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Most typical helicopters can only go about 150mph or maybe a little faster. Compound helicopters or the V-22 Tilt-Rotor can fly at over 200mph or even 300mph. The maximum airspeed of a helicopter is limited by the speed of the rotor blade. The speed of the tip of the blade can not go faster than the speed of sound or it will go through the sound barrier and start to form 'shock waves' which can lead to vibration.This can be alleviated somewhat by changing the angle of the leading edge on the tip so it sweeps back. This has been introduced on several helicopters such as the Apache, Black Hawk and Lynx.
The rotor blade turns about 50-60 revolutions per second although this is largely dependent on the length of the blade. The further out from the centre, the faster the rotational velocity and the faster the air is flowing over the blade. As the helicopter moves forward through the air, the velocity of the air over the advancing blades is the sum of the Forward Velocity Plus the rotational speed of the blade. Retarding blades do not suffer this problem as the airspeed at the tips is reduced, by virtue of the fact that the blades are travelling in the same direction as the airflow caused by flight.
For example: Suppose the speed of Rotor Blade tip (helo in a hover) = 350mph. Speed of the Helicopter in flight = 150mph. Speed of Advancing Blade (in flight) = 350 + 150 = 500mph This simple calculation will determine the maximum speed of the helicopter. The two coast guard helos I am familiar with are the old HH3-HF Pelican that had a V-Max forward airspeed of 142knots and the HH60 Jayhawk that is rated about 165
What else can I help you with?
How is a hellicopter made?
you need a roter to steer the hellicopter
How do you get a hellicopter in GTASan Andreas?
you can go to the 3rd islands airport in los ventures
What do you do with the crab on wimpy boardwalk on poptropica?
( get the fish stick from fregleys mom by putting lotion on the slide at the fun house and get rowley out) once you have a fish stick, click USE and it will automaticlly go on the hellicopter. Then, go to the beach and go near the kid. a crab should come out of the water. put the hellicopter near the crab, click on youreself. go into youre storage and you should have a crab hangging on a hellicopter!
How fast does a military helicopter go?
The fastest are attack helicopters like Apache, they mostly fly about 230 -250 mph.
How fast can an Apache attack helicopter travel?
232mph
How did the Jews get to marseille?
By Hellicopter
How do you spell hellicopter?
helicopter
How fast is a apache rlx 250 quad?
60-70mph
Who invented the hellicopter?
Igor Sikorsky
How do you spawn a jet on gta iv 360?
You have to be flying in a hellicopter and press triangle and circle for a turbo boost then you pop into a really fast jet and you will fly out of the map
How fast can the Apache helicopter fly?
It depends on which Apache version: AH-64A=265 mph;AH-64D=295 mph
How fast does a Apache run?
Having a certain ethnicity doesn't necessarily make an individual fast or slow, because of the ethnicity alone. But there are some pretty fast Apache out there. (The Jicarrella actually hold a cermonial relay race - see related link.) The Apache warriors of the American West were, however, noted for their physical and fighting skills, which were a necessity for survival.
