CN109649684A - High-frequency communication Flight Test Method under a kind of deposition static conditions - Google Patents
High-frequency communication Flight Test Method under a kind of deposition static conditions Download PDFInfo
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- CN109649684A CN109649684A CN201811535846.XA CN201811535846A CN109649684A CN 109649684 A CN109649684 A CN 109649684A CN 201811535846 A CN201811535846 A CN 201811535846A CN 109649684 A CN109649684 A CN 109649684A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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Abstract
This technology category civil aircraft and airplane in transportation category avionics system are taken a flight test field.There is provided high-frequency communication Flight Test Method under a kind of deposition static conditions, comprising: the repacking of static discharger and testing current step 1, test repacking: is carried out to aircraft；Step 2, parameter load and ground school wave: test parameters is loaded and carries out ground school wave before flight, it is ensured that parameter load is correct, and communication function is normal；Step 3, deposition electrostatic are taken a flight test the determination of meteorological condition: determined before taking off by method that ground observation and aerial observation combine take a flight test it is meteorological whether meet flying condition, make a flight test if satisfaction；Step 4 is in-flight implemented: flying aircraft cloud flying in high cirrus region wears cloud and carries out high-frequency communication in the process, checks the signal intelligence of high frequency in the case of deposition electrostatic, and comments to signal intelligence.
Description
Technical field
This technology invention is related to a kind of high-frequency communication Flight Test Method deposited under static conditions, and the invention is mainly applied
It takes a flight test in civil aircraft high frequency communication system, belongs to civil aircraft and airplane in transportation category avionics system and take a flight test field.
Background technique
Deposition electrostatic be in cloud layer various charged particles aircraft surface deposition, collision and a kind of electrostatic formed.
Deposition electrostatic is inevitably generated in aircraft flight, deposition electrostatic is accumulated in aircraft surface to certain degree, Jiu Huifa
Raw precipitation static discharge, the electromagnetic pulse for generation of discharging can cause electromagnetic interference to high-frequency communication.This electromagnetic interference, less serious case,
Can occur noise in the working frequency range of communication system, when serious, the system of will lead to be can not work normally.
The accumulation of deposition electrostatic can achieve hundreds of thousands volt, and deposition electrostatic can sharp increase the noise etc. of high-frequency communication
Grade, can lead to the sharply decline of signal-to-noise ratio.In order to effectively guarantee the normal work of communication system, need to deposition electrostatic item
High-frequency communication ability under part makes a flight test.
Flight test is for showing when aircraft flight is in harsh deposition electrostatic environment pilot scale, the function of communication and navigation system
It can be still in the range of its permission.In addition, the test can be used for verifying the non-conducting surfaces of aircraft processing method or full machine
The accordance of overlap joint and grounding design.
It also takes a flight test in the world to the high-frequency communication under deposition static conditions, wherein being exactly using most methods
Suggest the inspection that high frequency deposition electrostatic is carried out under high cirrus, the snow of drying, sandstorm meteorological condition in AC25-7, but in text only
Advise to the meteorological condition of flight test, does not refer to specific Flight Test Method.
Lack corresponding in China since the high-frequency communication under current less development civil aircraft deposition static conditions is taken a flight test
Appraisal procedure of taking a flight test, be not easy to deposition electrostatic influences to study caused by high-frequency communication, therefore carry out deposit electrostatic
Under the conditions of high-frequency communication Flight Test Method research be very necessary.
Summary of the invention
The purpose of the present invention is:
The object of the present invention is to provide high-frequency communication Flight Test Methods under a kind of deposition static conditions, to deposition electrostatic to high frequency
The influence of communication makes a flight test assessment, authorizes Flight for high frequency communication system seaworthiness and provides data supporting and technology branch
It holds.
The technical scheme is that
High-frequency communication Flight Test Method under a kind of deposition static conditions, comprising:
Step 1, test repacking: the repacking of static discharger and testing current is carried out to aircraft；
Step 2, parameter load and ground school wave: test parameters is loaded and carries out ground school wave before flight, it is ensured that
Parameter load is correct, and communication function is normal；
Step 3, deposition electrostatic are taken a flight test the determination of meteorological condition: being combined before taking off by ground observation and aerial observation
Method come determine take a flight test it is meteorological whether meet flying condition, make a flight test if satisfaction；
Step 4 is in-flight implemented: flying aircraft cloud flying in high cirrus region wears cloud and carries out high frequency in the process
Communication, checks the signal intelligence of high frequency in the case of deposition electrostatic, and comments to signal intelligence.
Step 1 includes: to reequip to the discharger on aircraft, installs test cable and current detecting system additional.
Step 2 includes:
Step 21, parameter load
Loading parameter should include high, medium and low frequency point, while cover the several ways of high-frequency work: LSB, USB, AME；
Wherein, low frequency point value range is more than or equal to 2MHz and is less than 10MHz；Intermediate-frequeney point value range is more than or equal to 10MHz
Less than 20MHz；High frequency points value range is more than or equal to 20MHz and is less than 30MHz；
Step 22, ground school wave
Using high frequency radio set, channel and ground is selected to carry out school wave with examination radio station respectively.
Step 3 includes:
It takes a flight test in deposition electrostatic, the judgement for meteorological condition, the side that is combined using ground observation and aerial observation
Method determines meteorological condition of taking a flight test；
Ground observation: this meteorological station determines whether according to bright, the color of the macroscopic features of cloud, appearance height, cloud
High cirrus, if meet the condition of taking a flight test；
Aerial observation: aerial observation is carried out in winged aircraft using other, according to visibility, air craft battery, aircraft icing feelings
Condition judged, notifies control tower at once after determining the type of cloud, region；
All it is determined as high cirrus meteorology by above two observation, deposition electrostatic examination can be carried out after meeting experimental condition
Fly.
Step 4 includes:
High-frequency communication situation before wearing cloud: before wearing cloud, deposition electrostatic is relatively fewer, carries out high-frequency communication inspection and communicates feelings
Condition.
Slight deposition electrostatic situation: initially wearing cloud, carries out high-frequency communication and checks signal intelligence.
Heavy deposition electrostatic situation: with the growth for wearing the cloud time, the quantity of electric charge tends towards stability, and when test, constantly carries out high
Frequency communicates, and checks signal intelligence.
Aircraft wears cloud repeatedly, repeats above-mentioned test, and comment to test result.
The invention has the advantages that
The materialization of the high-frequency communication Flight Test Method under static conditions, detailedization will be deposited for the first time at home, substantially increased
It takes a flight test efficiency, this method may be used on radio communication and navigate in relevant flight test subject, the promotion of suitable program work of taking a flight test
The progress of work.
Detailed description of the invention
Fig. 1 is static discharger and current test method and test line graph.
Specific embodiment
The present invention is selected high cirrus meteorology and is taken a flight test environment for deposition electrostatic by the analysis to deposition electrostatic meteorological condition,
Determine that test is meteorological using the method that ground observation is combined with aerial observation, by without deposition, slight deposition, serious heavy
High-frequency communication test situation carries out inspection of taking a flight test under 3 kinds of deposition static conditions of product, has well solved the examination of high frequency deposition electrostatic
Fly evaluation problem.
Technical solution of the present invention is divided into the following steps:
Step 1: aircraft test repacking
In view of aircraft integrally be in itself high frequency antenna a part, no matter therefore precipitation static discharge source aircraft that
A part can all interfere high frequency communication system.If HF receiver has corresponding noise control function, it will be made
It is difficult to detect deposition static noise.
For the real-time detection static discharger electric current in flight test, the discharger on aircraft is reequiped, and is added
Fill test cable and current detecting system.Design conductive seat 3 and electrostatic that a shunt resistance 1 is connected on wing tip position
Between discharger impedance part 2, and the voltage for controlling shunt resistance is 0-5V.Data acquisition and monitor 4 are located in body, connect
Enter 1 circuit of shunt resistance.
Static discharger and current test method and test line are shown in attached drawing 1.
Step 2: parameter load and ground school wave
A) parameter loads
Test must be carried out before taking a flight test and participates in load, and load parameter should include high, medium and low frequency point, while should cover high frequency work
The several ways of work: LSB, USB, AME.Wherein, low frequency point value range is more than or equal to 2MHz and is less than 10MHz；Intermediate-frequeney point value
Range is more than or equal to 10MHz and is less than 20MHz；High frequency points value range is more than or equal to 20MHz and is less than 30MHz.
High-frequency communication takes a flight test loading frequency and mode situation can be found in shown in table 1.It is adjusted with specific reference to actual conditions.
1 high-frequency communication of table is taken a flight test loading frequency
B) ground school wave
In order to guarantee the smooth implementation taken a flight test, school wave should be carried out before taking off.
Using high frequency radio set, channel and ground is selected to carry out school wave with examination radio station respectively.
The determination of meteorological condition step 3: deposition electrostatic is taken a flight test
In airplane in transportation category certification flight test, high-frequency communication, which is taken a flight test, requires to check that deposition electrostatic bring influences, and
Such electrostatic is usually to occur in weather region in high cirrus, the snow of drying, sandstorm.Suggest rolling up in height in AC25-7
Cloud, the snow of drying, sandstorm meteorological condition descend to carry out the inspection of high frequency deposition electrostatic, and aircraft rubs in these types of region flight
Generate deposition electrostatic.
For carrying out the aircraft of certification flight test, flight examination is carried out under dry snow and sandstorm meteorological condition
On the one hand testing has biggish risk, on the other hand, both meteorological conditions only just have in specific time and region, right
It is many unfavorable to cause in implementation of taking a flight test.In comparison with two kinds of dry snow, sandstorm meteorological conditions, in high cirrus meteorological condition
It is lower implementation take a flight test it is more feasible, therefore, we select under high cirrus meteorological condition carry out high frequency deposition electrostatic take a flight test.
High cirrus belongs to high family of cloud, and the cloud level is 7000m~10000m, and cloud thickness 500m~2500m, water dust states of matter is ice crystal.
Cirrus is the cloud with fibrous structure, often in Filamentous or sheet, is dispersedly floated in the sky.
It must determine high cirrus meteorological condition first for flight test.The aggregation of cloud has time variability, on
As soon as the time has, future time may be without.Middle floating, position can change cloud on high, it is necessary to catch existing for cloud
Opportunity determines the position of cloud, just can be carried out and take a flight test.Empirical discovery, cirrus is thicker, and windward side accumulated snow is thicker, flies processed
Machine aerofoil surface will generate a large amount of triboelectric charge accumulation.
It takes a flight test in deposition electrostatic, the judgement for meteorological condition, the side that is combined using ground observation and aerial observation
Method determines meteorological condition of taking a flight test.
Ground observation: this meteorological station according to the macroscopic features of cloud, there are the determinations such as height, the bright of cloud, color and be
No high cirrus, if meet the condition of taking a flight test.
Aerial observation: aerial observation is carried out in winged aircraft using other, according to visibility, air craft battery, aircraft icing etc.
Situation judged, notifies control tower at once after determining the type of cloud, region.
It is meteorological to be determined as high cirrus by above two observation, deposition electrostatic can be carried out after experimental condition by, which meeting, takes a flight test.
Step 4: implementation method of taking a flight test
Flying height selection, determines flying height according to the cloud level, generally in 7000m or more.
Flying speed selects higher flying speed in flight envelope, to generate height with surrounding flow
Relative motion, reference velocity Vc=215kn~250kn.
Take a flight test the main accumulation for considering deposition electrostatic, by before wearing cloud, 3 kinds of slight deposition, heavy deposition electrostatic
Under the conditions of high-frequency communication the case where testing, check influence of the deposition electrostatic to high frequency communication system.
When test, aircraft cloud flying in high cirrus region wears cloud and carries out high-frequency communication in the process, checks deposition electrostatic
In the case of high frequency signal intelligence.Specific implementation method is as follows:
High-frequency communication situation before wearing cloud: before wearing cloud, deposition electrostatic is relatively fewer, carries out high-frequency communication inspection and communicates feelings
Condition.
Slight deposition electrostatic situation: initially wearing cloud, carries out high-frequency communication and checks signal intelligence.
Heavy deposition electrostatic situation: with the growth for wearing the cloud time, aircraft is continuously increased charge with windage,
It wears the cloud initial stage, quantity of electric charge increase ratio is very fast, and after the short period, the quantity of electric charge tends towards stability, and when test, constantly carries out high
Frequency communicates, and checks signal intelligence.
Aircraft wears cloud repeatedly, repeats above-mentioned test, and comment to test result.
Step 5: signal intelligence appraisal procedure
Sample situation is commented by table 2, acceptable communication efficiency is to meet more than more visible.
2 pilot of table comments table
It is taken a flight test below with high-frequency communication of certain civil aircraft in the case where depositing static conditions as example to embodiment party of the invention
Formula is described further:
A) test repacking: by the repacking of progress static discharger and testing current shown in attached drawing 1；
B) parameter load and ground school wave: test parameters is loaded and carries out ground school wave before flight, it is ensured that parameter
Load is correct, and communication function is normal；
C) deposition electrostatic is taken a flight test the determination of meteorological condition: the method combined before taking off by ground observation and aerial observation
Come determine take a flight test it is meteorological whether meet flying condition, make a flight test if satisfaction；
D) in-flight implement: flying aircraft cloud flying in high cirrus region wears cloud and carries out high-frequency communication in the process,
It checks the signal intelligence of high frequency in the case of depositing electrostatic, and signal intelligence is commented by requirement is commented.
Claims (5)
1. high-frequency communication Flight Test Method under a kind of deposition static conditions characterized by comprising
Step 1, test repacking: the repacking of static discharger and testing current is carried out to aircraft；
Step 2, parameter load and ground school wave: test parameters is loaded and carries out ground school wave before flight, it is ensured that parameter
Load is correct, and communication function is normal；
Step 3, deposition electrostatic are taken a flight test the determination of meteorological condition: the method combined before taking off by ground observation and aerial observation
Come determine take a flight test it is meteorological whether meet flying condition, make a flight test if satisfaction；
Step 4 is in-flight implemented: flying aircraft cloud flying in high cirrus region wears cloud and carries out high-frequency communication in the process,
It checks the signal intelligence of high frequency in the case of depositing electrostatic, and signal intelligence is commented.
2. high-frequency communication Flight Test Method under a kind of deposition static conditions as described in claim 1, which is characterized in that step 1 packet
It includes: the discharger on aircraft is reequiped, install test cable and current detecting system additional.
3. high-frequency communication Flight Test Method under a kind of deposition static conditions as described in claim 1, which is characterized in that step 2 packet
It includes:
Step 21, parameter load
Loading parameter should include high, medium and low frequency point, while cover the several ways of high-frequency work: LSB, USB, AME；
Wherein, low frequency point value range is more than or equal to 2MHz and is less than 10MHz；Intermediate-frequeney point value range is less than more than or equal to 10MHz
20MHz；High frequency points value range is more than or equal to 20MHz and is less than 30MHz；
Step 22, ground school wave
Using high frequency radio set, channel and ground is selected to carry out school wave with examination radio station respectively.
4. high-frequency communication Flight Test Method under a kind of deposition static conditions as described in claim 1, which is characterized in that step 3 packet
It includes:
It takes a flight test in deposition electrostatic, the judgement for meteorological condition is come using the method that ground observation and aerial observation combine
Determine meteorological condition of taking a flight test；
Ground observation: this meteorological station determines whether high volume according to bright, the color of the macroscopic features of cloud, appearance height, cloud
Cloud, if meet the condition of taking a flight test；
Aerial observation: using other winged aircraft carry out aerial observation, according to visibility, air craft battery, aircraft icing situation into
Row judgement, notifies control tower at once after determining the type of cloud, region；
It is meteorological to be all determined as high cirrus by above two observation, deposition electrostatic can be carried out after experimental condition by, which meeting, takes a flight test.
5. high-frequency communication Flight Test Method under a kind of deposition static conditions as described in claim 1, which is characterized in that step 4 packet
It includes:
High-frequency communication situation before wearing cloud: before wearing cloud, deposition electrostatic is relatively fewer, carries out high-frequency communication and checks signal intelligence.
Slight deposition electrostatic situation: initially wearing cloud, carries out high-frequency communication and checks signal intelligence.
Heavy deposition electrostatic situation: with the growth for wearing the cloud time, the quantity of electric charge tends towards stability, and when test, it is logical constantly to carry out high frequency
Letter checks signal intelligence.
Aircraft wears cloud repeatedly, repeats above-mentioned test, and comment to test result.
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| CN201811535846.XA CN109649684A (en) | 2018-12-14 | 2018-12-14 | High-frequency communication Flight Test Method under a kind of deposition static conditions |
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| CN201811535846.XA CN109649684A (en) | 2018-12-14 | 2018-12-14 | High-frequency communication Flight Test Method under a kind of deposition static conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112904159A (en) * | 2021-01-20 | 2021-06-04 | 中国商用飞机有限责任公司 | Deposition static ground test method and system |
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2018
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|---|---|---|---|---|
| CN102263317A (en) * | 2010-05-25 | 2011-11-30 | 中国商用飞机有限责任公司 | Airplane vertical tail front edge parallel feed slot antenna |
| US20140022281A1 (en) * | 2012-07-18 | 2014-01-23 | The Boeing Company | Projecting airplane location specific maintenance history using optical reference points |
| US20160041050A1 (en) * | 2014-08-11 | 2016-02-11 | Embraer S.A. | Testing apparatus, systems and methods for statically determining free play of aircraft control surfaces |
| CN107799196A (en) * | 2016-08-30 | 2018-03-13 | 波音公司 | For the conductive material to aerofoil profile heating and deicing |
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| CN112904159A (en) * | 2021-01-20 | 2021-06-04 | 中国商用飞机有限责任公司 | Deposition static ground test method and system |
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Application publication date: 20190419 |
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