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Helicopter blades act in the same way as the wings of an airplane. They generate lift with the air flowing faster on the top of the airfoil then on the bottom. When you reach a certain speed, depending on blade specifications and limits, the air flowing over the blades become equal on the top and bottom of the airfoil. This is what is known as blade stall. The blades no longer generate lift. The same effect in fixed wing aircraft is known as a speed stall. This concept also takes place when a helicopter flies too high. As the air thins with altitude eventually there is not enough air for the blade to "bite". Thus blade stall again.
What else can I help you with?
What is the maximum forward speed of a helicopter?
Most helicopters fly at about 170 knots, but some are faster.
What is the maximum speed of a CH-53D helicopter?
Their maximum speed is listed as 315 km/h.
What is the phenomenon called that limits a helicopter's maximum speed?
Retreating blade stall.
What is the maximum speed of a BMW E46?
The BMW E46 has a maximum speed of 155 mph when electronic limitations are placed on it and 192 mph when there are no limits. These are the European specifications.
Can a cobra helicopter break the sound barrier?
No, a Cobra helicopter cannot break the sound barrier. The maximum speed of a Cobra helicopter is around 185-190 mph, which is significantly lower than the speed of sound (about 767 mph at sea level).
What is the max speed of a CH-47 helicopter?
A CH-47's max allowable airspeed will vary with gross weight, altitude and air density, but the limitations chapter in the operator's manual specifies 170 knots (196 mph) as absolute maximum airspeed.
How much does an army helicopter weigh?
Not all army helicopters have the same weight. The Sikorsky UH-60 Blackhawk helicopter weighs 13,648 pounds when empty. This helicopter has a maximum speed of 173 miles per hour.
Is a helicopter faster than a car?
The fastest car is faster than the fastest police helicopter. However, cars are generally limited to roads and traversible ground, whereas a helicopter can fly a straight line from point A to point B. There are several instances of criminals with fast cars who have managed to lose police helicopters in pursuit. However, they pale into insignificance against the criminals in fast cars who don't. The physics of any rotary wing propulsion device restricts it's forward speed to around 250 mph. The fastest helicopter in the world currently is the Westland Lynx with a maximum forward speed of 249.10 mph.
Which was the maximum speed of BMW type 501 1956?
The BMW Type 501 1957 has a maximum speed of 155 miles per hour. If there are any electronic limitations placed on the car, the maximum speed is more like 192 miles per hour.
What happens when an object is dropped from a helicopter?
When an object is dropped from a helicopter, it will fall due to gravity. Its speed and direction will be influenced by air resistance and any wind present. The object will accelerate until it reaches its terminal velocity, which is the maximum speed at which the air resistance equals the force of gravity.
What happens to the advancing blade of a helicopter?
The "advancing blade" of a helicopter refers to the side of the rotor which moves forward in relation to the fuselage. As each rotor blade makes a full circle around the center, on one side of the swing, it moves forward, and on the opposite side it is moving towards the rear of the helicopter. When the helicopter is moving forward in air, the rotor blades on the advancing side are moving at a higher airspeed than the rotor blades elsewhere. Rotor speed + aircrafts forward airspeed. This results in slightly more lift on that side. Conversely the exact opposite is happening on the other side where you get Rotor speed - aircraft forward airspeed. This creates a tendency for helicopters to want to roll at high airspeed. This is one of the many odd tendencies of rotor aircraft that pilots are constantly adjusting to balance out.
What is effect of the weight of the helicopter on the terminal speed - slide3?
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.
