[ryan71]

This is a cool idea, but I would not use it for satellites. Satellites are fragile pieces of equipment.

This is a gun. It would be more practical to design projectiles that could be launched into space and put into orbit until needed. During wartime, a target can be identified and the projectile directed to reenter the atmosphere, glide, and use GPS or a laser designator to impact the target.

You could put countless shells into space to be used when needed. No more waiting on Bombers or clearing foreign airspace.

Size? Big, small, even clusters. Warhead? Conventional HE, maybe no warhead, maybe just a kinetic force like our concrete bombs.

[kittycatonline.com]

This is a gun. It would be more practical to design projectiles that could be launched into space and put into orbit until needed.

Exactly. It's a vastly overdesigned, overpriced gun. Saddam's 'supergun' would have done the same thing at probably 1% of the cost. Gerald Bull, the designer of the supergun, had wanted to do just this; build a cannon for sattelite launch.

If the specs for the sattelite call for it to handle 1300g, blasting it out of a big ol' cannon would be entirely reasonable.