360° Videos

Manual: How to watch 360° footage on YouTube

360° video is recorded by a special camera system that simultaneously record 360 degrees sphere. You can freely look around during watching the video – it’s like remotely controling the camera.

 

Computer: Click on the video and while holding down the left mouse button move the mouse to look around. You can also use W-A-S-D and arrow keys. 360 videos does not work in Safari, try Chrome or Firefox.

Tablet and Smartphone: Just tap on the video and drag to look around or simply move/tilt your mobile device. You have to use the newest version of the official YouTube app for Android/iOS to watch 360° degree video. Open link to the film in YouTube app, otherwise you will not be able to rotate the sphere. Be aware that some phones doesn’t have a gyroscope and physically tilting a device doesn’t change the point of view. 

VR gogles: The best way to watch VR footage is by using special VR goggles. Run YouTube app, click the goggles icon in the lower right corner of the screen and put smartphone into the goggles.

Quality: If the image is blurred then you have to manually select higher-quality by clicking on the gear/dots in the right corner of the video and selecting 1080S or 4K/2160p. Smooth playback of high-quality video requires powerful computer.

The correct way to watch 360 video is shown on the right. You can look around in the video.

If image appears to us as panorama in which you can’t move the camera then it means that the video is not working as it should. Remember to use newest YouTube app on a mobile device. 360 footage does not work in Safari nor IE, try Chrome or Firefox.

 

 

 

Autogyro – Gyrocopter

Gyrocopter (Autogyro) combines the benefits of an airplane and a helicopter. Gyrocopter looks quite similar to a helicopter. These machines have some common features such as a large propeller at the top of the machine, ie a rotor. Both belong to the rotarywing family. However, these are other flying structures on other terms.

Autorotation

Unlike the helicopter, the main rotor of the gyrocopter is not driven by the engine.

The engine only drives the propeller on the rear of the machine. Gyrocopter flies using the phenomenon called autorotation.

It is worth to look at the setting of the rotor during the flight. In the helicopter the rotor is tilted forward during the forward flight. In the gyrocopter in the forward flight the rotor is tilted to the rear of the machine. The main rotor rotates thanks to the airflow of air coming from the front of the machine during forward flight.

As we fly forward, the stream coming from nose from below through the blades causes rotor to rotate. The rotating rotor further generates lift.

It’s easier to imagine this by comparing the rotor to the car’s wheels. Looking up at a rotating rotor it creates a wheel. The car wheel consists of a rim and a tire. The part of the wheel formed by the tire is used to capture energy from incoming air and rotate the rotor. The part of the wheel that is formed by the rim is responsible for generating the lift.

Features:

Everything depends on the specific design, but for example:
The speed of small double-seat gyrocopter is about 90mph which is 150km / h
The weight of the empty machine is about 300kg. The weight of the ready-to-fly two people and the fuel is about 500kg
The cost of one hour flight is about 150 usd.
The cost of double gyrocopter is about 60-90 thousand euro + vat
The cost of making the gyrocopter license is about 4000 usd.
Depending on the gyro motor engine we can refill even at a regular petrol station (PB95 petrol)
You can install a ballistic parachute for safety.

Most of the smaller gyrocopters are driven by an internal combustion engine and a pusher style propeller. The pusher configuration provides excellent visibility because no propeller at the front and it does not block the view. A significant part of the gyrocopters I’ve seen is double-seated, although there are also larger gyrocopters that carry more passengers or cargo. Gyrocopters can be used, for example, for patrol flights or field spraying.

 

pre-rotation

The rotor must rotate in order to fly. We have to spin up the rotor to the specifiic speed before takeoff. In simple gyrocopters we turn the rotor initially by hand by catching the rotor and spinning it, then we add gas and start to drive forward on runway. Rotor now starts turning thanks to the upcoming air flow. In more advanced designs, a special system is used (prerotator) which diverts power from the rotor to the propeller. Using the engine power, we can prerotate the main rotor to a certain speed, then we return with the power back to the propeller. Then we start to drive forward and after a while we can lift off and fly.

Disadvantages

In general, you can distinguish several different types of gyrocopter, ranging from very amateur machines sold as self-assembly kits as well as advanced constructions created in specialized factories. 30-40 years ago the gyrocopters were considered dangerous. In the past, a lot of people were killed on self-built structures by flying without proper knowledge. At the moment there are plenty of manufacturers who are certified and produce gyrocopters that have been tested and proven.

The pilot is the most important factor responsible for the safety of the aircraft. It is up to the man to use the tool he has at hand, and common sense and rational thinking will not replace any education, title or level of prosperity.

An inexperienced pilot can under certain conditions, for example, tug the stick to create a pilot induced oscillation, which can lead to extreme swinging of the rotor and contact of the rotor with the propeller in extreme scenario.

If the pilot is flying too slowly and too low (eg. during the takeoff), then the flight may end before it even starts. Rotor need a specific turning speed.

The gyrocopter can not fly with zero G (or negative overload) for as long as 1-2 seconds. This would unload the main rotor and then the torque from the motor would lead to rotating the machine to one side and losing control.

 

Advantages

The gyrocopter is an incredibly responsive machine. We can do maneuvers which we do not make by plane such as sudden turn or turn in place. You can fly 120km / h and make a rotation almost in place in 2 seconds.

Sharp maneuvers in the air are also much more comfortable compared in gyrocopter compared to other flying airships with wings. In a very simplified terms: rotating rotor blade form a circle. However, if we had taken a photograph of them in flight, we would see no round rotor wheel but two long and narrow blades. Compared to the wings of the aircraft, the two blades are much smaller. In great simplification, if you want to do more then the air will pass through the rotor as through a strainer. The windmill can not do greater than 3.5-4G – it works like a strainer. When making sharper maneuvers we feel as if we were flying on a padded platform. When it comes to sudden gusts of wind gyrocopter is better in worse weather and it’s more comfortable than airplane during bad weather.

 

Security

The gyrocopter needs less space to launch and much less landing space than a plane. Many people believe that gyrocopter is also much safer than airplanes or helicopters. As the engine goes off the rotor is still spinning. When the engine fails, the gyrocopter remain in the air (controlled descent) and we can still land on it. As soon as we slow down, the machine just starts to slowly descend without forward flight. The gyrocopter can not fall into a corkscrew. It quickly descends without progress, holding the rotor spinning all the time. In case of engine failure, the aircraft must have a longer piece of road to land safely. The gyrocopter lands practically in the point. Of course there are exceptions to this, eg STOL planes, but there also in case of engine failure is not too beautiful.

The gyrocopter, however, has less aerodynamic perfection compared to airplanes, so it consumes more fuel to travel the same route.

The gyrocopter is also generally slower than the airplane.

 

Compared to helicopters

The gyrocopter is not a helicopter. Gyrocopter from the nature of construction can not make a hover, takeoff verticall, land on a point or fly backwards. Piloting gyrocopter is more of an airplane than a helicopter. The small twin-seated gyrocopter is also much simpler to fly, cheaper to buy and much cheaper in operation compared to a 2-3-4 helicopter like the Enstrom 280 or Robinson R22 / R44 (of course, larger machines)

In the gyrocopter we have a rotor with a fixed angle of attack of the blade. However, there are special gyrocopter constructions that allow for a jump takeoff – vertical takeoff like a helicopter thanks to the possibility of changing the angle of attack of the rotor blades.

 

The airspeed in the aircraft is measured relative to the medium (air and not ground) so it’s a little differently than in the car. Therefore, the the wind changes our velocity to the ground. It is easier to imagine the principle of swimming upstream in the river. We can paddle with all our strength and move forward relative t to the water. However, we can go back relative to the tree on the shore, due to the strong current. The minimum speed at which gyrocopter continue to fly forward and maintain the height without descending is about 30km / h (of course it depends on the machine). So if we have wind blowing from the bow at a speed of eg 40km / h then we can fly 10km / h backwards. Same with hover. Of course, the gyrocopter is not a helicopter.

 

Vortex Ring State
There is no such thing in a gyrocopter. Air is passed through the rotor from the bottom and not sucked from above the rotor as in the helicopter.

 

Most helicopters are equipped with a main rotor torque correction system, ie a small rotor at the rear of the machine facing the side. Without this system, the helicopter would spin around like a swirl. There are also helicopters in coaxial configuration, intermeshing, tandem, tip-jet, etc. In the gyrocopter the rotor is not driven from the shaft, which does not generate torque. No additional correction system is needed.

 

Various configurations

There are different types of gyrocopter. There are open and closed cockpit designs with side-by-side arrangements and one behind the other. The open construction provides the best visibility. The closed design does not require us to dress properly and it is more pleasant to fly in winter because it has heating. There are also “hybrid” gyrocopter that allow you to change the configuration from open to closed in minutes. gyrocopter can be equipped with skids, which allow them to operate on snow / ice or floats allowing the machine to operate from water.

 

Transport and hangar

The gyrocopter is simpler to transport from an airplane. When we want to move it, simply unscrew the rotor blades and pack the gyrocopteron the trailer. Displacing most planes takes much longer and is much more complicated. If we transport a gyrocopter on a short distance (up to 15-20km) we do not even have to remove the blades. However, you have to know how to transport it.

 

The gyrocopteralso takes up less space from the aircraft. The plane needs a hangar with a gate width of 7-10 meters.  Gyrocopter needs just a little higher and longer garage.

 

Visibility

An open gyroplane provides excellent visibility. It is a great observation platform. Better at this angle is probably only a paraglider and a balloon. Of course, the paraglider is also much cheaper. However, you can’t fly paraglider or ballon in the thermic-we can fly in the morning or in the evening but not in the sunny day. Paragliding is also slower