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Viewing profile — jthomaslm

jthomaslm

HN member
Joined
Fri, Apr 29, 2022, 5:24 PM UTC
HN karma
259
Public activity
29 items

About jthomaslm

james@radicalaero.com

Recent public activity

  1. comment
    Comment #37910200

    Thanks for sharing. Estimating air mass and solar irradiance are definitely interesting topics - I'll take a look at what you've put together!

  2. comment
    Comment #37908797

    Thanks, I've been training! ;)

  3. comment
  4. comment
    Comment #37907995

    Thanks, next stop is the stratosphere! :)

  5. comment
    Comment #37907982

    Thanks Lars - I have emailed you!

  6. comment
    Comment #37907872

    Our aim is to fly at higher altitudes than Solar Impulse/SkyDweller, which keeps us above the turbulent winds and cloud cover of the troposphere, and makes long endurance flight mo…

  7. comment
    Comment #37907474

    Thanks, wildfires inspired us to work on this technology, so we're excited to see it used in those applications too!

  8. comment
    Comment #37907467

    Thanks, it was a lot of fun!

  9. comment
    Comment #37907240

    Thanks - feel free to reach out if you have any lessons learned you think we should know about! Being a student of history is important for a project like this!

  10. comment
    Comment #37907220

    Absolutely, we think there are some really interesting use cases around imagery too - for exactly these reasons.

  11. comment
    Comment #37907206

    Thanks - appreciate the love!

  12. comment
    Comment #37907193

    Thanks so much, it's a lot of fun to work on. Thanks for the website feedback - for the sake of clarity, our test flights with the sub-scale aircraft have all been at lower altitud…

  13. comment
    Comment #37907040

    We haven’t put this together, but that’s a great idea!

  14. comment
    Comment #37906685

    Love the enthusiasm - it's definitely a very fun project to be working on! Discussed a few of your questions elsewhere in the comments, but here are some thoughts on scaling laws: …

  15. comment
    Comment #37906479

    Wow, very cool! I've watched plenty of races at the Nurburgring but never stopped to think about how I was receiving the video feeds! If you have any contacts there I'd love to spe…

  16. comment
    Comment #37906368

    Flying at 20 km should place us above cloud cover and fire smoke, but the cells do work surprisingly well in diffuse light. Ensuring that we use imaging sensors that can cut throug…

  17. comment
    Comment #37904929

    Yes, FB were trying something similar to this with Aquila. We actually used to work with a few people on that project, it sounds like the all composite flying-wing design was a bit…

  18. comment
    Comment #37904280

    Quite a lot has changed in the past decade. Li-ion Battery energy density has roughly doubled, solar tech has come a long way (both in efficiency, but also production scale/costs f…

  19. comment
    Comment #37904036

    Atlantik Solar was a very cool project, read a lot of their research - count me as a fan :)

  20. comment
    Comment #37903865

    The aircraft is able to climb under its own power. We have a diurnal energy cycle - charging the battery up through the day and deploying battery energy in the night. If we launch …

  21. comment
    Comment #37903710

    This is a concern for us. As with many disruptive technical advancements (e.g. in Nuclear or AI), there are many ways our technology can be used - both good and bad. It's important…

  22. comment
    Comment #37903680

    Wildland forest fires were actually the inspiration for this technology! A year ago Seattle had the worst air quality in the world for a few days, which piqued my interest in the a…

  23. comment
    Comment #37903652

    Yes, Airbus’s project and team is very cool! What we’re doing shares similarities with Zephyr, but we’re focusing on a lower cost system, and a larger payload which will enable mor…

  24. comment
    Comment #37902989

    Each has merits, but in our evaluation, if you are able to overcome the aircraft design challenges, fixed-wing offers a far more capable platform. The stratosphere has winds that c…

  25. comment
    Comment #37902895

    We’ll be hiring in the near future. Early engineering hires will likely be controls/RF/EE focused, and we might bring on some biz dev support.