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3D printing technology in the field of aerospace use

At the end of September 2014, NASA expects to complete the first imaging telescope, all of which are basically manufactured using 3D printing technology. NASA was therefore the first to try to manufacture the entire instrument using 3D printing technology.
The space telescope is fully functional and its 50.8mm camera allows it to fit into the CubeSat (a micro-satellite). It is understood that the outer tube of this space telescope, the outer bezel and optical frames all as a separate structure directly printed from, only the mirror and the lens has not yet been achieved. The instrument will be in vibration and thermal vacuum testing in 2015.
This 50.8 mm long telescope will all be made of aluminum and titanium, and only 4 parts will be made by 3D printing technology, compared to 5-10 for 3D printing Times In addition, in 3D printed telescopes, the bezel of the instrument used to reduce stray light in the telescope can be angled, something that traditional manufacturing methods can not do in one part.
On August 31, 2014, NASA engineers just completed the 3D printing rocket ejector test. The research is to improve the performance of a certain component of the rocket engine. Due to the mixed reaction of the liquid oxygen and the gaseous hydrogen in the ejector, The combustion temperature here can reach 6000 degrees Fahrenheit, about 3315 degrees Celsius, can produce 20,000 pounds of thrust, about 9 tons, verifying the 3D printing technology in rocket engine manufacturing feasibility. This test is located at NASA's Marshall Space Flight Center in Huntsville, Alabama, where there is complete testing of rocket motors and engineers can verify the performance of 3D printed parts in an ignition environment.
Engineered rocket ejectors require more accurate machining techniques that reduce manufacturing complexity if 3D printing is used. A three-dimensional image of the ejector is created in the computer, printed on metal powder and laser, At high temperatures, the metal powder can be reshaped to the way we want. Rocket engine injectors dozens of injection components, to build components of similar size requires a certain degree of processing accuracy, the technology will be used to test the successful manufacture of RS-25 engines, which serve as NASA's future space launch system The main force, the rocket can carry astronauts beyond near-Earth orbit, into the more distant deep space. Chris Chris, director of engineering at the Marshall Center, believes 3D printing technology is only the first step on a rocket motor injector, and our goal is to test how 3D printing components can revolutionize the design and manufacture of rockets and improve system performance. It is important that you save time and money and are less prone to failure. In this test, two rocket injectors were fired for 5 seconds each time. The complex geometric fluid model created by the designer allowed full mixing of oxygen and hydrogen at 1400 pounds per square inch.
On October 11, 2014, a group of British enthusiasts made a rocket using 3D printing technology and were ready to take off the first rocket to be printed in the world. The team introduced the media to the media at its London office in the local time, the world's first rocket built using 3D printing. Haynes, team leader, said with 3D printing technology, it is not difficult to create a highly complex shape. Even if you want to modify the design prototype, as long as the computer aided design software to make changes, the printer will make a relative adjustment. This is a lot easier than the traditional method of manufacture. Since NASA is already using rocket components using 3D printing technology, the promise of 3D printing is bright.
According to reports, the project called "low-orbit Helium-assisted navigation" project sponsored by a German data analysis company. The rockets were printed weighing 3 kg, the height of the average adult height, is the team spent four years, spent £ 6,000 made. After a grant of £ 15,000 is finalized, they will be launched at the U.S. spaceport in New Mexico by the end of this year. A giant balloon filled with helium will lift the rocket to a height of 20,000 meters, and the global positioning system installed in the rocket will launch a rocket engine that will fire rockets at 1,610 kilometers an hour. After that, the rocket's autopilot system will guide the rocket back to Earth, and the inside camera will shoot the whole process.
NASA's official website reported on April 21, 2015 that NASA engineers are saving money by using additive manufacturing technology to manufacture the first full-size copper alloy rocket engine parts, said the head of NASA's space technology mission. This is a new milestone in the application of 3D printing technology in aerospace.
June 22, 2015 It is reported that a state-owned enterprise of Russian technology group manufactures a drone prototype with a weight of 3.8 kg and a wingspan of 2.4 meters with a flying speed of 90 to 100 kilometers and an endurance of 1 to 1.5 hour.
Company spokesman Vladimir Kutakhov introduced the company with two and a half months to achieve a leap from concept to the prototype, the actual production time-consuming only 31 hours, the manufacturing cost of less than 200,000 rubles (about 3700 US dollars ).
April 19, 2016, Chinese Academy of Sciences Chongqing Institute of Green Intelligent Technology 3D Printing Technology Research Center
It was announced that after more than two years of hard work by the CAS and the CAS CAS Space Application Center and the parabolic weightlessness flight test in Bordeaux, France, the first in-orbit 3D printer in China was announced. This 3D printer can print up to 200 × 130mm parts size, it can help astronauts to make the necessary parts in weightlessness environment, significantly improve the flexibility of space station experiments, reduce the types and quantities of space station spare parts and operating costs, Reduce the station's dependence on ground supplies.