3D the printing component of the rocket NASA motor showed record draft (+ to video)
Earlier this month NASA declared the completion of test for fire resistance of an injector for the rocket motor made by means of additive production. They say that development can lead to more operating production of rocket cursors. On Tuesday of NASA presented bigger 3D a printing component of the rocket motor, in the course of test last week the record indicator of draft in 9,07 kg was fixed.
This test is a printsipny mark for many printsipny achievements to which aspires to reduce on purpose agency cost of the space equipment, according to space agency.
The injector delivers fuel for a food of the motor and provides the draft suitable for start of the rocket in space. During injector test through it passed liquid oxygen and gaseous hydrogen in the combustion chamber, thus, it was possible to develop draft in 10 times in comparison with last 3D printing injectors which ever made. The component is made by means of a specific form 3D of the press: selective laser melting. Scientific NASA used design of an available injector, changed it so that it was possible 3D to print an injector.
The method of selective laser melting allowed to spread a layer behind a layer a powder (a nickel and chrome alloy) to receive the difficult injector consisting of 28 parts of channels and smeshivatel of fuel. On the size the detail was identical to the injectors, the malekhanky rocket cursors which were used for a food, for example, a cursor of RS-25 which will be established System of Space launch of NASA rockets for travel of people to the deepest space with missions on asteroids and Mars.
One of the main circumstances of reduction of price of rocket details is quantity minimization a component. This injector consisted from only 2 component while similar injectors which passed tests, consisted of 115 details. The smaller quantity of details means that they are simpler for collecting, it in turn will lead to that complex 3D printing details will promote essentially to reduce prime cost.
«We used design of an available injector which we tested earlier, and changed it so that it was possible 3D to print an injector», – Brad Bullard, the designer of cursors responsible for development of an injector explained. It should be noted that tests were carried out under the pressure of 1 400,00 pounds on square inch in vacuum and actually at 6000 degrees by Fahrenheit.
«This technology it is possible to use to all SLS to cursors, or components of rockets which made earlier the personal companies». – Greg Barnett, the leading engineer of the project said.
Injector the Directed Manufacturing company in Austin made, the State of Texas, but the design of an injector belongs to NASA. NASA will provide access to data on test and materials to the American companies through the Materials and Processes Information System database which the Marshall laboratory operates.