BIG gyrojet predecessor


#1

http://sobchak.wordpress.com/2009/06/21/the-biggest-caliber-internally-mounted-weapons/
http://sobchak.wordpress.com/2009/11/29/news-sul-lanciarazzi-interno-del-skyraider/


#2

The Germans were first it seems. They started developments in the 1930s and several systems in various calibers made it into service.

Here the largest one with 420mm caliber (designated RZ100) as tested for aircraft armament.

balsi.de/Weltkrieg/Waffen/So … ete100.htm