The Hydra 70 rocket is a 2.75-inch (70 mm) diameter fin-stabilized unguided rocket used primarily in the air-to-ground role. It can be equipped with a variety of warheads, and in more recent versions, guidance systems for point attacks. The Hydra is widely used by US and allied forces, competing with the Canadian CRV7, with which it is physically interchangeable.
Four dummy (inert) Hydra 70 rockets next to an AGM-114 Hellfire
Hydra 70 rockets on an AH-1 Cobra helicopter
Dummy Hydra 70s in an M261 launcher on a Dutch AH-64 Apache. The tips of some of the rockets are white (and the rockets are shorter in length, and they are attached to the launcher via umbilical connectors) because they have a different type of warhead and fuze.
In military terminology, a rocket is a self-propelled, unguided or guided, weapon-system powered by a rocket engine. Though used primarily as medium- and long-range artillery systems, historically rockets have also seen considerable use as air-to-surface weapons, some use as air-to-air weapons, and even as surface-to-air devices. Examples of modern surface-to-surface rocket systems include the Soviet BM-27 Uragan and the American M270 Multiple Launch Rocket System.
Katyusha rocket launcher, one of the earliest modern rocket-artillery weapons
An Edo period wood block print showing samurai gunners firing bo-hiya with hiya-zutsu (fire arrow guns).
M270 MLRS
German Army Panzerfaust 3.
