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= JVB intro: === | === JVB intro: === |
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= Launchloop: === | === Launchloop: === |
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. Independent invention by many others since ( ie [[ http://spacecable.org | John Knapman PhD in UK ]]) | . Independent re-invention by many others since ( ie [[ http://spacecable.org | John Knapman PhD in UK ]]) |
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. Why not slow and tall? More deflection, less effective, vulnerable to space debris === Bolt/Rotor design === . deflection at ends . ≈ 4 kg/m, 3 cm cross section . [[ VelocityTransformer | velocity transformer track]]: air core flat windings, diamagnetic spacing stabilization? Hands waving madly . High inertia <- Halbach DC Motor <- Induction generator |
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= Questions: === | === Questions: === |
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. Power = radians × ρ × v³ / LD ( LD must be >> 1e5 ) | . Power = radians × ρ × v³ / LD ( LD must be >> 1e5 ) |
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* [[ VelocityTransformer | Velocity Transformer:]] High inertia <- Halbach DC Motor <- Induction generator . '''Stability''': can inertia synchronize generator? |
* 200 kN induction motor --- how long, how stable? |
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= Bolt/Rotor design = . deflection at ends . ≈ 4 kg/m, 3 cm cross section . 200 kN induction motor --- how long, how stable? . [[ VelocityTransformer | velocity transformer track]]: air core flat windings, diamagnetic spacing stabilization? Hands waving madly |
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= JVB PSU research = | === JVB PSU research === |
JVB/KHL 2018/07/18 agenda
- We will only have time for a subset of the below.
- KHL has hearing and visual problems, F2F required.
- KHL also developing memory problems, 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 (failed after $e7 → -$e7 )
- ICID ( $e6 but "shoulda" made RFID a $e10 business )
~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, Dirvish backup software
- Married, no kids, helped wife earn MD instead
JVB intro:
- CV and recent papers on Halbach wheels (resembles launchloop velocity transformer)
- Spacegrant for EM launch?
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
PowerLoop, first practical application: MWhr power storage (can scale beyond TWhr)
- Why not slow and tall? More deflection, less effective, vulnerable to space debris
Bolt/Rotor design
- deflection at ends
- ≈ 4 kg/m, 3 cm cross section
velocity transformer track: air core flat windings, diamagnetic spacing stabilization? Hands waving madly
High inertia <- Halbach DC Motor <- Induction generator
Questions:
- Practical/empirical motor design books (theory/math AND detailed measurement)
Linear induction motor - conservative maximum thrust N/m2 ← Rotary torque / ( 2 π w r² )
- 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
- 200 kN induction motor --- how long, how stable?
- 3D Motor FEM modelling?
JVB PSU research
- what help do you need?
- would older Tektronix test equipment help you or students?