Energy conversion efficiency of electrical exploding foil accelerators

We evaluate the energy conversion efficiency of an electrical exploding foil accelerator that accelerates a thin dielectric (called flyer) to more than 1 km/s, which is propelled by electrically exploded bridge material. The effective flyer mass ejected from estimated impulse measurements obtained using gravity pendulum as well time-resolving velocity photonic Doppler velocimetry system. For two different sizes (0.2 and 0.4 mm), increase with input at section. maximum impulse, is, 4.0 km/s 67 µN s, respectively, are supplying 0.33 J energy. Upon increasing energy, also increases exceeds designed-bridge for both sizes. kinetic calculated based on mass, velocity, Both show comparable efficiencies: 27% 30% 0.2 mm bridges, respectively. specific least up 15 MJ/kg bridge, whereas above 30 decreases. This owing excessively high density in causes including surrounding materials. These results indicate should be optimized obtaining efficiency.