厄利孔 50x335 501 mk型弹药简介

The US Navy contemplated two calibres of automatic anti-aircraft cannon: 35mm and 50mm.

美国海军考虑了两种不同的高炮口径:35毫米和50毫米。

The results of the studies conducted during 1949 and 1950 formed the basis for a mandate which Oerlikon received from the US Navy to develop naval guns in the calibres 35mm and 50mm.  As a result, the 35mm twin naval turret was constructed and delivered to the US Navy.  The ammunition and cannon then became the basis for the terrestrial Oerlikon twin AA gun with Contraves fire control system.

在1949年和1950年期间进行的研究结果形成了厄利孔从美国海军获得的开发35毫米和50毫米口径舰炮的授权的基础。作为结果，35毫米双联炮塔被建造并交付给美国海军。弹药和火炮炮随后成为厄利孔的地面双防空炮与康特拉夫火控系统的基础。

The 50mm project, which was designated 501 MK (50mm type 1 machine cannon), does not appear to have gone beyond internal ballistics testing in a pressure barrel."

而50mm项目被命名为501 MK (意为50mm 1型机炮)，似乎没有通过在压力枪管（一种测验膛压的弹道枪管）中进行内部弹道测试。”

Source: An article by Bob Gerber in April 2011 issue of the ECRA Bulletin (No.552)

来源:Bob Gerber在2011年4月ECRA公报(第552期)上的一篇文章

Bob goes on to provide more detailed information including a measured drawing of the 50 x 355 501 MK (which is not the same as any of the 50mm examples in the “forest” study). The relevant page in the ECRA Bulletin is shown below:

Bob继续提供了更详细的信息，包括50 x 355 501 MK的测量图纸(这与“forest”项目中的任何50mm示例都不一样)。ECRA公告的相关页面如下:

另外的照片显示，除了35x228和40x364R Bofors外，仅有的两个仍然存在的50x355弹药筒(在Schweizerischen Militärmuseum fullreuenthal展出)：

不同尺寸的炮弹大小对比：

(左到右)

47-60mm EXPERIMENTAL CARTRIDGES FOR AUTOMATIC WEAPONS

47x326R Vickers Class P (ac/AT)

47x428R Vickers 3½ pr (naval AA, repA)

50x330 (Supershot, necked-up 35x228, German 1980s, RepP),

50x355 501 MK (Oerlikon for USN, late 1950s, repA)

55x450B Gerät 58/MK 114 (German AA/ac, late-WW2, repA)

57x515R 6pr 6cwt (British AA, 1940s)

60x408R (IMI/OTO 1980s AFV)