Numerical Evaluation of a Light-Gas Gun Facility for Impact Test

Table 2

Achievable muzzle velocities of projectile according to level III threat (9.62 mm, 9.6 g).

Gas	(m/s)	Barrel length m	m/s	m/s	Pressure N/mm²	Reservoir cm³
Nitrogen	527.99	29.88	378.51	442.19	20.00	1000.00
Helium	849.71	40.52	511.96	631.83	20.00	1000.00
Hydrogen	1054.78	46.74	571.28	725.14	20.00	1000.00