Slashdot Mirror
A Flying Leap for Cars?
pillageplunder writes "Businessweek has a story about flying cars and how they could be an actual viable thing in less than 10 years. First flying taxis, then, like the Jetsons, personal flying cars. Several are already on the board, with Honda and Toyota already having prototypes of small flying devices. Even General Electric is getting in on the deal, developing a small jet engine for Honda. So...would you buy one?"
Moller Skycars
They're not quite for sale yet. They have built one prototype for testing but won't start extensive testing until a second one is near completion. They've been moving pretty slow over the past several years but have been making steady progress. They are taking preorders, but nothing will ship for several years at least.
Mike Scanlon
I'm an environmental nut, and I'm not sure how the economy for small planes is-- but large airliners get something like 90 mpg per passenger, more efficient per person than my civic with an extra passenger.
Economy of scale plays a big part, by cramming lots of people in. But don't lump all air travel into the "automatically inefficient" category-- it was more efficient than I expected, too.
Current planes are like ancient DOS systems, where you have to type in huge commands, and any mistake is catastrophic.
Bullocks. A modern 777 will keep itself in the air, with or without you. It's airframe is designed such that it WANTS to fly. Try executing a deadly maneuver in X-Plane sometime, using nothing to correct your flight except thrust. The 777 will right itself without much problem. It will probably even climb until it reaches equilibrium.
You don't worry about stabilization, the computer does.
Airframes are usually *designed* to be stable. Especially something like a CS-150 with the wing tips for stabilization. Your real problems with any flight are:
1. Preventing midair collisions.
2. Getting on and off the ground.
The first will become a BIG problem if everyone gets their "flying car". The second one is a big problem, period. Getting off the ground usually isn't so big of a problem as long as you give yourself as much room as possible. Getting on the ground IS a big problem.
When you're flying through the air, your path is determined by the gasses through which you're passing. This can cause your path to skew, and can even result in some roll. The problem is that the ground is NOT moving. Thus you have to attempt to compensate. If you see a plane coming that looks like it's crooked, the pilot is probably NOT drunk. He's compensating. Yet even the best pilots occasionally have a hard landing. Go shopping for a plane sometime, and you'll notice that quite a few of them talk about replacing or repairing the firewall after a hard landing.
Much better to have something where you tell it via some 3D joystic, "Go up, down, left, right, forward, backward", end of story.
You can't go left or right. This isn't a car. You have to roll and execute a banking maneuver. A computer can simplify this, but you can't change the physics of flight. (Again, with "flight" defined as "obtaining lift by passing through the atmosphere" A hovercraft can obviously thrust in any direction it damn well pleases.)
You don't worry about stabilization, the computer does.
Keep in mind that you can only stabilize the craft so much. If it's light, it WILL bounce on thermals and downdrafts. There's very little the computer can do about this other than to make course corrections. The last thing we need is some guy freaking out at a thermal, accidently rolling his plane, getting disoriented, and taking her into the ground.
Javascript + Nintendo DSi = DSiCade