Helicopters

A helicopter experiences drag through air resistance as it moves through the atmosphere. The main sources of drag in a helicopter are profile drag from its overall shape and skin friction from the airflow over its surface. Additionally, rotor tip vortices and induced drag generated by the rotor system contribute to overall drag.

Precession: The rotor disc tilts in the direction of the force applied, 90 degrees later. Rigidity in Space: The rotor disc stays in a fixed plane as long as the helicopter is spinning.

A helicopter typically has mechanical energy in the form of both potential energy (stored energy due to its position) and kinetic energy (energy of motion as the rotors spin).

The higher you are from the Earth's surface - the lower the air pressure is. Helicopters are heavy machines - requiring a huge amount of effort from the rotor blades to keep it airborn. The lower the air-pressure, the harder the rotors have to work to keep the craft flying.

The shape of the blade of a paper helicopter can affect its flight by influencing factors such as lift and drag. Blades with a larger surface area or more angled design may generate more lift, while blades with a streamlined shape may reduce drag, resulting in longer flight times. Experimenting with different blade shapes can help optimize the performance of a paper helicopter.

Rapid response wiring involves direct electrical connections that enable quick and precise transmission of signals from the pilot's brain to the helicopter controls. This allows the pilot to make instantaneous adjustments in response to changing conditions, such as storm-strength winds, without any delay or lag in communication. This enhances the pilot's ability to maintain precise control over the helicopter, improving safety and maneuverability in challenging environments.

Rotocopters work by spinning rotor blades to generate lift. The weight of the rotocopter is supported by this lift force, which must be greater than the weight for the rotocopter to stay airborne. Drag is generated as the rotocopter moves through the air, which must be overcome by thrust generated by the rotor blades to maintain forward motion.

The size of a helicopter blade affects the speed of rotation by determining the amount of lift generated and the amount of drag produced. Larger blades tend to generate more lift but also experience more drag, which can impact the speed of rotation. Adjusting the blade size can help optimize the balance between lift and drag to achieve the desired speed of rotation.

A helicopter typically uses mechanical energy by converting the power from its engines into rotational motion of the rotor blades to generate lift and thrust for flight. Additionally, the engines in a helicopter can run on various fuel sources such as gasoline, jet fuel, or diesel, which provide the energy needed for propulsion.

A helicopter typically uses various forms of energy, including chemical energy from the fuel used to power the engine, mechanical energy in the rotating components like the main and tail rotors, and kinetic energy as it moves through the air.

A helicopter Pfeiffer damper works by using a rotating pendulum attached to the rotor head. The pendulum moves in response to changes in the rotor system's orientation, providing a counteracting force to reduce vibrations. This helps stabilize the helicopter during flight and improves overall control and handling.

The rotor blades of a helicopter are tilted backwards when rotating to generate lift and control the direction of the aircraft. This tilt is called "pitch" and is controlled by the pilot using the cyclic control stick to adjust the blade angle as needed during flight. The pitch of the rotor blades can be changed to move the helicopter forward, backward, left, or right.

Helicopter blades are balanced by adjusting their weight distribution to ensure that the center of mass is aligned with the rotational axis. They go through a process of dynamic balancing where weights are added or removed to minimize vibrations during flight. This process helps to improve performance and increase safety for the helicopter and passengers.

Bernoulli's principle states that as the speed of a fluid increases, its pressure decreases. In a helicopter, the rotor blades create lift by moving through the air at a high speed. This creates a pressure difference between the top and bottom of the blades, generating lift and allowing the helicopter to fly.

The weight of the helicopter affects the terminal speed by influencing the rate at which the helicopter falls. A heavier helicopter will reach a higher terminal velocity compared to a lighter helicopter, as the force of gravity will be greater on the heavier helicopter, causing it to accelerate faster. Additionally, a heavier helicopter may require more lift to counteract its weight, which can also impact its terminal speed.

If a helicopter blade stops spinning in the sky, the helicopter will experience a rapid descent known as autorotation. This is when the airflow through the rotor keeps the blades spinning, allowing the helicopter to land safely even without engine power. It requires skilled piloting to execute successfully.

If the blades stop spinning on a helicopter while it is in the sky, the helicopter will enter a state known as autorotation. The helicopter will start to descend as the unpowered rotor blades rotate due to the upward flow of air. The pilot must carefully manage the descent and attempt to safely land the helicopter.

When an object falls in the air, the air resistance opposing its motion increases as its speed rises, so reducing its acceleration. Eventually air resistance acting upwards equals the weight of the object acting downwards. The resultant force on the object is then zero since the two opposing forces balance. The object falls at a constant velocity, called its terminal velocity, whose value depends on the size, shape and weight of the object.

This is just like Newton's laws, an object will accelerate if the forces acting upon it are unbalanced; and further, the amount of acceleration is directly proportional to the amount of net force (unbalanced force) acting upon it. Falling objects initially accelerate (gain speed) because there is no force big enough to balance the downward force of gravity. Yet as an object gains speed, it encounters an increasing amount of upward air resistance force. In fact, objects will continue to accelerate (gain speed).

Or summat like that...

Helicopters typically use aviation fuel, such as jet fuel, to power their engines, which in turn generate the energy needed to lift off and operate the helicopter during flight. Some helicopters may also use alternative power sources, such as electricity or hydrogen fuel cells, for more sustainable operations.

Helicopters generate static electricity due to the friction between the rotor blades and the surrounding air. This friction causes a build-up of electric charge on the blades, which can discharge as a spark when the helicopter lands or when personnel come in contact with it. Grounding systems are used to prevent static electricity build-up on helicopters.

The thing that spins at the top of a helicopter is called the rotor blade. It provides the lift necessary for the helicopter to take off and stay in flight. The rotor blades are attached to the main rotor mast and are powered by the engine.

The circumference of a helicopter propeller can vary depending on the size and type of helicopter. Generally, the circumference of a helicopter propeller can range from a few feet to several feet in length.

The amount of torque required by a tail rotor depends on factors such as the size and weight of the helicopter, the speed at which it's flying, and external forces like wind. Generally, tail rotors are designed to provide enough torque to counteract the torque produced by the main rotor and maintain stable flight.

The turning rotor of a helicopter creates lift by pushing air downwards, which generates an upward force that allows the helicopter to move upwards. This lift is created due to the rotor blades producing a pressure difference between the top and bottom surfaces as they rotate through the air. The angle of attack of the rotor blades can be adjusted to control the amount of lift produced and therefore the upward movement of the helicopter.

Helicopter blades spin due to the engine providing power to the rotor assembly, which causes the blades to create lift and generate thrust. The rotation of the blades also allows the helicopter to maneuver and change direction in flight.