A Conceptual Engineering Framework for Deployable Expanding-Spiral Rotational Launch Systems Toward Future Deep-Space Missions

Interstellar exploration remains one of the greatest technological challenges facing humanity. Although remarkable advances have been achieved in propulsion systems, spacecraft engineering, and space navigation, current propulsion technologies remain insufficient for practical travel across interstellar distances within human timescales. Consequently, alternative conceptual architectures that complement conventional propulsion methods deserve systematic scientific investigation. This paper proposes a conceptual engineering framework for an Expanding-Spiral Rotational Launch System (ESRLS) designed as a potential auxiliary launch architecture for future deep-space missions. Unlike conventional launch systems, the proposed concept employs a deployable spiral structural configuration extending outward from a rotating central spacecraft. The spiral geometry is intentionally designed so that each successive turn possesses a larger radius than the previous one, thereby forming an expanding spiral rather than a conventional constant-radius helix. This geometric configuration is examined from the perspectives of rotational mechanics, structural engineering, deployment dynamics, energy transfer, and spacecraft system architecture. The objective of this study is not to demonstrate or claim faster-than-light travel. Instead, the work investigates whether large rotating deployable structures could, in principle, provide useful initial kinetic conditions for future spacecraft while remaining fully consistent with established physical laws. Throughout the paper, the limitations imposed by Special Relativity, conservation laws, structural mechanics, material strength, dynamic stability, and human survivability are explicitly acknowledged. These constraints define the practical boundaries within which such concepts must be evaluated. A multidisciplinary engineering methodology is adopted, integrating concepts from classical mechanics, aerospace engineering, structural dynamics, materials science, systems engineering, and conceptual spacecraft design. Rather than proposing an immediately realizable technology, the paper introduces a research framework intended to stimulate future analytical studies, numerical simulations, optimization techniques, and experimental investigations involving rotational launch architectures. The proposed expanding-spiral configuration is further discussed in terms of its potential advantages for structural deployment, gradual load distribution, compact launch packaging, and future large-scale space construction. Possible engineering challenges including dynamic instability, vibration modes, tensile loading, control complexity, and deployment reliability are also identified and discussed. Finally, the study distinguishes carefully between established engineering analysis and speculative long-term concepts. By maintaining this distinction, the paper aims to provide a scientifically responsible conceptual contribution while encouraging future interdisciplinary research at the intersection of rotational dynamics, advanced spacecraft architecture, and deep-space transportation.

کلیدواژه ها:

Conceptual Engineering ، Deep-Space Missions ، Rotational Launch Systems ، Expanding Spiral Structures ، Spacecraft Architecture ، Rotational Dynamics ، Structural Deployment ، Aerospace Engineering ، Future Space Transportation ، Systems Engineering