Employees of the "Proton-PM" enterprise, which is part of the Roscosmos structure, have completed an important stage in preparing for the serial production of the RD-191 engine for the Angara rocket. The production of a gas duct with a swing unit has been mastered, which supplies fuel to the combustion chamber and controls the thrust vector, ensuring correction of the rocket's movement at the start.
The gas duct is considered one of the most complex components of the engine due to the high labor intensity of production. Its reliability is ensured by a seven-layer bellows with a diameter of 350 millimeters, developed by specialists from NPO Energomash. The bellows compensates for pipeline deformations caused by temperature changes and mechanical loads, which is critical for stable engine operation.
For the production of bellows at "Proton-PM", the press equipment was modernized, adding hydraulic systems, and test methods were developed to check the strength and tightness of large-volume units.
The next stage in preparing for the serial production of the gas duct is qualification tests, which will determine the readiness of the structure for mass production.
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