Russia tests ÒinvincibleÓ cruise missile President Vladimir Putin says Russia has successfully tested its nuclear-powered Burevestnik missile, which Moscow claims can pierce any defence shield, and will move towards deploying the weapon Oct 26: RussiaÕs top general, Valery Gerasimov, tells Putin that missile travelled 14,000km and was airborne for about 15 hours when it was tested on Oct 21 Moscow says Burevestnik is invincible to current and future missile defences, with almost unlimited range and unpredictable flight path RUSSIA Moscow Pankovo test site Novaya Zemlya Barents Sea Kara Sea 800km 500 miles 9M730 BUREVESTNIK (NATO name SSC-X-9 Skyfall) Missile length (in flight) 9 metres Speed Subsonic Flight altitude 50-100m Notional range 20,000km Angular design minimises radar signature Conventional or nuclear warhead Missile powered by miniature nuclear reactor, theoretically enabling it to stay aloft for days Guidance system Swept wings Nuclear-powered propulsion system: Activates after missile reaches sufficient speed following launch assisted by rocket booster 1 Inlet: Air drawn into engine by turbine is compressed 2 Reactor: Powers electric motor that drives turbine 3 Exhaust: Superheated and possibly radioactive air generates forward thrust 1 2 3 Missile body Compressor Turbine Airflow over reactor prevents it from overheating Sources: IISS, Reuters, Stratfor © GRAPHIC NEWS