Propelling force of Atomic Blast?

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Discussion Overview

The discussion centers on the potential speed a spaceship could achieve in space as a result of an atomic blast, assuming it is protected from the harmful effects of the explosion. Participants explore theoretical implications and mechanisms related to nuclear propulsion and the effects of an explosion in a vacuum.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant queries the speed achievable by a spaceship in space due to an atomic blast, seeking a method to calculate this.
  • A link to Project Orion is provided, suggesting a context for nuclear propulsion methods.
  • Another participant questions the term "nearby," indicating that if the bomb is not directly connected to the spacecraft, the primary concern would be radiation rather than a blast effect due to the vacuum of space.
  • Some participants propose that even without direct connection, the vaporized casing of the bomb could impact the spacecraft's pusher plate, potentially allowing the ship to reach speeds close to that of the vaporized material.
  • It is suggested that using multiple bombs could enable the spacecraft to exceed the velocity of the bomb fragments, drawing a parallel to rocket propulsion where speed is not limited by exhaust velocity.

Areas of Agreement / Disagreement

Participants express differing views on the effects of an atomic blast in space, particularly regarding the significance of radiation versus blast effects and the implications of using multiple bombs. The discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Assumptions about the nature of the atomic blast, the definition of "nearby," and the mechanics of vaporization and propulsion are not fully explored, leaving some aspects of the discussion open to interpretation.

Christina2015
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Assuming a spaceship could be impervious to the damaging effects of a nearby atomic blast, what speed could the ship reach in space due to the explosion? Interested to know how to figure that.
 
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When you say "nearby", is the bomb directly connected, such as Orion? If it is simply nearby, the major effect on the spaceship would be radiation. There would not be any blast effect (vacuum).
 
But even if the bomb was not directly connected, the vaporized casing would impinge on the pusher plate (say) of the space craft. It seems with enough bombs the ship would approach the velocity of the vaporized casing.
 
Aaronvan said:
But even if the bomb was not directly connected, the vaporized casing would impinge on the pusher plate (say) of the space craft. It seems with enough bombs the ship would approach the velocity of the vaporized casing.

With multiple bombs the ship is not limited to the velocity of the bomb fragments, for the same reason that the speed of a rocket is not limited by its exhaust velocity.
 

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