I never should've taken the freighter. Should've gone by clipper.

Yes, it must be a flying machine. It's got, um, propellers.

And then finally, if you spin opposite pairs of rotors faster than the other pair, then the robot yaws about the vertical axis.

If this plane is imaginary, then so are those engines and so are those props.

Where's the propellers?

So it has four rotors.

So in this picture you see that rotor four is spinning faster and rotor two is spinning slower.

Cockpit, propeller, engine.

If you spin these rotors at the same speed, the robot hovers.

In a helicopter you feel and it's still a remarkable sensation you feel like you're being hauled up from above by a vibrating crane.

If you increase the speed of each of these rotors, then the robot flies up, it accelerates up.

And the other way around, if you increase the speed of rotor three and decrease the speed of rotor one, then the robot pitches forward.

You're not powering the propeller, you're powering the wheels.

So these are helicopters with four rotors and they're roughly a meter or so in scale and weigh several pounds.

And despite the aerodynamic interactions of these propeller blades, they're able to maintain stable flight.

As a youngster, I was very interested in model airplanes, ornithopters, autogyros, helicopters, gliders, power planes, indoor models, outdoor models, everything, which I just thought was a lot of fun, and wondered why most other people didn't share my same enthusiasm with them.

But if my theory is for the birds and those props are real, make sure you notify my wife.

Currently stationed in the main hangar at the airforce base are two Mi 24V helicopters without the blades for their main rotor and one functioning Mi 24P with blades (registration TU VMO).

Paul MacCready If we could have the second video, the one minute, put in as quickly as you can, which this will show the Pathfinder airplane in some flights this past year in Hawaii, and will show a sequence of some of the beauty behind it after it had just flown to 71,530 feet higher than any propeller airplane has ever flown.

And then, navy pilot training, and, after college, I got into sailplane flying, power plane flying, and considered the sailplanes as a sort of hobby and fun, but got tangled up with some great professor types, who convinced me and everybody else in the field that this was a good way to get into really deep science.

There's a gyroscope in it.

Helix

The Spiral

Spiral

Spiral1

Spiral2

Complex number

Spiral number

Helix

Spiral

Squiral

Monkey wrench? Oh.

That's nothing new that's a propeller clock that's the rims that you can buy for your car.

And they've already found that by being more intelligent about better propeller design, you can reduce that noise by 90 percent.

Squiral

Toxic spirals

Helix 2

Helix 3

Helix 4

Handedness

Spiral Shape

Change spiral

A spiral shape

So an on board processor essentially looks at what motions need to be executed and combines these motions and figures out what commands to send to the motors 600 times a second.

The C 130 and the propeller aircraft violated the national airspace of the Republic of Cyprus, flying over the Cape of Apostle Andreas before exiting in a south easterly and northerly direction, respectively.