lochieferrier

6 ms·

1.
by lochieferrier 4y ago
Plane Hunters: https://www.plane-hunters.com/ I've been running this for the past few months. It's a search engine / aggregator for used aircraft. It's really hard to search for used aircraft and sort th
2.
by lochieferrier 6y ago
BETA Technologies | Full time | on-site or remote | South Burlington VT We build the world's highest performance electric aircraft. You can read more about our latest 6,000 lb aircraft we are flying here: https://evtol.com&#
3.
by lochieferrier 9y ago
Code is here: https://github.com/hoburg/jho
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by lochieferrier 9y ago
NASA Helios was quite expensive and tricky to build, with not a lot of margin left for useful payload. There's a weight runaway that occurs with solar powered aircraft, look at Fig 12 in this report: http://hoburg.mit.edu&#x
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by lochieferrier 10y ago
It's online now! Sorry it had the usual HN flop.
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by lochieferrier 10y ago
For sure, but they have a limited range of packages installed, and can be tricky to tune towards a specific need.
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by lochieferrier 10y ago
You can already do this exact thing with a Python library on the user machine, see here for install instructions: https://gpkit.readthedocs.io/en/latest/installation.html The intent here is to make it easy for peo
8.
by lochieferrier 10y ago
Yes, there was an issue with someone nuking the compiler box, and we're working on fixing the demo up. This does more than LPs, it lets you formulate GPs, which are a way of doing non-linear analytical optimization. See here for more:
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Show HN: Solve Geometric Programs in the Browser(prandtl.design)
49 points by lochieferrier 10y ago|22 comments
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$100k Metal 3D Printer(3dprintingindustry.com)
1 points by lochieferrier 10y ago|0 comments
11.
by lochieferrier 10y ago
Wow, that is really beautiful. Topology optimization is cool stuff. I think it's key for optimization to be fast so that the designer can get a feedback loop going between the computer and the ideas in their head. Would love to talk ab
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by lochieferrier 10y ago
For sure, there's a lot missing, title is probably misleading. Definitely nothing new in terms of the CAD, browser CAD has been well done, just look at professional products like Onshape. Right now it's primitives only for this, o
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by lochieferrier 10y ago
This is correct, much better than what I said.
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by lochieferrier 10y ago
Yes it's considering the weight of the battery, as well as the weight of the motors. It doesn't factor in the props, I didn't get around to that. The props have inaccurate geometry of course, which I'm looking to fix wit
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by lochieferrier 10y ago
I think by react you meant react to, which was fair enough, it was dodgy as. Now running well. The property of getting a guaranteed optimum is something that arises from setting the design problem up as a geometric program. You won't a
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by lochieferrier 10y ago
Fixed it, didn't know about pythonpath with gunicorn.
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by lochieferrier 10y ago
Nope, I just have no idea what I'm doing.
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by lochieferrier 10y ago
Currently solved server side, though assembled on the client side (see console) with gpkitjs and then passed through to GPkit. Packages here: https://github.com/lochieferrier/gpkitjs and here: https://githu
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by lochieferrier 10y ago
The difference is that there is a simple physics model that's driving the dimensions. So the arms are getting resized according to beam bending, the battery is a certain size for the energy requirement, motors are sized by kw/kg a
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by lochieferrier 10y ago
This is my first time putting something up, everything is breaking, fixing it now.
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Show HN: Physics-based CAD(prandtl.design)
104 points by lochieferrier 10y ago|27 comments
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Frontier Interviews(web.mit.edu)
2 points by lochieferrier 11y ago|0 comments
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Electric Aircraft Range Calculator(web.mit.edu)
1 points by lochieferrier 11y ago|0 comments
24.
by lochieferrier 11y ago
I wrote the article, what you and everyone else has said is super true. I liked the Apollo 11 missions as much as everyone else, and I think I am off base. It's not a sport.
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by lochieferrier 11y ago
Hey man, I think you're off base here. The problem is that the Moon does not have significant resources, so you can't really make anything on the Moon and then launch it from there. It may be possible to make some propellants, but
26.
Why the SpaceX landing is Better than Apollo 11(lochief.com)
74 points by lochieferrier 11y ago|82 comments
27.
Electric Airports(lochief.com)
3 points by lochieferrier 11y ago|1 comments
28.
Get Project Ideas(lochieferrier.typeform.com)
2 points by lochieferrier 11y ago|0 comments
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Show HN: Conrod – Reprogram your car(kickstarter.com)
1 points by lochieferrier 11y ago|0 comments
30.
Patent for much cheaper and lighter telescope using mylar and laser(google.com)
2 points by lochieferrier 11y ago|0 comments

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