Short range anti-aircraft rocket, developed for the Royal Navy
20-barrel 7-inch UP projector on the quarterdeck of the battleship HMS King George V
The Unrotated Projectile (UP) was a British anti-aircraft and ground-bombardment rocket of the Second World War. A 7-inch version was developed for the Royal Navy by Alwyn Crow of the Projectile Development Establishment of the Ministry of Supply at Fort Halstead. It proved unreliable and ineffective and was withdrawn from use in 1941. Development of the concept led to the UP-2 and UP-3, which had diameters of 2-inch and 3-inch respectively but were longer. The latter was used as the basis of the Z Battery anti-aircraft weapons and later developed in air-to-ground form as the RP-3, used against ground forces and shipping by aircraft like the Hawker Typhoon and the Bristol Beaufighter. In 1944–1945 several adaptations for general bombardment were produced, including Sea Mattress, Land Mattress, LILO and Tulip.
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The UnrotatedProjectile (UP) was a British anti-aircraft and ground-bombardment rocket of the Second World War. A 7-inch version was developed for the...
with two more mountings added in 1937. To these were added five unrotatedprojectile (UP) launchers in 1940, each launcher carrying 20 seven-inch (178 mm)...
range, Doppler radar. British tests were then carried out with "unrotatedprojectiles" (the contemporary British term for unguided rockets). However,...
a high-explosive 20.3 cm (8.0 in) shell; the explosion detonated unrotatedprojectile ammunition and started a large fire, which was quickly extinguished...
before World War II, and as 2-and-3-inch-diameter (51 and 76 mm) UnrotatedProjectiles for launching anti-aircraft weapons. Small cordite rocket charges...
rockets were initially used in the anti-aircraft role; the 7-inch UnrotatedProjectile was fired from single pedestal-mounted launchers on warships and...
550 to 600 m/s with a rate of fire of 520 rpm. The FFL of 30 kg fired a projectile at a muzzle velocity of 675 m/s with a rate of fire of 500 rpm. And the...
inch AA gun QF 4.5-inch Mark I to Mark V QF 5.25-inch gun Z Battery UnrotatedProjectile Fast Aerial Mine Holman Projector SBML 2-inch Mortar Ordnance ML...
and around the fort. The work at Halstead resulted in the 7-inch UnrotatedProjectile used on ships of the Royal Navy, and a 3-inch version that was operated...
throwing device AA Mine Discharger, a Japanese anti-aircraft mortar. UnrotatedProjectile, another Royal Navy anti-aircraft weapon. Steam cannon, other steam-powered...
Eugen scored a hit with a high-explosive 20.3 cm shell, detonating unrotatedprojectile ammunition and starting a large fire on Hood, which was quickly extinguished...
instead of conventional guns or mortars. Note that the "Calibre" of rocket projectiles may not refer to the warhead diameter but to the launch tube diameter...
precision Unified Process, a software development process framework Unrotatedprojectile, an anti-aircraft weapon UP (complexity) Up (game theory) Up quark...
Z Batteries was known as the UP-3 (UnrotatedProjectile) and had been developed in the late 1930s by the Projectile Development Establishment at Fort Halstead...
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