Olga Ozhogina is a Ukrainian aerial novelist, novelist and photographer. He submitted this article to Space.com Special Voices: Op-Ed & Insights through the press center at Promin Aerospace, a Ukrainian rocket launcher.
even though current events in Ukraine, Ukrainian companies continue to create and develop advanced technologies. Promin Aerospace is one such industry that overcomes the challenges of normal life.
Promin Aerospace confirmed his idea in recent months of a stand -alone fire rocket, an idea about autophagic, or “self -destructive” technology. The company previously performed the first three experiments on the engine for its start -up car concept, which was allowed to improve the design and test the capability of the central concept.
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Promin Aerospace and CTO Vitaly Yemets founded the foundation of the company’s autophagic technology, which incorporates a hull into a solid fuel smelter for a single -stage rocket. The rocket either destroys itself or “destroys itself” very close during the flight, without leaving debris in the open. In addition, the rocket is more efficient as it climbs, depletes itself and decreases in size.
The development of the autophagic engine was the first step in building a full-fledged launcher that took into account the risks of total debris and the re-entry of the rocket-part. These problems are growing as more and more rocket companies operate. Promin Aerospace’s engineers are conducting further engineering experiments to improve the design and begin work on the next level of autophagic rocket concept.
“Thanks to this set of experiments, we found out what can work better in the design of the machine and the nozzle,” says Yemets. “As a result, we increased the speed of gasification with a new gasifier printed on a 3D print, verifying the efficiency of the new oxidizer and eliminating burnouts.”
These improvements could not have been made to the engineer if the engineers had not met the internal problems at each stage of the test; These challenges have made it clear that it is necessary to improve or change the building design. Below is a summary of each technical experiment performed before the war.
The first test: an aerospike nozzle and a new smelter
During the most recent experiment, experiments were performed on a new gasifier where the solid fuel rod was converted to gas and fed to the engine. This gasifier was built using 3D printing.
The new gasifier increased the rate of conversion of the polymer to gas two to three times compared to previous experiments performed with gasifiers made with traditional technologies. This was achieved due to the increase in the area of gasification, the hard surface obtained by laser printing.
The experiment lasted about 152 seconds. The gas fuel was used for starting, and then the solid fuel was fed to the gasifier using a test drive. The feeding rate is 6 to 8 millimeters per second.
The engineers also made their first test of an aerospike nozzle, whose central body is in the form of a cone cut into. The first experiment gave a surprising result – prolonging the solid phase.
However, 93 seconds into the experiment, fire was detected in the combustion chamber. The fire was extinguished due to lack of awareness with a recent replacement of the gasifier and aerospike nozzle. Engineers have already developed new techniques to control engine temperatures that will allow for future testing.
The second test: a conversion machine
The next experiment was done by the engineers to try to change the engine. Now they have put in place a number of heat detectors in many combustion engines, as has been done in previous fire tests. understanding the details of the heat flow during the experiment. In addition, an understanding of the hot stage of the current transition provides an important insight into the actual processes that take place in the steel industry.
The propellant rod is fed into the gasifier, and the flame retardants are sealed with multiple sensors. The burning of the solid propellant rod, which is the coaxial parts of the solvent and polymer as fuel, was carried out. The fire was stable for about 50 seconds, with a feed rate of 1 millimeter per second.
Thankfully, the opening and inspection after the test revealed some unexpected details. There was a small explosive device that was not protected during the firing, although it did not cause the attempt to end.
In later experiments, the starting gas was replaced with a safer compound to prevent this.
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The third experiment: a new oxidizer and a bell -type nozzle
Promin Aerospace engineers tried working with a new solvent for the third experiment in advanced engineering. Combined, a different type of bell nozzle is installed and used. As with the previous experiment, several researchers were looking at the heat in several engine areas to understand the flow of heat during the experiment and to help prevent it. to the fire, and pressure measurements in the fire chamber and the pneumatic cylinder.
After the first experiments, the engineers fed the propellant rod into the gasifier while holding the shotguns with multiple sensors. There is no problem to implement the resulting fire with the new oxidizer. Compared to the first experiment (which remained stable for almost 50 seconds, with a feed rate of 1 mm / s), the firing process was more stable; the experiment was held for 268 seconds at a rate of 7 mm / s.
The experiment ran for 277 seconds, with a warm -up stage. However, in 268 seconds, the unstoppable explosion was completed. After removal, the cones of the gasifier were found to be exhausted, which could cause the oxidizer to become very hot. Up until that point in the experiment, the pressure and performance of the fuel had remained stable, indicating that the new oxidizer was very effective.
For the next test, a power gasifier will be used to ensure that the oxidizer is not hot. In addition, appropriate heat detectors shall be used, and a fuel-oxidizer shield must be designed to prevent damage to the engine in an explosive environment. Overall, when combined with the 3D printing gasifier, the oxidizer worked well – greatly increasing efficiency.
With the completion of all tests on the engine, Promin Aerospace plans to hold a suborbital test this November and a commercial suborbital launch in early 2023. Promin Aerospace expects to start work on the orbital release after completion of suborbital experiments.
Promin Aerospace is located in Kyiv and Dnipro. Although Russia increased its offensive in February, Promin Aerospace was able to continue to develop his autophagic rocket concept Even though his workers were fighting for defense.
“It is very important for companies with high -tech developments to continue their work during the war,” said Volodymyr Taftay, head of the State Space Agency of Ukraine. “They are the future of our country and support its economic future.”
Promin Aerospace was founded by Vitaliy Yemets a Misha ʻO Rudominski to 2021. It provides state -of -the -art technology for making start -up cars. This technology provides customized emissions for every business, reducing their cost and preparation time while leaving no trash.
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