Tom Stanton has developed an interesting multistage catapult accelerator for launching aircraft models. This is the second example of his authorship for such applications. In the first one, the standard method for coilguns was used to accelerate a ferromagnet (in this case, a permanent magnet) with a chain of coils, now the original scheme is applied with acceleration not of a magnet, but of a coil in a field formed by a chain of fixed magnets. This construction attracted my attention, because I myself have been thinking a lot in this direction lately. Perhaps I will release a new video on this topic soon...