An Introduction to Quadcopters
A quadcopter is a multirotor helicopter that is lifted and moved by four rotors. Instead of fixed-wing air aircraft, Quadcopters are named rotorcraft because their lift is created by rotors.
Quadcopters use two pairs of identical fixed pitched propellers.
- two clockwise (CW)
- two counterclockwise (CCW)
To control, these use variations of the speed of each rotor. Variation in speed of each rotor enables it to explicitly produce a coveted aggregate push. It also allows to create total torque, or turning force, and to situate for the center of thrust both laterally and longitudinally.
Quadcopters are different from regular helicopters. They use rotors, as they move around the rotor hub, that can shift the pitch of their blades.
At the beginning of a flight, quadcopters were possible solutions in vertical flight. Torque-induced control problems in helicopters can be eliminated by counter-rotation, and the short blades are not hard to develop. Many manned designs showed up in the 1920s and 1930s. These vehicles were heavier-than-air vertical takeoff and landing vehicles. However, early prototypes suffered from poor performance due to poor stability augmentation and limited control authority, and later prototypes required too much pilot workload.
Today's Quadcopter Drones
In the late 2000s, the progress of electronics enabled the creation of cheap lightweight flight controllers. The advent of accelerometers (IMU) made global positioning system and cameras most beneficial. Which made quadcopter configuration so famous for small unmanned aerial vehicles. The regular category for these kinds of radio controlled unmanned vehicles is the ramble. Because they are so small and flexible, current quadcopter drones can fly indoors as well.
At a small size, quadcopter drones are more durable and less expensive than regular helicopter drones due to their mechanical simplicity. Their smaller blades are beneficial because of having kinetic energy. To reduce the potential of damage, it is possible to fit quadcopter drones with guards that enclose the rotors. However, fixed propeller quadcopter drones become disadvantageous over regular helicopters as size increases. Changing blade speed takes longer which increase momentum and impacts control. Since increasing the size of the rotor disk does not impact the ability to control blade pitch that’s why helicopters do not experience this issue.
ViFLY R220 Review from techadvisor.co.uk:
FPV racing is becoming popular in the UK and other countries, but you can’t buy a ready-to-fly package. Anyway, until ViFLY came along with its R220, that was true.
It is a first-person-vision racing drone comes with ready to fly out of the box. Except for FPV goggles, it includes almost everything. Additionally, you can add ViFLY’s own for an extra $119.
The standard package includes a battery, a charger, drone, a remote controller, a GoPro mount, and a spare set of propellers making you fly and record video.
Newbie here? No worries read about the UK drone laws.
The package's original price is $399 but is currently discounted to just $299 direct from ViFLY. You just need to pay $299 because ViFLY pays the import duty in advance.
You can look at the Immersion RC Vortex 250 Pro to see how good this value is.
Even though this is ready-to-fly FPV drone, but that price doesn’t include the battery and the transmitter. The total price with those will be £477.
Since racing drones are easily crashed, so ViFLY have announced that they will make one repair free. The other alternative is to tell ViFLY which parts you need, and they will ship it to you for free making you repair the drone on your own.
The R220’s all components are enclosed in a carbon fiber sandwich. There is a tough multicolored plastic surround which protects the components.
It is a little smaller than the usual 250mm rivals. It is better protected when you crash because the FPV camera is at the front and is set back. It’s covered in rubber so you can angle slightly up or down. You can see the quad through the two strips of bright and white LEDs set into the front arms.
When you crash it, it beeps loudly which helps you find it if it is lost in the long grass.
- 1500mAh 35C 3S battery for $24
- a 14.8V 4S version for $29.
Although flight time depends on some factors, we can expect it to be around
- six minutes with the 3S
- eight minutes with the 4S.
When you first connect it, an LED display shows the voltage of the battery which enables you to see whether it is fully charged or not.
There is a button on the side to change video channels. For example, you can cycle between three different power levels, if you hold the button for three seconds, but still, it depends on what’s allowed in your country.
ViFLY bundles the well-known FlySKY i6-VF remote controller which talks to a FlySKY FS-iA6B receiver on the drone.
According to camera drones I’ve reviewed, the R220 is one of the most durable and robust racing quads.
The quad shrugged off with high-speed crashes without any effects.
As compared to many others, it is very fast.
The motors are able to maneuver the R220 deftly around objects.
The R220 has an auto-leveling mode. The motors have the power to counteract any wind. All you need is to just learn the flying skills.
You can utilize the remote controller’s right-hand switches to change from the horizon.
I linked a set of Fat Shark V3 goggles(supplied by GearBest) to check out the R220’s and FPV on-board OSD.
ViFLY R220: Specs
- Size (L x W x H): 200x185x80mm
- Size (between rotors): 220mm
- Weight: 450g (excluding battery)
- Remote Controller: FlySKY i6-VF
- Receiver: FlySKY FS-iA6B
- OSD: Clean Flight OSD
- Brushless Motors: Custom VF-RC-2205 Kv2300
- ESCs: F20A
- Propellers: 5045
- Battery: 11.1V 1500mAh 35C 3S Li-PO (optional 14.8V 1500mAh 35C 4S Li-PO)
- Flight Time (approx): 6mins(3S) / 8mins(4S)
- Working Environment -10? ~ +40? Camera Resolution: 700TVL
- Field of View: 120°
- Wireless Video Transmitter: 5.8GHz, 40 channels
- Output Power: 25mW/200mW/500mW
- Antenna: Right-handed circular polarization
- Warranty: 1 year
The ViFLY R220 is a fantastic choice for newbies who want to get into FPV racing. It is incredible because kit includes everything you need to get fly.