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12.5 ft. to 19 ft. :-)
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How fast do the tips of helicopter rotor blades go?
Some helicopter main rotor blades spin at roughly 185 rpm and extend out up to 20 ft so your question is subjective to the helicopter you are speaking of.
What is the difference between a plane and a jet?
A Jet plane has no propellers. (Actually, there are 'prop-jets' on which propellers are powered by jet engines.)There is basically no difference in the airplane. The engines are different and sometimes the design of the wings or fuselage is different to allow for the different type engines. For example, early single-engine jets had their engines embedded within the fuselage so the air flow entered the nose or just under the wings and exited the tail after being ignited.Another difference is that Jet aircraft usually fly faster than propellor. The wings on propellor a/c are usually straight whereas the wings of jets are slanted aft. This improves aerodynamics when the jet approaches the speed of sound.
How does a windmill or helicopter turn?
Helicopters and windmills turn different ways. Windmills turn by the wind. The stronger the wind, the faster the windmill goes. Helicopter turn by electricity. Electricity is "hot". For Example: If you get electrocuted it will feel hot. You will really be getting burnt. So the heat of of the fire will light the wire's and that will turn the helicopter's propeller.
What type of simple machine is a helicopter?
There are six types of simple machines: lever, pulley, inclined plane, wedge, screw, and wheel and axle. A typical helicopter will contain ALL of these. Many people will think the main rotor is a screw.
What is the length of an blade for a gas turbine?
The length of a blade depends on the style (impulse or reaction), the overall size of the turbine, whether it is an axial flow or radial flow turbine, and where the blade is located within turbine of an axial flow turbine. One thing that is constant: the length of the blade increases from the steam or gas inlet to the discharge of the unit. The profile will gradually increase in diameter from inlet to discharge.
What are the propellers for on a helicopter?
to move the helicopter left and right
Which helicopter hovers the longest the one with the long propellers or the short propellers?
The Helicopter with the long propellers creates more list and has to do less rotations, and use less power than the one with short proplellers. Therefore Helicopter with the long propellers will hover and stay in air longer than the one with short propellers.
Does short propellers fly longer or long propellers on a helicopter?
it depends on the engine and the shape of the blade.
How heavy is a military helicopter with two propellers?
300 Pounds
Why does helicopter have propeller and aeroplane not?
Aircraft do have propellers , unless they are jets.
How many propellers are there on a helicopter?
Generally speaking there are 4 propellers. Two of them are crossed over each other that form the main propellers, and the other two are at the rear.
How many Decibels does a helicopter make?
Standing next to a helicopter while the propellers are spinning is 110-115dB.
How does the wingspan of a falling helicopter effect the speed?
It wouldn't, the propellers are designed to propel the helicopter off of the ground, thus the word propeller, not to make the helicopter glide. The wings are too thin to hold up a helicopter and that is why they spin to gain ground as well as using kinetic energy to lift up. The propellers would eventually bend or snap if the helicopter would be to fall, the speed of the wind would break or damage the propellers.
What is the name of the helicopter with two propellers used to carry suppies?
black hawk
Why do helicopters have propellers for kids?
They do not have propellors for kids. The propellors make the helicopter fly straight
What is another name for helicopter blades?
Rotors, they are generally so-called (Props) applies to conventional propellers on conventonal aircraft, of course an autogyro or a Rotordyne has both propellers and Rotors but that is a special case.
Do helicopters have lights on their propellers?
sometimes, but they need to be on both sides or else the helicopter will lose its balance and crash! it is not beneficial if you put the lights on the propellers because they will move so fast you can't see them...
