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The Henschel Hs 298 was a 1940s German rocket-powered air-to-air missile designed by Professor Herbert Wagner of Henschel.
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Design and development
The Hs 298 was designed specifically to attack allied bomber aircraft and was the first missile designed specifically for air-to-air use. It was to be carried on special launch rails by Dornier Do 217s (five missiles) or Focke-Wulf Fw 190s (two missiles) and carried 48 kg (106 lb) of explosive.
The Hs 298 was a mid-wing monoplane with tapered swept back wings and it had a single horizontal stabiliser with twin vertical fins. It was powered by a Henschel-designed rocket motor built by Schmidding as the 109–543; it had two stages, the first high velocity stage was designed to leave the launch aircraft at 938 km/h (585 mph), in the second stage the speed was brought back to 682 km/h (425 mph) to give a maximum range of about 1.5 km (0.93 mi). It used a Strassburg-Kehl FuG 203 radio guidance system powered by a propeller-driven (mounted on the nose) electric generator. The missile needed two crew on the launch aircraft to control it, one operator used a reflector-type sight to aim at the target and the other flew the missile using a joystick and another sight paired to the first with a servo system.
The only known test firings were carried out on 22 December 1944 with three missiles carried by a Junkers Ju-88G. Only two missiles left the launch rails with one failing to release, of the two released one exploded prematurely and nose-dived into the ground. It was planned to enter mass production in January 1945 but the project was abandoned in favour of the X-4.
Survivors
One Hs 298 is on display at the Royal Air Force Museum Cosford. One Hs 298 is on display at the Smithsonian National Air and Space Museum Steven F. Udvar-Hazy Center.