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NASA conducts destructive inspection of large rocket SLS fuel tank. Utilizing structural limits to improve design later-Engadget Japan

On December 5th, an inspection conducted at the NASA Marshall Space Flight Center in Alabama used a huge hydraulic piston to gradually apply compression, tension, and bending forces to the vessel. Sensors that measure pressure, temperature, and stress installed at each location measure numerical values, and the tank can withstand more than 260% of the expected flight load for 5 hours after structural buckling occurs Confirmed. In addition, the load when buckling occurred was within 3% of the error predicted by the Boeing test evaluation group in charge of development, indicating that high reliability in tank design was obtained.

“We deliberately applied pressure to the limits of the structure and destroyed this vessel, which exposes the system to conditions leading to failure and helps build the rocket ideally. I'm going to get additional information. " “ This pressure vessel inspection is the biggest failure inspection in NASA's pressurized tank history, '' said Mike Nichols, a lead test engineer at the Marshall Space Flight Center. I thought it would be useful.

NASA said that the development of the first stage of the most complex rocket after Saturn V was completed because the results were as expected. SLS will be used to launch the Orion spacecraft in the Altemis I mission scheduled for 2020 at the time of writing.
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