Question

A 155-mm howitzer with a barrel 2 m long is charged with 1 kg of propellant that occupies 20 cm of the barrel length. The projectile has a mass of 2 kg. When the gun fires, the powder generates gas at 2400 K essentially instantaneously, that is, before the projectile moves. The subsequent fast gas expansion can be considered adiabatic. For a molecular weight and heat capacity of dry air, (a) what is the muzzle velocity of the projectile?

Answer 1