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Two things keep a helicopter flying, and another keeps it flying straight.

To take off:

1) The blades are shaped like the wings of an airplane and create a difference in pressure (high underneath the wing, low above). This difference in pressure "pushes" the helicopter upwards (lift). But because of gravity, however, there might not be enough lift to take off from the ground.

2) In order to take off, the blades must rotate at supersonic speeds (to be stronger than gravity's push downwards), this make it possible to gain altitude.

To "Fly:"

1) A helicopter's blades in air act like a boat's propeller in water. If the blades rotate at an angle, it will start moving. To make the helicopter hover, the blades must be perfectly straight up. At the same time, the rotating blades make the helicopter itself rotate the other way (about the axis of rotation).

In a GPS, the helicopter would not be going anywhere like this (with no angle on the blades), but the Direction at which it is looking will be changing in circles

2) Helicopters need a way to fix this crazy-out-of-control spinning. They can use a tail rotor for this, but they can also use a "twin" set of blades that rotate in opposite directions (counter-rotating blades).

With the addition of counter-spinning blades, now the GPS will be pointing at 1 direction.

in summary:

1) By keeping the blades rotating fast enough to be lifting with the same force as gravity is pushing down, the altitude is kept the same.

2) By keeping the Blades from spinning at an angle, the Helicopter does not move to the sides.

3) By using a counter-rotating blades set, the helicopter is able to keep looking at one direction.

with these 3 things, Helicopter are able to hover in air, and their GPS can be kept and a fixed height, at fixed position on a map, and at a fixed direction.

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How would a helicopter remain stationery in air?

A helicopter can remain stationary in the air by adjusting the pitch of its rotor blades. By tilting the rotor blades slightly forward or backward, the helicopter can control its vertical lift and horizontal movement, allowing it to hover in place. Pilots use the helicopter's collective and cyclic controls to maintain a stable position.


When a helicopter is a stationary the blades on both sides of the rotor give the same lift?

Yes, when a helicopter is stationary, the blades on both sides of the rotor produce equal lift. This is necessary to balance the helicopter and keep it hovering in place. The main rotor provides lift by spinning rapidly and creating an upward force that counteracts gravity.


In terms of impulse and momentum why is it important that helicopter blades deflect air downward?

The blades impart a downward impulse to the air and produce a downward change in the momentum of the air. The air at the same time exerts an upward impulse on the blades, providing lift. (Newton's third law applies to impulses as well as forces.)


What is the solution to the helicopter physics problem?

The solution to the helicopter physics problem involves understanding the principles of lift, thrust, weight, and drag to keep the helicopter in stable flight. By adjusting the rotor blades' pitch angle and speed, the helicopter can generate enough lift to counteract its weight and stay airborne. Additionally, the helicopter's engine provides the necessary thrust to move forward or hover in place. Properly managing these forces allows the helicopter to maneuver effectively in the air.


How does the lift thrust drag and gravity affect a helicopter?

Thrust from the helicopter's rotor blades generates lift, which enables the helicopter to overcome gravity and stay airborne. Drag acts as a resistance opposing the helicopter's forward movement, requiring additional thrust to maintain speed. Gravity affects the helicopter by constantly pulling it downward, necessitating continuous lift to counteract and remain in the air.

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