mechhacker

10 ms·

61.
by mechhacker 3y ago
Yup, that's the speed. It can be dangerous. During races they are required to wear impact vests and helmets. Another innovation is a new kind of harness for the connection to the sail that releases above a certain force. A lot of the i
62.
by mechhacker 3y ago
Hydrofoils have been exploding in popularity in watersports. It used to be seen as a thing to do on light wind days, because it lets you go faster than the board usually limits you if you can't get hydroplaning. Hydroplaning takes a lo
63.
by mechhacker 3y ago
I personally haven't had much of a problem other than where I now live doesn't have the best service indoors. Another thing that I really liked was when I was traveling in Europe, I had free basic internet and texts. This was NOT
64.
by mechhacker 3y ago
I use a different free app for forecasts, and it typically catches thermal winds like sea breezes with the default model. I still get skunked every now and then and show up at the beach with a board and not enough wind to go fast...
65.
by mechhacker 3y ago
I was always inclined to spend it something like this if I had it: https://en.wikipedia.org/wiki/Kermit_Weeks
66.
by mechhacker 3y ago
And BMI says nothing of body fat percentage Can have higher BMI and lower bodyfat I'm not convinced BMI is a useful metric
67.
by mechhacker 3y ago
This is true for a lot of mechanical devices. For example, turning engines on and off heavily thermally cycles them. It can get worse when they are rapidly cooled or rapidly heated. Jet engines running at constant speed have high cycle fat
68.
by mechhacker 3y ago
I remember playing around with this. Went and looked at my private repo and it was ~6 years ago. Interesting idea, since I was enjoying Phoenix and Elixir. However, I jumped too quick I think into making a Rust NIF and it made the whole thi
69.
by mechhacker 3y ago
Having to go back to the office would now require me moving 3000 miles across the country, to a place that made me depressed every winter. To a place that had some of the most restrictive policies the last few years. And to a spot that has
70.
by mechhacker 3y ago
Thank you. Man, that explains a lot of my easy to sleep but wake up early in the morning issues.
71.
by mechhacker 3y ago
The entrance fee to America's online news articles keeps rising
72.
by mechhacker 3y ago
Is photoshop absolutely necessary? Krita is a great tool and works with a lot of the graphics tablets on the market (not sure about the ones with a display but maybe?), and I was using it on Linux many years ago. https://krita.or
73.
by mechhacker 3y ago
I didn't even know that they didn't have a good explanation related to magnets, as invar for example has a curie point, above which it loses it's neutral thermal expansion properties. I've seen it used for low temp thing
74.
by mechhacker 3y ago
If you look down you also see how far away the ground is. Always find myself subconsciously wondering how to react if the bridge/plane somehow separate.
75.
by mechhacker 3y ago
Would be interesting to me to have something like this, but in landscape mode, and with slowly changing blueprints of aircraft, rockets, ships, cars... Example: https://www.thesr71blackbird.com/Portals/14/EasyGalle
76.
by mechhacker 3y ago
Evernote lost me when they changed the UI and made it take 5 taps/clicks to do what took 1 before. Was happy paying for it until then. Now apple notes has replaced it. I tried obsidian as well but like notes better
77.
by mechhacker 3y ago
No. Subs are different from scuba. They are kept at atmospheric pressure. For scuba, you are breathing pressurized gasses much higher than 1atm at depth, which causes decompression issues.
78.
by mechhacker 3y ago
If the bond failed before the tube, then it would probably just leak like they did earlier in the video. The high velocity/high deformation collapse inward would probably cause any bond line or the fibers in that proximity to fail anyw
79.
by mechhacker 3y ago
It's a good thing that they had dissolvable weight releases but I'm still amazed at the lack of backup systems and still letting passengers onboard. Related to this, the Hydraulic Press channel did a somewhat similar implosion tes
80.
by mechhacker 3y ago
Yes I don't think it gets to the same depth. They used an off the shelf tube (presumably then getting consistent layup/quality), which gave it a definite thickness and diameter. There are nondimensional structural similarity param
81.
Carbon Fiber Submarine Implosion: How Many Dives Can It Withstand? [video](youtube.com)
4 points by mechhacker 3y ago|3 comments
82.
by mechhacker 3y ago
This is a video by the hydraulic press channel which uses a scaled, very similar geometry to the Titan submarine which unfortunately failed recently. They explain some of the details here, and show high speed footage of what happens when th
83.
by mechhacker 3y ago
It took over a year of mandatory 2fa w/ phone app before they stopped making us change our password every month. At least my password isn't changing anymore but I never understood that policy if you made a strong password. It was
84.
by mechhacker 3y ago
In a similar situation/location. But can't access it through my home internet, but my phone is just fine if I turn off wifi. This is funny because I was still getting push notifications, I just couldn't read them with my phon
85.
by mechhacker 3y ago
Really happy with my Fenix as well. It's only crashed once when recording where it lost data (3+ hour long GPS session), but other than that I haven't really had serious issues. I will force a reboot occasionally but the user expe
86.
by mechhacker 3y ago
I just saw this: https://www.youtube.com/watch?v=uP4SrLhUHY8 Those tarps may be covering what's left of the crew
87.
by mechhacker 3y ago
Interesting that the overall concept of the Trieste is very similar to the Limiting Factor. The main difference being instead of using gasoline as bouyancy, they use syntactic foam. It seems like that made the overall vessel smaller. But th
88.
by mechhacker 3y ago
Worth noting that because he's using a hydraulic press, the load isn't constant. It deforms, fibers break, and thus the load decreases as the deflection stays relatively constant in that time frame. With external pressure the load
89.
by mechhacker 3y ago
There are non-trivial differences in designing vessels loaded with compression vs. tension, and the most experience we have is with internal pressure (e.g. tension). The analysis is very nonlinear and unfortunately not as widely understood
90.
by mechhacker 3y ago
I see. Thus that large Ti flange that was bonded to the dome didn't carry a load through the bolts significant enough to deform the dome either. Carbon gone in a flash and comes apart at that joint totally, Ti is left hanging in water.

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