Why do mortar shells have fins, but not artillery shells?

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Why do mortar shells have fins, but not artillery shells?

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Anonymous 0 Comments

Shells are spin stabilized. They bite I to spiral grooves in the barrel and are spun up when fired. Mortars, since they have to drop down the barrel first to fire, can’t have rifles barrels so use fins. In addition spin stabilisation doesn’t work with large changes in direction, the spin wants to keep it pointed am the same way, a mortar just needs to face the oncoming air stream.

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