
Specialists, rocket scientists conducted an interesting test.
First they created on a 3D printer rockets, and then tried it. Scientists at mit were satisfied, because the engine have melted a bit because printed entirely from plastic.
This, according to experts, a good result, and you can continue testing. Further, according to the plan of building a rocket out of plastic. Its advantages are that it is easier and more importantly cheaper than conventional missiles of metal.
These tests are carried out in order to reduce the cost of raketostroenie. The printer that printed the engine only cost me 14 thousand dollars, which is cheaper than for metal parts.
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Source: News Yu