V-1 flying bomb

V-1 flying bomb Fieseler Fi 103 Flakzielgerät 76 (FZG-76)
Type	Cruise missile
Place of origin	Nazi Germany
Service history
In service	1944–1945
Used by	Luftwaffe
Wars	World War II
Production history
Designer	Robert Lusser
Manufacturer	Fieseler
Unit cost	5,090 RM[1]
Specifications
Mass	2,150 kg (4,740 lb)
Length	8.32 m (27.3 ft)
Width	5.37 m (17.6 ft)
Height	1.42 m (4 ft 8 in)
Warhead	Amatol-39, later Trialen
Warhead weight	850 kg (1,870 lb)
Detonation mechanism	Electrical impact fuze Backup mechanical impact fuze Time fuze to prevent examination of duds
Engine	Argus As 109-014 Pulsejet
Operational range	250 km (160 mi)[2]
Maximum speed	640 km/h (400 mph) flying between 600 and 900 m (2,000 and 3,000 ft)
Guidance system	Gyrocompass based autopilot

The V-1 flying bomb (German: Vergeltungswaffe 1 "Vengeance Weapon 1"^[a]) was an early cruise missile. Its official Reich Aviation Ministry (RLM) designation was Fieseler Fi 103^[3] and its suggestive name was Höllenhund (hellhound). It was also known to the Allies as the buzz bomb or doodlebug^[4][b] and in Germany as Kirschkern (cherry stone)^[c] or Maikäfer (maybug).^[d]

The V-1 was the first of the Vergeltungswaffen (V-weapons) deployed for the terror bombing of London. It was developed at Peenemünde Army Research Center in 1939 by the Luftwaffe at the beginning of the Second World War, and during initial development was known by the codename "Cherry Stone". Due to its limited range, the thousands of V-1 missiles launched into England were fired from launch facilities along the French (Pas-de-Calais) and Dutch coasts or by modified He 111 aircraft.

The Wehrmacht first launched the V-1s against London on 13 June 1944,^[6] one week after (and prompted by) the successful Allied landings in France. At peak, more than one hundred V-1s a day were fired at southeast England, 9,521 in total, decreasing in number as sites were overrun until October 1944, when the last V-1 site in range of Britain was overrun by Allied forces. After this, the Germans directed V-1s at the port of Antwerp and at other targets in Belgium, launching a further 2,448 V-1s. The attacks stopped only a month before the war in Europe ended, when the last launch site in the Low Countries was overrun on 29 March 1945.

As part of operations against the V-1, the British operated an arrangement of air defences, including anti-aircraft guns, barrage balloons, and fighter aircraft, to intercept the bombs before they reached their targets, while the launch sites and underground storage depots became targets for Allied attacks including strategic bombing.^[7]

In 1944, a number of tests of this weapon were apparently conducted in Tornio, Finland. On one occasion, several Finnish soldiers saw a German plane launch what they described as a bomb shaped like a small, winged aircraft. The flight and impact of another prototype was seen by Finnish frontline soldiers; they noted that its engine stopped suddenly, causing the V-1 to descend sharply, and explode on impact, leaving a crater 20–30 metres (66–98 ft) wide. These V-1s became known to Finnish soldiers as "flying torpedoes".^[8]

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