CN107745826A - The more fuel tank vent system string oil test measuring methods of aircraft - Google Patents
The more fuel tank vent system string oil test measuring methods of aircraft Download PDFInfo
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- CN107745826A CN107745826A CN201710816853.6A CN201710816853A CN107745826A CN 107745826 A CN107745826 A CN 107745826A CN 201710816853 A CN201710816853 A CN 201710816853A CN 107745826 A CN107745826 A CN 107745826A
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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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- Manufacturing & Machinery (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to aircraft fuel system experimental technique field, is related to a kind of device of aircraft fuel system experiment.Mainly it is made up of flexible pipe, flexible collection pouch.It is proposed a kind of fuel tank vent system string oil test method of aircraft fuel system experiment.Adjust flight simulation posture platform, simulation aircraft flight height system to SBR；Flexible pipe is collected in each exit installation of the aerating system pipeline of test simulation fuel tank, steam hose, the devices such as flexible collection pouch, refueled in the aerating system of test simulation fuel tank with simulation aircraft flight height system interface installation shape of reverse omega device to test simulation fuel tank, by flight envelope simulated flight posture, flying height carries out simulated test, during experiment, certain state aerating system of getting off the plane may enter fuel oil, the fuel oil test that can be collected into aerating system by flexible collection pouch and dress shape of reverse omega device collects fluid in each flexible collection pouch and dress shape of reverse omega device after terminating, weigh to obtain aircraft aerating system string oil quality.
Description
Technical field
The invention belongs to aircraft fuel system experimental technique field, is related to a kind of more fuel tank vent system string oil tests of aircraft
Measuring method.
Background technology
Fuel tank vent system be ensure fuel tank in air pressure and ambient atmosphere pressure it is basically identical.Due to aerating system breather pipe
Road connects with each fuel tank, air, therefore pitching, roll occurs in aircraft flight can cause aerating system oil-feed, simultaneously
It flow to other fuel tanks.The fine or not air pressure on the one hand ensured in each fuel tank of aerating system design and ambient atmosphere pressure are basically identical,
On the other hand it is exactly to suppress the oily phenomenon of string to occur, makes string oil mass in a less acceptable scope.The method is exactly to survey
Amount string oil mass is how many and designs.
Due to aircraft roll to be simulated, pitching, and the factor such as vapour-liquid mixing, this method is used for measurement string oil test and still belonged to
First.
The content of the invention
(1) goal of the invention：A kind of testing ＆ measuring system is provided for aircraft aerating system string oil test.
(2) technical scheme：
1 experimental condition：
1. test simulation fuel tank；
2. simulated flight roll, the flight simulation posture platform of pitching；
3. simulate aircraft flight height system.
2 technological difficulties
1. how to collect vapour-liquid mixture；
2. how to collect the mist of oil in steam flow, oil droplet；
3. due to postures such as aircraft roll pitching to be simulated, therefore work top is in rotation process, how to ensure to receive
The liquid of collection is not flow at it.
3 realize step
The more fuel tank vent system string oil test measuring methods of described aircraft, are realized by following steps：
Step 1：Adjust flight simulation posture platform, simulation aircraft flight height system to SBR；Step 2：Trying
Flexible pipe, steam hose, flexible collection pouch are collected in each exit installation of vent line for testing emulation fuel tank, as shown in Figure 2；
Step 3：In the vent line and simulation aircraft flight height system interface installation shape of reverse omega of test simulation fuel tank
Device, as shown in Figure 3；
Step 4：Add aviation kerosine to test simulation fuel tank, mould is carried out by flight envelope simulated flight posture, flying height
Intend experiment, during experiment, certain state vent line of getting off the plane may enter aviation kerosine, pass through flexible collection pouch and dress
Shape of reverse omega device collects the aviation kerosine into vent line；
Step 5：Fluid in each flexible collection pouch and dress shape of reverse omega device is collected after off-test, weighs to obtain aircraft and leads to
Go here and there oil quality in air pipe.
Due to containing mist of oil, oil droplet in steam flow in vent line, following two kinds of methods are taken to improve measurement accuracy.Its
One, in fuel tank, all the time vertically downward, and gas outlet is vertically upward for collecting, and collection port has certain drop with gas outlet,
Collection port thus can collect oil mass, as shown in Figure 4 under by the direction of steam flow and gravity；Second, outside fuel tank, with
In the imitative flying height pipeline of fuel tank vent system connection, the device of falling Ω is filled, steam flow is moved in a circle, oil is made by centrifugal force
Mist, oil droplet depend on cylindrical inwall, finally flow to bottom collection device, as shown in Figure 3.
4 beneficial effects
Due to not only having kerosene, also air in oil tank breather road, therefore pipeline measuring system measurement oil mass can not be used,
Oil mass can only be used to collect Weighing method measurement.
If aerating system pepeline characteristic can be influenceed using sealing or semitight collection device, therefore use open collection
Device, ensure that collection device air pressure is identical with residing fuel tank air pressure.
Due to postures such as aircraft roll pitching to be simulated, therefore work top is the oil tank breather road in rotation process
Blow vent, if using fixed collection device, can influence aerating system pipeline towards being also different due to collecting level change
Characteristic, acquisition precision is on the other hand influenceed as described above, therefore use flexible collection device.See as shown in Figure 3.
The more fuel tank vent system string oil test measuring methods of aircraft most real simulation fuel tanker aerating system experimental enviroment
And state, evaluated by ministerial level.Experiment smoothly completes, and test data is authentic and valid.Qualified offer is designed for fuel tank vent system
Effective criterion.
Brief description of the drawings
The present invention includes 4 figures, and the brief description of the drawings of these accompanying drawings is as follows：
Fig. 1 is aerating system string oil test measuring method flow chart；
Schematic diagram when Fig. 2 is fuel tank horizontality；
In Fig. 2,1- test simulations fuel tank, 2- aviation kerosines, 3- vent lines, 4- collections flexible pipe, 5- steam hoses, 6- are soft
Property collecting bag
Fig. 3 is the collection device of falling Ω schematic diagram；
In Fig. 3, the 7- devices of falling Ω, 8- collectors, 2- aviation kerosines
Fig. 4 is fuel tank roll view.
Specific embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
In Fig. 2,1- fuel tanks, 2- aviation kerosines, 3- vent lines, 4- collect flexible pipe, 5- steam hoses, 6- flexible collections
Bag.Referring to Fig. 2, this state is aircraft horizontality and experiment SBR.
In Fig. 3, the 7- devices of falling Ω, 8- collectors, 2- aviation kerosines.By can see in figure, when air-flow enters the pipeline
Afterwards, direction vertically downward, further speeds up mist of oil, oil droplet by gravity, then circles it.By centrifugal force, get rid of
To outer inner round side, and then flow into collector.
In Fig. 4,1- fuel tanks, 2- aviation kerosines, 3- vent lines, 4- collect flexible pipe, 5- steam hoses, 6- flexible collections
Bag.Referring to Fig. 4, this state is aircraft roll state.Now, aviation kerosine floods the ventilation mouth of pipe, vent line oil-feed, aviation
Kerosene is along vent line and collects in flexible pipe inflow flexible collection pouch, wherein, unnecessary gas is discharged by steam hose, by
Acted in steam hose, flexible collection pouch, the air pressure in bag is identical with residing fuel tank air pressure all the time, can reflect experiment shape
State.
Comprise the following steps that：1. adjust flight simulation posture platform, simulation aircraft flight height system to SBR；
2. collect flexible pipe, steam hose, flexible collection in each exit installation of the aerating system pipeline of test simulation fuel tank
The devices such as bag, as shown in Figure 2；
3. in the aerating system and simulation aircraft flight height system interface installation shape of reverse omega device of test simulation fuel tank
As shown in Figure 3；
4. being refueled to test simulation fuel tank, simulated test, experiment are carried out by flight envelope simulated flight posture, flying height
During, certain state aerating system of getting off the plane may enter fuel oil, can be received by flexible collection pouch and dress shape of reverse omega device
Fuel oil of the collection into aerating system；
5. collecting fluid in each flexible collection pouch and dress shape of reverse omega device after off-test, weigh to obtain aircraft aerating system
String oil quality.
Due to containing mist of oil, oil droplet in steam flow in vent line, following two kinds of methods are taken to improve measurement accuracy.Its
One, in fuel tank, all the time vertically downward, and gas outlet is vertically upward for collecting, and collection port has certain drop with gas outlet,
Collection port thus can collect oil mass, as shown in Figure 4 under by the direction of steam flow and gravity；Second, outside fuel tank, with
In the imitative flying height pipeline of fuel tank vent system connection, the device of falling Ω is filled, steam flow is moved in a circle, oil is made by centrifugal force
Mist, oil droplet depend on cylindrical inwall, finally flow to bottom collection device, as shown in Figure 3.
Claims (3)
1. the more fuel tank vent system string oil test measuring methods of aircraft, it is characterised in that：The measuring method comprises the following steps；
Step 1：Adjust flight simulation posture platform, simulation aircraft flight height system to SBR；
Step 2：Each exit installation of vent line (3) in test simulation fuel tank (1) collect flexible pipe (4), steam hose (5),
Flexible collection pouch (6)；
Step 3：Vent line (3) in test simulation fuel tank (1) installs Ω with simulation aircraft flight height system interface
Shape dress is put (7)；
Step 4：To test simulation fuel tank (1) plus aviation kerosine (2), carried out by flight envelope simulated flight posture, flying height
Simulated test, during experiment, certain state vent line (3) of getting off the plane may enter aviation kerosine (2), pass through flexible receive
Collect bag (6) and dress shape of reverse omega device (7) collects the aviation kerosine (2) for entering vent line (3)；
Step 5：Fluid in each flexible collection pouch (6) and dress shape of reverse omega device (7) is collected after off-test, weighs to obtain aircraft
String oil quality in vent line (3).
2. the more fuel tank vent system string oil test measuring methods of aircraft according to claim 1, it is characterised in that：Also include
In the test simulation fuel tank (1), all the time vertically downward, and gas outlet is vertically upward for collecting, and collection port has one with gas outlet
Fixed drop, collection port are collected under by the direction of steam flow and gravity.
3. the more fuel tank vent system string oil test measuring methods of aircraft according to claim 1, it is characterised in that：It is described fall
Ω devices (7) outside, imitative flying height pipeline are connected with the vent line (3) of test simulation fuel tank (1) in test simulation fuel tank (1)
In, steam flow is moved in a circle, mist of oil, oil droplet is depended on cylindrical inwall by centrifugal force, finally flow to bottom collector
(8)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710816853.6A CN107745826B (en) | 2017-09-12 | 2017-09-12 | Oil-mixing test measurement method for multi-oil-tank ventilation system of airplane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710816853.6A CN107745826B (en) | 2017-09-12 | 2017-09-12 | Oil-mixing test measurement method for multi-oil-tank ventilation system of airplane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107745826A true CN107745826A (en) | 2018-03-02 |
| CN107745826B CN107745826B (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710816853.6A Active CN107745826B (en) | 2017-09-12 | 2017-09-12 | Oil-mixing test measurement method for multi-oil-tank ventilation system of airplane |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102700725A (en) * | 2012-06-08 | 2012-10-03 | 中国航空工业集团公司西安飞机设计研究所 | Method for installing fuel tank of large aircraft on test bench |
| CN103991557A (en) * | 2014-04-17 | 2014-08-20 | 中国航空工业集团公司沈阳飞机设计研究所 | Partner oil charging-receiving ground simulation testing system |
| CN104176262A (en) * | 2014-09-15 | 2014-12-03 | 北京航空航天大学 | Pressure-maintaining oil tank of aircraft |
| CN104527987A (en) * | 2015-01-07 | 2015-04-22 | 哈尔滨飞机工业集团有限责任公司 | Airplane main oil tank pressure-maintaining vent system |
| CN105109700A (en) * | 2015-08-12 | 2015-12-02 | 中国航空工业集团公司西安飞机设计研究所 | Residual-oil discharging system and oil discharging method of emergency oil discharging header pipe |
| CN107145693A (en) * | 2017-06-27 | 2017-09-08 | 中国航空工业集团公司沈阳飞机设计研究所 | The dynamic measurement method of the irregular fuel tank fuel quantity of aircraft |
-
2017
- 2017-09-12 CN CN201710816853.6A patent/CN107745826B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102700725A (en) * | 2012-06-08 | 2012-10-03 | 中国航空工业集团公司西安飞机设计研究所 | Method for installing fuel tank of large aircraft on test bench |
| CN103991557A (en) * | 2014-04-17 | 2014-08-20 | 中国航空工业集团公司沈阳飞机设计研究所 | Partner oil charging-receiving ground simulation testing system |
| CN104176262A (en) * | 2014-09-15 | 2014-12-03 | 北京航空航天大学 | Pressure-maintaining oil tank of aircraft |
| CN104527987A (en) * | 2015-01-07 | 2015-04-22 | 哈尔滨飞机工业集团有限责任公司 | Airplane main oil tank pressure-maintaining vent system |
| CN105109700A (en) * | 2015-08-12 | 2015-12-02 | 中国航空工业集团公司西安飞机设计研究所 | Residual-oil discharging system and oil discharging method of emergency oil discharging header pipe |
| CN107145693A (en) * | 2017-06-27 | 2017-09-08 | 中国航空工业集团公司沈阳飞机设计研究所 | The dynamic measurement method of the irregular fuel tank fuel quantity of aircraft |
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| Publication number | Publication date |
|---|---|
| CN107745826B (en) | 2020-02-14 |
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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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