A series system throwing a batch of elastic projectiles from a tube launcher locked by a diaphragm

Methods and results of examination of a multiprojectile tube launcher are presented. A linear displacement of succesive projectiles along the tube was defined and a pressure behind the pusher plate was measured. Complementary tests were necessary to describe completely the launch process during which the friction of the pusher plate and projectiles as well as the elasticity and the diaphragm rapture forces were found. The forces and pressures values measured were approximated to mathematical functions. The launch model throwing a batch of projectiles displaced under a pressure resulting from ejection charge was verified in a series of numerical calculations. Computed outlet velocities of the projectiles were compared with those obtained in experiments.