On Mon, Jun 29, 2015 at 09:50:02AM -0500, Grimmund wrote: > I am not sure that spinning it will stabilize it in a vacuum. I was > under the impression it acted in concert with air drag. IDK, though. A rigid spinning object in vacuum does maintain the direction of its spin axis. Drag does also interact with spin in atmosphere, but not in a simple manner and not always with the effect of maintaining stability. > Hmmm. Passive sensor, micro thrusters, and guidance package in the > space occupided by the sabot collar? We may as well put a thruster in it and call it a missile. They can usually achieve vastly greater speeds in Traveller than any gun could launch them with -- mostly because they're accelerating through a million times greater distance. - Tim