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"Human beings hardly ever learn from the experience of others. They learn; when they do, which isn't often, on their own, the hard way."
- Robert Heinlein
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| Trajectory Ship | ||
| A spaceship that takes the minimum energy route to another planet, with the passengers weightless. |
| You ought to be glad the Evening Star is a high-gravity ship instead of a trajectory job. Then you’d really be sick, and no foolin’.”
“How’s that?” “I mean that she accelerates or decelerates her whole run. Have to, because she carries cabin passengers. If we had been sent by a freighter, it’d be a different story. They gun ’em into the right trajectory, then go weightless for the rest of the trip. Man, how the new chums do suffer!” He chuckled. |
| Technovelgy from Logic of Empire,
by Robert Heinlein. Published by Astounding Science Fiction in 1941 Additional resources -
|
Compare to other spaceships, in particular, compare to a ship with Lyle drive from Heinlein's Stranger in a Strange Land (1961), a continuously operating acceleration providing "weight" to passengers.
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'...small electric motors at the principal joints worked the prosthetic framework by means of steel cables...'
'Living protoplasm incorporated into the Ampek F-a2 recording system...'
'Twoflower's Luggage, which was currently ambling along on its little legs...'
'He came to as the ship went into free flight, arching in a high parabola over the plains...'
'The peculiar quality of this light, which gave it its great preeminence over all other penetrating rays...'
'The overworked leg motor would have to cool down before he could work on it...'
‘Where to, sport?’ the starter at cab relay asked.
