Recent comments in /f/IAmA

NinjaMoreLikeANonja OP t1_jd7cy3w wrote

A bunch of us took a class called ENGN1760: The Design of Space Systems, taught by Rick Fleeter. Rick is a true spacelord engineer through and through (among his many achievements: he invented and launched a precursor system to GPS) so he’s- as you’d imagine- pretty well connected. He came into a launch opportunity and passed it on to the class.

At the end of the semester, four of us decided to keep going and build the project into what it is today. We grew the team to ~40 folks at Brown, and then another ~25 folks elsewhere in the world who were consulting/helping out/working with our launch provider. No one got paid- everyone did this out of the love of the game. Pretty amazing.

We aren’t the first folks to put a drag sail on a satellite but we are likely the first folks to do it as cheaply and quickly as we did it. Our hope is that the satellite demonstrates that deorbiting is not expensive, from both a financial and mass perspective. The system cost maybe $150 and weighs ~$250 grams. In the space world, that’s pretty damn good. About $140 of that build cost was the Kapton film- that stuff is expensive!- so if someone were to find a more affordable space-safe material, the system could be made far more cheaply. I would love to see that.

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yeny123 t1_jd6qjrx wrote

You're asking a lot of good questions, but I'm afraid there's not a lot of good answers right now. An HVAC contractor won't be able to tell you much. The best resource I have found is Rewiring America. Check out this IRA calculator they have. https://www.rewiringamerica.org/app/ira-calculator

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boo_monster t1_jd6f4q3 wrote

I had the pleasure of experiencing one of your incredible VIP tours last year! Thank you so much for the amazing experience!

I meant to ask you and forgot at the time but I wanted to know if there are any online records for what businesses have been in the Empire State Building? I’ve been told my grandmother worked in the building shortly after it’s opening and wanted to see if I could piece together the info of what company and possibly what floor(s) she would’ve been working on!

Thanks for doing this! It brought a smile to my face to see your face again!

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