Interesting, I did not know that!
That's what happened to me...
Readit NewsrwmurrayVT commented on In a Way, 3D Scanning Is over a Century Old hackaday.com/2022/10/02/i... · Posted by u/helsinkiandrew
Great quick read, tldr they took a bunch of bullet time photos in a circle around someone, made a bunch of vertical wood cutouts of the silhouettes and then wedged them together vertically / radially and filled the gaps with clay. The freaky picture helps.
Speaking of this does ANYONE have a suggestion for a 3D scanning service / app that could capture reasonable detail on a warhammer / hotwheel sized model?
I've asked around and gotten the "don't bother just remake it in blender" response pretty consistently... but I don't wana' (ie its not realistic). Somebody please help if you can.
Or I guess I could get a bunch of cameras and sheets of wood...
Mail it to me and I will with 9D LADAR. The point cloud data will include color data on the points. Fill out a contact form on our website asking for Robert.
rwmurrayVT commented on In a Way, 3D Scanning Is over a Century Old hackaday.com/2022/10/02/i... · Posted by u/helsinkiandrew
> Also a reminder that the 3D scanning is still unchanged after 1 century.
That is simply false. We have interactive games based on cheap costumer 3d scanners. [1] We have 3d scanners in our pockets. [2] We have 3d scanners which can scan millions of points per second from the environment for hundreds of meters of distance. [3]
But yeah, if we ignore all the things which changed, then it turns out everything is "still unchanged".
1: https://en.wikipedia.org/wiki/Kinect 2: https://www.techradar.com/news/what-is-a-lidar-scanner-the-i... 3: https://www.mapix.com/wp-content/uploads/2018/07/63-9378_Rev...
Our newest product is a very advanced 3D Scanner[1]. Photogrammetry, structured light scanning, phase shift laser radar, and now non-contact via an interferometry. 3D Scanning is alive and well with various methods.
rwmurrayVT commented on Lucid recalls all of its 2022 Air EVs engadget.com/lucid-issues... · Posted by u/lxm
I've been a Tesla owner for a couple of years and I am anxious to sell it. I no longer want to be associated with that company.
I've had my eyes on the Lucid Air Touring as my next car, but stuff like this doesn't instill confidence. The absolute disaster that is Tesla's build quality and servicing is one of the reasons I'm switching in the first place!
The whole EV market is a disaster right now. If you want an EV from a "mainstream" manufacturer, be prepared to pay enormous dealer markups and be bullied into upgrades.
I hate it.
The company I worked for just released a new non-contact scanner with accuracy similar to a laser tracker. The only potential automotive companies that have expressed interest so far are EV only.
rwmurrayVT commented on Top navy admiral wants rust-free ships gcaptain.com/rusting-flee... · Posted by u/tomohawk
Manning problems have existed for a decade, if not more. The Navy holds the sad record of being the worst managed branch of service. Steep budget cuts in the 1990s and again during sequestration have had severe effects that the Navy hasn't yet recovered from. But I don't know whether that's the cause of the problem. The Navy is an especially unique branch given that it's the only service that revolves around a relatively small number of very large, very expensive assets. The Army doesn't revolve around its tanks, and the Air Force, while it revolves around planes, there are a lot more planes in the Air Force than ships in the Navy. Congress is not without blame for the Navy's problems either, apart from the budget cuts. Congress has the last word on all programs and procurement. The Littoral Combat Ships should never have seen the light of day for instance, but Congress pushed the program through, and now the ships are useless (and still being built!)
But there is hope on the horizon. The submarine construction programs (Virginia SSNs and Columbia SSBNs) are proceeding smoothly, as are the Flight III destroyers. DDG(X), the future replacement of the Arleigh-Burke class destroyers and Ticonderoga-class cruisers, is in development, and the first Constellation-class frigates will soon be laid down.
There is misery and there is hope.
The Navy has failed to accomplish the modpro packages on the current CGs & LSD, including Gettysburg, Vicksburg, and Tortuga. Those three I have personally been involved with in many ways. The 5XXX and structural work on the CG program has been wildly underestimated. The money for Tortuga was never there and as she lay idle in the shipyard problems grew. They are not simply east coast/BAE issues either. The issues repeat themselves here on the west coast at Vigor. It was a huge mistake to leave behind cost+ and switch to FFP. There is too much time lost to pointless contract fighting.
There is hope on the horizon with new subs and DDGx and FFG. Time will tell if the new build construction yields a new DDG1000/LCS or a workhorse like the earlier DDG flights.
As for corrosion it is a necessary evil. Too many armchair metallurgists point to various alloys as a solution. The ocean is cold, salty, and miserable. The planning yards, repair yards, and Navy are full of extremely bright and hardworking folks. It takes time and money to fight rust at sea and in port.
There's a big issue with manning on the civilian and Navy side. At the end of the day there are few people in my generation lining up to enlist or to do body-damaging labor. I can't say I blame them.. I became and engineer and then joined program management. Few in the yards want the same for their children as they had in their life. Those who are left are primarily 30+ years of experience or 1-5 years of experience looking to get out.
rwmurrayVT commented on Top navy admiral wants rust-free ships gcaptain.com/rusting-flee... · Posted by u/tomohawk
Stainless doesn’t really hold up in saltwater, with the exception of a few grades. The material properties (toughness, ductility, brittleness, weldability) can also be significantly different than non stainless.
Corten can work in less aggressive environments, but it has been known to fail to provide the expected protection in places with more acidic rain than was expected. Salt water is really aggressive.
Hot dip galvanizing does work, and is common for small boats, dock fittings, and other smaller items. There are also likely sacrificial anodes on the ship made of zinc.
There are many sacrificial zincs on ships, including in tanks.
rwmurrayVT commented on What happened to Russias Air Force? U.S. officials, experts stumped reuters.com/world/europe/... · Posted by u/mrep
I talked to a guy a few weeks ago who worked for a company that developed a guidance system before GPS that used stars like a sextant to navigate.
Pretty crazy to think about.
It is also common in shiprepair to use the stars for aligning equipment with a theodolite like device.
rwmurrayVT commented on Navy failures destroyed the Bonhomme Richard gcaptain.com/fire-fire-fi... · Posted by u/smitty1e
The density of these incidents seems to be increasing, ships run by untrained crew crashing into other vehicles, steered by software that does not work.
Now the leadership that created the circumstances and conditions for this mismanagement to flourish, rushes to fix a problem they allowed to create?
There's a major difference between repair/maintenance fires and the incidences afloat. Shipyard fires are being held to the highest standards ever since Oscar Austin, the submarine, and now LHD.
rwmurrayVT commented on Navy failures destroyed the Bonhomme Richard gcaptain.com/fire-fire-fi... · Posted by u/smitty1e
At the end of the day the responsibility rest on the Captain. It is their job to see that those under them are well trained, retrained, and reenforced in that training as a daily operational objective. Every good CO I have ever met when taking over a new station will review in detail the training and readiness status of their command as job 1, and not just review on paper but execute all the drills and observe the results. This is fundamental and is taught in detail in command school. Their should be a full set of court-martial for this failure at the command level.
Partially correct. In the shipyard the RMC can override the CO in several situations.
Are you sure? People often claim this, but don't follow through. There's even an expression, "fair weather fan".
It's true some people seem to support some political parties beyond all reason. But to keep the support through personal hardship is different, and hasn't been tested as often. Worldwide, nothing particular to US.
That story applies to both sides of the aisle in US Government. The battle is for the 1/3 that doesn't vote and the sliver of folks who switch back and forth.