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The engineers are performing multiphysics thermal and structural simulations, along with advanced materials simulations, to figure out how to keep electronics and cryogenics systems within temperature specifications in the wide temperature range the spacecraft will experience while in transit and when sitting on the moon’s surface. They are also using Ansys Mechanical to perform load analysis on all metallic components, as well as to reduce mass as much as possible while maintaining structural integrity under the high stress conditions of spaceflight.

This is the first time anyone has used methane as a fuel for in-space propulsion.

As part of the Ansys Startup Program, which gives fledgling companies access to Ansys simulation software at a fraction of the list price, Intuitive Machines engineers are using Ansys Fluent to solve liquid oxygen/methane heat transfer challenges in the propulsion system. The prototyping constraints make engineering simulation a key to achieving the goal. The first flight vehicle that Intuitive Machines builds will be the one that goes to the Moon, greatly limiting their testing time. With such a tight timeline, they will not have the luxury of building and testing multiple prototypes, such as the earlier Apollo missions in the 1960s, to incrementally work out the bugs. Considering lunar landings have until now been the “purview of superpowers,” as Steve Altemus, one of the founders of Intuitive Machines likes to point out, and that no company has ever landed on the Moon, this is quite a big challenge. SpaceX informed Intuitive Machines that due to unique mission requirements the earliest available flight opportunity was in the first quarter of 2022. When Intuitive Machines of Houston, Texas, won the contract in 2019 to land five NASA payloads safely on the Moon, they had a much shorter timeline. The successful Apollo 11 mission in July 1969 fulfilled Kennedy’s vision and stands as a testament to human ingenuity and valor. This gave NASA engineers a little over seven years to overcome the many challenges involved in putting men on the Moon and returning them safely to Earth. 12, 1962, that 'We choose to go to the Moon,' he set the goal as the end of the decade.

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