stass

6 ms·

1.
by stass 1y ago
I cheated a little bit and don't calculate the fluid dynamics in real time. Instead, I'm using force models from the excellent Aero-Hydrodynamics of Sailing book by Marchaj, which is sadly out of print. I then do iterative balan
2.
by stass 1y ago
SailRhythm is a bit WIP, so didn't want to share too early! Thank you so much for the detailed feedback. I do have plans to implement wind flow visualization and have a way to visualize forces as well. Controls a bit tricky to do, bu
3.
by stass 1y ago
You get water graphics for free from three.js
4.
by stass 1y ago
If other people are interested in sailboat physics -- this resource is a goldmine of information on how sailboat and sails work and physics around it: https://www.onemetre.net/Design/Design.htm
5.
by stass 1y ago
Please!
6.
by stass 1y ago
Definitely recommend taking an introductory ASA 101/102/103 classes from a local school! Will help you decide if you are into it while having some fun. This is how I started.
7.
by stass 1y ago
I built one recently to mostly help myself visualize how sail trim worked and how various boat controls like mainsheet and backstay affected sail shapes, various forces and boat performance. It uses a physics-based VPP and I calibrated it
8.
by stass 1y ago
There is a great school called Modern Sailing School in Sausalito. I highly recommend taking a class from them. I took one in the past and they are great! Will help you figure out if you are into sailing or not.
9.
by stass 1y ago
Not my demo! But I got inspired by it some time ago to build a simulator for monohulls which uses a physics based VPP to calculate the boat speed based on input controls like mainsheet, jib sheet, travelers, backstay and so on at https:&#
10.
Sail-Trim Simulator(simulator.atterwind.info)
140 points by stass 1y ago|28 comments
11.
by stass 1y ago
Even still a lot of information is not online. I've been building a web sail trim simulator and had to hunt down a physical copy of the Aero-Hydrodynamics of Sailing book by Marchaj, because a lot of the formulas and models I needed t
12.
by stass 1y ago
This site is an absolute treasure trove of technical material on sail and hull design, with a focus on model yachts but most of the physics scales up. It covers aerofoil theory (momentum, circulation, lifting line), sail twist, downwash, pl
13.
How a yacht works: sailboat physics and design(onemetre.net)
254 points by stass 1y ago|76 comments
14.
by stass 1y ago
You can now automatically debug native apps from Claude or Cursor using LLDB. Here it is automatically analyzing buffer overflow in a binary: https://x.com/full_duplex/status/1904770477698277847
15.
MCP Server for LLDB(github.com)
3 points by stass 1y ago|1 comments
16.
by stass 2y ago
Does this somehow disqualifies SpaceX as a contract supplier?
17.
by stass 2y ago
Considered by who? By which metric?
18.
by stass 2y ago
Land in desirable areas is limited and zoning and other government red-tape prevents high-density housing from being built (or any housing being built period in cases like San Francisco).
19.
by stass 2y ago
What's wrong with Mimosas? They smell so nice in spring!
20.
by stass 2y ago
I can't believe I'm arguing that it's immoral to steal on HN, but here we are... Yes, you might decide that breaking your moral code to feed yourself or your family is an acceptable tradeoff, but it's a tradeoff nonethel
21.
by stass 2y ago
Both are completely immoral.
22.
by stass 3y ago
From the recent stuff, remember the lab leak theory where any mentions of which were getting removed from Twitter, Facebook and Youtube, including the scientific papers that looked into it?
23.
by stass 3y ago
It essentially became a public square of the internet, so it's important to have it as censorship free as possible.
24.
by stass 4y ago
There was an actual rise in crime, both perceived and statistical, immediately after he was elected. Hell, Boudin ran on a campaign that people like his terrorist parents should not be prosecuted. It's a well documented fact that Boud
25.
by stass 5y ago
The majority of these challenges are direct result of the government's corruption and incompetence. See e.g. housing crisis, or student debt issue, or massive drug proliferation.
26.
by stass 6y ago
And yet it was used as inspiration to murder 20M+ people by explicitly dehumanizing whole classes of people.
27.
by stass 6y ago
The issue is that they are not just removing racist or hateful content according to some kind of standard. They are going after hot topics of the day, whatever it happens to be. Even worse, hateful and racist content that is ideologically
28.
by stass 6y ago
Communist Manifesto and Lenin's books are allowed without any comments though. There are books by actual terrorists too, like Bill Ayers. Books advocating for segregation. One can go on. This fine example is ok too: https:/&#x2
29.
by stass 6y ago
CPI might not be high, but inflation can show itself in different places. Asset inflation has been increasingly high since 2019, which is clearly visible in stock market, real estate and commodity markets. Similarly, construction materials
30.
by stass 6y ago
What was invented in CERN was hypertext. WWW and internet was largely built and commercialized in US. I think it’s fair to say that a lot of innovative technologies were invented in Europe, but most of them end up being commercialized in U

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