Yes, those jet engines are just big hollow tubes with absolutely no moving parts! No blades, compressors, widgets - it's like magic! And even if there was anything in this jet engine, all parts are undoubtedly coated with Teflon! As an added design bonus, nothing can pit them, especially small bits of glass being sucked in/expelled out at speeds that would remove all traces of flesh from a humanoid! Sorry. could not resist.