SkyFly - Vertical Takeoff & Landing Ultralight Aircraft
kickstarter.com
kickstarter.com
"Due to aerodynamic effects in the duct within which the propellers rotated, the platform was dynamically stable, even though the pilot and center of gravity of the platform were fairly high up. In testing, the prototypes flew well enough, but the U.S. Army judged them to be impractical as combat vehicles as they were small, limited in speed and only barely flew out of the ground cushion effect."
Seems like it wouldn't be so great for going over mountains and such.
What people seem to overlook is that making a flying car is easy. Making it so that the FCC will allow my mom to fly it and land it in her garage is next to impossible.
If only accredited pilots can buy one the production price won't come down, and if you can only land and take off from an airport as a pilot in an expensive flying device, well then you've invented.... a plane... Congratulations you're competing with Boeing, Gulfstream and Learjet on their own turf - a highly political arena where money and conections count more than anything else.
Here's a link to a company that's beeen claiming that their flying car will go into production next year for the last ten years: http://moller.com/index.php?option=com_content&view=arti...
Consider two scenarios. In scenario 1 I buy a beater car and don't maintain it. What's the worst common scenario that can happen? I end up broken down on the side of the road. In scenario 2 I buy a beater hover car and don't maintain it. What's the worst common scenario that can happen? It falls out of the sky killing all the passengers and possibly people on the ground.
This is why used planes keep their value so well, because every single one of them must be kept up quite well in order to be flight worthy.
In fact, thinking about it, I'm not sure how much time a flying car would save me. Even though I'm half a mile from an airport, and work is only four miles from an airport, the two airports are 12 miles apart. Right now, it takes around 35 minutes to drive. With a flying car, it might take, what? 20 minutes? I suspect any time I saved might be taken up with flight clearance.
"Ironically, it was the Hiller Platform's inherent stability that ultimately killed the project. The problem was that the platform had a tendency to right itself. Going forward depended on the machine's continued lean in the direction of flight, but it constantly wanted to straighten up and this made it almost impossible to maintain a consistent heading"
How do you plan to overcome that shortcoming? Gyroscopes or something?
Also, why does your platform use the slats instead of a cone duct to direct airflow like the original design?
Other videos:
http://www.youtube.com/watch?v=cZmULlkOE3o http://www.youtube.com/watch?v=MwhBWxc0SSM
Says the designer about an unbuilt prototype.
You know the V-22 Osprey is "just" two helicopter motors mounted on pins on the end of a winged prop plane. Freaking simple.
And a rocket motor is just two tanks of propellant pumped through a big blast proof cone.
Dual counter rotating prop has lower efficiency than a single big prop, it just doesn't have a net torque on the overall vehicle. I just can't see a 6' diameter rotor being strong enough to get far off the ground cushion, much less 2x6' with all the turbulence that comes with it.
On the other hand the third video I posted shows a modern miniature version of the original craft. This modern version isn't nearly as stable looking as the original. I can only assume that this is either due to it's size or lack of a duct. My best is on the lack of a duct. That being said, the design for this kickstarter project uses louvres instead of a duct, so I'm wondering if he can achieve the stability of the original Hiller Flying Platform.
-As somebody mentioned, these things can't fly that high. Is it going to be dangerous to try to fly it over tall houses or buildings?
-Even if you can get above street level, is the thrust going to, say, ruin your neighbor's garden? You could have a problem with smaller communities banning these, even if it stays legal.
Now add a dimension.
Scary, right?