Recoilless Cartridges & Projectiles

Question 1

What are the two types of recoiless ammunition designs?

Answer 1

Perforated Cart Case
Solid Cart Case with blow out disc

Question 2

Explain the method of operation of the solid cart case with blow out disc

Answer 2

Propellant charge initiated, pressure builds up, blow out disc ruptures, projectile propelled forward and the propellant gases escape rearward

Question 3

Explain the method of operation of the perforated cart case

Answer 3

On firing prop charge initiated
Sheath ruptures allowing gasses to escape through holes in cart case, into annular space out the venturi
Pre-rifled projectiles are used to alleviate pressure build up

Question 4

What are the disadvantages of the RCL system?

Answer 4

Flash/Dust signature
Low velocity
Large propelling charge