The Ruhrstahl Ru 344 X-4 or Ruhrstahl-Kramer RK 344 was a wire-guided air-to-air missile designed by Germany during World War II. The X-4 did not see...

gang Northrop X-4 Bantam, an early jet age research aircraft A common name for petroleum ether A four-lane PCI Express slot Ruhrstahl X-4, a German World...

Ruhrstahl X-7 "Rotkäppchen" (‹See Tfd›German: Rotkäppchen, lit. 'Little Red Riding Hood') also known as Kramer X-7 or Ruhrstahl-Kramer RK 347 was a German...

worked for the Ruhrstahl AG steel and armaments corporation. He was responsible for the construction of the Fritz X and the Ruhrstahl X-4 missiles (1943-1945)...

in combat. Fritz X was a nickname used both by Allied and Luftwaffe personnel. Alternative names include Ruhrstahl SD 1400 X, Kramer X-1, PC 1400X or FX...

canopy, and to be armed with two or four 30 mm (1.2 in) MK 108 cannons, Ruhrstahl X-4 air-to-air missiles, or both. By the time an American infantry unit...

never used operationally: Ruhrstahl X-4 (actively wire-guided; anti-tank variants of this were also designed, such as the X-7) Anti-ship missiles were...

Rheintochter "Rhinedaughter" – a manually guided surface-to-air missile. Ruhrstahl X-4 – a wire-guided liquid-fueled air-to-air missile intended to be usable...

fuselage, possibly allowing for other armament packages such as the Ruhrstahl X-4 wire-guided missile. Multhopp's team also seriously explored a second...

prototypes such as the Ruhrstahl X-4. The US Navy and US Air Force began equipping guided missiles in 1956, deploying the USAF's AIM-4 Falcon and the USN's...