Editorial. Sergey A. Khudyakov: Pioneer of Hydrogen Space Energy and Custodian of Engineering Heritage

Abstract

This article is dedicated to the 90th anniversary of Sergey Andreevich Khudyakov, a prominent engineer, scientist, and mentor whose pioneering contributions shaped the development of hydrogen-based energy systems for space applications and influenced the broader field of sustainable energy. The paper provides a comprehensive account of Khudyakov’s professional trajectory, highlighting his role in the design and implementation of nuclear and hydrogen power units for spacecraft, including the development of fuel cell technologies tested under microgravity conditions and later applied to the «Buran» program.
Beyond his technical achievements, Khudyakov’s work exemplifies the integration of advanced energy concepts into civil industry, particularly in the automotive sector, where hydrogen technologies were adapted for environmentally friendly transport solutions. His scientific vision extended to the paradoxical notion that exhaust gases from thermal power plants could serve as fuel in reverse cycles, thereby challenging conventional combustion theory and opening new pathways for direct conversion of matter into electricity.
The article also emphasizes Khudyakov’s enduring role as a custodian of engineering heritage. His publications on Vasily Grabin and the masters of artillery and rocket-space engineering have become seminal works, bridging the historical continuum from artillery to astronautics and reinforcing the cultural identity of Russian engineering. His extensive teaching and lecturing activities at leading universities and research institutions, combined with active participation in international congresses on alternative energy and ecology, underscore his influence as both a scientist and educator.
By situating Khudyakov’s contributions within the broader context of energy innovation, historical continuity, and pedagogical legacy, the article demonstrates his significance as a figure who unites past achievements with future aspirations. His work not only enriches the scientific discourse on hydrogen energy and plasma-catalytic systems but also inspires new generations of researchers to pursue sustainable and transformative solutions in energy and technology.