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PIATLAS
MY FLYING CAR

The car would have 4 motorbike wheels with suspension. It would be a single seat-er like a go-cart and would be roadworthy to drive on highways and roads.

It would have front wheel steering when traveling on a road. The propulsion system would be a counter-rotational fan at the rear of the car between two tail fins. The tail fins would be joined together with an aerofoil to give it up and down control when flying. The wing rim would be a curved edge like on an aircraft wing but that's all.

When driving on the road the wings would be swept back and wouldn't stick out at all on the roadworthy vehicle. When taking of the wing-rim would sweep out to form a delta shape flying wing made from plastic like Kevlar and would open up like an umbrella Steering would be mechanical but based on center of gravity of the single seat-er. Essentially it would be a fan based go-cart that transforms into a hang-glider with fan propulsion.

The wheels wouldn't have a motor connected but would have motorbike suspension and brakes. The engine powering the counter-spinning fan would be a high performance motorbike engine.

When the plane lands the wings would sweep in like an umbrella folding up the plastic Kevlar properly and allow the car to continue to it's destination on land.

Are there any motor-bike companies that would like to build it with me? then PM me.
PIATLAS
The plastic wings could unroll from a roller as the craft spreads its wings. Pneumatics would control the center of gravity. The flying care could be flown unmanned by remote control with telemetry of compass reading, speed, and angle of wings to the ground. Followed up with video camera view from various angles until perfected with computer simulations.
adoucette
What's the point?

All you have is the worst of both worlds.

A sucky flying machine and a pitiful car.

With no real advantage, because, hauling the wing, rudder and elevator mechanism around will make your milage suck and hauling the steering, lighting and propeller protection (can't have an open prop on a car) around on the plane won't improve its efficiency either.

Finally, with the kind of wingspan you need to get the flying car into the air (The delta airfoil you describe won't be great) you will need sufficient wingspan that you can't use a highway (safely) which means you still need to fly to and from airports.

So, the better solution, is simply when you land at the airport, rent a car.

Arthur
PIATLAS
The point is it can use motorbike technology. Be easily serviced. You can drive it around the paddocks like a four wheeled motorbike and fly it to your friends country farm.

It would be mass produced, as an alternate `of the road vehicle recreational vehicle' and it would be safer than a motorized hang-glider. And you could drive it at 100KM an hour on the highway.

And Adoucette, if you think it would look sucky then your allow your imagination to run free overnight. Because my impression of it would look very good.
adoucette
As a recreational vehicle, maybe (though so far all attempts at this have failed to produce a vehicle that sold in any numbers)

As a useful vehicle?

Unlikely

Airplanes, to work well have to be very LIGHT and STREAMLINED.

Once you start having to hang other requirements on the plane your efficiency is only going to go down.

But Ok lets assume we will accept a less than ideal plane.

Now look what hauling a set of wings, elevators and a rudder does to what is essentially a motorbike?

Certainly they have NO USE when on the ground, so again, you are hauling a lot of material around for nothing.

Worse, hauling these items around subjects them to damage which because of their light weight requirement also makes them easily damaged when out of their normal operating enviorment (the sky)

Then there is the propulsion issue.

No one will be happy sitting behind you when you gun that motor.

Propellers work ok for planes.

The SUCK big time for use on the ground.

Arthur
PIATLAS
The flying car would be slender perhaps as long as 3 motorbikes. When taking of the roller assembly of plastic wings and titanium-aluminum wing rim would be raised (like the inverse of a planes nose wheel) up. Then the wing rims would spread like a Moths wings unrolling the plastic from the spring loaded tapered spools. Between the roller assembly there would be aerofoils a a strong center of mass pivot. The Flying car would pneumatically be able to angle the angular tilt of the wing the same way that a helicopter can angle its spinning propeller however of-course the delta flying plastic wing wouldn't be spinning. Pneumatics like power steering in a car would tilt the wing and thus shift the center of gravity allowing it high maneuverability. It could be possible to have small propellers between the rollers at the center of gravity to increase the vacuum above the plastic wing at low speeds and also a a precaution to make sure it stays the right way up in a sudden burst of wind, it has to be able to recover. The plastic can be transparent in some sections and artistically streamline-multicolored in other sections.
yor_on
I want the combined air/hovercraft in stead. Let's build roads with a magnetic stripe that it can 'lock' to when following such boring paths. Is will be somewhat wingshaped and able to lift to ahhh fifty meters ca.. (should it go higher?)

Or my own Zeppelin with the newest electrical technology, solar cells coated on the hull, also in some rigid shell formed for maximum stability while flying/floating in that sea of air. Who wouldn't want to be a mariner of the blue younder :)
PIATLAS
Adoucette, at-least my craft is roadworthy on the highway. How would you transport your recreational ultralight to a paddock/farm/airport? The same way you would transport your recreational speedboat to the beach? On a trailer towed by your RUV.
paul h
Just one question:
What condition do you think that the paint job on the car behind this propeller driven car / plane would be given how much sand is on the roads?
PIATLAS
Paul h, My Fly-Car would give tail-gators a good blow-job in cooling down the heat in their steamy radiators. lol
paul h
I was talking about sandblasting the paint off of the car behind you. not to mention the pitted windshield.
PIATLAS
Estimation of the FlyCars dimensions depend on the size of the delta wing when it spreads out like Moth-wings and the amount of lift it can generate. The heaviest items in the FlyCar would be the motorbike motor and the pneumatic power-steering like `delta wing tilting mechanics'. The remaining items can be made from very lightweight materials. Lift would increase with speed however speed depends on the weight/size of the motor and that affects the required spread-out wing-span.
PIATLAS
QUOTE (paul h+Mar 17 2008, 05:38 PM)
I was talking about sandblasting the paint off of the car behind you. not to mention the pitted windshield.

It could flash tail lights like a cop car, that will make you keep your distance. I suppose the answer would be to flick a switch that would disconnect the fan and engage rear wheel traction drive like a motor bike. There! that would be fun power.
BigDumbWeirdo
If we ignore all the principles of aerodynamics, engineering and murphey's law, then yeah, this is a great idea.
I wonder why no-one ever thought of it before...


Oh wait, it's the principles of aerodynamics, engineering and murphey's law, that's right.

Do you want to build a flying car? Start with polymer manufacturing, design a material as strong as steel but lighter than cardboard, then build the whole thing out of that.
paul h
>Do you want to build a flying car? Start with polymer manufacturing, design a material as strong as steel but lighter than cardboard, then build the whole thing out of that


Then Pray that you don't get in the way of a semi-truck.
adoucette
QUOTE (paul h+Mar 17 2008, 12:38 PM)
I was talking about sandblasting the paint off of the car behind you. not to mention the pitted windshield.

Even in the few different ways this has been done, the plane is kept out of the propwash, and as you suggest, for good reason.

http://inventorspot.com/files/images/Flyin...sist_custom.jpg

Arthur
vkamath
There are plenty of small airplanes. The problem is not building a small airplane, the problem is the length of the run way it would require for take-off. Another problem is safety, small single seater planes are not too safe, a strong wind can blow them towards buildings

Helicopters were originally created for solving these problems and intended for general public usage But they could not be built cheap enough for the general public.

Edit: word correction. Last sentence was intended to be "could not be"
PIATLAS
QUOTE (paul h+Mar 17 2008, 06:33 PM)
Then Pray that you don't get in the way of a semi-truck.

I pray i don't get in the way of a Mac truck regardless of whatever car I'm driving. They speed 20km above the speed limit as soon as they are on the open highway outside of a built up area. Remember the film `DUEL'
adoucette
QUOTE (vkamath+Mar 17 2008, 02:14 PM)
There are plenty of small airplanes. The problem is not building a small airplane, the problem is the length of the run way it would require for take-off. Another problem is safety, small single seater planes are not too safe, a strong wind can blow them towards buildings

vkamath
QUOTE (adoucette+Mar 17 2008, 07:37 PM)
????

http://www.metacafe.com/watch/456379/short..._demonstration/

http://www.youtube.com/watch?v=OWDEYpqS0yw

Arthur

I meant for mass usage instead of cars. These planes cannot take off from the amount space most people have outside their homes.
adoucette
QUOTE (vkamath+Mar 17 2008, 02:44 PM)
I meant for mass usage instead of cars. These planes cannot take off from the amount space most people have outside their homes.

If you were talking about the various car-plane combinations, then I totally agree, they have all been poor cars and usually even worse planes.

Arthur
Sapo
Imagine a Frank Herbert Ornithopter, made with materials and engineering courtesy of Scaled Composites. Then, maybe...
PIATLAS
The FlyCar has two spools with the plastic wound around them. The Titanium-Aluminum wing-rims are swung back when driving. They swing out when taking off. The FLY car is a four wheeled motorbike with a fan and an overhead roll-up delta wing that uses mini-helicopter-tech to tilt the delta wing that looks like a hang-glider wing.

There have been recent innovations in wheel design to make them lighter with them being tube-less/airless steel mesh reinforced tread surrounding spokes. Strong enough to run over a small land mine and still work.

Everything that doesn't have to be steel like high-speed moving parts can be made from much lighter Titanium-Aluminum

Everyone is thinking high powered Kawasaki motorbikes. However smaller flyable versions could be based on engine parts from a 250cc trail bike.

The problem is that when the delta hang-glider wing sweeps back with the plastic winding back on the two spools then the overhead assembly will be longer than the undercarriage that drives on the road. The delta wing has to be smaller if only there was some mechanical way to vacuum above the curve of the wing to give it more lift with less area.

What wing area would be required to lift a clean 300kg (That figure includes the pilot)?
dakfe09
Intresting, there was a new flying car in the paper the other day. Seems they're still trying to develop the technology to a reliable mass marketing degree.

Ill see if i can find the link.

RobDegraves
adoucette

Note that the planes you show are taking off with a decent wind blowing towards them (you can see the wind sock in the background of a few shots). If the wind was from the rear or sides, it would be a longer take off.

Also keep in mind that for a mass market, most pilots are not as good as these guys. It's easy to err significantly when the wind is strong and coming from a side angle. I have flown a number of small planes but I would hate to do so in heavy traffic or to take off from my street and dodge tree, wires and poles.
dakfe09
Horizontal lift would play a major part?

I recall a prototype around 7 years ago that used something like 8-10 mazda rotary engines with fans to generate enough lift to take off and once up several of them would spin 90 degrees to then provide forward motion as well.

I think this failed ultimately as the fuel consumption of so many 13b rotaries was staggering.. lol

rolleyes.gif


anything new in the pipeline?
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