Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror

Slashdot videos: Now with more Slashdot!

  • View

  • Discuss

  • Share

We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

×

Comment: Re:is it an engine or a display model? (Score 1) 58

by bkmoore (#49148055) Attached to: Researchers Create World's First 3D-Printed Jet Engines

Even for the more "primitive" 3d printing metal techs, they're just lost wax casting where the original mold is 3d printed. So the results are no worse than any other lost wax cast metal.

The problem with lost-wax and other molded metals is that the fatigue strength is much lower than forged or machined parts. Tolerances are also much looser because the tolerances from each step - wax positive, ceramic negative, poured positive, etc. add up. Fatigue life might not be an issue for a model airplane engine, but it is a safety issue for anything carrying humans.

Comment: Re:New patent strategy (Score 1) 101

by bkmoore (#49130499) Attached to: Amazon Files Patent For Mobile 3D Printing Delivery Trucks

3D printing is still in its infancy, so I will patent the more old school mobile manufactory....!

Sounds like 'ye old renaissance fair on a "truck" pulled by a team of coldbloods and accompanied by pipes and drums. Are pipes and drums patentable if they're 3D printed on a truck? This is so confusing...

Comment: The "Boeing"-rule of thumb (Score 3, Interesting) 252

by bkmoore (#49099621) Attached to: No Tech Bubble Here, Says CNN: "This Time It's Different."
When thinking about tech stocks, I like to use a "Boeing" rule as a measuring stick. The globe.com is valuing Uber at 40 Bn (1/3 of Boeing). Boeing had 90.8 Bn in revenue for 2014. Uber claims to be able to generate 10 Bn "soon" Business Insider, but conservative estimates are closer to 2 Bn. So revenue is somewhere between 1/45 and 1/9 of Boeing. I know the comparison is a bit apples (not the computer) to oranges, but Uber's overvalued IMHO. Especially considering that Uber has almost no physical assets and Uber is a privately held company with no public numbers.

Comment: Re:Follow THe Money (Score 1) 131

by bkmoore (#49081193) Attached to: US May Sell Armed Drones

First the drones are the kindest weapon of war ever invented. Compared to other modes of fighting drones kill far less innocents. For example we can use a drone to take out a car with enemies in the car......

Time for an empathy lesson. Imagine every time you went outside, you heard a lawn-mower sound. It came from a UAV operated via satellite feed from a foreign country on the other side of the earth. That foreign country claims their motivations are honourable, but you have your doubts. Sometimes that UAVs fire missiles or drop laser-guided bombs, usually targeting "terrorists". You don't like the "terrorists", and maybe they murdered your brother and are demanding protection money, so you are glad when they get killed, but every so often the UAV- operators make a mistake and target the wrong guy. You're out of a job because your shop got destroyed by accident and they killed your neighbours children while they were playing soccer behind an old shed. So you decide its safer to stay indoors and hope that it all goes away.

Comment: Re:And I'm sure (Score 1) 131

by bkmoore (#49080677) Attached to: US May Sell Armed Drones

Why bother? We can shoot them down with air-to-air missiles from our planes with little to no effort.

That's how the military-industrial economy works. Case in point, Iraq. We defeated the Iraqi army in 2003 and broke all their toys. We built a new Iraqi Army and supplied them with new weapons. ISIS came and looted most of those weapons. Now we're bombing the weapons we previously supplied. Then we'll sell whomever's left with some more weapons to replace the ones we bombed. Repeat over and over again...

Comment: Re:Easiest way... (Score 1) 267

by bkmoore (#48429641) Attached to: Ask Slashdot: Workaday Software For BSD On the Desktop?

Indeed, I'm very much against the idea of owning a mac.

It actually kind of represents the extreme form of what is driving me away from Linux, a focus on usability and mass appeal over flexibility and choice.

Not much of a Linux expert, but enjoy playing with Slackware from time to time. It hasn't changed too much from an "usability" perspective and puts you in the drivers seat.

Comment: Re:If the cause of the crash... (Score 1) 165

by bkmoore (#48311609) Attached to: Some Virgin Galactic Customers Demand Money Back

...is giving the pilot the full control of the craft (ie, the ability to deploy the tail above rated speed) then they're going to have an interesting balance to strike...

Maybe somebody here knows more about the system architecture of the "feathers" mechanism. From what I've read, the pilot only pulled the lever to unlock the surfaces, but we do not know what caused them to actually deploy. If they were computer controlled, it could be possible that a computer or sensor failure caused them to deploy early.

Usage: fortune -P [] -a [xsz] [Q: [file]] [rKe9] -v6[+] dataspec ... inputdir

Working...