Strange experimental projo

[MINENAZ16]

Hello,
Even with google translation, I don't understant what is exactly this round :

https://ru-artillery.livejournal.com/466708.html

 

[Eggburt1969]

It looks like an inner flow-control body of a ramjet type of projectile. I'll have a more detailed look at a later point in time (over the weekend) when I'm free.

 

[HAZORD]

This hyperlink was in the discussion:

https://statehistory.ru/books/I--M--Kirillov-Gubetskiy_Sovremennaya-artilleriya/26

"One of the new attempts to increase the range of guns was the proposal of turbo-guns, made in 1917 by the French engineer Delamare-Maz.