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

Table 3

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	564.22	39.22	382.31	450.60	20.00	2500.00
Helium	934.14	52.79	517.89	646.69	20.00	2500.00
Hydrogen	1187.90	61.34	578.38	744.20	20.00	2500.00
Nitrogen	584.19	47.72	384.07	453.41	20.00	5000.00
Helium	982.84	64.08	521.02	653.54	20.00	5000.00
Hydrogen	1268.56	74.78	582.33	750.10	20.00	5000.00