# The Mechanism Of Drone!

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Drones fly thanks to rotors that they use for propulsion and control. When it comes to drones all forces come in pair meaning that as long as the rotor pushes down on the air, the air pushes up on the rotor. So, how much do you know about drone mechanism? Take our quiz and find out.

• 1.

### What are the 3 things that that a drone can do?

• A.

Climb, descend and spy

• B.

Spy, hover and climb

• C.

Hover, climb, and descend

• D.

Film, capture and fly

C. Hover, climb, and descend
Explanation
A drone is capable of hovering in the air at a fixed position, climbing to higher altitudes, and descending to lower altitudes. These three actions allow the drone to maneuver and navigate in the airspace. The other options mentioned, such as spying, filming, capturing, and flying, are not exclusive actions of a drone as they can be performed by other devices or vehicles as well. Therefore, the correct answer is hover, climb, and descend.

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• 2.

### What are the main requirements for the drone to hover successfully?

• A.

The net thrust of the four rotors pushing the drone up must be equal to the gravitational force pulling it down

• B.

The net thrust of the main rotor pushing the drone up must be equal to the gravitational force pulling it down

• C.

The net thrust of the four rear rotors pushing the drone up must be equal to the gravitational force pulling it down

• D.

The net thrust of the 2 front rotors pushing the drone up must be equal to the gravitational force pulling it down

A. The net thrust of the four rotors pushing the drone up must be equal to the gravitational force pulling it down
Explanation
The main requirement for a drone to hover successfully is that the net thrust of the four rotors pushing the drone up must be equal to the gravitational force pulling it down. This means that the combined force generated by the four rotors must counteract the weight of the drone, allowing it to stay suspended in the air without any vertical movement. If the net thrust is not equal to the gravitational force, the drone will either ascend or descend instead of hovering in place.

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• 3.

### How do you move the drone up?

• A.

By increasing the thrust of the 4 rotors

• B.

By increasing the thrust of the 3 rotors

• C.

By increasing the thrust of the 2 rotors

• D.

By decreasing the thrust of the 4 rotors

A. By increasing the thrust of the 4 rotors
Explanation
By increasing the thrust of the 4 rotors, the drone will move up. The thrust generated by the rotors creates an upward force that counteracts the force of gravity, allowing the drone to ascend. Increasing the thrust of all 4 rotors ensures a balanced upward force, maintaining stability and controlled movement upwards.

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• 4.

### What are the 3 forces on the drone once it has gone up?

• A.

Weight, thrust and air bag

• B.

Speed, mass and velocity

• C.

Speed, lightness and thrust

• D.

Weight, mass and air bag

A. Weight, thrust and air bag
Explanation
The three forces acting on a drone once it has gone up are weight, thrust, and air resistance. Weight is the force exerted by gravity pulling the drone downwards, thrust is the force generated by the drone's propulsion system pushing it upwards, and air resistance, also known as drag, is the force opposing the drone's motion through the air. The air bag mentioned in the answer is not a force, but rather a safety feature that may be present in some drones to protect them from impact.

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• 5.

### How do you bring a drone to come down?

• A.

By slowing down rotations

• B.

By decreasing the rotor thrust

• C.

By Increasing the rotor thrust

• D.

By decreasing the rotor weight

B. By decreasing the rotor thrust
Explanation
To bring a drone down, decreasing the rotor thrust is necessary. The rotor thrust is the force that allows the drone to stay airborne. By reducing this force, the drone will start descending. Slowing down rotations or decreasing the rotor weight will not directly affect the drone's altitude. Increasing the rotor thrust would have the opposite effect, causing the drone to ascend rather than come down.

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• 6.

### How do you get your drone to rotate?

• A.

By getting the 4 sets of rotors to rotate in opposite directions

• B.

By getting the 8 sets of rotors to rotate in opposite directions

• C.

By getting the set of rotors to rotate in opposite directions

• D.

By getting the 2 sets of rotors to rotate in opposite directions

D. By getting the 2 sets of rotors to rotate in opposite directions
Explanation
To get a drone to rotate, you need to get the 2 sets of rotors to rotate in opposite directions. This is because when the rotors on one side of the drone spin faster than the rotors on the other side, it creates a torque or rotational force that causes the drone to rotate around its central axis. By adjusting the speed and direction of rotation of these two sets of rotors, the drone can be controlled to rotate in different directions.

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• 7.

### What does the angular momentum depend on?

• A.

On the quality of the drone

• B.

On the weather

• C.

On how fast the rotors spin

• D.

On how strong the wind is

C. On how fast the rotors spin
Explanation
The angular momentum of a drone depends on how fast the rotors spin. Angular momentum is a property of rotating objects and is directly proportional to the rotational speed. As the rotors spin faster, the angular momentum of the drone increases. Other factors such as the quality of the drone, weather conditions, and wind strength may affect the performance and stability of the drone, but they do not directly determine the angular momentum.

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• 8.

### What is a quadcopter drone?

• A.

It's a drone where 1 side is the front?

• B.

It's a drone where every side is the front?

• C.

It's a drone where 2 sides are the front?

• D.

It's a drone where 5 sides are the front?

B. It's a drone where every side is the front?
Explanation
A quadcopter drone is a type of drone that has four rotors or propellers, hence the name "quadcopter". Each rotor is positioned at the corner of the drone, allowing it to hover and maneuver in various directions. Unlike other types of drones, where only one side is considered the front, a quadcopter drone does not have a designated front side. Instead, it can move forward, backward, left, right, up, and down, making every side of the drone function as the front depending on its orientation and the desired direction of movement.

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• 9.

### How do you control your drone using a computer?

• A.

The computer does all the work

• B.

The computer does half of the work

• C.

You simply push a joystick and the computer does 60% of all the rest

• D.

You simply push a joystick and the computer does all the rest

D. You simply push a joystick and the computer does all the rest
Explanation
The correct answer is "You simply push a joystick and the computer does all the rest." This means that controlling the drone using a computer involves using a joystick to give basic commands, and the computer takes care of executing those commands and controlling the drone's movements. The computer handles all the complex tasks and calculations required for flying the drone, making it easier for the user to control the drone using a simple joystick input.

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• 10.

### What makes minute adjustments in the power to each rotor?

• A.

A sim card

• B.

The main engine

• C.

An accelerator and gyroscope

• D.

The computer

C. An accelerator and gyroscope
Explanation
The correct answer is "An accelerator and gyroscope." An accelerator and gyroscope are sensors commonly used in drones and other aircraft to provide stability and control. The accelerator measures the acceleration of the drone in different directions, while the gyroscope measures the orientation and rotation of the drone. By continuously monitoring these measurements, the drone's computer can make minute adjustments in the power to each rotor to maintain stability and control during flight.

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• Current Version
• Mar 20, 2023
Quiz Edited by
ProProfs Editorial Team
• Mar 20, 2019
Quiz Created by
Anouchka

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