A Long Pulse High-g Generation Technology Based on Electromagnetic Energy and Its Control Method

A long pulse high-g generation technology based on electromagnetic (EM) energy is proposed in this article, which uses an electromagnetic rotation-starting (EMRS) technology we pioneered. This technology enables translational objects start to rotate at high speed within a very short time. The centrifugal acceleration generated through this technology can simultaneously feature ultrahigh g values, rapid loading, and wide pulse width. We designed an analysis model based on the current filament method to study the EMRS technology and provided a control method for high-g output in this article. An experimental prototype was designed, and successful experiments were carried out to validate the feasibility of this technology. In the experiments, the acceleration reached 7.27 × 10<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> g from 0 g in 2.9 ms, and the acceleration above 6 × 10<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> g was maintained for 15.7 ms. Utilizing the technology proposed in this article is expected to get the acceleration above 2 × 10<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sup> g and meet the requirements of the research on the antilong-pulse high-g impact technology of projectile-borne devices in electromagnetic rail launch (EMRL) and other scientific research fields.