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Salyut 3 featured a “self-defense” gun purportedly designed by Alexander Nudelman for station use. Some reports suggest it was outfitted with a Nudelman-Rikhter “Vulkan” gun, a modified version of the 23mm Nudelman aircraft cannon, or conceivably a Nudelman NR-30 30mm gun. Subsequent Russian accounts propose the gun was the relatively obscure Rikhter R-23, not widely recognized in Western sources. Allegedly, Pavel Popovich has corroborated these assertions.
![](https://i0.wp.com/www.spacerockethistory.com/wp-content/uploads/2024/05/P1-Almaz_drawing.svg_.png?resize=150%2C150&ssl=1)
Almaz Military Salyut Station Configuration
![](https://i0.wp.com/www.spacerockethistory.com/wp-content/uploads/2024/05/P2-Pop.jpg?resize=150%2C150&ssl=1)
Pavel Popovich
![](https://i0.wp.com/www.spacerockethistory.com/wp-content/uploads/2024/05/P3-Yuri_Petrovich_Artyukhin.jpg?resize=150%2C150&ssl=1)
Yuri Artyukhin