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"To get anywhere, or even live a long time, a man has to guess, and guess right, over and over again, without enough data for a logical answer."
- Robert Heinlein
 |
| Michael (Orion Ship) | ||
| A spacecraft using nuclear bombs for propulsion. |
The Earth is attacked from space; all military forces and spaceports are destroyed. How can humanity get back into space with what they have, and destroy the invaders?
| The screens hadn't changed in several minutes. One, from a camera on the dome wall, showed Michael in full. Two great towers stood on the curve of the hemispherical shell, with cannon showing beneath the lip, aimed inward. Four smaller towers flanked them. A brick-shaped structure rose above them. The Brick was much less massive than the Shell, but its sides were covered with spacecraft: tiny gunships, and four Shuttles with tanks but no boosters. The Brick's massive roof ran beyond the flanks to shield the Shuttles and gunships. |
| Technovelgy from Footfall,
by Larry Niven (w/J. Pournelle). Published by Ballantine in 1985 Additional resources -
|
There was a real Project Orion; it originated at General Atomics in San Diego. Physicist Theodore Taylor and others examined the feasibility of a nuclear-pulse rocket powered by nuclear fission. The original idea was put forward by Stanislaw Ulam and Cornelius Everett in 1955. Bombs set off on one side of a pusher plate with some solid propellant material would push on the plate, moving the craft forward.
Aldo Spadoni of Aerospace Imagnineering has created detailed technical drawings of Michael, working with Larry Niven.
(Michael [Drawing by Aldo Spadoni])
Read more about the real Orion Project.
(Model of the Orion nuclear pulse propulsion spacecraft)
Here's another example of the same idea, the Atomic Pulse Rocket. I believe the cool picture is part of an ad campaign for American Bosch Arma (a defense contractor) in 1958-59.
(Atomic Pulse Rocket [American Bosch Arma])
Weighing in at about 75,000 tons, and roughly the size of the Empire State Building, this behemoth would leave the atmosphere under the influence of about a thousand atomic blasts.
Each atom bomb is fired from a low-velocity gun into a heavy steel rocket engine at the rate of one per second. Steam and vaporized steel from the combustion chamber maintain thrust. Living quarters are housed in the wheel-like cabin, which can of course be spun for artificial gravity.
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Additional
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More Ideas
and Technology from Footfall
More Ideas
and Technology by Larry Niven (w/J. Pournelle)
Tech news articles related to Footfall
Tech news articles related to works by Larry Niven (w/J. Pournelle)
| Europa Clipper Plate Carries A Special Message |
| China Wants To Build Mega Space Ships |
| Dream Of Building Your Own Rocket? |
| Used Dragon Cargo Spacecraft Will Fly Again |
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I'm hoping that this procedure becomes a normal part of medical practice!
'... nothing was perfected until M. Pantalon announced the completion of his automatic valet.'
'...its streets were of remarkable width, with few or no buildings so high as mosques, churches, State-offices, or palaces in Tellurian cities.'
'...it was all composed of tiny, identical cubes, carefully laid to form a tilelike surface.'
'He carried on his person a triggering mechanism sensitive to his heartbeat.'
'...Anything was possible in my imaginary environment.'
'Somewhere in space, a chrome and blue automobile raced the green light of Earth.'
'That explains how it was so easy for me to remain motionless in midair...'
