CN107153167A - A kind of aircraft magnetic field ground test method - Google Patents
A kind of aircraft magnetic field ground test method Download PDFInfo
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- CN107153167A CN107153167A CN201610118336.7A CN201610118336A CN107153167A CN 107153167 A CN107153167 A CN 107153167A CN 201610118336 A CN201610118336 A CN 201610118336A CN 107153167 A CN107153167 A CN 107153167A
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- aircraft
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- magnetometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
Abstract
The present invention is aircraft magnetic field measuring technology, is related to a kind of aircraft magnetic field ground test method.The earth is a huge magnetic field.Easily being magnetized if in earth's magnetic field, and produce the magnetic field that direction is different, intensity is different around it makes the phenomenon that original ground surface magnetic field changes, abbreviation magnetic anomaly phenomenon.The complexity in exactly this interference magnetic field, makes us to carry out real-time magnetic compensation to aircraft, and the key of magnetic compensation seeks to obtain the data of aircraft magnetic field environment, that is, obtains aircraft magnetic field.The present invention proposes a kind of aircraft magnetic field environmental grounds testing experiment method, and is verified on certain type machine, and the data measured used in the exploitation of certain type magnetic anomaly detection instrument, achieve innovative achievements.
Description
Technical field
The present invention is aircraft magnetic field measuring technology, is related to a kind of aircraft magnetic field ground test method.
Background technology
The earth is a huge magnetic field.Easily it is magnetized, and is produced around it if in earth's magnetic field
The magnetic field that raw direction is different, intensity is different makes the phenomenon that original ground surface magnetic field changes, abbreviation magnetic anomaly
Phenomenon.
The stationary magnetic field that this interference is produced comprising magnetisable material on aircraft, some soft magnetism objects are by earth's magnetic field
Magnetize the induced field produced, one on the eddy current magnetism and aircraft that cutting is produced during aircraft conductor flight measurement
The randomness magnetic field that a little dynamic components are produced, their interference strength changes at any time.Exactly this interference magnetic
The complexity of field, makes us to carry out real-time magnetic compensation to aircraft, and the key of magnetic compensation seeks to obtain
The data of aircraft magnetic field environment, that is, obtain aircraft magnetic field.
The content of the invention
It is an object of the invention to provide it is a kind of can ground survey aircraft magnetic field method of testing.
In order to solve the above-mentioned technical problem, following technical scheme, a kind of aircraft magnetic field ground test side are employed
Method, comprises the following steps：
The first step, select at one that magnetic field is tranquil and the environmental area without outer interference is as aircraft magnetic field measured zone；
Second step, erection geomagnetic diurnal change station
It is outer in 100 meters of the tested aircraft measured zone of distance, geomagnetic diurnal change station is set up, in test process, is seen
Geomagnetic diurnal change is examined, if any exception, this test stops, data invalid；
3rd step, the measurement of earth's magnetic field background
3 fixing points are no less than along the region North and South direction and east-west direction are uniform respectively in measured zone,
And made a mark with marker pen on ground, the earth's magnetic field for completing Chosen Point with magnetometer before airfield approach, which is worth, to be surveyed
Amount；
4th step, static test
Aircraft is dragged into field, aircraft is remained static, aircraft is adjusted to the southern tail north of head to starting
Machine is not driven, and closes all electronic equipment power sources, with magnetometer respectively along fuselage length direction every 0.3m~
0.5m test point is measured, and often point sampling 3 times, takes stationary value to record every time；
Tested in 5th step, aircraft energization cabin
It is electric on all electronic equipments in aircraft cabin, magnetometer is set to continuous measurement pattern, machine in cabin
Carry radio station and start transmitting, average magnetic field is calculated at the uniform velocity from head to tail；
6th step, aircraft are powered and tested out of my cabin
It is electric on all electronic equipments in aircraft cabin, magnetometer is set to continuous measurement pattern, machine outside cabin
Carry radio station and start transmitting, at fuselage 0.5M, at the uniform velocity average magnetic field is calculated to tail from head in side；
7th step, aircraft engine are clocked over test
Electric on all electronic equipments in aircraft cabin, airborne station starts transmitting, while engine is clocked over,
After after engine peed stable, magnetometer is set to continuous measurement pattern outside cabin, from tail pars intermedia
Respectively average magnetic field is measured along empennage width；
The eastern tail west of 8th step, head is to by static test in the 4th step；
9th step, measure by the one step process of the 5th step~the 7th, obtain the static magnetic field of North and South direction aircraft
The average value of measured value is F and the static magnetic field measured value average value of east-west direction aircraft is G.
Beneficial effect：The present invention proposes a kind of aircraft magnetic field environmental grounds testing experiment method, and in certain type machine
On be verified, the data measured for certain type magnetic anomaly detection instrument exploitation used in, achieve novelty
Achievement.
Brief description of the drawings
Fig. 1 is the test zone schematic diagram of north-south static measurement of the present invention.
Embodiment
Detailed retouch is carried out to the aircraft magnetic field ground test method of the present invention below by embodiment
State, its step is as follows：
The first step, test site prepare
Selected about 45 meters of square of airfield runway region area are tested, with earth magnetism of the magnetometer to this region
Make assessment test in field.The maximum difference 6nT in earth's magnetic field north and south in region, thing maximum difference 10nT；Runway edge
Street lamp can produce 10nT or so influence when apart from 2~3 meters of magnetometer, should be kept away when measurement
Open lamp, remaining place field homogeneity is without local magnetic anomaly；
Second step, erection geomagnetic diurnal change station
It is outer in 100 meters of the tested aircraft measured zone of distance, select the tranquil environment without outer interference in magnetic field at one to set up
Geomagnetic diurnal change station.In test process, geomagnetic diurnal change is observed, if any exception, this test stops, data
It is invalid；
3rd step, the measurement of earth's magnetic field background
North and South direction and east-west direction distinguish uniform 3 fixing points in runway tested region, in aircraft admission
Preceding use magnetometer geodetic magnetic field, record data is as follows：
North and South direction measurement point 1, recording magnetic field intensity a1；Point 2：a2；Point 3：A3,
East-west direction measurement point 1, recording magnetic field intensity b1；Point 2：b2；Point 3：B3,
Calculated by data, the earth's magnetic field in whole measurement process can average C；
4th step, (head) southern (tail) are northern to static test
After aircraft admission, aircraft remains static, by aircraft be adjusted to (head) southern (tail) north to,
All electronic equipment power sources, particularly high-power electrical power supply are closed in error ± 2 °.With survey magnetic machine magnetometer
Test position and test point as shown in Figure 1 is measured respectively, often point sampling more than 3 times, is taken every time steady
Definite value is recorded.
1) magnetic field in 1st area shown in measurement Fig. 1, two line space 2m totally 33 points, each point measurement 3 times.
Magnetometer probe is positioned on ground during measurement.Draw average field strength D1.
2) magnetic field in 2nd area shown in measurement Fig. 1, two rows totally 37 points, each point measurement 3 times.Wherein
Probe is put on the ground during measurement the first row 1~19, and the second row probe is liftoff 1 meter high.
Go out average field strength D2.
3) magnetic field in 3rd area shown in measurement Fig. 1,0 meter, 4 meter two of survey aircraft afterbody underface line is total to
20 test points.Each point is measured 3 times.Magnetometer probe is positioned on ground during measurement.
Go out average field strength D3.
4) 8 meters of distance, 10 meters, two rows immediately below the magnetic field in 3rd area shown in measurement Fig. 1, measurement drive end unit
Line totally 14 test points.Each point is measured 1 time.Magnetometer probe is positioned over ground during measurement
On.Draw average field strength D4；
Tested in 5th step, aircraft energization cabin
In cabin, magnetometer is set to all electronics in continuous measurement pattern, sample rate 2Hz, aircraft cabin
Device power, radio station transmitting, tester is at the uniform velocity walked to tail from head driving cabin, and measurement process continues 292
Second, draw average field strength E1；
6th step：Aircraft is powered and tested out of my cabin
Outside cabin, magnetometer is set to all electronics in continuous measurement pattern, sample rate 2Hz, aircraft cabin
Device power, radio station transmitting, tester, according to side at airframe 0.5M, measured at the uniform velocity from aircraft
Cheng Chixu 305 seconds, draws average field strength E2；
7th step：Aircraft engine is clocked over test
Electricity is finished on all electronic equipments in aircraft cabin, and 4 engines of aircraft are clocked over, in startup procedure
Continuously measure and record, magnetometer is set to continuous measurement pattern, sample rate 2Hz.From tail center section
Average magnetic field is not measured along empennage width, average field strength E3-1 is drawn.After engine peed stable,
Observe stable magnetic field, no alternating signal.Draw average field strength E3-2；
8th step, (head) eastern (tail) west are to repeating static test in the 4th step；
9th step, repeat the one step process of the 5th step~the 7th and measure
Drawn by the above method to obtaining date comprision to draw a conclusion：
Static magnetic field measured value (North and South direction) average value of aircraft is F.
Static magnetic field measured value (east-west direction) average value of aircraft is G.
A kind of aircraft magnetic field environmental grounds testing experiment method of the present invention, in certain model aircraft magnet ring first
Border ground experiment is verified, as a result shows the test method reasonable, and test data is authentic and valid, no
But can as certain type equipment development input condition, refer to while being provided for the relevant magnetic background data of subsequent product
Lead.
Claims (1)
1. a kind of aircraft magnetic field ground test method, it is characterised in that comprise the following steps：
The first step, select at one that magnetic field is tranquil and the environmental area without outer interference is as aircraft magnetic field measured zone；
Second step, erection geomagnetic diurnal change station
It is outer in 100 meters of the tested aircraft measured zone of distance, geomagnetic diurnal change station is set up, in test process, is seen
Geomagnetic diurnal change is examined, if any exception, this test stops, data invalid；
3rd step, the measurement of earth's magnetic field background
3 fixing points are no less than along the region North and South direction and east-west direction are uniform respectively in measured zone,
And made a mark with marker pen on ground, the earth's magnetic field for completing Chosen Point with magnetometer before airfield approach, which is worth, to be surveyed
Amount；
4th step, static test
Aircraft is dragged into field, aircraft is remained static, aircraft is adjusted to the southern tail north of head to starting
Machine is not driven, and closes all electronic equipment power sources, with magnetometer respectively along fuselage length direction every 0.3m~
0.5m test point is measured, and often point sampling 3 times, takes stationary value to record every time；
Tested in 5th step, aircraft energization cabin
It is electric on all electronic equipments in aircraft cabin, magnetometer is set to continuous measurement pattern, machine in cabin
Carry radio station and start transmitting, average magnetic field is calculated at the uniform velocity from head to tail；
6th step, aircraft are powered and tested out of my cabin
It is electric on all electronic equipments in aircraft cabin, magnetometer is set to continuous measurement pattern, machine outside cabin
Carry radio station and start transmitting, at fuselage 0.5M, at the uniform velocity average magnetic field is calculated to tail from head in side；
7th step, aircraft engine are clocked over test
Electric on all electronic equipments in aircraft cabin, airborne station starts transmitting, while engine is clocked over,
After after engine peed stable, magnetometer is set to continuous measurement pattern outside cabin, from aircraft tail end
Respectively average magnetic field is measured along empennage width；
The eastern tail west of 8th step, head is to by static test in the 4th step；
9th step, measure by the one step process of the 5th step~the 7th, obtain the static magnetic field of North and South direction aircraft
The average value of measured value is F and the static magnetic field measured value average value of east-west direction aircraft is G.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610118336.7A CN107153167B (en) | 2016-03-02 | 2016-03-02 | Aircraft magnetic field ground test method |
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| CN201610118336.7A CN107153167B (en) | 2016-03-02 | 2016-03-02 | Aircraft magnetic field ground test method |
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| CN107153167A true CN107153167A (en) | 2017-09-12 |
| CN107153167B CN107153167B (en) | 2019-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858961A (en) * | 2021-03-01 | 2021-05-28 | 哈尔滨工业大学 | Compensation method for multisource magnetic interference of aviation platform |
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| DE3841261A1 (en) * | 1987-12-08 | 2000-12-28 | Crouzet Automatismes Valence | Method and device for compensating for the effects of magnetic disturbances which originate from a carrier of a magnetometer with total field detection |
| CN102426310A (en) * | 2011-10-09 | 2012-04-25 | 中国航空无线电电子研究所 | Novel full aircraft high-strength irradiation test method |
| CN103267980A (en) * | 2013-05-29 | 2013-08-28 | 上海艾都能源科技有限公司 | Geophysical prospecting method and measuring device for earth electromagnetic field source correction |
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2016
- 2016-03-02 CN CN201610118336.7A patent/CN107153167B/en active Active
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| DE3841261A1 (en) * | 1987-12-08 | 2000-12-28 | Crouzet Automatismes Valence | Method and device for compensating for the effects of magnetic disturbances which originate from a carrier of a magnetometer with total field detection |
| CN102426310A (en) * | 2011-10-09 | 2012-04-25 | 中国航空无线电电子研究所 | Novel full aircraft high-strength irradiation test method |
| CN103267980A (en) * | 2013-05-29 | 2013-08-28 | 上海艾都能源科技有限公司 | Geophysical prospecting method and measuring device for earth electromagnetic field source correction |
| CN104122597A (en) * | 2013-08-22 | 2014-10-29 | 中国科学院遥感与数字地球研究所 | Unmanned aerial vehicle aeromagnetic detecting system and method |
| CN104535941A (en) * | 2014-12-04 | 2015-04-22 | 上海卫星装备研究所 | Satellite magnetic test external interference magnetic field closed-loop control method under geomagnetic environment |
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| 李季: ""地磁测量中载体干扰磁场特性及补偿方法研究"", 《中国博士学位论文全文数据库 工程科技II辑》 * |
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| CN112858961A (en) * | 2021-03-01 | 2021-05-28 | 哈尔滨工业大学 | Compensation method for multisource magnetic interference of aviation platform |
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| CN107153167B (en) | 2019-12-24 |
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Address after: 723213 Liulin Town, Chenggu County, Hanzhong City, Shaanxi Province Patentee after: Shaanxi Aircraft Industry Co.,Ltd. Address before: Box 34, Hanzhong City, Shaanxi Province, 723213 Patentee before: Shaanxi Aircraft INDUSTRY(GROUP) Co.,Ltd. |
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