this becomes overflow ice, and this ice generally is transparence subsequently;
B) when water droplet temperature is on the low side, lower than test requirements document, water droplet in water smoke 13 is impinging upon simulation target test surfaces 21a, 21b, form ice crystal with regard to freezing in motion process before 21c, thereby running into simulation target test surfaces 21a, 21b, can not be frozen in test surfaces after 21c, so that drop down onto ground;
C) when water droplet temperature is suitable, it is the Pass Test requirement, water droplet in water smoke is impinging upon simulation target test surfaces 21a, 21b, and the motion process water droplet temperature before 21c reduces gradually, just in time reach the super-cooling waterdrop met the demands when arriving target location (being the position at target simulation target place), now super-cooling waterdrop clashes into to simulating target test surfaces 21a, 21b, 21c and freezing rapidly, now freeze for needle prick shape, be creamy white.
According to icing mechanism described above, icing state by judgement target location simulation target test surfaces just can be known the supercooled state of the water droplet in water smoke, thereby adjust feed air temperature and/or the supply water temperature of atomising installation 10, temperature change value shows by temperature transmitter 104, embodiment of the schematic diagram of atomising installation 10 as shown in Figure 3, comprising: a plurality of spraying rakes 101, corrosion-resistant steel electromagnetic valve 102, fog system air supply pipe 103, temperature transmitter 104, pressure transformer 105, stainless steel pressure table 106, air filter 107, shutoff valve 108, freeing pipe 109, fog system feed pipe 110, return water pipe 111, fog system drain hose 112, source of the gas 113, water source 114.
In test process, note following aspect.
(1) if target simulation target 20a, 20b, the test surfaces 21a of 20c, 21b, the icing transparence overflow ice that is of 21c, the water smoke temperature that explanation spraying rake 101 produces is higher, cause necessarily than under low ambient temperature, when arriving target location, water droplet can not form the super-cooling waterdrop met the demands, now need first by test surfaces 21a, 21b, the icing processing of 21c is clean, subsequently according to the micro-downward feed air temperature of overflow ice form or supply water temperature, fine setting can not make to supply water in principle and supply gas pressure produces larger variation, surperficial 21a to be tested, 21b, till 21c freezes and is needle prick shape milky ice.
(2) if test surfaces 21a, 21b, 21c produces obviously and freezes, and there is ice crystal to drop down onto ground, illustrate that the water smoke 13 that spraying rake 101 produces freezes before not arriving target location, now need first by test surfaces 21a, 21b, the icing processing of 21c is clean, icing situation according to upstream, target location simulation target test surfaces, micro-rise feed air temperature and/or supply water temperature, fine setting can not make to supply water in principle and supply gas pressure produces larger variation, till surface to be tested freezes and is needle prick shape milky ice.
4) the target test article is placed and required position to start to be tested
By above-mentioned steps 3) method, after the water droplet of determining target location reaches the super-cooling waterdrop met the demands, remove terrain object simulation target 20a, 20b, 20c, target test article (not shown) is placed on to the target location of adjusting, starts test article is carried out to the ground simulation icing tests.
By the method proposed in the present invention, can form a kind of super-cooling waterdrop that freezes equipment and meet the demands for ground simulation, and then meet the required ice-formation condition of target test article, the method easy enforcement simple to operate.Adopt this kind of method can either form super-cooling waterdrop, can control again and state that can test-target position super-cooling waterdrop, for the simulation ground meteorological conditions of freezing provides safeguard.
Therefore, thereby in the present invention, adopt feed air temperature and the supply water temperature of constantly adjusting atomising installation to produce the super-cooling waterdrop met the demands, simultaneously by the test target range or near employing ground simulation supposition target verify the state of diverse location place water droplet, supply water temperature and the feed air temperature of the nozzle by continuous adjustment atomising installation, make test objective position water droplet reach the super-cooling waterdrop met the demands, for icing simulation test under surface condition provides safeguard.
Above-mentioned exemplary embodiment shows an embodiment in the technical scheme that solves the technical problem to be solved in the present invention.Under the example of this embodiment, other equivalence and similar means that meet the principle of the invention all belong in the scope of protection of the invention.Inventive principle of the present invention is, make the atomising installation water spray, with the state of the formed water droplet of simulation target test water smoke, according to the state of the super-cooling waterdrop on the test surfaces that is deposited on the simulation target, control the parameter of atomising installation, so that super-cooling waterdrop meets test request.
Claims (18)
1. the method that the super-cooling waterdrop for simulation system for ice-formation condition on ground forms, the water smoke that described super-cooling waterdrop is ejected by atomising installation (13) forms, and described method comprises the steps:
1) just determine supply water temperature and the feed air temperature of atomising installation (10), startup atomising installation (10) is with along injection direction (A) water spray (13);
2) after the working stability of the device of spraying (10), place terrain object analog machine (20) near test objective position and/or distance test (DT) target location, described terrain object analog machine (20) comprises at least one simulation target (20a, 20b, 20c), described simulation target (20a, 20b, 20c) comprise the test surfaces (21a, 21b, 21c) of the water smoke (13) in the face of spraying along injection direction (A);
3) according to test objective position and/or near terrain object simulation target (20a, 20b, test surfaces (21a 20c), 21b, 21c) the icing state of the water smoke (13) of upper deposition, regulate feed air temperature and/or supply water temperature, make the water droplet of the water smoke at target simulation target place just in time reach the super-cooling waterdrop state of test requirements document.
2. method as claimed in claim 1, it is characterized in that, in step 2) in, described at least one simulation target (20a, 20b, 20c) comprise that at least three are simulated target (20a, 20b, 20c), these simulation targets are flat state, and the one side is described test surfaces (21a, 21b, 21c), spaced apart and the end wise setting along atomized water spray direction (A) of described at least three simulation targets (20a, 20b, 20c), simultaneously, along the direction perpendicular to described injection direction (A), laterally stagger at least partly.
3. method as claimed in claim 2, is characterized in that, the described test surfaces (21a, 21b, 21c) of described simulation target (20a, 20b, 20c) is dark colour, and the color that makes to be deposited on the water smoke that the test of described simulation target shows presents contrast.
4. method as claimed in claim 2, it is characterized in that described at least three simulation targets (20a, 20b, 20c) along atomized water spray direction (A), the interval end wise with about 1m left and right arranges, and laterally staggers at least fully along the direction perpendicular to described injection direction (A).
5. method as claimed in claim 1, is characterized in that, in step 3), terrain object is simulated to target (20a, 20b, 20c) place as required after, approximately after 3 minutes, observe simulation target (20a, 20b, 20c) test surfaces (21a, 21b, icing state 21c), described icing state comprises any one in following state:
A) when water smoke (13) sprays towards the test surfaces (21a, 21b, 21c) of simulation target is upper, while presenting the overflow ice of transparence on test surfaces (21a, 21b, 21c), show that water droplet temperature is higher higher than the temperature of test requirements document;
B) as the test surfaces (21a of water smoke (13) towards the simulation target, 21b, while 21c) above spraying, water droplet is being deposited on test surfaces (21a, 21b, formed before 21c) upper and freezed and form ice crystal, made described ice crystal can not be frozen on test surfaces and drop down onto ground, shown that water droplet temperature is on the low side lower than the temperature of test requirements document;
C) as the test surfaces (21a of water smoke (13) towards the simulation target, 21b, while 21c) above spraying, droplets impact its is to the test surfaces (21a that simulates target, 21b, 21c) upper can freezing rapidly, now freeze for needle prick shape, be creamy white, show the temperature of water droplet temperature Pass Test requirement and suitable.
6. method as claimed in claim 5, is characterized in that,
When the icing state table open fire mist temperature on simulation target test surfaces is higher, first that the icing processing on test surfaces is clean, till freezing and be needle prick shape milky ice according to the micro-downward feed air temperature of overflow ice form and/or supply water temperature to this test surfaces subsequently;
When the icing state table open fire mist temperature on simulation target test surfaces is low, first that the icing processing on test surfaces is clean, till freezing and be needle prick shape milky ice according to the micro-rise feed air temperature of the icing situation of this simulation target test surfaces and/or supply water temperature to surface to be tested.
7. method as claimed in claim 6, is characterized in that,
When the icing state table open fire mist temperature on the simulation target test surfaces be observed is higher, till also should freezing and be needle prick shape milky ice in conjunction with the micro-downward feed air temperature of icing state on the upstream of the simulation target be observed and/or downstream simulation target test surfaces and/or supply water temperature to the test surfaces be observed;
When the icing state table open fire mist temperature on the simulation target test surfaces be observed is low, till the test surfaces that also should be observed in conjunction with the upstream of the simulation target be observed and/or the micro-rise feed air temperature of icing state on downstream simulation target test surfaces and/or supply water temperature freezes and is needle prick shape milky ice.
8. method as claimed in claim 1, is characterized in that, after described step 3), also comprises the steps:
Test article is placed on to target location, and atomising installation (10) continues water spray (13), starts to carry out the test under ice-formation condition.
9. the method for inspection for the formed super-cooling waterdrop of simulation system for ice-formation condition on ground, in this analog system, the atomising installation water spray is to form described super-cooling waterdrop, and described method comprises the steps:
A) place terrain object analog machine (20) near test objective position and/or distance test (DT) target location, described terrain object analog machine (20) comprises at least one simulation target (20a, 20b, 20c), described simulation target comprises the test surfaces (21a of the water smoke (13) in the face of spraying along injection direction (A), 21b, 21c);
B) according to test objective position and/or near terrain object simulation target (20a, 20b, test surfaces (20a 20c), 20b, 20c) the icing state of the water smoke (13) of upper deposition, judge whether the water droplet of the water smoke at target simulation target place just in time reaches the super-cooling waterdrop state of test requirements document.
10. method as claimed in claim 9, it is characterized in that, in step a), described at least one simulation target (20a, 20b, 20c) comprise that at least three are simulated target (20a, 20b, 20c), these simulation targets are flat state, and the one side is described test surfaces (21a, 21b, 21c), spaced apart and the end wise setting along atomized water spray direction (A) of described at least three simulation targets (20a, 20b, 20c), simultaneously, along the direction perpendicular to described injection direction (A), laterally stagger at least partly.
11. method, is characterized in that as claimed in claim 10, the test of described simulation target shows to be dark colour, and the color that makes to be deposited on the water smoke that the test of described simulation target shows presents contrast.
12. method as claimed in claim 10, it is characterized in that described at least three simulation targets (20a, 20b, 20c) along atomized water spray direction (A), the interval end wise with about 1m left and right arranges, and laterally staggers at least fully along the direction perpendicular to described injection direction (A).
13. method, is characterized in that as claimed in claim 9, in step b), terrain object is simulated to target (20a, 20b, 20c) place as required after, approximately after 3 minutes, observe simulation target (20a, 20b, 20c) test surfaces (21a, 21b, icing state 21c), described icing state comprises any one in following state:
A) when water smoke (13) sprays towards the test surfaces (21a, 21b, 21c) of simulation target is upper, while presenting the overflow ice of transparence on test surfaces (21a, 21b, 21c), show that water droplet temperature is higher higher than the temperature of test requirements document;
B) as the test surfaces (21a of water smoke (13) towards the simulation target, 21b, while 21c) above spraying, water droplet is being deposited on test surfaces (21a, 21b, formed before 21c) upper and freezed and form ice crystal, made described ice crystal can not be frozen on test surfaces and drop down onto ground, shown that water droplet temperature is on the low side lower than the temperature of test requirements document;
C) as the test surfaces (21a of water smoke (13) towards the simulation target, 21b, while 21c) above spraying, droplets impact its is to the test surfaces (21a that simulates target, 21b, 21c) upper can freezing rapidly, now freeze for needle prick shape, be creamy white, show the temperature of water droplet temperature Pass Test requirement and suitable.
14. method, is characterized in that as claimed in claim 13,
When the icing state table open fire mist temperature on simulation target test surfaces is higher, first that the icing processing on test surfaces is clean, treat further to test water smoke.
15. the terrain object analog machine of the test super-cooling waterdrop used in the method formed at super-cooling waterdrop as claimed in claim 1 and the method for inspection at super-cooling waterdrop as claimed in claim 9, described terrain object analog machine comprises at least one simulation target (20a, 20b, 20c), described simulation target is flat state and comprises the test surfaces (21a of the water smoke (13) in the face of spraying along injection direction (A), 21b, 21c).
16. terrain object analog machine as claimed in claim 15, it is characterized in that, described at least one simulation target (20a, 20b, 20c) comprise that at least three are simulated target (20a, 20b, 20c), described simulation target is spaced apart and end wise setting along atomized water spray direction (A),, along the direction perpendicular to described injection direction (A), laterally staggers at least partly simultaneously.
17. terrain object analog machine as claimed in claim 16, it is characterized in that, described at least three simulation target (20a, 20b, 20c) along atomized water spray direction (A), the interval end wise with about 1m left and right arranges, and laterally staggers at least fully along the direction perpendicular to described injection direction (A).
18. method, is characterized in that as claimed in claim 17, the test of described simulation target shows to be dark colour, and the color that makes to be deposited on the water smoke that the test of described simulation target shows presents contrast.
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