<p>Coilable masts are extensively utilized in aerospace systems owing to their structural simplicity, reliability, and high deployment ratios. However, their application is constrained by compression-twist coupling motion during deployment, which induces large structure deformations and displacements. To address this limitation, this study proposes a parallel chiral coilable mast with synergistic control strategies. This design transforms the conventional unidirectional compression-twist motion into a bidirectional synchronous pure sliding deployment. Three pretensioned modes were developed for a single-bay unit based on diagonal constraints, leveraging the critical role of diagonals in achieving structural bistability. A topology-optimized multi-bay configuration enables directional rotation while maintaining structural stability via pretension modes. By redesigning structural constraints on the top and bottom disks, a decoupling strategy achieves pure linear motion at the top batten frame, significantly expanding the operational envelope. The parallel-designed chiral configuration is developed based on the synergistic control strategies of these two structural constraints. Numerical simulations and experimental validation confirm the effectiveness and feasibility of the synergistic control strategies. The chiral configuration facilitates multifunctional deployment capabilities in geometrically unconstrained environments, demonstrating substantial improvements over conventional designs.</p>