MOSCOW (Roscosmos PR) — The Progress Rocket and Space Center (Samara, part of the Roscosmos State Corporation) has completed a series of static tests of the fuel tanks of the first stage of the promising Soyuz-5 launch vehicle. During the tests of prototypes of the oxidizer tank, the declared strength and rigidity of the structural elements were confirmed.
For this purpose, the design of one of the two prototypes of the oxidizer tank was brought to failure by the internal test pressure. The test result confirmed the correctness of all design solutions for the development of the upper and lower bottoms of the tank and their docking to the hull. The next stage of work will be dynamic vibration strength tests, which will be held at the Central Scientific Research Institute of Mechanical Engineering (TsNIIMash, part of the State Corporation Roscosmos) in the city of Korolev, Moscow Region.
For the first time, tanks for the Soyuz-5 launch vehicle will be made of the new 1580 aluminum alloy. The use of this material with increased strength properties allows increasing the payload mass by several hundred kilograms.
In the production of the Soyuz-5 rocket, a new technology for domestic rocketry will be used – friction stir welding. The equipment for robotic friction stir welding is developed and manufactured by CJSC Cheboksary Enterprise Sespel.
In 2019, the Industrial Development Fund provided RCC Progress with a concessional loan under the special Conversion program. The funds were used to create unique equipment for the production of the Soyuz-5 rocket.
The Soyuz-5 launch vehicle is a Russian two-stage medium-class launch vehicle with increased payload capacity (the mass of the payload launched into low-earth orbit is 17 tons) is being developed and manufactured at the Progress RCC in the city of Samara. The chief designer of the Soyuz-5 space rocket complex has been appointed General Director of the enterprise Dmitry Baranov, the chief designer of the Soyuz-5 launch vehicle is Alexander Cherevan.
The Soyuz-5 rocket will use unique liquid-propellant rocket engines: at the first stage, the RD-171MV engine developed by the Energomash Research and Production Association named after Academician V.P. Glushko (part of Roskosmos), at the second stage – RD-0124MS developed by the Chemical Automation Design Bureau (part of Roskosmos). RD-171MV is the most powerful liquid-propellant rocket engine in the world (thrust – 740 tons), RD-0124MS has a record specific impulse (361 s).
As part of the new launch vehicle, a control system created on a domestic element base will be used. Responsible for its development is a subsidiary of the RCC “Progress” – Scientific and Production Association of Automation named after Academician N.A. Semikhatova (Yekaterinburg, part of Roscosmos). The use of the new control system will simplify the process of preparing the Soyuz-5 rocket for launch at the cosmodrome and minimize the composition of ground equipment at the launch site.