Speakers on power beaming

[paul....@gmail.com]

Hi folks,

I have some more guest speakers that may be of interest to folks on this list. They are on Tuesdays at 7:30pm ET. Here are the specifics:

2021-03-23         Rich Madonna - Caltech Space Solar Project

2021-04-13         Bert Murray & Robert Winsor - Eye-safe Laser Power Beaming

2021-04-20         Naoki Shinohara - Wireless Power Transmission in Japan

2021-04-27         Dallas Bienhoff - Space Transportation Options

2021-05-04         James McSpadden - Microwave Power Beaming Tech and Regulatory Challenges

2021-05-11         Chris Davlantes - High-Efficiency Microwave Power Beaming Prototyping

This is the join link:

https://umd.zoom.us/j/94636835148?pwd=NFcvYi9kRmZ2ZCtvdlkzT3UwY3ZSdz09

Feel free to provide to others that may be interested.

Thanks,

Paul

[侯欣宾]

Dear Paul,

Thank you for your important information. 

I wonder if the first talk will start  20 minutes later?  But I can not access the room. 

Best wishes

Xinbin

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[Joseph Rauscher]

Paul, et al:

Will these presentations be recorded? If so, where can they be viewed?

Joe

[paul....@gmail.com]

Hi Joe,

I made a recording of the most recent one and am looking into whether it can be shared. Future ones will depend on the speaker's preference.

Thanks,

Paul

[John Bucknell]

All,

I took some notes from the update Rich Madonna gave on Caltech's SSPP Tuesday night.  Attendance was a who's who, so that was quite pleasant - I asked Paul Jaffe to record the Zoom so others might hear per the prior email.

Overall, I would not have made the design trades the Caltech team has - but huge progress and most importantly an orbital demo is mere months away.  That is a fantastic that we have operational space solar power hardware in space this year from two different teams (Paul Jaffe's and Caltech), even if subscale.

Apologies if I mis-attribute your affliation.

Presenter: Dr. Rich Madonna

Attendees: 

• ·  Dr. Paul Jaffe (UMD)

  ·  John Bucknell (Virtus Solis)

  ·  Dr. Al Globus (UC San Jose)

  ·  Skylar Hoffert (student)

  ·  Dr. John Mankins (ex-NASA SSP head)

  ·  Dr. Naoki Shinohara (Kyoto University)

  ·  Dr. Xinbin Huo (China Academy of Space Technology)

  ·  Dr. John Olds (Spaceworks)

  ·  Charles Hall (Spaceworks)

  ·  Jeff Madonna

  ·  Rian Moriarty

  ·  Michael Sanders (USNA)

  ·  Haroon Oqab (Kepler Space Institute)

  ·  Darel Preble (Space Solar Power Institute)

  ·  Takayuki MATS

  ·  Keith Henson

Progress since 2019, pending publication in near term

• Maintaining 'membrane' deploying concept - prior concept with deployable parabolic concentrators and antenna too expensive to manufacture
• Switch to thin film GaAs PV (Alta Devices/MicroLink)
• Transparent conductor, PV, Ground Plane, RF/Power electronics and antenna layers about 1000microns thick
• Improved deployment with a pneumatic inflator of membrane  
  
• Update power beaming from 2.45GHz to 10GHz
  
• CMOS IC power amplifier, phase shifter, 16 antennas (3x3mm) now in 8th generation
• Built and testing printed flexible 256 antenna trasnmitter
• SW compensation for shape of antenna, based upon exciting one antenna and rest receiving to triangulate position
• System Engineering
• Improved availability of power transmission from 45% to 75%+ by moving to dual face operation (PV or RF from both sides of membrane)
• LCOE-based analysis of engineering assumptions
• Evaluated GEO and MEO orbital constellations, recognizing GEO is crowded
• 15year life assumed
• Orbital demo at end of year as rideshare on Momentus Vigoride demo mission (6mo duration)

John

John Bucknell

CEO | Founder

Virtus Solis Technologies Inc

www.virtussolis.space

248-259-9424 mobile

This is my old email account, now my son's.  If you want to reach me send me an email at jo...@virtussolis.space.

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