Intelligent Trajectories: Harnessing Artificial Intelligence for Next Generation Missile and Propellant Design

Abstract

The rapid evolution of artificial intelligence (AI) has unlocked transformative pathways for high-performance aerospace engineering, yet its integration into missile and propellant design remains nascent. This study investigates a hybrid AI-driven framework that unites physics-based modeling, data-centric learning, and multi-objective optimization to accelerate the conception, validation, and refinement of missile airframes and solid-propellant formulations. First, a physics-informed neural network (PINN) is trained on a curated database of historic missile geometries, material properties, and flight-test data, enabling the rapid prediction of aerodynamic coefficients and structural loads across a broad design envelope. Second, a generative adversarial network (GAN) produces candidate airframe topologies that satisfy stealth, maneuverability, and thermal-signature constraints while respecting manufacturability rules encoded as conditional priors. Third, a reinforcement-learning (RL) agent iteratively proposes propellant grain morphologies and composite chemistries, receiving reward signals from a high-fidelity thermochemical solver that evaluates specific impulse, burn rate stability, and mechanical integrity. The AI pipeline operates in a closed-loop fashion: surrogate models quickly screen millions of configurations, the RL agent fine-tunes promising candidates, and the most viable designs are passed to a reduced-order CFD/combustion suite for verification. Compared with conventional manual iteration, the proposed methodology reduces total design cycle time by ≈73 %, discovers 12 % higher specific-impulse propellants, and yields airframe shapes that lower radar cross-section by 18 % without sacrificing payload capacity. Sensitivity analyses demonstrate robustness against uncertainties in material aging and launch-environment variability. The findings affirm that AI can transcend its role as a mere optimization tool, becoming an autonomous co-designer that internalizes domain physics, explores unconventional solution spaces, and expedites the translation from concept to flight-ready hardware.