Russia’s Rosatom-affiliated Troitsk Institute for Innovation and Fusion Research, known as TRINITI, says its scientists have developed a laboratory plasma rocket engine prototype under a national nuclear research program. An institute executive said the technology could shorten future Mars missions, but the proposed journey times remain a claimed capability.
TRINITI said the prototype uses a magnetic plasma accelerator, produces thrust of at least six newtons and operates in a pulsed mode, with average power reaching 300 kilowatts. These specifications are institute claims, rather than independently confirmed performance figures.
In the announcement, acting director general Alexey Voronov said plasma engines could reduce a Mars mission to 30–60 days, adding that a cosmonaut could be sent to Mars and back. His statement did not explain whether that estimate covered a single transit or the complete return mission.
Laboratory development and testing
Voronov described the prototype as a step toward determining whether the engine would be suitable for nuclear-powered space tugs. The announcement described a laboratory device, rather than an operational spacecraft propulsion system.
At the time of the announcement, TRINITI said a test facility was being assembled in Troitsk. Its vacuum chamber measured four metres in diameter and 14 metres in length, with vacuum pumping and heat-removal systems intended to simulate conditions in space.
NASA’s explanation of nuclear electric propulsion describes systems that use reactor-generated electricity to accelerate charged gas propellant. The agency says these systems provide low thrust over extended periods while using propellant more efficiently than chemical rockets.
Research funding and space-sector finances
TRINITI said the engine work was conducted under Russia’s comprehensive program for developing nuclear science and technology. Work under that program became part of the national project New Atomic and Energy Technologies in 2025. The institute’s announcement did not specify a separate budget for the engine.
In a separate proposal for a renewed national space project, Prime Minister Mikhail Mishustin called for approximately 4.4 trillion rubles in federal funding through 2036, including 1.7 trillion rubles over the following six years. Those amounts were proposed allocations for the wider project, rather than reported expenditure on the plasma engine.
Roscosmos first deputy director general Andrey Elchaninov separately put the space industry’s 2023 loss at 13.9 billion rubles. He attributed losses partly to unprofitable contracts signed in 2012–2014 and the withdrawal of foreign partners from projects after Russia’s invasion of Ukraine.
Elchaninov’s account concerns an earlier financial year and Roscosmos, a separate corporation from Rosatom. It does not establish the engine project’s financial position.
The rural infrastructure comparison
A separate infrastructure concern is the reported lack of indoor toilets in a large share of rural Russian homes. Reported interpretations of official household data suggest such a shortfall, but the share has not been independently confirmed.
That comparison raises the issue of spending on advanced research alongside household infrastructure needs. Neither TRINITI’s announcement nor Mishustin’s funding proposal provides rural sanitation spending figures or establishes that propulsion research displaced investment in household services.