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=== JZB/KHL 2018/07/18 agenda === === JZB/KHL 2018/08/29 agenda (updated) ===
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 . ICUBE routed early internet (failed after $e7 → '''-'''$e7 )
 . ICID ( $e6 but "shoulda" made RFID a $e10 business )		  . ICUBE routed early internet ("distraction" fail, $e7 → '''-'''$e7 )
 . ICID ( $e6 but "shoulda" made RFID a $e10 business, "missed meeting" fail )
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  . I have read your CV and recent papers on Halbach wheels (resembles launchloop velocity transformer)
  . Spacegrant for EM launch?		   . I have read your CV and recent papers on Halbach wheels (vaguely resembles launchloop velocity transformer)
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 . PlaneLoop, first practical application: rail launch for solar-assist electric aircraft  . PlaneLoop, first practical application: rail launch for solar-assist electric aircraft in developing world
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 . Why not slow and tall? More subsurface vertical deflection, less effective, vulnerable to space debris
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 . deflection at ends
 . ≈ 4 kg/m, 3 cm cross section		  . TrapezoidBolt for deflection at ends
 . ≈ 4.3 kg/m, 6 bolt streams, 3.6 cm cross section
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 * One or two privately-subsidized foreign students for loop-related work - $/PhD
 * Linear PM induction motor - maximum thrust N/m² (Pa)? Linear induction generator, maximum "negative thrust" (power density/velocity)?		  * One or two privately-subsidized foreign students for loop-related general research work - $cost/PhD $400K?
 * Linear PM induction motor - maximum thrust N/m² (Pa)? [[ http://launchloop.com/MotorModel | Linear induction generator]], maximum "negative thrust" (power density/velocity)?
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 * 3D Motor FEM modelling? Open source or Linux Compatible strongly preferred  * 3D Motor FEM modelling? Open source or Linux-compatible strongly preferred

JZB/KHL 2018/08/29 agenda (updated)

  • We will only have time for a subset of the below.
  • KHL has hearing and visual problems, F2F required, no webmeetings
  • KHL has memory issues, will make lots of notes
  • can sign NDA, but prefer to avoid

KHL intro:

  • MSEE UCB 1974 (Josephson Logic) 1977 TMAG paper

  • Integrated circuits: Tektronix, consulting, two startups

  • IEEE 1149.4 analog boundary scan standard

  • ICUBE routed early internet ("distraction" fail, $e7 → -$e7 )

  • ICID ( $e6 but "shoulda" made RFID a $e10 business, "missed meeting" fail )

  • ~20 papers; 1 with Rob Daasch that founded new field (300? citations)

  • ~12 patents incl. foreign (dislike, but protects customers from copycat trolls)

  • Open source software: BSD Y2K patch, Linux, Dirvish backup software

  • Married, no kids, helped wife earn MD instead
  • scatterbrained but striving for discipline and rigor

JVB intro:

  • I have read your CV and recent papers on Halbach wheels (vaguely resembles launchloop velocity transformer)

  • What do you wish you had time to work on?

  • Other

Launchloop:

  • active "hobby" 1980 to 1988, completing work now

  • 1985 AIAA conference paper, pubs, presentations to space advocacy groups

  • Independent re-invention by many others since ( ie John Knapman PhD in UK)

  • Two research groups currently active, one with >$1M funding + 4 professionals

  • PlaneLoop, first practical application: rail launch for solar-assist electric aircraft in developing world

  • PowerLoop, second practical application: MWhr power storage (can scale beyond TWhr)

  • Bolt/Rotor design:

  • TrapezoidBolt for deflection at ends

  • ≈ 4.3 kg/m, 6 bolt streams, 3.6 cm cross section

  • velocity transformer track: air core flat windings, diamagnetic spacing stabilization? Hands waving madly

    • High inertia <- Halbach DC Motor <- Induction generator

Questions

  • One or two privately-subsidized foreign students for loop-related general research work - $cost/PhD $400K?

  • Linear PM induction motor - maximum thrust N/m² (Pa)? Linear induction generator, maximum "negative thrust" (power density/velocity)?

  • Can an accelerating PM synchronous motor (with "pre-exciter") provide reactive VARs for a linear induction generator?

  • Iron nitride earth-abundant supermagnets; grant-mongering B.S. or cheap replacement for Halbach array NIB?

  • Programmable motor control integrated circuits: Sensor inputs, Calculation/Communication, Gate driver outputs?

Sources desired:

  • Practical/empirical motor design books with complete models, simulated (and measured?)
    • detailed examples with theory/math AND parameter characterization:
      • iron saturation, heat, breakout torque, tolerances
    • how does abstract design translate to actual motors and generators?
    • What fails? What is inaccurate or misleading in typical designs?
  • Inductrack - estimate ultrahigh speed drag/lift ratio (skin effect)

    • Power = radians × ρ × v³ / LD ( LD must be >> 1e5 )

    • predictive/adaptive electronic control instead: global stability, loop gain, computation, and redundancy
  • 3D Motor FEM modelling? Open source or Linux-compatible strongly preferred

JVB PSU research

  • what help do you need?
  • would older Tektronix lab equipment help you or students?

JZB1 (last edited 2018-08-29 01:22:13 by KeithLofstrom)