I love the idea, either as a fusion drive or annihilation drive, but the world had better be damned peaceful before we start making that kind of thing. As Larry Niven explored several times, such a drive is also a weapon of mass destruction on a potentially global scale. It’s the ultimate dual use tech, because it’s effectiveness as a drive is directly proportional to its effectiveness as a weapon. Whether in the form of “The Kzinti Lesson” or a smalle scale like what’s found in The Ethics of Madness we’re talking about something serious. The only difference between peaceful use and militaristic use is just where and how you aim the exhaust.
Thst without worrying about someone turning a ship into an R-Bomb!
Thst without worrying about someone turning a ship into an R-Bomb!