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

Table 4

Achievable muzzle velocities of projectile according to level III threat (40 mm, 14.6, and 19.6 g) with sabots (5 to 10 g).

Gas	(m/s)	Barrel length m	m/s	m/s	Pressure N/mm²	Reservoir cm³
Projectile according to level III threat with 5 g sabot (40 mm diameter; 14.6 g weight)
Nitrogen	510.61	1.40	—	—	20.00	1000.00
Helium	807.61	2.00	—	—	20.00	1000.00
Hydrogen	988.71	2.31	—	—	20.00	1000.00
Projectile according to level III threat with 10 g sabot (40 mm diameter; 19.6 g weight)
Nitrogen	493.94	1.73	—	—	20.00	1000.00
Helium	771.79	2.42	—	—	20.00	1000.00
Hydrogen	936.31	2.79	—	—	20.00	1000.00
Projectile according to level III threat with 5 g sabot (40 mm diameter; 14.6 g weight)
Nitrogen	551.01	1.85	—	—	20.00	2500.00
Helium	901.18	2.61	—	—	20.00	2500.00
Hydrogen	1133.42	3.00	1133.42	—	20.00	2500.00
Projectile according to level III threat with 10 g sabot (40 mm diameter; 19.6 g weight)
Nitrogen	538.41	2.32	—	—	20.00	2500.00
Helium	872.19	3.15	871.79	—	20.00	2500.00
Hydrogen	1088.17	3.65	1082.25	—	20.00	2500.00