buildsjets

For many many years I have kept a design file on a subwoofer which would be far larger than this. 3kW is jack crap. The subwoofer I have in the trunk of my daily driver is almost 1kW. I’m thinking more like 95 KVA, or 76kW at an assumed 0.8 power factor. 3” cone displacement and 18,000 LbF available to drive the cone. Low pass filtered at 2000 hz. I am entertaining all offers from our resident billionaires to quit my job at the jet building factory to create such a device. We can drag it to Burning Man. Our first capex will be this big ol electrodynamic shaker head.

https://www.udco.com/products/electrodynamic-shaker-systems/...

Courtesy of another poster down-thread.

https://ethz.ch/content/dam/ethz/special-interest/chab/organ...

DMSO is a solvent that is is absorbed directly through the skin. Jello Biafra was wrong though, if you mix it with lemon juice and pour it on your hand, you will not sense the taste of lemons in your mouth. You will taste garlic. Try it and see.

https://genius.com/Dead-kennedys-dmso-lyrics

I’m not sure what happens when you mix it with LSD. Again, try it and see.

Yes, they are leaving it in the soil. Prove me wrong with data. It says nothing at all about extracting the waste benzene they created from the soil, neither in the linked article nor in the complete paper, which i did read. The paper specifically describes an in-situ process. If it were economically beneficial to extract benzene from contaminated soil for industrial use, we would already be doing that with the tens of thousands of existing benzene contaminated sites, not creating more of them.

Benzene is quite toxic. The EPA classifies benzene as a known human carcinogen for all routes of exposure. And their method leaves it buried it in the soil. It is not a valuable industrial chemical when it is in the soil, it is a pollutant.

Wait up. They propose to convert DDT trapped in the soil to benzene trapped in the soil? Is not benzene also a toxic and persistent soil pollutant (it is) where the typical remediation is to excavate the bad soil and landfill it? (it is)

https://www.waterboards.ca.gov/water_issues/programs/gama/do...

There was an old lady who swallowed a fly, she didn’t know why.

Howard Hughes also did impressive things. Built amazingly advanced aircraft for the era. Started a Hollywood movie studio. Owned one of the world’s largest airlines. His company (after his death of course) provided satellite IP links for decades before Elon showed up with a cheaper option.

He died as an isolated insane hermit wearing kleenex boxes as shoes and collecting his urine in mason jars.

I think that we have already seen peak Elon, and the only thing we will see in the future is his continued descent into madness, which I expect will be aided and abetted by his business associates, just as Howard Huges’s illness was.

Denisovans, clearly.

So pastebin for binaries?

He realized it. But you did not realize that.

Social media is yet another strange game where the only winning move is not to play.

I had to accomplish pretty much the same exact task circa 1999, but in Aldus Pagemaker using Postscript.

My first job out of college was a 6 month contact at a fairly small industrial control manufacturer that had been purchased by a larger conglomerate. All of their engineering documentation needed to be converted to the new company’s format.

The old company had devised a scheme whereby a wire harness could be completely described by the part number, which encoded the wire size, color, length, and termination. The new company wanted a detail drawing for each wire, with thousands in the database.

I made a library of reusable glyphs that could be stored in Pagemaker layers, and connected with postscript generated lines, and a script to iterate through the part number database and generate drawings.

Lead rapidly oxidizes and tarnishes, and is reactive with many chemicals, as any person who has actually worked with it can attest to.

First, the engine itself is certified under 14 CFR Part 33, but the engine cowling is certified under 14 CFR Part 25, which makes it an airframe part, not an engine part.

Boeing (Spirit division) does make the engine cowling for the 777-200, which is what separated from the aircraft and caused the fire on the ground. Even in the case of a catastrophic failure of the engine, the cowling and all of it's parts are required by regulation to remain attached to the aircraft.

There was a previous incident a few years ago also on a Pratt-powered 777-200 where an engine failure cascaded into a much more serious cowling failure. Here's an article on that previous incident. I'm unable to find a source on whether the design changes discussed were ever implemented.

https://simpleflying.com/boeing-777-engine-cover-change/

The FAA in the past several years has had a particular focus on engine cowling components departing the aircraft and causing secondary damage, the most critical example being the 737 fan cowling that separated from the engine, impacted the fuselage, broke a window, and caused a passenger to be sucked out and killed.

https://en.wikipedia.org/wiki/Southwest_Airlines_Flight_1380

https://www.regulations.gov/document/FAA-2023-2234-0001

When the stories about Roundup started floating around, I switched to 30% strength vinegar with a squirt of dish soap in it. It kills weeds and undesired plants off just as quickly and effectively as Roundup did, but obviously it does not prevent new seeds from sprouting. It is indiscriminate, whereas Roundup selectively targets broad-leafed plants, so you want to avoid getting it on grass. I use a big tarp to mask off the grass if I am using it heavily along the lawn borders. It's very effective for things like borders, gravel paths, stuff like that.

Also, instead of smelling like a chemical factory, your yard will smell like salad dressing for a day or so.

Alan Moore knows the score. I contribute this.

https://thejournalix.com/celebrating-the-work-of-alan-moore-...

Eat one small rock per day as important source of vitamins and minerals critical to digestive health.

I mean, I agree MAHA sucks, and Kennedy is a fool and and loser, but the PDF is only hosted at the NIH. It was published in a journal owned by the Korean Society for Preventive Medicine, and the researcher is from Attikon University Hospital, University of Athens School of Medicine, Athens, Greece. And it was published WAAAAAAAY back in 2017.

So do your research or something.

Unfortunately, they de-commissioned the airway beacon system as an official navaid and stopped maintenance for the ground markers during the pandemic. Most are still there, but unlighted and unmaintained. A limited few are being operated by a historical society.

https://www.mdt.mt.gov/aviation/beacons.aspx

The LAA classified the proposed modification pf the overall fuel system as minor based on the owner’s description of it, and approved it on that basis. But the owner lied and did not disclose the fact that the induction elbow was modified at all or that it was 3D printed. The report does not discuss any required inspection by a person authorized by the LAA prior to returning the aircraft to service. So it seems like the LAA modification process is a trust-don’t-verify policy.

Flea markets at US airshows are not under FAA jurisdiction.

I have attended said airshow for decades and occasionally buy stuff in the flea market myself. Old used scrapyard parts, next to some inventor’s homemade jet engine, next to tons of raw materials of unknown provenance, next to ginsu knives and miracle frying pans. Here’s what it looks like on video. Wow, I missed those hand grenades for only $10 each, what a bargain.

https://youtu.be/kKZ8Omj5cNA?si=bMQGS3VxN6ljyW19

https://www.aero-news.net/index.cfm?do=main.textpost&id=cf1c...

Japanese cars can be amazingly reliable. My wife drives a 2003 Toyota Celica (a sporty Corolla) and I drive a 2003 Audi A4. They both have about the same miles, around 150k. The A4 has had thousands and thousands of dollars worth things fail the years. There is a lot of extra Audi tech stuff to break of course, but even common things like oil seals and water pumps and wheel bearings just seem to require more frequent maintenance than our Japanese cars.

The Toyota, since new, has needed 2 sets of tires and 1 set of brake pads, both normal wear-out items. The air conditioner relay has failed twice, at a cost of ~$15 to replace. The newer part number has a higher amp capacity and seems to be holding up fine since then. The driver side door lock actuator failed once.

It almost gets it's preventative maintenance missed, because nothing ever breaks to jog your mind that the car needs to be maintained.

This is one of the most depressing things I have ever read on Hacker News. You claim to have become so de-actualized as a human being that you cannot fulfill the most basic items of Maslow’s Hierarchy of Needs (food, health, personal security, shelter, transportation) without the aid of an LLM.

Whatever. It got sent to the crusher and we never bought an American-made car ever again.

If you were my dad, the V6 in your Gutless Supreme was the normally aspirated diesel, clocking 85 horsepower, and required new head gaskets approx every 20,000 miles.

But at least the rich luxury of the crushed orange velour interior could keep you comfortable while you waited for the tow truck.

He is not on a boat.

A truly fair coin would never land heads or tails. It would land standing on it's edge, every single time.

Here are Raytheon part markings on the tail kit of a GBU-12 Paveway glide bomb that Raytheon sold to a corrupt third word dictator, who used that weapon to murder the attendees of an innocent wedding in a country he was feuding with.

https://www.bellingcat.com/news/middle-east/2018/04/27/ameri...

I know the part number of every airplane part I have ever designed by heart, and I would be horrified to see those part numbers in the news as evidence of a mass murder.

So, what is your moral justification for defending one of the world’s largest and despised weapons manufacturers? Are you paid to do it or is it just pro-bono work?

Encoded as text, but converted to MS Comic Sans to introduce some OCR errors.

The kids are gonna be alright. King Gizzard and the Lizard Wizard archives all of their concert tapings on archive.org.

https://archive.org/details/KingGizzardAndTheLizardWizard