Rocket that went into space from New Zealand on 25 may, was special. She not only became the first private launch of a platform, but was equipped with the engine almost fully assembled with the help of 3D printing. Perhaps this is not the first “3D-printed rocket into space” as you might think from the title, but it highlights how seriously this technique is the production of perceived space industry.
The team behind the rocket Electron American company RocketLab, they say that the engine was printed in 24 hours and has increased efficiency and performance in comparison with other systems. Exact details of the printed components yet. But probably many of them were designed to minimize weight while maintaining structural characteristics, while other components may have been optimized to provide efficient flow of liquid. These benefits — reducing weight and potential new projects — represent a significant part of why 3D printing should be place in space, and not the last.
3D printing, as we know, is great for creating complex shapes. For example, lattice structures are formed such as to weigh less, but to be as strong as and similar hard components. This allows you to create optimized, lightweight parts that were previously impossible or cost-effective to produce using more traditional approaches.
Microresearch Boeing is an example of how to bring to the extreme the approach to create mechanically strong structure, 99.9% consisting of air. Not all the process of three-dimensional printing can achieve, but even the weight savings of a few percent on airplanes and spacecraft can lead to great benefits through the use of less fuel.
3D printing tends to work best for the production of relatively small, complex parts, not large structures, in which the cost of material and processing costs outweighs any benefits. For example, a redesigned nozzle can enhance mixing of the fuel in the engine, which will lead to increased efficiency. The increased surface area of the heat shield using a patterned and not a flat surface can mean that heat is transferred more efficiently, which will reduce the risk of overheating.
These methods can also reduce the amount of material that gets wasted during production. This is important because aerospace components, usually made of expensive and rare materials. 3D printing can also produce the whole system at once, instead of multiple assembled parts. For example, NASA used it to reduce the components in one of their rocket injectors 115 to 2. In addition, 3D printers can easily make a small number of parts, as required by the space industry, without the need to create costly production tools.
In orbit
3D printers can also find application in the space where it is difficult to store a large number of parts and is difficult to find a replacement when you are thousands of miles away from Earth. On the International space station now has a 3D printer, so if something breaks, engineers can send the project to replace and astronauts in orbit it will print.
Modern printers work only with plastic, so it will likely be used for single instruments or fast moving parts like door handles. But when 3D printers will be able to work with other materials, their use will increase significantly. One day people in space would be able to produce their own food and even biological materials. Processing enterprises can also create parts from the broken parts.
Looking forward, we can assume that 3D printers will be extremely useful when creating colonies. Places such as the Moon, you do not have sufficient quantities of traditional building materials, but the European space Agency has demonstrated that by using solar energy you can create “bricks” of lunar dust that would be a good start. Scientists are now thinking of how to shift this idea to 3D print and build a fully printed house on the moon.
To bring these applications into reality, we need to explore more materials and processes with which production components will withstand the harsh conditions of space. Engineers are also developing an optimized design and are looking for ways to test 3D-printed parts to prove that they are safe and reliable. Particularly, this prevents the gravity, or lack thereof. Many processes today use powders or liquids as raw materials, so we will have to devise cunning tricks to safely work with them in low or no gravity.
Will require completely new materials and technologies. However studies show that three-dimensional printing will be increasingly used in space, even if fully printed spacecraft not fly in the near future. But the time will come.
3D-printed rocket engine heralded a new era of space exploration
Ilya Hel