Is a Vertical Mass Driver Possible?

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Discussion Overview

The discussion revolves around the feasibility of a vertical mass driver for launching payloads into space, specifically whether it is more effective for achieving escape velocity or if it can be integrated with horizontal propulsion to facilitate orbital insertion. The conversation touches on theoretical considerations, practical challenges, and potential applications of mass drivers in space launch systems.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants propose that a vertical mass driver could be used to attain escape velocity, while others suggest it might be more effective when combined with horizontal propulsion for reaching orbit.
  • One participant notes the advantage of launching rockets from the equator due to the Earth's rotation, which could enhance launch efficiency.
  • There are concerns regarding aerodynamic heating and the structural loads on the spacecraft during launch.
  • Participants discuss the potential of a mass driver to reduce the amount of propellant and total mass needed for launch, suggesting it may serve as a launch-assist mechanism.
  • A later reply questions the possibility of reaching L1 with minimal horizontal thruster burn, assuming the mass driver extends beyond most of the atmosphere.

Areas of Agreement / Disagreement

Participants express varying opinions on the effectiveness of a vertical mass driver versus a combined approach with horizontal propulsion. The discussion remains unresolved, with multiple competing views on the best application of mass drivers in space launches.

Contextual Notes

Participants mention several factors that could influence the effectiveness of a mass driver, including aerodynamic heating, structural loads, and the specific design of the launch system, but these aspects remain underexplored and not fully resolved.

jarenf
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I was wondering, if a Mass Driver launching only vertically would be best used to attain escape velocity, or if it could be coupled with horizontal propulsion to reach an orbit around the earth.

(P.S. I apologize if this sounds a tad unclear and hastily written, I lost my original post)
 
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I'm not sure what you are asking but there is an advantage to be gained by launching rockets at the equator.
 
jarenf said:
I was wondering, if a Mass Driver launching only vertically would be best used to attain escape velocity, or if it could be coupled with horizontal propulsion to reach an orbit around the earth.

(P.S. I apologize if this sounds a tad unclear and hastily written, I lost my original post)
There are two parts to this problem - acceleration from rest to some 'launch' velocity at the end of the mass driver, and deceleration from that velocity to some velocity at orbit or to near escape velocity at some altitude from the launch site.

Aerodynamic heating is a major concern, as are the loads on the spacecraft .

The benefit of a mass driver is the reduction of propellant and total mass required to get the launch going.

The utility of a mass driver may be as a launch-assist, but one will likely need some propulsion.

An equatorial lauch takes advantage of the Earth's rotation.
 
Sorry I wasn't very clear.. Assume for a second the mass driver extends up past most of the atmosphere. Would it be possible to reach L1 With as little horizontal thruster burn as possible?
 

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