Again we can compare
the maximum muzzle speeds obtained open loop triggering and optical triggering.
Table 1 shows the resulting speeds for each projectile type.
Open Loop Speed (m/s)
| Optical Speed (m/s)
|4 mm Cored
|6 mm Cored
1. Comparison of maximum open loop speed and optical speed.
we can see that the optical method gives a slightly lower muzzle speed with this
coil. The difference is small and indicates that the optical timing setup is close
at the operating curves in fig 1 shows that the difference between the supply
power and the source power is increasing due to the greater current demand.
1. Voltage, current and power curves.
2 contains details of the energy and efficiencies for a solid projectile.
| Source Energy
2. Efficiency comparisons for solid projectile.
can see that all the efficiency ratings for coil B are somewhat better than those
for coil A, also, the proportional difference in efficiencies has increased as