airworthy synchropter. Flettner Fl 282 "Kolibri" (Hummingbird) – a reconnaissance "synchropter" helicopter. Focke-Achgelis Fa 223 "Drache" (Dragon) – an anti-submarine, search and rescue, reconnaissance, and freight helicopter, based on the prewar Fw 61. Bombs and explosives German nuclear weapons program Fritz X, a guided anti-ship glide bomb, the world's first precision guided weapon ever deployed in combat. Artillery Karl-Gerät, the largest calibre (up to 60 cm), self-propelled mortar ever deployed – seven examples built, six seeing combat 1941–45. Schwerer Gustav (Heavy Gustav) – an 800mm railway gun, the largest artillery piece ever used in warfare. V-3 cannon "Hochdruckpumpe" – "High Pressure Pump", a large-calibre gun. Landkreuzer P. 1500 "Monster" – a proposed super-heavy self-propelled gun, weighing 1500 metric tons and armed with the 800mm Schwerer Gustav/Dora gun. Missiles Aggregat series A1 – the first German liquid-propellant experimental rocket. A2 – an experimental rocket, gyroscopically stabilized. A3 – an experimental rocket with an inertial guidance system. A4/V-2 – the first ballistic missile and the first human-made object to achieve sub-orbital spaceflight. A4-SLBM – a planned submarine-launched ballistic missile. A4b/A9 – winged, long-range version of the A4, first winged rocket to break the sound barrier. A5 – an experimental reusable rocket. A6 – planned version of the A5 with different propellants; may have also been a proposal for a manned reconnaissance version of the A4b/A9. A7 – winged rocket, never completed. A8 – proposed stretched version of the A4 to use storable propellants. A9/A10 Amerika Rakete – a planned intermediate-range ballistic missile to be used to strike the eastern United States. A11 Japan Rakete – proposed three-stage rocket. A12 – planned four-stage orbital launch rocket, capable of putting 10 metric tons into low Earth orbit. Fieseler Fi 103R Reichenberg – a manned "suicide attack" cruise missile. Enzian – a planned surface-to-air missile with infrared guidance. Feuerlilie F-25 "Fire Lilly" – a surface-to-air missile. Feuerlilie F-55 "Fire Lilly" – a two-stage, supersonic surface-to-air missile. V-1 flying bomb/Fieseler Fi 103/Vergeltungswaffe 1 – the first cruise missile. Fliegerfaust "Pilot Fist" or "Plane Fist" / Luftfaust "Air Fist" – the first man-portable air-defense system (MANPADS) anti-aircraft weapons system. Fritz X – an unpowered air-launched, MCLOS-guided anti-ship missile using the FuG 203/230 Kehl-Straßurg control system, the pioneering wartime example of a gravity-type PGM, used from September 1943 through 1944. Henschel Hs 117 Schmetterling "Butterfly" – a manually guided surface-to-air missile. Henschel Hs 117H – a manually guided