The Unrotated Projectile (UP) was a British anti-aircraft and ground-bombardment rocket of the Second World War. The original 7-inch version was developed...

7 mm) in compensation. A small conning tower was added aft, and four Unrotated Projectile mounts were added to supplement the six octuple-barrel 2-pounder...

cordite-powered surface-to-air rockets. Several models of these Unrotated Projectile (UPs) were introduced, starting with a 7 inches (180 mm) diameter...

(missile family) Starburst surface-to-air missile Holman Projector Unrotated Projectile Z battery (2 inch rocket battery) AIM-9X Sidewinder RIM-2 Terrier...

before World War II, and as 2-and-3-inch-diameter (51 and 76 mm) Unrotated Projectiles for launching anti-aircraft weapons. Small cordite rocket charges...

with two more mountings added in 1937. To these were added five unrotated projectile (UP) launchers in 1940, each launcher carrying 20 seven-inch (178 mm)...

destroyers and corvettes to supplement the depth charges. As the mortar projectiles employed contact fuzes rather than time or bathymetric (depth) fuzes...

a high-explosive 20.3 cm (8.0 in) shell; the explosion detonated unrotated projectile ammunition and started a large fire, which was quickly extinguished...

throwing device AA Mine Discharger, a Japanese anti-aircraft mortar. Unrotated Projectile, another Royal Navy anti-aircraft weapon. Steam cannon, other steam-powered...

rockets were initially used in the anti-aircraft role; the 7-inch Unrotated Projectile was fired from single pedestal-mounted launchers on warships and...

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...

range, Doppler radar. British tests were then carried out with "unrotated projectiles" (the contemporary British term for unguided rockets). However,...

seems only to have been used with British anti-aircraft artillery 'unrotated projectiles' (rockets) in World War II. Radar proximity fuzes were a big improvement...

precision Unified Process, a software development process framework Unrotated projectile, an anti-aircraft weapon UP (complexity) Up (game theory) Up quark...

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...

to scatter the projectiles. The barrels were mounted in a frame that could be rotated through 90 degrees for loading. The projectiles weighed 390 pounds...

Bulletin, March 1945) HyperWar: Handbook on Japanese Military Forces Unrotated projectile a British rocket launched parachute aerial mine system for ship defence...

and around the fort. The work at Halstead resulted in the 7-inch Unrotated Projectile used on ships of the Royal Navy, and a 3-inch version that was operated...

through Destroyers-for-bases deal 3-inch/23-calibre Holman Projector Unrotated Projectile 18-inch torpedoes Mk VIII-XVII 21-inch torpedo Mk II-XI 24.5-inch...

accommodation in lieu for service as commodore. Aurora received an unrotated projectile (UP) mounting and eight QF 2-pounder Mark VIII in two quadruple mountings...

V QF 3-inch 20 cwt QF 4-inch Mk XII & XXII Anti-aircraft weapons Unrotated projectile Holman Projector 20 mm Oerlikon QF 2-pounder "pom-pom" Mk VIII 40...

two Mark VI pom-pom mounts. In 1940, to combat air attack, four Unrotated Projectile mountings were fitted, on "B" turret, two on "Y" turret, one replaced...

replace the Bofors, because the "VT" proximity fuse would not fit a 40mm projectile, and the 40 mm weapon was considered inadequate against the emerging anti-ship...

inch AA gun QF 4.5-inch Mark I to Mark V QF 5.25-inch gun Z Battery Unrotated Projectile, including "fast aerial mine" Holman Projector SBML 2-inch Mortar...

guidance would be required for precision. However, rockets, or "Unrotated Projectiles" as they were called, could be used for anti-aircraft barrages....

the start of the war, the British had equipped their warships with unrotated projectile unguided anti-aircraft rockets, and by 1940, the Germans had developed...

Z Batteries was known as the UP-3 (Unrotated Projectile) and had been developed in the late 1930s by the Projectile Development Establishment at Fort Halstead...

V QF 3-inch 20 cwt QF 4-inch Mk XII & XXII Anti-aircraft weapons Unrotated projectile Holman Projector 20 mm Oerlikon QF 2-pounder "pom-pom" Mk VIII 40...

a tank gun, although they both fired 2 lb (0.91 kg), 40 mm (1.6 in) projectiles. The first gun to be called a pom-pom was the 37 mm Nordenfelt-Maxim...

Nelson in the Firth of Forth, September 1940; the Unrotated Projectile mounts are visible on the roofs of two of her main-gun turrets...