A method of maintaining the orientation of a plane impactor accelerated in a high-pressure gas channel

D. E. Guk, E. E. Meshkov

Sarov Physical Technical Institute, National Research Nuclear University Moscow Engineering Physics Institute, Sarov, Nizhny Novgorod oblast, Russia

Abstract: The task of accelerating a thin plane impactor in a cylindrical channel with high-pressure gas (in particular, detonation products of acetylene–oxygen fuel mixture) encounters the well-known problem of “falling paper sheet” since the impactor motion in the channel is also unstable with respect to lateral (radial) displacements. This displacement can lead to breakage of the symmetry of flight, skewness of the impactor, and a sharp decrease in the achieved velocity. It has been experimentally established that the impactor orientation can be retained by limitation of its lateral shifts with the aid of several thin filaments of a polymer thread (fishing line) arranged uniformly on the inner channel surface along the cylinder generatrix.

Keywords: flat thin striker, compressed gas, limitation of lateral displacement of the striker, impact on the water layer.

Received: 21.11.2017
Revised: 11.04.2019
Accepted: 11.04.2019

DOI: 10.21883/PJTF.2019.14.48016.17128

 English version: Technical Physics Letters, 2019, 45:7, 704–706

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