Researchers have determined that Russia’s nuclear-powered cruise missile, known as Skyfall or 9M730 Burevestnik, almost certainly employs a direct-cycle engine design that spews radioactive material throughout its entire flight path. The finding, reported by The War Zone, clarifies how the weapon functions and underscores its potential environmental and strategic hazards.
The engine's design poses a unique deterrence dilemma. Unlike conventional cruise missiles, Skyfall could theoretically remain airborne for days, enabling it to loiter and evade defenses. However, the constant release of radioactive particles means the missile effectively becomes a mobile contamination source, complicating any operational use.
NATO and allied intelligence agencies have long tracked the Burevestnik program, which Russian President Vladimir Putin unveiled in 2018 as part of a new generation of strategic weapons. The direct-cycle engine finding solidifies concerns that even a non-nuclear warhead strike could cause radiological dispersal, blurring the line between conventional and nuclear conflict.
Budget and procurement details remain scarce, though Russia has periodically reported flight tests from the Pankovo test site on Novaya Zemlya. The missile has experienced several documented failures, including a 2019 explosion that killed five engineers and briefly raised radiation levels in a nearby village.
The analysis relies heavily on open-source intelligence and declassified U.S. government assessments, with no independent on-site verification possible. Analysts caution that while the engine concept is clear, the missile's operational readiness and reliability remain unproven. A counter argument holds that Russia may never field the weapon operationally, viewing it primarily as a bargaining chip for arms control negotiations.