CN109141891A - A kind of sighting device damaging light-gas gun for simulating hard object - Google Patents
A kind of sighting device damaging light-gas gun for simulating hard object Download PDFInfo
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- CN109141891A CN109141891A CN201811049660.3A CN201811049660A CN109141891A CN 109141891 A CN109141891 A CN 109141891A CN 201811049660 A CN201811049660 A CN 201811049660A CN 109141891 A CN109141891 A CN 109141891A
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- light
- gas gun
- gun
- optical filtering
- sighting device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a kind of for simulating the sighting device of hard object damage light-gas gun, characterized in that including optical filtering head, light-gas gun gun tube and diode laser；In the only support mouth of the optical filtering head insertion light-gas gun gun tube, diode laser is inserted into the port of light-gas gun gun tube, and the light beam of diode laser emission generates the light beam being overlapped with light-gas gun barrel axis after optical filtering head.It is unlikely to spot intensity again advantageous effects of the invention: the technical program using diode laser emission laser beam and using the principle that filters of optical filter with micropore, can generate small spot and not enough causes observation difficulty.Diode laser, light-gas gun gun tube not only can guarantee that outgoing beam is consistent with outgoing body ballistic trajectory using the lesser fit system of gap value between optical filter and be also able to achieve dismounting easily requirement.The sighting device not only has component few, assembles convenient but also has the advantages that using simple and reliable.
Description
Technical field
The present invention relates to a kind of for simulating the sighting device of hard object damage light-gas gun, belongs to aero-engine structural strength
Technical field.
Background technique
During the work time, high-speed rotating fan, compressor and turbo blade are subjected to huge aero-engine
Centrifugal force load, while also subject to high-frequency vibration load caused by air-flow forced vibration so that high cycles fatigue failure at
For the critical issue that must be taken into consideration in design.Since high circulation failure is very sensitive to body structure surface state, and aero-engine
Taking off, land or during low-latitude flying, usually can suck some hard object (such as sands, cement because of powerful stream pressure
Block, screw etc.), subsequently enter collided after engine air circulation road with high-speed rotating blade to form hard object impact injury and
Easily become tired source, causes blade that high cycles fatigue failure occurs to early and jeopardize flight safety.
One of the effective way for preventing the high cycles fatigue Problem of Failure of blade is to ensure that design vibration stress is less than component
Vibration stress allowable (i.e. fatigue limit intensity).Accurately estimating with the fatigue limit intensity of evaluation component is to solve the problems, such as this
The most important condition.After the components such as blade of aviation engine are damaged by hard object, fatigue limit intensity will appear different degrees of
Decline, so the fatigue limit intensity decline degree of the hard object damage rear part of accurate evaluation is to judge damage to guarantee flight safety
Premise.
Light-gas gun high velocity ballistic impact test apparatus is generallyd use in engineering emits hard object impact blade or sample to simulate
The hard object damage that practical outfield occurs since the randomness of hard object damage to simulate in impact test needs that ballistic trajectory is allowed to take aim at
Different location on quasi- blade or sample is to obtain the impact injury of different shape and size, and naked eye aiming often will lead to
Biggish test dispersibility even results in test failure, therefore the light-gas gun pilot system for simulating hard object damage needs one kind quickly
And accurate sighting device.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of the present invention is to provide a kind of for simulating hard object damage light-gas gun
Sighting device solves the problems, such as that naked eye aiming causes biggish test dispersibility to even result in test failure.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of sighting device damaging light-gas gun for simulating hard object, characterized in that including optical filtering head (1), light-gas gun big gun
Manage (2) and diode laser (3)；In only support mouth (h) of optical filtering head (1) insertion light-gas gun gun tube (2), diode laser
Device (3) be inserted into light-gas gun gun tube (2) port (i) in, the light beam of diode laser emission is generated after optical filtering head and
The light beam that light-gas gun gun tube (2) axis is overlapped.
It is above-mentioned a kind of for simulating the sighting device of hard object damage light-gas gun, characterized in that the optical filtering head includes fixed
Position end face, installation cylindrical surface, first-level filtering unthreaded hole and second level optical filtering hole；The first-level filtering unthreaded hole and second level optical filtering hole are sequentially located at peace
It fills in cylindrical surface, and first-level filtering unthreaded hole, second level optical filtering hole and installation cylindrical surface concentricity with higher, coaxiality error are less than
0.02mm；The other end of the first-level filtering unthreaded hole is through positioning end face；Installation cylindrical surface (b) and hydrogen gas gun gun tube (2)
It only holds in the palm and lesser gap value is gap-matched and had between mouth (i), fit clearance is less than 0.02mm, and it is same to be not only convenient for dismounting
When guarantee that second level optical filtering hole (d) and outgoing projectile flight track have compared with high-axiality, realize fine sight；The diode swashs
The light beam of light device transmitting successively generates and light-gas gun gun tube after the first-level filtering unthreaded hole (c) of optical filtering head and second level optical filtering hole (d)
(2) light beam that axis is overlapped and hot spot is minimum is to achieve the purpose that slewing.
It is above-mentioned a kind of for simulating the sighting device of hard object damage light-gas gun, characterized in that the diode laser
It (3) include sequentially connected removable camera lens (e), laser generator (f) and electric lead (g)；The outside cylinder of the removable camera lens (e)
Diameter is less than with the interior of the port of light-gas gun gun tube (2) through identical and the use lesser clearance fit of gap value, fit clearance
0.02mm guarantees that laser beam and light-gas gun gun tube (2) have preferable concentricity while having realized easy to disassemble.
It is above-mentioned a kind of for simulating the sighting device of hard object damage light-gas gun, characterized in that the two of the optical filtering head (1)
Grade optical filtering hole (d) has very low pore size, and aperture should be not more than 0.5mm, to guarantee that the light beam through second level optical filtering hole (d) forms pole
Small hot spot.
Advantageous effects of the invention: the technical program efficiently solves in the hard object damage test of laboratory simulation gently
The quick and accurate pointing problem of gas big gun.Using diode laser emission laser beam and using have micropore optical filter into
Row filter principle, can generate small spot be unlikely to again spot intensity not enough and cause observation difficulty.Diode laser,
Outgoing beam and outgoing body trajectory not only can guarantee using the lesser fit system of gap value between light-gas gun gun tube, optical filter
Track is unanimously also able to achieve dismounting and easily requires.The sighting device not only has component few, assemble it is convenient but also have make
With simple and reliable advantage.
Detailed description of the invention
Fig. 1 is that the present invention is a kind of for simulating the sighting device and fort structure total figure of hard object damage light-gas gun；
Fig. 2 is a kind of sighting device and installation diagram for simulating hard object damage light-gas gun of the present invention；
Fig. 3 is path profile of the laser beam in apparatus of the present invention；
Fig. 4 is the optical filtering head schematic diagram in sighting device；
Fig. 5 is light-gas gun gun tube schematic diagram；
Fig. 6 is the diode laser schematic diagram in sighting device；
Fig. 7 is the size and relative position schematic diagram of impact dent damage with laser beam spot.
The meaning of appended drawing reference in figure:
1- optical filter, 2- gun tube, 21- gun tube beginning, 22- gun tube, 23- gun tube end, 24- original laser beam, 25- pass through
The laser beam in optical filtering hole, 26- hot spot, the damage of 27- impact dent, 3- diode laser,
4- high-pressure air source, 5- valve, 6- pressure sensor, 7- pressure reading, 8- plenum chamber, 9- emission switch, 10- electricity
Magnet valve, 11- bracket, 12- laser sensor, 13- shield, 14- sample, 15- flexible jig, the hard object speed laser measurement of 16-
System, 17- timer,
A- positions end face, and b- installs cylindrical surface, c- first-level filtering unthreaded hole, d- second level optical filtering hole, the removable camera lens of e-, f- laser hair
Raw device, g- electric lead, h- only hold in the palm mouth, i- port, G- partial enlarged view.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
Refering to Fig. 2/4/5/6, this sighting device includes optical filtering head (1) and diode laser (3).
When work, by only support mouth (h) of optical filtering head (1) insertion light-gas gun gun tube (2), diode laser (3) are inserted
In the port (i) for entering light-gas gun gun tube (2), the light beam of diode laser emission passes through the first-level filtering unthreaded hole (c) of optical filtering head
It generates and is overlapped with light-gas gun gun tube (2) axis and light beam that hot spot is minimum afterwards with second level optical filtering hole (d), slewing is reached with this
Purpose, as shown in Figure 1.The sighting device installation diagram is as shown in Fig. 2, wherein laser beam path is as shown in Figure 3.
Optical filtering head in the present embodiment as shown in figure 4, its cooperate cylindrical surface (b) diameter be 12mm, first-level filtering unthreaded hole (c)
Diameter is 4mm, and the diameter in second level optical filtering hole is 0.5mm.First-level filtering unthreaded hole, second level optical filtering hole and installation cylindrical mask are for concentricity
Error is 0.02mm.
Light-gas gun gun tube is as shown in figure 5, gun tube port (i) and the diameter of only support mouth (h) are 12mm.Diode laser
Device is as shown in fig. 6, the external cylindrical surface diameter of its removable camera lens is 12mm.
The fit-up gap of diode laser and gun tube port is 0.02mm in the present embodiment, and optical filtering head and gun tube are only held in the palm
The fit-up gap of mouth is 0.02mm.The spot diameter that laser beam in the present embodiment by optical filter is fallen on specimen surface is less than
1.0mm。
In order to verify the accuracy of the sighting device, such as Fig. 1, shown in 3, experiment porch mounted is first in the present embodiment
Desired position is first directed at using the sighting device, is then formed with 300m/s speed transmitting 3mm steel ball impact specimen surface recessed
Pit type impact injury finally reinstalls sighting device under the premise of keeping sample and constant gun tube state, i.e. diode swashs
Light device and optical filtering head as a result, it has been found that outgoing beam hot spot falls within pit bottom such as Fig. 7 completely, therefore can illustrate that this aiming fills
The accuracy set.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of for simulating the sighting device of hard object damage light-gas gun, characterized in that including optical filtering head, light-gas gun gun tube and two
Pole pipe laser；In the only support mouth of the optical filtering head insertion light-gas gun gun tube, diode laser is inserted into the dress of light-gas gun gun tube
In bullet mouth, the light beam of diode laser emission generates the light beam being overlapped with light-gas gun barrel axis after optical filtering head.
2. according to claim 1 a kind of for simulating the sighting device of hard object damage light-gas gun, characterized in that the filter
Shaven head includes positioning end face, installation cylindrical surface, first-level filtering unthreaded hole and second level optical filtering hole；The first-level filtering unthreaded hole and second level optical filtering hole
It is sequentially located in installation cylindrical surface, and first-level filtering unthreaded hole, second level optical filtering hole are less than with installation cylindrical mask for coaxiality error
0.02mm；The other end of the first-level filtering unthreaded hole is through positioning end face；The only support mouth on the installation cylindrical surface and hydrogen gas gun gun tube
Between be gap-matched, fit clearance be less than 0.02mm.
3. according to claim 1 or 2 a kind of for simulating the sighting device of hard object damage light-gas gun, characterized in that institute
Stating diode laser includes sequentially connected removable camera lens, laser generator and electric lead；The outside cylinder of the removable camera lens
Diameter and the port of light-gas gun gun tube it is interior through identical and be gap-matched, fit clearance is less than 0.02mm.
4. according to claim 2 a kind of for simulating the sighting device of hard object damage light-gas gun, characterized in that the filter
The aperture in the second level optical filtering hole of shaven head is not more than 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811049660.3A CN109141891A (en) | 2018-09-10 | 2018-09-10 | A kind of sighting device damaging light-gas gun for simulating hard object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811049660.3A CN109141891A (en) | 2018-09-10 | 2018-09-10 | A kind of sighting device damaging light-gas gun for simulating hard object |
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| Publication Number | Publication Date |
|---|---|
| CN109141891A true CN109141891A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811049660.3A Pending CN109141891A (en) | 2018-09-10 | 2018-09-10 | A kind of sighting device damaging light-gas gun for simulating hard object |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692917A (en) * | 2020-07-10 | 2020-09-22 | 中国航发沈阳发动机研究所 | Laser sight and have its air bubble |
| CN112986017A (en) * | 2021-03-02 | 2021-06-18 | 南京功上杰网络科技有限公司 | Plastic material toughness detection equipment for aerospace new material manufacturing |
| CN113155395A (en) * | 2021-03-31 | 2021-07-23 | 中国飞机强度研究所 | Aiming and positioning device and method for strong impact test system |
| CN113281197A (en) * | 2021-05-13 | 2021-08-20 | 中物院成都科学技术发展中心 | Vertical light gas gun capable of moving in multiple dimensions |
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| CN113155395A (en) * | 2021-03-31 | 2021-07-23 | 中国飞机强度研究所 | Aiming and positioning device and method for strong impact test system |
| CN113281197A (en) * | 2021-05-13 | 2021-08-20 | 中物院成都科学技术发展中心 | Vertical light gas gun capable of moving in multiple dimensions |
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