China3D printingNet October 2nd, Indian aerospace technology start-up Skyroot Aerospace launched a full3D printingCryogenic engine, designed to refuel the upper fuel of a rocket. This rocket engine, called Dhawan-1, is considered to be India’s first privately-developed local cryogenic rocket engine running on propellants such as liquid natural gas (LNG) and liquid oxygen (LoX).
This announcement coincides with the centenary of the birth of Indian rocket scientist Satish Dhawan. Dhawan is widely regarded as the father of the Indian Space Research Program (ISRO), who led this emerging space program during the difficult decade of the 1970s and laid the foundation for the country’s robust space research.In recognition of this famous engineer, Skyroot Aerospace used its3D printingThe engine is designed under its own name.
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Skyroot Aerospace has launched a full-scale Dhawan-13D printingCryogenic rocket engine. Image courtesy of Skyroot Aerospace.
This Hyderabad-based startup was established in 2018 by a former colleague of ISRO. It is the country’s first private company to manufacture a small satellite launch vehicle and promises to send it into space within a week of contacting customers. In the past, Pawan Kumar Chandana, the co-founder and CEO of ISRO systems engineer, said that he hopes India will promote private sector participation in space activities under the authorization and supervision of the government. He believes that in this way, the country will be able to break into a market that is expected to grow exponentially, and is expected to launch more than 7,000 satellites in the next ten years. Like other space visionaries, the space-based aerospace team is preparing to develop technology to enter space responsively, reliably, and economically. Part of its mission is to make conventional, reliable and affordable spaceflight possible.
Last year, the company tested the subsystem as it plans to commercialize the first batch of rockets before the end of 2021. Skyroot Aerospace successfully conducted a test in Lahm,DavanIt is the advanced rocket engine of its Vikram-1 launch vehicle. July 2020.Equipped3D printingThe injector’s engine can be restarted multiple times, which will allow the Vikram-1 rocket to put satellites into multiple orbits in a single mission. However, the Dhawan-1 cryogenic engine is expected to be of greater significance to the company, mainly due to the extreme complexity of the technology and the use of propellants.
Skyroot Aerospace also revealed that its senior vice president Vasudevan Gnanagandhi is both ISRO’s mechanical engineer and the pioneer of cryogenic rocket science in India. He will be responsible for leading the design and development of cryogenic propulsion of liquid engines for small satellite launch vehicles.
Successfully test-fired the Vikram-1 carrier rocket of Skyroot AerospaceDavanAdvanced engine. Image courtesy of Skyroot Aerospace.
According to China3D printingThe network understands that compared with solid and liquid propellant rocket stages that can store the earth, cryogenic engines are more efficient and provide more thrust per kilogram of propellant burned, giving it a significant payload advantage. Specifically, the engine uses liquid fuel and an oxidizer that is kept at extremely low temperatures.
In addition, Indian news media YouStory reported: “Liquefied natural gas is a clean-burning, low-cost, highly reusable and safe cryogenic fuel. It is also an ideal choice for long-term deep-space missions carrying artificial satellites or humans.” The processing technology is more attractive.
But cryogenic engine technology is nothing new: the world’s first rocket engine powered by cryogenic fuel, a derivative of the National Aeronautics and Space Administration (NASA), is still the most used advanced rocket in the United States for more than 50 years since its birth. engine. The RL10 rocket engine flew successfully for the first time in 1963 and is critical to NASA’s space exploration, and has put hundreds of commercial and military payloads into orbit. In addition, NASA pointed out that only a few countries/regions have the technology pioneered in this plan that can provide rocket power for liquid hydrogen and oxygen. RL10 has now become a part of Aerojet Rocketdyne, and was successfully developed in 2016 with3D printingThe RL10 engine with the core main fuel injector cuts the cost of parts and production time by half.
At present, the start-up company has completed tests to check the fuel flow and structural integrity of the engine, and is currently building a special test facility to conduct Dhawan-I “ignition” tests. The company has successfully tested the most advanced engine of its first rocket, Vikram-I, but is still manufacturing the initial engine of Vikram-I. If all goes well, Skyroot Aerospace will look forward to launching Vikram-I for the first time in December 2021 with the support and guidance of ISRO. Nevertheless, the cryogenic engine will not be part of Vikram-I, but will be designed for the company’s larger rocket, Vikram-II.
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