Propulsan

Propulsan is a hypothetical class of high-energy chemical propellants proposed for future spacecraft propulsion. In theoretical and speculative propulsion studies, propulsan denotes a family of energetic formulations designed to deliver high specific impulse with comparatively clean combustion, enabling higher performance with reduced nozzle erosion and soot formation. The concept is used to explore potential trade-offs between energy density, storability, and safety in next-generation propulsion systems.

Formulations of propulsan are described as compounds or mixtures that pair a reactive organic fuel with a dense oxidizer in a stable liquid or hybrid form. Proponents emphasize properties such as high energy density, favorable combustion temperatures, and reduced byproducts, while acknowledging challenges related to sensitivity to shock, compatibility with engine materials, and the need for stringent thermal management. Because the materials are energetic, storage and handling require robust containment and remote processing environments.

Research on propulsan has largely occurred in academia and theoretical engineering, with limited laboratory tests and simulations illustrating potential performance benefits and risk factors. No widely adopted formulation has entered routine production, and practical deployment would depend on advances in synthesis, scale-up, safety, and environmental impact of combustion products.

In summary, propulsan remains a topic of propulsion research as a theoretical means to improve chemical rocket performance. Related areas include chemical propulsion, green propellants, and advanced energy-dense materials.