New Delhi, May 15: The Moon experiences scorching heat during the day and bone-chilling cold at night. In light of this, NASA has taken a significant step towards preparing materials for future missions to the Moon, Mars, and other planets.
NASA has developed a new technology that simulates the extreme cold of the Moon’s night, allowing for the testing of materials and equipment without the use of liquid gases. Engineers at NASA’s Glenn Research Center in Cleveland have created a machine called the Lunar Environment Structural Test Rig (LESTR). This machine can test materials, electronics, and space hardware at extremely low temperatures of 40 Kelvin, or approximately -388 degrees Fahrenheit.
NASA plans to establish a lunar base at the Moon’s south pole, where temperatures fluctuate significantly between day and night. In such conditions, standard materials like rubber can become brittle, circuits may fail, and electrical connections can freeze and break. Understanding the behavior of materials in extreme temperatures is crucial. Previously, NASA used liquid cryogens such as liquid nitrogen, hydrogen, and helium for testing. These extremely cold liquids were stored in specialized tanks. Now, LESTR can replace this outdated method.
The unique feature of LESTR is that it operates entirely as a dry system, eliminating the need for any liquid. It uses a high-power cryocooler to dissipate heat.
Ariel Dimston, the technical lead for LESTR, stated, “Just as no building can be constructed without accurate material information, no space mission can succeed without understanding material behavior.”
According to Dimston, LESTR is safer, more cost-effective, and easier compared to traditional methods. It eliminates the complexities associated with liquid cryogens, such as safety equipment, special valves, and sensors. This reduction in complexity lowers time, costs, and risks. This new technology will have applications across various fields.
Additionally, NASA’s team is using LESTR to test new materials for next-generation spacesuits, rover tires, and shape memory alloys. These alloys can return to their original shape after being bent, stretched, or cooled, making them highly beneficial for rovers navigating the Moon and Mars’ rugged terrain.
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