Abstract: To investigate the pressure load characteristics generated by the reaction of liquid oxygen/ liquid nitrogen
(LO2 / LN2) energy storage cylinders,experiments on the reaction output process and air shock wave tests were conducted
based on LO2 / LN2 energy storage cylinders. According to the test results,the action process can be divided into three stages:
low-speed combustion stage,deflagration-phase transition stage,and continuous-decay stage. Within a certain range,both the
peak overpressure and positive pressure duration of the air shock wave increase with the increase of liquid filling amount,indicating
that the energy of the air shock wave enhances as the liquid filling amount increases. By combining theoretical calculations,
numerical simulations,and other methods,the measured data of combustion-phase transition shock waves from LO2 / LN2
energy storage cylinders were compared with the shock waves generated by spherical and strip-shaped TNT explosions. The load
characteristic parameters,such as energy release rate,peak overpressure of air shock waves,and positive pressure duration,
were focused on. The results show that compared with the strip-shaped TNT charge deduced by the overpressure criterion equivalence,
at distances of 2 m and 3 m,the peak overpressure of the shock wave generated by the strip-shaped TNT charge is
34. 9% to 80. 8% higher than that of the energy storage cylinder,while the positive pressure duration of the shock wave is
7. 9% to 25. 8% shorter. The shock wave generated by the reaction of LO2 / LN2 energy storage cylinders exhibits the characteristics
of "low peak value and high energy". Compared with TNT explosions,at the same distance,its shock wave has a smaller
peak overpressure,a longer positive pressure duration,and slower energy decay. The energy release rate and work process of the
energy storage cylinder are fundamentally different from those of TNT. These results can provide important references for the basic research and engineering applications of LO2 / LN2 energy storage cylinders.