Abstract
The electroexplosive and electrothermal mechanisms and the principles of conduction and induction electrodynamics are used simultaneously to convert electromagnetic energy to the kinetic energy of projectiles. This approach is implemented on the basis of the well–known configuration of a coaxial pinch accelerator. It is established that there is an “active” lengths of the barrel on which the system ensures launching with nearly constant acceleration. For a barrel length of 340 mm and a barrel diameter of 17 mm, bodies with a mass of 1—12 g are accelerated to velocities of 3.4—1.45 km/sec with an energy conversion efficiency of 25—29% at a capacitive storage voltage of 1.75 kV and a discharge current of up to 150 kA. Bodies with a mass of 40—80 g (barrel diameter 25 mm are accelerated to velocities of 1.3—1.0 km/sec with an efficiency of 28—20% at a voltage of 3.5 kV and a current of up to 220 kA.
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REFERENCES
A. A. Sivkov, “Coaxial accelerator, ” Patent of the Russian Federation No. 21 1914 0 RF, 6 F 41 V 6/00, Appl. 06.24.97; Publ. 09.20.98, Bull. No. 26.
R. A. Burden, I. W. Gray, and C. M. Oxley, “Explosive foil injection (EFI) preaccelerator for electromagnetic launchers, ” IEEE Trans. Magn., 25, No. 1, 107–110 (1989). 8
A. A. Sivkov, “Sivkov's coaxial accelerator, ” Patent of the Russian Federation No. 2150652 RF, 7 F 41 V 6/00, Appl. 02.24.99; Publ. 06.10.00, Bull. No. 16.
J. G. H. Salge, Th. H. G. G. Weise, U. E. Braunsberger, et al., “Mass acceleration by plasma pulses, ” IEEE Trans. Magn., 25, No. 1, 495–499 (1989).
A. Loeb and Z. Kaplan, “A theoretical model for the physical processes in the confined high pressure discharges of electrothermal launchers, ” ibid., pp. 342–346.
M. D. Driga, M. W. Ingram, and W. F. Weldon, “Electrothermal accelerators: The power conditioning point of view, ” ibid., pp. 147–152.
V. I. Modzolevskii, “Plasma current shell in coaxial accelerators of the microsecond range, ” in: Proc. of the 1st All-Union Seminar on the Dynamics of a High-Current Electric Arc in a Magnetic Field (Novosibirsk, April 10–13, 1990), Inst. of Thermal Physics, Sib. Div., Russian Acad. of Sci., Novosibirsk (1990), pp. 220–251.
H. Knoepfel, Pulsed High Magnetic Fields, North Holland, Amsterdam-London (1970).
A. A. Sivkov, “Explosive switching in electrodynamic accelerators of masses, ” Izv. Vyssh. Uchebn. Zaved., Fiz., No. 4, 164–172 (1996).
M. Guillemot, A. Nicolas, and M. Roche, “Projectile launching by an electrothermal gun, ” IEEE. Trans. Magn., 25, No. 1, 207–209 (1989).
N. A. Zlotin, A. P. Krasil'shchikov, G. I. Mishin, and N. N. Popov, Ballistic Facilities and Their Use in Experimental Studies [in Russian], Nauka, Moscow (1974).
É. M. Drobyshevskii, B. G. Zhukov, and V. A. Sakharov, “Measurements of high velocities of projectiles with small geometrical dimensions, ” Pis'ma Zh. Tekh. Fiz., 19, No. 17, 45–48 (1993).
D. A. Andreev, A. A. Bogomaz, F. G. Rutberg, and A. N. Shakirov, “Acceleration of projectiles with small masses by the a Z-pinch high-current discharge at high initial density, ” Zh. Tekh. Fiz., 63, No. 1, 203–205 (1993).
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Sivkov, A.A. Hybrid Electromagnetic System for Acceleration of Solids. Journal of Applied Mechanics and Technical Physics 42, 1–9 (2001). https://doi.org/10.1023/A:1018829506854
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DOI: https://doi.org/10.1023/A:1018829506854