Erandall Nelson

Questions and Answers (11) View all

• Answer added in Programming Languages
  593 Which first language do you think is the best for learning programming techniques?
  By Carlos Bazilio · Universidade Federal Fluminense
  Erandall Nelson

  I'm trying to find a self-contained tutorial for using C++ to write windows programs-just to keep from learning two different things at once. I'm curr... [more]

  I'm trying to find a self-contained tutorial for using C++ to write windows programs-just to keep from learning two different things at once. I'm currently in a Language II class using Malik's 5th Ed. (...with Data Structures) book. (I'm still looking for an affordable copy of Petzold's book.) I'm not doing this for a job or because I need to create the "Next Great Computer Program to..." I want to explore concurrency/parallel-ism because the concept fascinates me. Also, C++ is relatively close to the metal and enjoying enough renewed popularity to have new material "in the pipeline."
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• Answer added in Space Technology for Development
  32 Manned, deep space vessel with centrifugal section.
  By Erandall Nelson
  Erandall Nelson

  I was wondering about the frictionless bearing' concept. I presume it would be using a version of mag-lev technique? What would provide the rotation i... [more]

  I was wondering about the frictionless bearing' concept. I presume it would be using a version of mag-lev technique? What would provide the rotation impetus, rim-mounted thrusters? Or is there another method of increasing/decreasing rotation? Interested in thoughts and established knowledge in this area.
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• Answer added in Space Technology for Development
  32 Manned, deep space vessel with centrifugal section.
  By Erandall Nelson
  Erandall Nelson

  Okay, my concern was energy usage for stopping/starting rotation. Trying to refine concepts for long-term manned journeys mitigating the consequences ... [more]

  Okay, my concern was energy usage for stopping/starting rotation. Trying to refine concepts for long-term manned journeys mitigating the consequences of microgravity on human systems, physiological and psychological. I don't imagine continuing rotation during major course corrections, but minor ones; and, possibly, orbital translations. Will check back later for any feed back. Thanks for your contributions, Rich.
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• Answer added in Space Technology for Development
  32 Manned, deep space vessel with centrifugal section.
  By Erandall Nelson
  Erandall Nelson

  Have you seen the movie 2010? The Leonov translated from Io orbit to another Jovian orbital level without stopping the "habitat's" rotation (the only ... [more]

  Have you seen the movie 2010? The Leonov translated from Io orbit to another Jovian orbital level without stopping the "habitat's" rotation (the only time it stopped during the movie was when it 'clamped' onto the spine of Discovery). I am trying to get a feel for which method would make this maneuver more practical. [When the people at Babylon 5 used the same design for the EarthForce destroyers, he was preparing to gimbol (sp) the engines to compensate for the angular effects of the rotating habitat equipped with fighter launch bays.]
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• Answer added in Space Technology for Development
  32 Manned, deep space vessel with centrifugal section.
  By Erandall Nelson
  Erandall Nelson

  Rich, This will probably expose my complete ignorance, but, which seems more practical: to compensate by calculation for the angular momentum resultin... [more]

  Rich, This will probably expose my complete ignorance, but, which seems more practical: to compensate by calculation for the angular momentum resulting from a centrifugal section when changing velocities on the linear axis; or, to install a counter-rotating flywheel system to minimize to angular vector impact? [That is: mechanical versus mathematical complication.]
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