Last Sky Commuter For Sale On eBay 189
DeltaV900 writes to alert us to an auction on eBay of the last Sky Commuter concept car. About 7 hours remain in the auction and the top bid at this writing is $55,100. The seller (with some help from posters in the auction forum) makes clear that the thing won't actually fly, and in fact never did. Other Sky Commuters may have hovered. This one traveled around to air shows and trade fairs.
Re:I can remember... (Score:5, Informative)
Flying vehicles are too much of a risk to let them be guided by humans - you have to have some kind of computer controlled system that will mostly operate this thing for you while also keeping track of other vehicles.
There are ideas to bring this kind of design to the road, but they've not matured yet. When we're able to control conventional traffic fully via computer systems, we may start thinking of inventing something flyable. I imagine that, just like with the transition from horses to cars, those flying cars would initially be using conventional roads (perhaps adding another layer on top of them - so we could stack highways instead of ruining the landscape with 6 or 8 lanes of asphalt) and only later have some special 'air-roads' for themselves, when the idea becomes more dominant.
I don't think I'll ever be driving such a thing, but perhaps my kids?
A-- WILL NOT BUY AGAIN (Score:2, Informative)
As a pilot... (Score:0, Informative)
The pilots are very, very useful for when things go wrong.
Anyone who references "Air Crash Investigations" is a dolt. You may as well quote mythbusters.
Re:I can remember... (Score:2, Informative)
Autopilots aren't there to replace the meatware... you find them on larger transport aircraft to take the load off the pilots so they can concentrate on the other stuff, like navigating around storms, dealing with clearances, or working the systems (especially in an emergency), without having to waste some brainpower on "keep the wings level". And all these automated systems you seem to get off to fail a lot more often than you would think. Knowing how to deal with emergencies, and being able to do it, are why airline pilots get paid what they do. Take a look sometime at crash statistics for the military's unmanned aircraft... simle software bugs or communications glitches have caused many crashes. They wouldn't have happened had there been a person on board to override the systems. I realize that pilots can cause accidents too, but they have one advantage an autopilot doesn't: common sense. The autopilot will happily drive you into the heart of a severe storm, or follow a spurious command to lock all your control surfaces at maximum deflection.
Finally, a lot of airplanes don't have autopilots at all. The vast majority of light private aircraft don't; most of those that do don't have anything more complicated than a simple altitude and heading hold. And even in airliners, takeoffs are always flown manually; and unless restricted by weather or airspace, landings and most flight under 10,000 ft is as well. Crews generally only do autolands when they absolutely have to, and even then they keep very close watch in case something goes wrong.
Tell you what: you go ahead and get on a fully automated airplane. I'll stick with human pilots, myself.
Owner builds aircraft mockups. (Score:2, Informative)
Re:Yeah right, your an idiot (Score:3, Informative)
The reason we have pilots in aircraft is for the emergencies most commercial flights the autopilot flies the plane for most of the journey and can usually take off and land as well if required, but the pilots are needed to cope with situations the autopilot was not designed for (but this does not mean they can't be designed for this?)
The trouble with flying cars. (Score:3, Informative)
There are two fundamental problems with flying cars. First, reciprocating engines aren't quite powerful enough, and small turbojets cost too much. Second, they're unstable. Both problems could be solved, yielding an expensive but workable flying car.
The engine is the big problem. People have been trying to downsize jet engines for decades. Small ones can be built, but once you get below small bizjet size, they don't get much cheaper. That's why general aviation is still running on pistons. A flying car in the $2 million range is probably feasible, but the market is limited and the engineering costs are high.
Stability is partly a control system problem and partly an actuator problem. How do you exert attitude control in hover? Adjusting the fan speed of multiple fans is too slow. Adjusting blade pitch cyclically, like a helicopter, requires cramming all the machinery of a helicopter hub into each fan hub. VTOL jet fighters have been successful, sort of. The Harrier diverts about 10% of its jet thrust to attitude jets in hover, which yields quick control, but the Harrier has plenty of jet thrust to play with. The F-35 fighter has a steerable nozzle in the tail, a lift fan in the middle, slats under the fan, pitch nozzles in the wings, roll nozzles in the nose, doors to cover all this gear, and enough computer power to manage it. Even with all that, it's a marginal VTOL craft. The USSR tried several VTOL fighter designs over the years, but none of them worked very well. The Harrier variants are the only real success to date.
The Sky Commuter was an exercise in weight reduction; it weighs about 400 pounds. That's one approach, but it didn't work.