NASA's recent selection of seven companies for contract awards under the Mars Exploration Program's STRIDE initiative marks a significant step forward in the development of advanced robotic surface mobility for future Mars exploration. This initiative aims to address the challenges faced by current Mars rovers, such as mobility issues in soft sand and dust storms that hinder solar power generation. The potential value of these contracts is approximately $17 million, with work set to commence in Q3 2026. The selected companies bring a wealth of expertise in composite materials and innovative mobility systems, offering a promising outlook for Mars exploration.
One of the key players in this endeavor is AeroVironment, which played a pivotal role in the design and development of the Ingenuity Mars Helicopter's airframe and major subsystems. AeroVironment's use of Toray Advanced Composites' carbon fiber prepreg resulted in the helicopter's successful four carbon fiber rotor blades and four carbon composite landing legs. This technology has paved the way for NASA's testing of longer, stronger carbon fiber composite blades for larger, more capable next-generation Mars helicopters.
Astrobotic's Peregrine lunar lander, carrying the Iris nano-rover, showcases the use of carbon fiber composite wheels with a vacuum-infusion process to mold spoked, cleat-like grousers for traction on loose regolith. This design directly addresses the soft-terrain problem that plagued the Mars Exploration Rovers, Spirit and Opportunity. Venturi Astrolab's FLEX rover, on the other hand, employs a hyper-deformable wheel with a unique combination of stainless steel blades and relatively inextensible composites, held together by a proprietary super-elastic material.
Intuitive Machines' Nova-C lander utilizes an all-composite, unibody Type 5 pressure vessel design, showcasing the material's corrosion resistance and compatibility with cryogenic propellants. This mass savings is crucial for Mars surface systems, where every kilogram not spent on structure can be allocated to science payload or extended range. Aegis Aerospace, a result of the merger between Alpha Space Test & Research Alliance and MEI Technologies, has been instrumental in studying composite material degradation under various environmental conditions through the Polymers and Composites Experiment (PCE) on the International Space Station.
The Artemis program, a NASA initiative, aims to build a knowledge base for future human expeditions to Mars. By sending astronauts on increasingly difficult missions to the Moon and establishing a sustainable human presence via a base camp, NASA plans to develop Mars mobility design concepts. The STRIDE awardees' application of composites in these projects will be closely monitored by CW, offering valuable insights into the future of Mars exploration and the potential of composite materials in space technology.
