New technology allows 3D printing of satellite antennas right in orbit with plastic and sunlight, resulting in significant savings in launch costs.
Simulate a satellite launched into space, then use new technology to 3D print the antenna dish. Image: Mitsubishi Electric Corporation
Satellite antennas can be 3D printed in space with the help of sunlight thanks to a new method that promises to eliminate bulky satellite components that take up a lot of space in rockets, Space reported on May 21. The new method was developed by the Japanese technology company Mitsubishi Electric Corporation and has been patented. Accordingly, experts use a special resin that can turn into a sturdy solid material when exposed to ultraviolet radiation from the Sun in space.
To date, Mitsubishi Electric Corporation has only tested the technology with simulated space conditions in the test chamber. In tests, the team printed an antenna dish 16.5cm wide and it worked like a traditional satellite antenna.
The sensitivity of the antenna is directly related to the size. The larger the antenna, the better the signal is detected and transmitted. But size is no small issue when launching into orbit because the large antenna takes up a lot of space in the rocket. The antennas also have to be sturdy to withstand launch shake, which makes them heavy. The heavier the satellite, the more expensive it is to launch.
3D-printed parts in space will be much thinner and lighter because they won’t be subject to vibrations when launched. So if you 3D print the antenna directly in space, operators will save money with a lighter satellite. In addition, they can equip small satellites with antennas much larger than today.
The design of antennas for spacecraft was fraught with challenges due to conflicting requirements for signal transmission capacity, broadband, and light weight. The new technology paves the way for 3D printing of massive structures in space that don’t have enough space in rockets, Mitsubishi Electric Corporation said.
The light-sensitive resin also has good heat resistance, operating at temperatures up to 400 degrees Celsius, higher than what spacecraft have to endure in orbit around the Earth. According to Mitsubishi Electric Corporation, this is the first plastic suitable for use in a vacuum because it doesn’t need atmospheric oxygen to prevent it from solidifying too quickly. The use of natural ultraviolet light also helps to reduce the power consumption of the 3D printer.
Thu Thao (According to Space)
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