The World of Ptavvs (2014)
“If they're going to Neptune." Anderson's voice came cheerful and energetic, though slurred by the extra weight on his cheeks. "Otherwise they'll beat us anyway, to wherever they're going. And we won't know it until they make turnover." "We'll have to risk that." The extra weight wasn't bothering Anderson at all.
One gravity is standard for manned spacecraft. Some rescue ships; and a few expresses in the Belt, have attachments for clusters of fusion/fission strap-on engines to cut their tran...sit time. Often it makes sense. More often it doesn't. Given continuous acceleration, the decrease in trip time varies as the square root of the increase in power. Greenberg and the ET should have expected their pursuers, had they known of them, to stay a day and a half behind all the way to Neptune.
A strap-on can only be used once. The smooth cylindrical shell contains only hydrogen gas under pressure and a core of uranium alloy. The fusion shield generator is external; it stays with the ship when the strap-on falls away.MoreLess
One gravity is standard for manned spacecraft. Some rescue ships; and a few expresses in the Belt, have attachments for clusters of fusion/fission strap-on engines to cut their tran...sit time. Often it makes sense. More often it doesn't. Given continuous acceleration, the decrease in trip time varies as the square root of the increase in power. Greenberg and the ET should have expected their pursuers, had they known of them, to stay a day and a half behind all the way to Neptune.
A strap-on can only be used once. The smooth cylindrical shell contains only hydrogen gas under pressure and a core of uranium alloy. The fusion shield generator is external; it stays with the ship when the strap-on falls away.MoreLess
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