Slashdot is powered by your submissions, so send in your scoop

 



Forgot your password?
typodupeerror
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 Internet speed test! ×

Comment Re:It is so unfair. (Score 1) 358

It means that it's a place that I usually fly over to get to one of the two more civilized places in the US. There's really nothing in the middle of the US except for Chicago and a few sized-cities. There's little culture, economy, or population to speak of.

I grew up in flyover territory, but have lived on both coasts, as well as in Chicago.

The poster is correct. The mid-west is a barren landscape as far as culture goes. Even in the cities.

Comment Re:Except (Score 1) 358

Oak Ridge National Laboratory in TN receives federal money for an employee working offsite CA. TN gets dinged for the receiving tax dollars. CA gets to claim the employees federal taxes as paid to the government.

You have no idea how things work.

No ORNL employee would be working off-site in CA. They might go to a conference for a few days each year, but that's about it. ORNL has facilities, and ORNL staff use and maintain them. In Tennessee.

Comment Re:Aerodynamics don't look right (Score 1) 178

You want high presure (relatively) below the wing, and low pressure above the wing.
With impellers blowing/sucking air over the upper surface this is achived.

So the airfoil shape of the long, narrow "hat" on the main-wing impellers is just for decoration? Or, effectively close to it, as pressure underneath them will have a 'seagull'-like shape in lift versus distance along the axial direction of the craft? (That is, the nacelles have v. low pressure in front, and v. high pressure behind, so an airfoil on top is a waste of material. No?)

Comment Quit knocking BASIC, guys! (Score 1) 630

If you were willing to dig into the obscure commands, which I was, you'd have found it very powerful. When I say dig, I mean the specs of your hardware rig, too. My first was BASIC – 1st on an Apple IIe, and later on an IBM PCjr.

Using just BASIC, I was able to write polyphonic music, cartoons, games, multiple-screen programs, and even a Photoshop-like drawing program (in 1987) that let you save and re-open files later for more editing. Last, I almost constructed a robotic CD-player, with playlists being columns checked or not, but then along came college.

BASIC was powerful if you were willing to really dig deep into the manual. Of course, once things came to data structures, you were basically out-of-luck.

Comment Re:You're the dumbass (Score 1) 178

Oh and your supporting argument for regulatory capture is batshit insane. "The FAA would require so many ...- heavy parts)" but you claim that's regulatory capture from the airlines that are desperate to reduce weight to improve fuel efficiency.

If I were an airline, I would want this up-start competitor to be saddled with as much weight as possible. Otherwise, they could be competition for me, the airline, which has the FAA in its pocket.

Comment Re:Wrong comparison? (Score 1) 178

In that case, would the lift from the airframe moving forward would be much more than an equivalent helicopter and thus the range would be much better?

... This issue could be somewhat fixed by changing the forward ducted fan assembly into a real canard as in the concept animation, but with all the junk attached it would be a contender for world's least efficient canard wing, and fragile to boot.

Just add plain airfoil canards on the outer ends of the forward nacelles and you will have an aircraft with fully functional canards.

Comment Aerodynamics don't look right (Score 3, Interesting) 178

IAAEngineer. On the Lilium website, the images show the "flight mode" having all of the impellers on the top of the wings, instead of the bottom. They are all sitting on the portion of the wing where aerodynamic lift is generated. There's a wing-surface on top of the nacelles, but the design still looks like it would have negative lift. Anyone who knows how a wing generates lift will understand.

The impellers, necessarily pushing air through faster than the vehicle is traveling, would create a low-pressure zone right in front of them, where flowing air is supposed to be compressed. It's the lower air-pressure over the back of a wing that generates lift. The nacelles are sitting right in the way.

Or does their design position the front-face of the impellers right in that spot. They would have a lower relative air pressure just in front of them, of course. It's hard to tell from the few images the exact positioning, but can an Aeronautical Engineer chime in?

Comment FAA will wreck it. (Score 1) 178

This thing had better fly at less than 500 ft in altitude, to avoid ever entering FAA-controlled airspace & corridors.

The FAA would require so many over-engineered (high engineering margins=heavy parts) and triply redundant systems that it would be too heavy to fly anywhere with controlled airspace (cities), once the FAA got done bulking it up.

FYI, the FAA long ago taken over by regulatory capture from the airline and aircraft industries. The company in the article would probably never be able to get all of the proper approvals because the in-place air-transport players would use the FAA like a bludgeon.

Comment Re:Non-starter 'flying car' (Score 1) 178

This flying car won't fit in my garage, won't travel down the highway (or any road for that matter), won't land at the grocery store and pick up milk.

It only works if you live at an airport and your house backs up to the runway.

Unfortunately, this is going to be like an autonomous taxi. We probably won't be able to get one.

I've come to the conclusion, finally, that few-passenger air transport like this or flying cars must be entirely computer-controlled. Humans are idiots. Plus, the extra weight of a steering console would eat into range. GPS-based point-to-point, with landing pads sprinkled throughout a city, is the only sane way to go. And it's looking more viable with this aircraft.

Slashdot Top Deals

"'Tis true, 'tis pity, and pity 'tis 'tis true." -- Poloniouius, in Willie the Shake's _Hamlet, Prince of Darkness_

Working...