Additively manufactured thermoplastic rocket launch system for precisely positioning and firing rockets

Background

The defense sector relies heavily on robust rocket launch systems, including launch tubes and pods, deployed across ground, fixed-wing, and rotary-wing platforms. These mission-critical components are essential for delivering firepower in combat. As modern warfare evolves, there is an urgent need to modernize defense manufacturing capabilities to maintain operational readiness. Military forces require agile production methods capable of drastically reducing lead times and simplifying complex logistical networks. Furthermore, the ability to manufacture replacement parts near the point of use is critical for sustaining prolonged operations, ensuring troops have immediate access to equipment without relying on distant manufacturing hubs.

Current approaches to manufacturing these launch systems are hindered by severe logistical and structural limitations. Traditional fabrication methods depend on extensive, rigid supply chains that are highly vulnerable to disruption, resulting in prolonged production lead times that cannot meet rapid deployment demands. Additionally, legacy launch pods rely heavily on complex mechanical fasteners, such as bolts and rivets, to join structural segments. This reliance introduces excessive weight to the platform—reducing overall payload capacity and fuel efficiency—while complicating assembly and field maintenance. Consequently, conventional manufacturing techniques fail to provide the rapid, distributed, and lightweight production capabilities required today.

Technology

This advanced rocket launch system utilizes additive manufacturing to produce functional launch tubes and pods. Fabricated from aerospace-grade ULTEM 9085 thermoplastic via fused deposition modeling, the system accommodates size constraints by printing tubes in two segments. These sections connect using a fastener-less joggle joint, providing structural overlap and a consistent bonding surface without heavy mechanical hardware. The assembly features a novel housing geometry with an integrated backstop and legacy detent mechanism to ensure precise rocket positioning. Additionally, it incorporates aluminum box beams for structural support and custom electrical junction boxes for reliable firing continuity.

This technology is highly differentiated as the first additively manufactured launch system validated by the U.S. government. Unlike traditional methods, this solution drastically reduces production lead times, simplifies supply chains, and enables rapid manufacturing near the point of use. It is uniquely engineered to overcome the anisotropic properties of 3D-printed polymers through advanced finite element analysis, ensuring structural integrity under extreme dynamic pressure and thermal loads. Furthermore, the fastener-less joggle joint eliminates the weight of traditional bolts, while the ULTEM 9085 material guarantees an optimal strength-to-weight ratio and strict compliance with aerospace safety standards.

Benefits

• Reduces production lead times and simplifies supply chains by enabling rapid, on-demand manufacturing near the point of use.
• Provides a high strength-to-weight ratio using aerospace-certified ULTEM 9085 thermoplastic, significantly reducing overall system weight.
• Eliminates the added weight and complexity of mechanical fasteners through an innovative, structurally sound fastener-less joggle joint.
• Ensures high durability and safety with excellent thermal resistance (-50°F to 150°F) and strict compliance with flame, smoke, and toxicity (FST) standards.
• Seamlessly integrates legacy hardware, such as the M261 detent mechanism, directly into the 3D-printed structure for precise rocket positioning.
• Successfully withstands extreme dynamic pressure gradients and thermal loads during live-fire launches without catastrophic failure.
• Facilitates custom electrical integration and reliable firing continuity through purpose-built 3D-printed junction boxes.

Applications

• Lightweight drone rocket pods
• Modular missile launch tubes
• UAV payload deployment systems
• Small satellite launch dispensers
• Aircraft weapon mounting systems

Additional info

This rocket launch system utilizes FDM-printed ULTEM 9085 thermoplastic. The tubes feature two-segment construction joined by fastener-less joggle joints for structural overlap. Integrated detent mechanisms and internal backstops ensure precise positioning. Validated through finite element analysis and live-fire testing, the assembly incorporates aluminum box beams and custom junction boxes, accounting for anisotropic material properties and dynamic pressure loads to ensure structural integrity during deployment.