JP4249219B2 - 5.56MM ammunition for small arms - Google Patents

5.56MM ammunition for small arms Download PDF

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JP4249219B2
JP4249219B2 JP2006500258A JP2006500258A JP4249219B2 JP 4249219 B2 JP4249219 B2 JP 4249219B2 JP 2006500258 A JP2006500258 A JP 2006500258A JP 2006500258 A JP2006500258 A JP 2006500258A JP 4249219 B2 JP4249219 B2 JP 4249219B2
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projectile
diameter
ammunition
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JP2006515056A (en
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ブース、デレク
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BAE Systems PLC
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing
    • F42B12/78—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing of jackets for smallarm bullets ; Jacketed bullets or projectiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body

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Abstract

Described herein is a round of ammunition for firing from a gun having a rifled barrel, especially a small arms weapon. The round comprises a body core (7) which has a plurality of knurl lines (9) and associated grooves (6) formed over a portion of the body core (7). Jacket material (11) is provided over the body core (7) such that the inner diameter (10) of the jacket material (11) makes contact with the knurl lines (9). During firing of the round, the jacket material (11) deforms into the grooves (6) formed between the knurl lines (9) enabling the rifle engraving to take place with a substantially reduced axial force.

Description

この発明は、らせん溝が形成された銃身を有する武器に使用される弾薬、特に、小火器用の弾薬として改良された発射体の形状に関する。   The present invention relates to ammunition used in weapons having barrels with spiral grooves, and particularly to improved projectile shapes as ammunition for small arms.

発射体がらせん溝を有する銃身から発射されると、この発射体の形成材料がらせん溝を形成する溝と溝との間の平坦な山の部分間のスペースに押し込まれるように、この発射体が銃身に沿って移動するので、この発射体は変形するに違いない。このプロセスは彫刻（engraving）と呼ばれ、らせん溝の長さ方向のねじれによってこの発射体にスピンを起こさせる原因となる。   When the projectile is fired from a barrel with a spiral groove, the projectile is formed so that the material forming the projectile is pushed into the space between the flat peaks between the grooves forming the spiral groove. This projectile must be deformed as it moves along the barrel. This process is called engraving and causes the projectile to spin by twisting along the length of the helical groove.

発射体の変形、らせん溝に適切な力に適合した発射体の銃身に沿っての効率的な移動、発砲と同時に、銃発射火薬によって与えられた高い連続的な加速、および、らせん溝と発射体の間で起こる必然的に高速の角加速度と連合した力、これらは全て銃身の実質的な摩損の一因となる。   Projectile deformation, efficient movement along the barrel of the projectile adapted to the appropriate force in the spiral groove, high continuous acceleration provided by the gun-propellant at the same time as the firing, and spiral groove and launch The forces associated with the inevitably fast angular acceleration that occur between the bodies, all of which contribute to substantial wear and tear of the barrel.

もし、この摩損速度を減ずることができれば、銃身の寿命を延ばすこと、より速い弾丸の初速、それゆえに精度と致死率を向上させることを含めた実質的な利益が生じる。   If this wear rate can be reduced, there are substantial benefits including extending the life of the barrel, faster initial bullet velocity, and thus improving accuracy and mortality.

この理由のために、小火器用の弾丸に、通常は低摩擦で容易に変形する材料、例えば鉛が選択された。弾丸の全体的な密度を増大させるために、鋼を使用することが提案されている。しかしながら、鋼は容易に変形しないし、容認できない銃身の摩損の原因となる。一方、硬化された標的、例えばチタン／ケブラー製の身体防護具を貫通する際の弾頭先端の磨砕を最小にするためには、弾丸の材料として硬さは非常に望ましい性質である。これらの目的のために、ビッカース硬さは少なくとも５５０（１０ｋｇ荷重を使用した際）が最低限望ましい。   For this reason, bullets for firearms have been chosen for materials that usually deform easily with low friction, such as lead. It has been proposed to use steel to increase the overall density of the bullets. However, steel does not deform easily and causes unacceptable barrel wear. On the other hand, hardness is a very desirable property as a bullet material to minimize attrition of the warhead tip when penetrating a hardened target, such as a titanium / Kevlar body armor. For these purposes, a Vickers hardness of at least 550 (when using a 10 kg load) is minimally desirable.

これらの問題を克服することを探求し、小火器の弾丸を、研削した金属ジャケットで被覆した鋼製のコアから作ることが一般的に行われている。   In search of overcoming these problems, it is common practice to make firearm bullets from steel cores coated with a ground metal jacket.

この後者の解決策は実用的ではあるが、比較的高価な構造を持った弾丸となる。小火器の弾薬は大量に消費され、この種弾薬の市場は非常に競争が激しいので、このことは非常に重要な不利益である。   This latter solution is practical, but results in a bullet with a relatively expensive structure. This is a very significant disadvantage, as small arms ammunition is consumed in large quantities and the market for this kind of ammunition is very competitive.

米国特許第５６８６６９３号明細書には、鋼合金製の７．６２ｍｍ弾丸が開示されており、該弾丸は、前方の本体部分の直径が関連した銃のらせん溝の溝と溝との間の平坦な山の部分の直径に一致しており、後方の本体部分の直径が大きく複数の環状溝を備えている。本体部分は銅からなる被覆を備えていてもよい。実際、銅の被覆は潤滑剤として作用し、らせん溝の深さよりも厚くはない。らせん溝が形成された銃身から発射される時、らせん溝が銅の被覆を突き進み、弾丸の鋼製の本体がらせん溝によって彫刻される。前記明細書では、過度の銃身の摩損なしでこの彫刻が起こるように、鋼製の本体は軟質でなければならないことが強調されている。前記明細書中で述べられている鋼製本体の硬度の最高値は、ブリネル硬さ２１０であり、該値はビッカース硬さ２１３に等しいが、該値は望ましいビッカース硬さの最低値である５５０よりもはるかに低い。結果として、米国特許第５６８６６９３号明細書で開示されている弾丸は、望ましい標的貫通能力を欠いている。   U.S. Pat. No. 5,686,693 discloses a steel alloy 7.62 mm bullet, which is flat between the grooves of the gun's helical groove with a diameter associated with the front body portion. It corresponds to the diameter of a large mountain portion, the diameter of the rear main body portion is large, and a plurality of annular grooves are provided. The main body portion may be provided with a coating made of copper. In fact, the copper coating acts as a lubricant and is not thicker than the depth of the helical groove. When fired from a barrel with a spiral groove formed, the spiral groove penetrates the copper coating and the steel body of the bullet is engraved with the spiral groove. The specification emphasizes that the steel body must be soft so that this engraving can occur without excessive barrel wear. The highest hardness of the steel body mentioned in the specification is Brinell hardness 210, which is equal to Vickers hardness 213, which is the lowest desired Vickers hardness 550. Much lower than. As a result, the bullet disclosed in US Pat. No. 5,686,693 lacks the desired target penetration capability.

それ故に、もし、小火器の発射体の基本的な構成要素として、同時に前記発射体をらせん溝によって彫刻可能とし、容認できない摩擦あるいは摩損を引き起こさないで、前記発射体にジャケットを適用した高価な構造を避けることができ、ビッカース硬さが少なくとも５５０（１０ｋｇ荷重を使用した際）に等しい硬度を持つ鋼もしくは他の金属を使用する方法が見出せたら相当な利点である。   Therefore, as a basic component of a firearm projectile, at the same time the projectile can be sculpted by a spiral groove, without causing an unacceptable friction or wear, and an expensive It would be a considerable advantage if a method could be found that could avoid the structure and use steel or other metals with a hardness equal to at least 550 (when using a 10 kg load) Vickers hardness.

本発明によると、らせん溝が形成された銃身を有する銃と一発分の弾薬との組合せ体であって、銃身の長さ方向にらせん状に延びている溝と溝との間の平坦な山の部分によって分離されている複数のらせん溝の溝を備えた、らせん溝の形成された銃身と、発射体を備えた前記一発分の弾薬と、主体部分の主直径の部分の長さ方向に延びる対応する複数の溝を生成する複数のスプラインあるいはこぶ状の線を備えた実質的に円筒状の本体を備えた前記発射体と、前記複数のスプラインあるいはこぶ状の線を備えた前記主体部分の前記部分に対応する前記主体部分の前記主直径の部分を実質的に取り巻いている変形可能なジャケット手段と、を含み、前記発射体の部分が５５０ＨＶビッカース硬さ以上の金属から成形され、前記複数のスプラインあるいはこぶ状の線を備えた前記主体部分の最大直径が実質的に前記武器の銃身の最小内径と等しいかそれよりも小さくないことを特徴とするらせん溝が形成された銃身を有する銃と一発分の弾薬との組合わせ体が提供される。   According to the present invention, a combination of a gun having a barrel with a spiral groove formed therein and a single shot of ammunition, which is flat between the groove extending spirally in the length direction of the barrel Length of the main diameter portion of the main body portion of the barrel with the spiral groove formed with a plurality of spiral groove grooves separated by mountain portions, the one-shot ammunition with projectiles The projectile having a substantially cylindrical body with a plurality of splines or humps to produce corresponding grooves extending in the direction; and the plurality of splines or humps with the humps Deformable jacket means substantially surrounding the main diameter portion of the main body portion corresponding to the portion of the main body portion, wherein the projectile portion is formed from a metal of 550 HV Vickers hardness or higher. The plurality of splines Or a gun having a barrel with a spiral groove, characterized in that the maximum diameter of the main body portion with a hump-like line is not substantially equal to or smaller than the minimum inner diameter of the barrel of the weapon. A combination with the ammunition from the launch is provided.

通常、発射体は、本体前方部分の前方に、他の形状も可能であるがオジー形の弾頭部分をも有している。   Typically, the projectile also has an Ozzy-shaped warhead portion in front of the front portion of the body, although other shapes are possible.

通常、発射体の主体部分は、らせん溝の複数の溝の谷によって決定される直径よりも大きくない直径を有すべきである。前記らせん溝との係合に関して、複数のこぶ状の線あるいはスプラインが、前記複数のこぶ状の線あるいはスプラインに付随した溝の空隙に入り込んで変形するように設計されており、溝と溝との間の平坦な山の部分と係合して、らせん溝のねじれに起因して前記発射体のスピンを引き起こす。この変形は前記本体に、効果的な密閉を提供するように、らせん溝の溝を経て発射体を通過しての推進用のガスの漏れを拘束するか防ぐことによって、らせん溝との締まりばめを生じさせる。本体の長さと精密な直径は、これらの要素を考慮して設計されなければならない。   Typically, the projectile's main body should have a diameter that is not greater than the diameter determined by the troughs of the spiral grooves. With respect to engagement with the spiral groove, the plurality of hump-like lines or splines are designed to enter and deform into the gaps of the grooves associated with the plurality of hump-like lines or splines. Engage with the flat crest portion between them to cause the projectile to spin due to the twisting of the helical groove. This deformation can be achieved by tightening the helical groove by restraining or preventing leakage of propellant gas through the projectile through the helical groove to provide an effective seal to the body. Give birth. The length and precise diameter of the body must be designed with these factors in mind.

また、ジャケット材料の変形をもたらすのに必要で、発射体を銃身に沿って推進させるための力が過度でないことを確実にすることにも考慮しなければならない。このことが、通常は前記本体の直径がらせん溝の溝の直径よりも大きくてはいけないことの理由である。前記本体が銃身に沿って移動する際に、材料が前記溝の空隙に入り込んで変形することを可能にする、複数のこぶ状の線あるいはスプライン間に複数の空隙が存在することよって、この力は実質的に減ぜられる。   It must also be taken into account to ensure that the force necessary to drive the deformation of the jacket material and propel the projectile along the barrel is not excessive. This is why usually the diameter of the body should not be larger than the diameter of the spiral groove. This force is due to the presence of a plurality of voids between the plurality of hump-like lines or splines that allow the material to enter and deform the groove voids as the body moves along the barrel. Is substantially reduced.

好ましくは、前記複数のこぶ状の線の深さは、前記発射体の公称直径の約１％から１０％、であるべきであり、最適には２％から６％がよい。   Preferably, the depth of the plurality of hump lines should be about 1% to 10% of the nominal diameter of the projectile, optimally 2% to 6%.

高性能の弾薬は通常ビッカース硬さ５５０ＨＶを下回らないという場合を除いて、前記発射体本体のために選択される材料は、前記発射体が果たすべき機能にある程度までは依存するだろう。   The material selected for the projectile body will depend to some extent on the function that the projectile is to perform, except that high performance ammunition usually does not fall below Vickers hardness of 550 HV.

戦闘状態で用いられる戦争に用いる弾丸の弾薬の性質のために、鋼は適切な材料である。というのは、鋼は高価ではなく、冷間加工で容易に希望の形状に成形することができるからである。硬度が標的を破壊するための重要な性質であり、タングステン合金及びタングステンカーバイドは硬度があるという事実から、タングステンはもう一つの可能性のある材料である。   Steel is a suitable material because of the nature of bullet ammunition used in warfare. This is because steel is not expensive and can be easily formed into a desired shape by cold working. Tungsten is another possible material due to the fact that hardness is an important property for destroying the target and tungsten alloys and tungsten carbide are hard.

本発明は、独占的にではなく特に、公称口径２０ｍｍあるいはそれ以下、特に９ｍｍあるいはそれ以下の小火器の武器システムに適用される。   The present invention applies not only exclusively, but in particular to a weapon system of a firearm with a nominal caliber of 20 mm or less, in particular 9 mm or less.

以下、単なる例をあげて添付図面を参照しつつ、本発明を記述していく。図面中、
図１は、本発明に従って、らせん溝が形成された銃身を有する銃と共同して利用される、複数のこぶ状の線が組み込まれた小火器の一発分の弾薬発射体の概略図である。
図２Ａと図２Ｂは、それぞれ図１に示された発射体の、前記発射体の覆い（envelope）を付加的に描き加えたＡ−Ａ線断面図である。 The present invention will now be described by way of example only and with reference to the accompanying drawings. In the drawing,
FIG. 1 is a schematic diagram of a single ammunition projectile for a firearm incorporating a plurality of hump-like lines utilized in conjunction with a gun having a barrel having a spiral groove in accordance with the present invention. is there.
2A and 2B are cross-sectional views taken along line AA of the projectile shown in FIG. 1 with an additional depiction of the envelope of the projectile.

図１に示すように、小火器の弾薬発射体１は、主体部分２、先端部分３、及び主体部分に沿った、対応するスプライン５と空隙６を生成する複数の溝もしくはこぶ状の線４を含んでいる。   As shown in FIG. 1, the ammunition projectile 1 of a firearm has a main part 2, a tip part 3, and a plurality of grooves or hump lines 4 that generate corresponding splines 5 and gaps 6 along the main part. Is included.

前記発射体本体は細長い形状で、ビッカース硬さが少なくとも５５０の鋼から冷間加工されている。前記発射体の本体は所望の硬度あるいは他の物理的性質を得るために充分に熱処理されてもよい。前記発射体は実質的に円筒形状の主体部分２を含んでいる。   The projectile body is elongated and cold worked from steel with a Vickers hardness of at least 550. The projectile body may be sufficiently heat treated to obtain the desired hardness or other physical properties. The projectile includes a substantially cylindrical main body 2.

発射体本体材料の実質的な硬度のために、発射体は、チタン／ケブラー製の身体防護具のような種々の標的を貫通するのに非常に効果的である。さらに、この硬度は発射体先端形状の磨砕を最小にするのに役立ち、さらに標的貫通に効果的に貢献する。   Due to the substantial hardness of the projectile body material, the projectile is very effective at penetrating various targets such as titanium / Kevlar body armor. In addition, this hardness helps to minimize grinding of the projectile tip shape and further contributes effectively to target penetration.

図２Ａ及び図２Ｂは、図１のＡ−Ａ線断面図である。図２Ａには、発射体部分のコア７の複数のこぶ状の線９及び関連する溝の空隙６の詳細が示され、発射体部分のコア７がジャケット材料１１に囲まれている点が示されている。同様に、図２Ｂには、発射体部分のコア７の複数のスプライン５及び関連する溝の空隙８が示され、発射体部分のコア７がジャケット材料１１に囲まれている点が示されている。   2A and 2B are cross-sectional views taken along line AA in FIG. FIG. 2A shows details of the plurality of hump lines 9 and associated groove voids 6 of the projectile portion core 7, showing that the projectile portion core 7 is surrounded by the jacket material 11. Has been. Similarly, FIG. 2B shows a plurality of splines 5 and associated groove voids 8 of the projectile portion core 7, showing that the projectile portion core 7 is surrounded by the jacket material 11. Yes.

銃の薬室から、本体及び結合した被覆剤１３が、銃身のらせん溝部分へと通過する時に、本体及び結合した被覆剤１３のより大きい直径のために、前記ジャケット材料１１が、関係するスプライン５またはこぶ状の線９に付随した空隙６、８に入り込んで変形する。好ましくは、ジャケット材料１１の内径１０は、全てのらせん溝の溝（図示されていない）の直径と実質的に等しいか小さくなければならない。   Due to the larger diameter of the body and bonded coating 13 as the body and bonded coating 13 pass from the gun chamber to the helical groove portion of the barrel, the jacket material 11 is associated with splines. The gap 6 or 8 associated with the 5 or hump-like line 9 enters and deforms. Preferably, the inner diameter 10 of the jacket material 11 should be substantially equal to or smaller than the diameter of all spiral groove grooves (not shown).

複数の溝６，８が存在することで、前記ジャケット材料１１の必要な変形が助長されるので、実質的に縮減した軸方向の力でらせん溝による彫刻を行うことが可能となる。前記ジャケット材料１１が複数の溝６，８内に入り込んで変形することができるという事実は、発現すべき彫刻に必要な軸方向の力を劇的に減ずることに相当に寄与する。   Since the required deformation of the jacket material 11 is facilitated by the presence of the plurality of grooves 6, 8, engraving with the spiral grooves can be performed with a substantially reduced axial force. The fact that the jacket material 11 can penetrate and deform into the plurality of grooves 6, 8 contributes considerably to dramatically reducing the axial force required for the engraving to be developed.

それ故に、発射体部分の主要部を形成する材料の硬度にもかかわらず、この要素による銃身の磨耗は最小限になる。
当業者にとって、彫刻する力を減ずるというこれらの全ての事実は、減ぜられた銃身の磨耗、高い初速、それ故に致死率及び精度を向上させることに帰するであろうということが明らかだろう。 Therefore, despite the hardness of the material forming the main part of the projectile part, barrel wear by this element is minimal.
For those skilled in the art, it will be clear that all these facts of reducing the sculpting power will be attributed to reduced barrel wear, high initial velocity, and hence improved lethality and accuracy. .

また、本発明に従う銃と弾薬タイル（tile）の組み合わせの一部を形成する前記発射体は、対応する、例えば研削した金属ジャケット内の従来の発射体よりも製造費が相当に少なくなる。
本発明の発射体の最適設計パラメータは、本明細書の記載に基づいて、当業者が決定することができる。 Also, the projectile forming part of the gun and ammunition tile combination according to the present invention is considerably less expensive to manufacture than the corresponding conventional projectile, for example in a ground metal jacket.
The optimum design parameters of the projectile of the present invention can be determined by those skilled in the art based on the description herein.

本発明は、独占的にではなく特に、小火器の弾薬に適用される。特に、本発明は５．５６ｍｍ銃と弾丸に好適に適用される。   The invention applies in particular to ammunition in small arms, not exclusively. In particular, the present invention is suitably applied to 5.56 mm guns and bullets.

本発明による、らせん溝が形成された銃身を有する銃と共同して利用される、複数のこぶ状の線が組み込まれた小火器の一発分の弾薬発射体の概略図である。1 is a schematic view of a single ammunition projectile for a small firearm incorporating a plurality of hump-like lines utilized in conjunction with a gun having a barrel with a helical groove formed in accordance with the present invention; FIG. 図１に示された発射体の、発射体の覆いを付加的に描き加えたＡ−Ａ線断面図である。FIG. 2 is a cross-sectional view taken along line AA of the projectile shown in FIG. 1 with a projectile cover additionally drawn. 図１に示された発射体の、発射体の覆いを付加的に描き加えたＡ−Ａ線断面図である。FIG. 2 is a cross-sectional view taken along line AA of the projectile shown in FIG. 1 with a projectile cover additionally drawn.

Claims (13)

らせん溝が形成された銃身を有する銃と一発分の弾薬との組合わせ体であって、
銃身の長さ方向にらせん状に延びている溝と溝との間の平坦な山の部分によって分離されている複数のらせん溝の溝を備えた、らせん溝の形成された銃身と、
発射体を備えた前記一発分の弾薬と、
主体部分の主直径の部分の長さ方向に延びる対応する複数の溝を生成する複数のスプラインあるいはこぶ状の線を備えた実質的に円筒状の本体を備えた前記発射体と、
前記複数のスプラインあるいはこぶ状の線を備えた前記主体部分の前記部分に対応する前記主体部分の前記主直径の部分を実質的に取り巻いている変形可能なジャケット手段と、
を含み、前記発射体の部分が５５０ＨＶビッカース硬さ以上の金属から成形され、前記複数のスプラインあるいはこぶ状の線を備えた前記主体部分の最大直径が実質的に前記武器の銃身の最小内径と等しいかそれよりも小さくないらせん溝が形成された銃身と一発分の弾薬との組合わせ体。A combination of a gun having a barrel with a spiral groove and a single shot of ammunition,
A barrel formed with a spiral groove, comprising a plurality of spiral groove grooves separated by a flat crest portion between the grooves extending spirally along the length of the barrel;
The one-shot ammunition with projectiles;
Said projectile comprising a substantially cylindrical body with a plurality of splines or humps that produce a corresponding plurality of grooves extending in the length direction of the main diameter portion of the main body portion;
Deformable jacket means substantially surrounding the main diameter portion of the main body portion corresponding to the portion of the main body portion comprising the plurality of splines or hump-like lines;
A portion of the projectile is formed from a metal having a hardness of 550 HV Vickers hardness or more, and a maximum diameter of the main body portion having the plurality of splines or humps is substantially equal to a minimum inner diameter of the barrel of the weapon. A combination of a barrel with a helical groove that is not less than or equal to it and a single round of ammunition. 前記発射体は前記本体前方部分のオジー形の弾頭部分を備えている請求項１に記載の組合わせ体。The combination according to claim 1, wherein the projectile includes an Ozzy-shaped warhead portion at a front portion of the main body. 前記複数の溝の深さは、前記発射体の公称直径の約２％から６％である請求項１または請求項２に記載の組合わせ体。The combination according to claim 1 or claim 2, wherein the depth of the plurality of grooves is about 2% to 6% of the nominal diameter of the projectile. 前記複数の溝の深さは、前記発射体の公称直径の約１％から１０％である請求項３に記載の組合わせ体。4. The combination of claim 3, wherein the depth of the plurality of grooves is about 1% to 10% of the nominal diameter of the projectile. 前記発射体の本体は鋼、タングステン、タングステン合金、タングステンカーバイドの群から選ばれた材料から製作されている請求項１から請求項４のいずれか１項に記載の組合わせ体。The combination according to any one of claims 1 to 4, wherein the main body of the projectile is made of a material selected from the group of steel, tungsten, tungsten alloy, and tungsten carbide. 前記主体部分の直径は、らせん溝の複数の溝の谷によって決定される直径よりも小さいか等しい直径を有する請求項１から請求項５のいずれか１項に記載の銃と一発分の弾薬との組合わせ体。The gun and the ammunition for one shot according to any one of claims 1 to 5, wherein a diameter of the main portion has a diameter smaller than or equal to a diameter determined by a plurality of groove valleys of the spiral groove. A combination body with. 前記主体部分の直径は、らせん溝の複数の溝の谷によって決定される直径と実質的に等しい直径を有する請求項６に記載の銃と一発分の弾薬との組合わせ体。The combination of a gun and a single ammunition according to claim 6, wherein the diameter of the main portion has a diameter substantially equal to a diameter determined by a plurality of troughs of the spiral groove. 前記本体部分の直径は、前記複数の溝の谷によって決定される直径よりも小さいか等しい直径を有する請求項１から請求項７のいずれか１項に記載の銃と一発分の弾薬との組合わせ体。The gun according to any one of claims 1 to 7 , wherein the main body portion has a diameter smaller than or equal to a diameter determined by the plurality of groove valleys. Combination body. 請求項１から請求項８のいずれか１項に記載の銃と一発分の弾薬との組合わせ体に用いられる発射体であって、
実質的に円筒状の本体部分と、前記主体部分に沿って対応する複数の溝を生成することとなる縦方向に延在する複数のスプラインあるいはこぶ状の線と、
を含み、前記発射体はビッカース硬さが５５０以上の金属から成形され、前記複数のスプラインあるいはこぶ状の線を備えた前記主体部分の最大直径が実質的に前記武器の銃身の最小内径と等しいかそれよりも小さくない発射体。A projectile used for a combination of the gun according to any one of claims 1 to 8 and an ammunition for one shot,
A substantially cylindrical body portion, and a plurality of longitudinally extending splines or humps that will create a corresponding plurality of grooves along the main body portion;
And the projectile is formed of a metal having a Vickers hardness of 550 or more, and a maximum diameter of the main body portion having the plurality of splines or hump-like lines is substantially equal to a minimum inner diameter of the barrel of the weapon. Or a projectile not smaller than that. 前記環状溝の深さは、前記発射体の公称直径の約１％から１０％である請求項９に記載の発射体。The projectile according to claim 9, wherein a depth of the annular groove is about 1% to 10% of a nominal diameter of the projectile. 前記発射体の本体は鋼、タングステン、タングステン合金、タングステンカーバイドの群から選ばれた材料から製作されている請求項９または請求項１０に記載の発射体。11. A projectile according to claim 9 or claim 10, wherein the body of the projectile is made from a material selected from the group of steel, tungsten, tungsten alloy, tungsten carbide. 公称口径が９ｍｍあるいはそれ以下である請求項９から請求項１１のいずれか１項に記載の発射体。The projectile according to any one of claims 9 to 11, wherein the nominal diameter is 9 mm or less. 前記公称口径が５．５６ｍｍである請求項１２記載の発射体。The projectile according to claim 12, wherein the nominal diameter is 5.56 mm.
JP2006500258A 2003-03-27 2004-03-16 5.56MM ammunition for small arms Expired - Fee Related JP4249219B2 (en)

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