CN1621774A - Water target shooting gun and bullet thereof - Google Patents
Water target shooting gun and bullet thereof Download PDFInfo
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- CN1621774A CN1621774A CN 200410101441 CN200410101441A CN1621774A CN 1621774 A CN1621774 A CN 1621774A CN 200410101441 CN200410101441 CN 200410101441 CN 200410101441 A CN200410101441 A CN 200410101441A CN 1621774 A CN1621774 A CN 1621774A
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- 235000006506 Brasenia schreberi Nutrition 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims description 5
- 239000002352 surface water Substances 0.000 claims 3
- 230000009191 jumping Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 15
- 230000033001 locomotion Effects 0.000 description 14
- 230000000630 rising effect Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 230000037237 body shape Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000002153 concerted effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 241001397306 Proales Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 house woods Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The water target shooting gun has its bullet jumping and flying on water surface and may be item for recreation, body building, exercise, demonstration and sports. It scores based on the jumping number of the bullet on the water surface and the distance the bullet flies. The bullet may be spherical, columnar, flat ball or other shapes, and its lower surface may have notches, holes and lugs. The water target shooting gun has bore with cross section of circle, rectangle, ellipse, etc. for reduced interval between the bullet and the inside wall of the gun.
Description
Technical field
The present invention relates to a kind ofly be used to impact the water surface by the water target shooting gun of bullet jump flight and the bullet of use, the bullet of this water target shooting gun and use is in particular for waiting amusement game, recreation and body-building, exercise performance and the sports tournament of adding up achievement by calculating bullet in the jump number of times or the distance of the touching water surface of the water surface.
Background technology
At application number be 02155313.0 " rifle be used for impacting the purposes of water surface ricochet flight and the bullet of use " in the application patent of invention, propose a kind of novel sports item and " flown the water motion " (also can be called " water target shooting motion "), the target that " flies the water motion " is a water surface of delimiting, bullet is hit can upspring behind the water surface and is done parabolic continuous touching water surface flying, in being parked in water; It is 1 shooting, repeatedly hits the water surface, and decides achievement and victory or defeat according to the laws of the game that the result that this repeatedly hits is aided with regulation.
Also to use following physics knowledge in the present invention.Here object is thrown to the water surface, can be upspring then, can be done explanation by continuous physics principle along parabolic flight.We know, the object of throwing to the water surface is because the effect of inertia and gravity, object can travel forward with parabolic path, up to touching the water surface, in the moment that object contacts with the water surface, because object gravity and the speed that moves downward, water surface can be squeezed and distortion recessed down, because the capillary effect of water, water surface will impose on the power that object makes progress along the direction of recovering original state, according to active force and reaction force, the speed that moves downward is big more, then to impose on the upward force of object also big more for water surface, and respective objects just can be takeoff and to leave the water surface high more, can be visualized as the water surface effect of spring here.In addition according to Archimedes principle, object also has been subjected to the buoyancy that makes progress.In the time of suffered vertically upward the gravity of making a concerted effort to be subjected to greater than object of object, object will play dried up again, continuation travels forward along parabola, fall again then, touch the water surface again, upspring again ... object is just at the continuous touching water surface flying of water surface upper edge parabola like this, up to suffered vertically upward make a concerted effort to be less than or equal to gravity the time and rest in the water, be subjected to the resistance of water at last and stop motion.In general, object depends on 4 factors in the effect of water surface rebounding: angle of shot, and projection velocity, the speed that horizontally rotates of object, object touches the angle between the instant water and the water surface.
In this process, if object is done upwards simultaneously and is horizontally rotated, air-flow will be pounced in face of object with the same big speed with the object flying speed, object surfaces is non-definitely smooth, so have some air just attached to body surface along with object rotates together, the speed of object top air-flow is just big than the below like this, can draw pressure below the object greater than the top according to Bernoulli's theorem, and object just has been subjected to the power of air to its come-up like this; If instead doing to horizontally rotate simultaneously, object will be subjected to the power that air sinks to it downwards.Therefore just can obtain by make indenture, convex epirelief, pothole and projection at body surface that bigger air floats or the power of sinking: do when rotating up when the object rising like this, bigger air makes object rise De Genggao to the power of its come-up; And do when being rotated down when falling, bigger air makes object obtain bigger downward speed to the power of its sinking, thus the downward kinetic energy when colliding with the water surface is bigger, and it is higher just to takeoff.Here it is in water target shooting, need allow the proal while of bullet they self do and horizontally rotate, could jump higher fartherly.
The perpendicular cross-sectional shape of the gun barrel inwall of present various firearms generally is circular, and what have on the bore has a rifling, and what have does not have; Also not having gun barrel cross section of inboard wall shape is rectangle or the transverse axis gun barrel greater than the elliptical shape of the longitudinal axis.And present employed bullet do not have the bullet of oblate cylinder body shape and discoid oblate sphere shape yet, and the bullet surface is general through smooth treatment.And in water target shooting, in order to allow bullet on the water surface, jump higher fartherly, need to use the bullet of oblate cylinder body shape or discoid oblate sphere shape, need to be rectangle or transverse axis with gun barrel inwall perpendicular cross-sectional shape be used greater than the gun barrel of the elliptical shape of the longitudinal axis such bullet.
Horizontally rotate in order to realize that bullet is in-flight, can use here very ripe various bullet is produced horizontally rotate causing of effect revolve construction and device, such as have the coefficient of friction obedient sheet bigger from the not far bore place of muzzle than bore coefficient of friction.
Summary of the invention
The present invention is for a kind of water target shooting gun and employed novel bullet that can impact the water surface by the bullet jump flight is provided.
The technical solution adopted for the present invention to solve the technical problems is:
The bullet surface is through coarse processing, and promptly the bullet surface is coarse non-smooth.
Thereby in order to increase more various movement effects by the shape and structure that changes bullet, bullet inside is hollow, and is full of liquid, and promptly liquid is encased by the bullet shell.
For allow bullet have the state that better horizontally rotates and on the water surface better rebounding effect, bullet is the cylindrical shape of higher primary school in the bottom surface diameter, and the bullet bottom surface is to be in the state that parallels with the level cross-sectionn of bore in gun barrel.
For with the supporting use of the bullet of above-mentioned cylindrical shape, the vertical cross-section of the gun barrel inwall of water target shooting gun is a rectangle, promptly the vertical cross-section of bore is a rectangle, and when shooting the gun barrel state be that this rectangular horizontal sides is grown up in the vertical length of side.
Bullet can be the oblate sphere shape, and promptly its level cross-sectionn is circular, and the vertical cross-section of passing the center is oval.Can also be the shape of top and the bottom after each is clipped a part by level with the center equidistant of oblate sphere, promptly its level cross-sectionn be circular, and the both sides of passing the vertical cross-section at center are two parallel lines, and both sides respectively are one section elliptic curves in addition.
For with the supporting use of the bullet of discoid oblate sphere shape, the vertical cross-section of the gun barrel inwall of water target shooting gun is the elliptical shape of transverse axis greater than the longitudinal axis, the vertical cross-section of bore is the elliptical shape of transverse axis greater than the longitudinal axis when promptly shooting.
The vertical cross-section of the gun barrel inwall of water target shooting gun can also be a closed figures, and its both sides are two parallel lines, and both sides respectively are one section elliptic curves in addition, and these two elliptic curves are towards external symmetry.
Above-mentioned bore generally is linear, and the vertical cross-section of bore refers generally to vertical cross-section arbitrarily.But bore that also can a certain section is a nonlinear type, and its a certain section vertical cross-section also can be inequality with the shape of the vertical cross-section of other parts.
In order to increase the power that the suffered at the volley air of bullet rises and sinks, thereby increase more various movement effects, the bottom surface of bullet has quantity greater than two pothole, and promptly the bottom surface of bullet has greater than two inside recessed curved surfaces.These potholes can be circle, ellipse, triangle, quadrangle, pentagon, hexagon, heptagon, octagon, also can be other various geometric forms.
In order to increase the power that the suffered at the volley air of bullet rises and sinks, thereby increase more various movement effects, the bottom surface of bullet has quantity greater than two indenture.These indentures can be arbitrary shapes.
In order to increase the power that the suffered at the volley air of bullet rises and sinks, thereby increase more various movement effects, the bottom surface of bullet has quantity greater than two convex epirelief.These convex epireliefs can be arbitrary shapes.
In order to increase the power that the suffered at the volley air of bullet rises and sinks, thereby increase more various movement effects, the bottom surface of bullet has quantity greater than two projection, and promptly the bottom surface of bullet has quantity greater than two the curved surface to outer process.These projectioies can spherosome, oval ball, cone, cube, cuboid and their cross section body, can also be the Else Rule solid, can also be irregular different shape.
The bottom surface of above-mentioned bullet can also be to have the combination existence in twos of indenture, pothole, convex epirelief and projection, three or three combination existence and four common situations about existing.
The bottom surface of above-mentioned bullet is meant the bottom surface of bullet and water surface touching at the volley, and then the upper bottom surface of bullet is exactly the another one bottom surface.
The upper bottom surface of above-mentioned bullet can be the plane.
The upper bottom surface of above-mentioned bullet can also be to have and same indenture, pothole, convex epirelief or the projection that distributes of bottom surface.
In order to use the bore vertical cross-section generally used the now gun barrel as circle, bullet also can be the spherosome shape that coarse processing is passed through on the surface, and the bullet surface can also have quantity as mentioned above greater than two indenture, pothole, convex epirelief or projection.
The maximum gauge of above-mentioned bullet can be between 0.4 centimetre to 20 centimetres, highly can be between 0.2 centimetre to 10 centimetres; Better size is that maximum gauge is between 0.5 centimetre to 8 centimetres, highly between 0.2 centimetre to 8 centimetres.The gun barrel of employed water target shooting gun need be supporting with bullet, to reach the as far as possible little purpose of average headway between bullet surface and the bore.Because if columniform bullet uses the gun barrel of bore vertical cross-section as circle, the gas leakage of quickening bullet so is just too serious, and the obtainable energy of bullet is just very little, and just jumping is not soared not far on the water surface.Allow bullet reach desirable motion state in order to reach, average headway is preferably less than 0.1 centimetre less than 0.5 centimetre between bullet surface and the bore.And when bullet was placed horizontally at gun barrel, its vertical edge should be smooth.The machining accuracy of bullet and gun barrel is high more good more.
Above-mentioned bullet can be used the ABS plastic manufacturing, also can make jointly with materials such as house woods, rubber; Bullet also can be to make with pottery; Also can be with other organic or inorganic material manufacturing; Also can be to make with metal material; Also can be with above-mentioned composite material manufacturing; These manufactured materials can play and reduce and the bore friction, and state of flight is more steady, and are better in the water surface flight effect of jumping, and perhaps reduce the effect of manufacturing cost.Above-mentioned bullet generally is to sink to the underwater, reclaims on the open in advance fishing net by falling.Bullet density also can be that they float on the surface and reclaim less than water.
In order to protect environment, above-mentioned bullet should not use the material manufacturing that contains destruction environment such as lead, and is special, can also wait with the fish material and make, and the bullet of ejaculation just becomes the fish material.
Above-mentioned gun barrel does not have to cause the rifling of the vertical rotation of bullet, bullet horizontally rotate be by use very ripe various bullet is produced horizontally rotate causing of effect revolve construction and device, such as have the coefficient of friction obedient sheet bigger than bore coefficient of friction at the bore place from 1 centimetre in muzzle, obedient sheet can also be adjusted the speed that bullet horizontally rotates by the thickness that knob is adjusted in the bore.
The water target shooting gun here can use carbon dioxide, red gas 1600, red gas 2200, valiant general TOPGAS, FLEON134A etc. to mix Compressed Gas, and perhaps their Compressed Gas of mixing again is as power.
The invention has the beneficial effects as follows:
When the bullet that the process rough surface is handled flies in air, can adhere to more gas, suffered air rising and the power of sinking are just bigger, and the bullet that its specific surface is smooth can be jumped higher fartherly on the water surface.
The bullet that inside is full of liquid is more steady when motion flight, easier maintenance motion state and track.
Bottom surface has the bullet of indenture, pothole, convex epirelief or projection after bore is penetrated in rotation, suffered at the volley air rise and the power of sinking bigger, thereby can from the water surface takeoff higher, flight is farther, reaches better movement effects.
The even distribution of indenture, pothole, convex epirelief or projection can allow bullet keep self motion state stably in bore and air.
The bullet of cylindrical shape and oblate sphere cross section shape can have the state of flight of better jumping than existing common cone bullet on the water surface, and the bottom surface of bullet is to be in the level cross-sectionn of bore to parallel in gun barrel, the ejaculation bore that bullet is horizontally rotated, the bottom surface that also just can reach bullet on the water surface keep with the water surface near horizontal state.
The supporting use of difform bullet and difformity gun barrel, can allow the mean gap on bore and bullet surface as far as possible little, like this when bullet quickens in bore, the gas that promotes bullet just reduces outer rushing down, allow bullet obtain bigger energy, the flight path that also can make bullet is as far as possible near on a vertical plane.And when the bullet surface had indenture, pothole, convex epirelief or projection, the as far as possible little mean gap in bore and bullet surface can also alleviate the Bernoulli phenomenon of bullet in bore, reduced the friction of bullet and bore.Water target shooting gun here and bullet are matching used, so need file an application in a file.
The specific embodiment
Embodiment one: employed water target shooting gun is the common air rifle through transforming in the present embodiment, and the vertical cross-section of gun barrel inwall is a rectangle, and the rectangular length of side is 0.4 centimetre of 2 cm x; Employed bullet is a cylindrical shape, and its bottom surface diameter is 1.9 centimetres, and height is 0.3 centimetre; The bottom surface of bullet is to be in the state that parallels with the level cross-sectionn of bore in gun barrel.Bullet is to use the ABS plastic processing and manufacturing, and density is greater than water.Have the coefficient of friction obedient sheet bigger than bore coefficient of friction at the bore place from 1 centimetre in muzzle, obedient sheet can also be adjusted the speed that bullet horizontally rotates by the thickness that knob is adjusted in the bore.Water target shooting gun has the carbon dioxide air bottle.Like this when with suitable angle rifle during towards water surface aimed fire, striker bump valve inside is opened valve, Compressed Gas is released bullet, bullet is just being done horizontally rotating of self and flight forward simultaneously, the flight of jumping that it is will be on the water surface continuous.In " water target shooting " match, competition area are selected in a lakeside, and lakeside has the shooting platform, and platform is a little more than lake surface, have 10 shooting roads, per pass wide 1 meter on the platform---also mark 10 1 meter wide water channels on the corresponding water surface with buoy.Shooting has the shooting datum line on the road---and shooter will stand in datum line with interior shooting, from from 20 meters waters surface far away of datum line, be provided with all on every water channel that the plastic circle ring that differs in size---annulus is close to the water surface, exceed 1 centimetre of the water surface, spacing each other is also different, and called after the 1st ring successively from the near to the remote, the 2nd ring, the 3rd ring ... during the water surface in shooter launches with the proper angle bundle in a certain ring, bullet is upspring continues to do parabolic continuous spring flight on the water surface, in this process, bullet also may hit the water surface in some annulus, has to the last stopped rebounding.The score of this time shooting is the summation of the number of rings score value of the annulus water surface that hits: such as having hit the 1st ring, the 3rd ring, the 4th ring, the 6th ring and the 7th ring, then must be divided into the 1+3+4+6+7=21 branch.Match stipulates that also the 1 shooting number of times of taking turns is 10 bullets, and then 1 PTS of taking turns is the summation of 10 shooting marks.
Embodiment two: the water target shooting gun in the present embodiment is identical with embodiment one, but the bullet in the present embodiment has different with the bullet of embodiment one, its last bottom surface respectively has equally distributed 50 little potholes, the mean depth in each hole is about 0.02 centimetre, little pothole is circular, as the shape of " dimple ".After group launched out bore like this, when flying in air, suffered air rising and the power of sinking were bigger, thereby it is higher to takeoff on the water surface, and it is farther to fly.
Embodiment three: the water target shooting gun in the present embodiment is identical with embodiment one, but the bullet in the present embodiment has different with the bullet of embodiment one, its last bottom surface respectively has equally distributed 50 small embossments, each protruding average height is about 0.02 centimetre, projection is circular, as " circle cap " shape.After group launched out bore like this, when flying in air, suffered air rising and the power of sinking were bigger, thereby it is higher to takeoff on the water surface, and it is farther to fly.
Embodiment four: water target shooting gun in the present embodiment and embodiment one difference are that the vertical cross-section of gun barrel inwall is the ellipse of transverse axis greater than the longitudinal axis.This oval-shaped transverse axis diameter is 0.3 centimetre, and longitudinal axis diameter is 2 centimetres.It is different that bullet in the present embodiment and the bullet of embodiment one also have, and it is discoid oblate sphere shape, and the vertical cross-section at its center of passing also is oval, and this oval-shaped transverse axis diameter is 0.2 centimetre, and longitudinal axis diameter is 1.9 centimetres.
Embodiment five: the water target shooting gun in the present embodiment is identical with embodiment four, but the bullet in the present embodiment has different with the bullet of embodiment four, its last bottom surface respectively has equally distributed 50 little potholes, the mean depth of each pothole is about 0.02 centimetre, little pothole is circular, as the shape of " dimple ".After group launched out bore like this, when flying in air, suffered air rising and the power of sinking were bigger, thereby it is higher to takeoff on the water surface, and it is farther to fly.
Embodiment six: water target shooting gun in the present embodiment and embodiment one difference are that the vertical cross-section of gun barrel inwall is circular.This circular diameter is 2 centimetres.Bullet in the present embodiment also has different with the bullet of embodiment one, it is that diameter is 1.8 centimetres of spherosome shapes, and its surface has equally distributed 100 little potholes, and the mean depth in each hole is about 0.02 centimetre, little pothole is circular, as the shape of " dimple ".After group launched out bore like this, when flying in air, suffered air rising and the power of sinking were bigger, thereby it is higher to takeoff on the water surface, and it is farther to fly.
Embodiment seven: the water target shooting gun in the present embodiment is identical with embodiment six, but the bullet in the present embodiment has different with the bullet of embodiment six, its surface has equally distributed 100 small embossments, each protruding average height is about 0.02 centimetre, projection is circular, as " circle cap " shape.What particularly point out is, the big air line distance of amount that bullet has between behind the small embossment surperficial any 2 is 1.9 centimetres.After group launched out bore like this, when flying in air, suffered air rising and the power of sinking were bigger, thereby it is higher to takeoff on the water surface, and it is farther to fly.
Claims (10)
1, a kind ofly be used to impact the water target shooting gun of the water surface by the bullet jump flight, it is characterized in that: the vertical cross-section of the gun barrel inwall of described water target shooting gun is a rectangle, and promptly the vertical cross-section of bore is a rectangle.
2, water target shooting gun according to claim 1 is characterized in that: the vertical cross-section of the gun barrel inwall of described water target shooting gun is the ellipse of transverse axis greater than the longitudinal axis, and promptly the vertical cross-section of bore is the ellipse of transverse axis greater than the longitudinal axis.
3, water target shooting gun according to claim 1, it is characterized in that: the vertical cross-section of the gun barrel inwall of described water target shooting gun is a closed figures, its both sides are two parallel lines, and both sides respectively are one section elliptic curves in addition, and these two elliptic curves are towards external symmetry.
4, one be used in and impact the bullet of the water surface by the bullet jump flight, it is characterized in that: described bullet is a cylindrical shape, and the bullet bottom surface is to be in the state that parallels with the level cross-sectionn of bore in gun barrel.
5, a kind ofly be used to impact the bullet of the water surface by the bullet jump flight, it is characterized in that: described bullet is the oblate sphere shape, and promptly its level cross-sectionn is circular, and the vertical cross-section of passing the center is oval.
6, a kind ofly be used to impact the bullet of the water surface by the bullet jump flight, it is characterized in that: described bullet is the shape of top and the bottom after each is clipped a part by level with the center equidistant of oblate sphere, the level cross-sectionn that is it is circular, and the both sides of passing the vertical cross-section at center are two parallel lines, and both sides respectively are one section elliptic curves in addition.
7, according to claim 4 or the 5 or 6 described a kind of bullets of the water surface that are used to impact by the bullet jump flight, it is characterized in that: described bullet and bottom surface water surface touching have quantity greater than two pothole, and promptly the bottom surface of bullet has quantity greater than two inside recessed curved surfaces.
8, according to claim 4 or the 5 or 6 described a kind of bullets of the water surface that are used to impact by the bullet jump flight, it is characterized in that: described bullet and bottom surface water surface touching have quantity greater than two projection, and promptly the bottom surface of bullet has quantity greater than two the curved surface to outer process.
9, according to claim 4 or the 5 or 6 described a kind of bullets of the water surface by the bullet jump flight that are used to impact, it is characterized in that: described bullet and bottom surface water surface touching have quantity greater than two indenture.
10, a kind ofly be used to impact the bullet of the water surface by the bullet jump flight, it is characterized in that: described bullet is the spherosome shape, the bullet surface has quantity greater than two equally distributed potholes, and promptly the bullet surface has quantity greater than two equally distributed inwardly recessed curved surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410101441 CN1621774A (en) | 2004-12-20 | 2004-12-20 | Water target shooting gun and bullet thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410101441 CN1621774A (en) | 2004-12-20 | 2004-12-20 | Water target shooting gun and bullet thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1621774A true CN1621774A (en) | 2005-06-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410101441 Pending CN1621774A (en) | 2004-12-20 | 2004-12-20 | Water target shooting gun and bullet thereof |
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| Country | Link |
|---|---|
| CN (1) | CN1621774A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008309462A (en) * | 2007-05-15 | 2008-12-25 | Wataru Nakakarumai | Air soft gun device |
| CN110160728A (en) * | 2019-06-06 | 2019-08-23 | 南京航空航天大学 | A kind of air bubble of anti-bullet rotation |
-
2004
- 2004-12-20 CN CN 200410101441 patent/CN1621774A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008309462A (en) * | 2007-05-15 | 2008-12-25 | Wataru Nakakarumai | Air soft gun device |
| CN110160728A (en) * | 2019-06-06 | 2019-08-23 | 南京航空航天大学 | A kind of air bubble of anti-bullet rotation |
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