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Six - The Boeing CH-47 Chinook is a versatile, twin-engine, tandem rotor heavy-lift helicopter. Its top speed of 170 knots (196 mph, 315 km/h) was faster than utility and attack helicopters of the 1960s and even many of today. Its primary roles include troop movement, artillery emplacement and battlefield resupply. It has a wide loading ramp at the rear of the fuselage and three external-cargo hooks.
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Why do some helicopters have different numbers of blades?
If you mean rotor blades, theoretically, only one (provided it is counterbalanced and moves fast enough). But you'll typically see two or more. Helicopters use more than one because it requires less rotor speed to get the same lift, and it also runs a lower risk of failure in the mechanical systems. Many rotocraft use four or five, and some up to six or seven blades. There are a few helicopters that use two main rotors, and they are counter rotating so that their torque cancels and a tail rotor is not necessary. But the mechanical complexity of these main rotor systems impinges on mechanical reliability.
What are the parts of a windmill?
The simplest part of a windmill are the rotor blades, generator and the shaft. but there are many parts when it comes to wind turbines. hope this helps!
How many poles as salient pole rotor?
'Salient' means 'sticking out', so if the pole sticks up from the rotor shaft, then it is a salient pole machine.
What is the average altitude of helicopter flights?
You don't provide enough information to answer that question specifically but I can give you a few probabilities. The possible range of a helicopter varies greatly with engine size, body size, weather and location. In general commercial helicopters can do from two to four hours in the air with a top speed of from 50 to 200 knots (air speed). This gives you an average range of around 200 miles...but like I said, there are many variables and these numbers can change greatlly. I am referring to the puma helicopter in particular! 1,200 miles or 1,900km for an Apache Attack chopper. 1,952 km, 1,240 miles or1,080 nautical miles : MI-26 Russian heavy lifter 1,216 nm or 1,400 miles or 2,252 km Chinook CH-47
Why does a ceiling fan have only 3 blades?
Fans can have any number blades--even one! (but then you need a counterweight for balance). There are airplanes that have one blade for a propeller. There are many variables that figure into how many blades a fan has. Air velocity, noise, shape of the blade, length of the blade, material cost, vibration, etc. For airplanes sometimes they change 2-bladed propellers for three or four or more to get different flying characteristics.
How many passengers can a Chinook helicopter hold?
31
Is the shunnok a army helicopter?
Chinook is a helicopter used by many armies and air forces around the world.
How many roter blades can a helicopter have?
6
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.
How many blades does fastest helicopter have?
Helicopters created nowadays generally have 2 or 3 blades. The fastest recorded helicopter has 3 blades. as it revolves more pressure is put forth and therefore the helicopter travels faster
How many wings does a helicopter have?
Helicopters do not have any wings. Airplanes have wings Helicopter has rotors. A helicopter has at least two sets of rotors. One rotor creates lift ( Main Rotor on the top ) & the other prevents the helicopter from spinning in circles( Tail Rotor).
How many blades does a bristow helicopter have?
Bristow has many types of helicopter with, 3, 4 and 5 blade rotors
How many feet away should you remain from a helicopter with rotors in motion?
It is not really about how many feet you are away from it. it is more about where you are standing near it. you can perfectly walk under the blades of a helicopter while in motion. just try not to jump or throw things things in the air. always enter the helicopter from the front of it, not from the back where the tail rotor or tail boom is
Why was the helicopter invented by Igor Sikorsky?
Igor Sikorsky was one of many helicopter inventors. He was the one who invented a helicopter that used a tail rotor to counteract the thrust of the main rotor, and he was able to build one with a strong enough engine, an efficient enough rotor, and a light enough airframe. So his helicopter became the first successful commercially produced helicopter.
How many rotors does the helicopter have?
Helicopter can have 2 blade, 4 Blade, 6 Blade, 8 Blades. Selection of this Blades depends up on the Power Rating. For a small 2 Ton H/C, it can have 2 Blades. 5 Ton H/C can have 4 Blades etc..
Why do some helicopters have different numbers of blades?
If you mean rotor blades, theoretically, only one (provided it is counterbalanced and moves fast enough). But you'll typically see two or more. Helicopters use more than one because it requires less rotor speed to get the same lift, and it also runs a lower risk of failure in the mechanical systems. Many rotocraft use four or five, and some up to six or seven blades. There are a few helicopters that use two main rotors, and they are counter rotating so that their torque cancels and a tail rotor is not necessary. But the mechanical complexity of these main rotor systems impinges on mechanical reliability.
What is the difference between a helicopter rotor and propeller?
A typical aircraft propellor cuts through the air much like a screw and provides thrust to the aircraft. Many of the modern airplanes have propellors which are variable pitch and they change pitch so that it can increase the blade angle to grab more air or decrease the angle to grab less. When the pitch is changed by the pilot, both (or all 3 or 4) blades change pitch at the same time and the same angle. === === The main rotor blades of a helicopter provides lift and thrust for forward motion. To do this, the rotor controls input a pitch control to the Blade that is moving to the Aft and decreases pitch to the blade moving forward or vice versa. Therefore, unlike the typical airplane propellor, the helicopter blades do not have the same pitch ange. One result of this is that the loads on the blade attachments (or grips) and the Mast have higher bending loads and torque loads and the loads are not symmetrical as it would be with regular propellor blades.
