planteen

31 ms·

301.
by planteen 9y ago
> Finger wag at India, too. This should have been checked Yeah, I'm surprised it wasn't. I've heard of dispensers on the ISS being zip tied shut and not cut until confirmation of license.
302.
by planteen 9y ago
> Small particles like engine exhaust are a problem (they can cause pitting, etc), not large objects Tell that to Iridium, who gets too many collision warnings a week to act on them, and lost of functioning satellite. The collision was b
303.
by planteen 9y ago
I can't imagine this company will ever successfully be able to pull a license after this stunt. What a short sighted move.
304.
by planteen 9y ago
> It has nothing to say whatsoever about whether the satellite can be there in orbit. I'm not an expert in space law, but I did work in the space industry for a while. A few things: The US government in general does have a say in wh
305.
by planteen 9y ago
OpenGL ES 2.0 and higher cleans a lot of that up. Crufty old calls are removed. You simply include a header and link a library without the need for a complex loader (though there still are extensions).
306.
by planteen 9y ago
What about cern.int instead of cern.ch?
307.
by planteen 9y ago
One good reason is speed limits lead to noise control.
308.
by planteen 9y ago
Definitely a lot of bandwidth required. 60 fps 4k would be 1.7 GiB/sec, 120 fps twice that. 3840×2160×10×3×60÷8÷1024÷1024÷1024
309.
by planteen 9y ago
Maybe. If I remember correctly, the total ionizing dose (TID) at GEO is around double what it is at LEO. There are more single event effects (SEE) at GEO which would have to be handled. Most small sats at LEO use commercial parts and can op
310.
by planteen 9y ago
Iridium used to have multiple gateways. I think Arizona, Italy, Middle East, and Asia. Do they only use Arizona now?
311.
by planteen 9y ago
Ok, I'll hit you with 3 questions: 1. What bandwidth capacity are you aiming for per spacecraft? 2. Are you using commercial or rad hard parts? 3. Is there a deployable antenna that makes the spacecraft larger than 3'x3'x3&#x
312.
by planteen 9y ago
Yeah seems like click bait. They pasted the line drawing from the patent application and didn't even both to try a mockup.
313.
by planteen 9y ago
I do embedded work. I agree CMake is horrible when cross-compiling and runs into trouble. The errors make no sense. It took me days to get OSG cross-compiling. It was a horrible experience. I'd much rather a Makefile where I can overri
314.
by planteen 9y ago
If you shut your eyes and move your hand in front of them, you think you can see the outline of your hand. I used to be a cave trip leader. We'd take people deep in a cave, turn all lights off, and ask them to put their hand in front o
315.
by planteen 9y ago
I used to do VHDL for FPGAs, where you basically have to use state machines. LabView is that way too, being a dataflow language. But I don't know how much LabView I've seen that I would call beautiful. Maybe if one considers spagh
316.
by planteen 9y ago
My guess is the effect isn't very significant. Are there studies showing disease versus pet ownership? People are far more "clean" today than in the past and I wonder how much our high standards for cleanliness make a differe
317.
by planteen 9y ago
There is natural infrasound in the Front Range, caused by winds somewhere in the vicinity of Long's Peak: https://journals.ametsoc.org/doi/abs/10.1175/1520-0450%28197...
318.
by planteen 9y ago
Citation needed. This is listed as a myth in a NPR article about GMOs: https://www.npr.org/sections/thesalt/2012/10/18/163034053/to...
319.
by planteen 9y ago
And then fall in the Reuleaux triangle rabbit hole.
320.
by planteen 9y ago
As much as I dislike MSVC, I'm still not sure that's a fair comparison. I've used cl.exe in large, complex makefiles to build programs that could also change CC and CXX to gcc or clang. And as far as output suppression goes,
321.
by planteen 9y ago
Conformal coating is standard for PCBs going into space. Lead solder (not RoHS) is used in assembly. For commercial BGA packages, companies specialize in de-balling the RoHS balls and replace them with lead balls.
322.
The random walk of cars and their collision probabilities with planets(arxiv.org)
1 points by planteen 9y ago|0 comments
323.
by planteen 9y ago
I know. I'm happy it's winter in Denver now, because the amount of motorcycle traffic is so much less. The noise motorcycles with pipes produce is right up there with emergency sirens.
324.
by planteen 9y ago
No, I haven't, and I am sure it is possible to do reliable real-time with those. It looks like all of those are commercial solutions (no open source). I remember reading a paper about the IBM implementation (I assume that it turned int
325.
by planteen 9y ago
I have never worked anywhere with that policy in the US. I have taken month long vacations at two different companies. I gave months of advance notice and got it cleared before hand. At your company, I would still try to ask for a month off
326.
by planteen 9y ago
> Also, GC is fine for the vast majority of systems programming. Finally, lots and lots of embedded programming doesn't need to be hard real-time. Even soft real-time can be difficult with a GC in my experience. You end up doing all
327.
by planteen 9y ago
Well astrophysicists are asking questions too, so it doesn't seem that information has been disseminated well: https://twitter.com/AscendingNode/status/961086031784235008 I realize deep space collision risk i
328.
by planteen 9y ago
That's true. My point was that interplanetary contamination is a concern that needs to be addressed, even if the probabilities are low. If nothing else, since it is one of the first questions that is going to get asked, including by th
329.
by planteen 9y ago
And yet, it is a very important question that people will always ask first. Exactly how low are the probabilities? This was a major concern with the bankruptcy of Iridium that concerned the President. The insurers at the time wouldn't
330.
by planteen 9y ago
That's interesting none have launched with propulsion yet. I remember talk about the VACCO system when I was doing CubeSats a few years ago but it doesn't look like they are on-orbit yet.

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