Electromagnetic Railgun Launchers: Direct Launch Feasibility

TLDR

Railgun research has advanced significantly, revealing potential for space propulsion and direct launch applications. The paper reviews current railgun capabilities and identifies key research challenges. The authors present requirements and a design for an Earth‑based railgun that can launch projectiles at speeds over 8 km/s.

Abstract

Considerable progress in understanding railgun operation, requirements, and limitations has been made. It appears that railguns may have potential application to space propulsion and direct launch. This paper discusses the state-of-the-art and expected capability of railgun systems. It includes the requirements and an example design of an Earth-based system capable of launching projectiles through the atmosphere at velocities greater than 8 km/s. The critical issues and problem areas that require investigation are described.