RP-3
The RP-3 (from Rocket Projectile 3 inch) was a British air-to-ground rocket projectile introduced during the Second World War. The "3 inch" designation referred to the nominal diameter of the rocket motor tube.
The RP-3 (from Rocket Projectile 3 inch) was a British air-to-ground rocket projectile introduced during the Second World War. The "3 inch" designation referred to the nominal diameter of the rocket motor tube.
The RP-3 (from Rocket Projectile 3 inch) was a British air-to-ground rocket projectile introduced during the Second World War. The "3 inch" designation referred to the nominal diameter of the rocket motor tube.
Source: Wikipedia "RP-3" · CC BY-SA 4.0
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