Helicopters

the first helicopter/design was called the cork screw and it was made by Leonardo DA vinchi who also painted Mona lica
Paul Cornu, a French inventor, had an experimental one out in l907 (Flights) lasted for about 30 seconds or so but so did early Wright hops(the first one was either l2 or fifteen seconds. there was also an experimental helicopter from the Danish inventor and engineer Ellehammar. Ellehammer also made more conventional aircraft and the company he founded still makes, of all things, fire extinguishers! a practical application. There is some evidence of toy helicopters in l9th century Paris allegedly found by some missionary priest type wandering in either the Paris equivalent of Chinatown or one of the oriental colonies. These were vertical things with a torque tube and counter-rotating props, one wound the thing up and pulled the pin when ready to launch, known as the De Launoy top, these were a popular Chinatown toy in the US and may have been adapted to launch parachute flares, etc , you known the Oriental thing about fireworks! All of this is long before Sikorsky, who did come out with the first sustainable-flight copter around l94l and the earliest service models were in use by both Army and Navy ( the air force then being part of the Army ) as the song reveals.) in l945-Known as the R-4. yhe designation R-4 probably referred to Rotary Wing ( the rotors) Sikorsky disliked the popular ( still seen in some newspaper or magazine captions)- term ( Wingless Wonders) for helicopters, and the word itself means rotary wing. Helix- plus Copter, derived from Pteron- like in Chiroptera ( Finger-wing) and Pterodactyl- Hand wing, that"s right Batman!

Helicopters need a helicopter pad to land on to ensure a safe and designated area that is clear of obstacles and hazards. Helicopter pads are designed to accommodate the specific landing and takeoff requirements of helicopters, including rotor wash and space for maneuvering. Additionally, these pads often provide a stable surface, reducing the risk of damage to the aircraft and ensuring a smoother landing and takeoff experience.

Judging by the data toward the bottom of this webpage, it seems the total number is around 60,000.

What is the limiting factor for helicopter speed you ask?

What happens to the rotor as the velocity of the helicopter increases? The relative speed of the tips of the rotors changes because of the wind speed. On the advancing side of the rotor the speed increases by the speed of the helicopter. On the retreating side of the rotor the speed decreases by the speed of the rotor.

One of two things happens as the helicopter reaches a high speed:

A: If it is a large rotor, the advancing blade will reach the sound barrier and sap energy from the rotor, slowing it. Significant damage may occur to the helicopter.

B: If it is a smaller rotor, the retreating blade will slow to the point where stall occurs, and the helicopter will be forced into a turn while losing altitude and decreasing speed, then it will usually recover if altitude permits.

Option B can be mitigated by increasing rotor RPM at higher speeds. In this case the rotor speed becomes the limiting factor, as the centrifugal forces at the root of the blade are quite incredible.

Carter

There were one.

A HSS-2 weighs 11,865 lb (5,382kg) when empty, and around 18,626 lb (8,449kg) when loaded.

The cost to obtain a helicopter license varies between locations, type of helicopter used, and prior training. The basic answer would be around $15,000.

25 and must learn with the british 360 aviation institution, london.

Igor Sikorski was well on the way with inventing the first practical helicopter then

The Chinook can fly at about 195 mph.

When a helicopter pilot plans to do a lot of low flying (or landing) in or near a residential area, it is common practice to call the local police force beforehand and inform them. You might try calling the local police departments non emergency line and asking.

It depends on the vehicle. Fuel tanks have various capacities.

They can pretty much land Any where

Igor Sikorsky co. did.

The Olmecs used spears, atlatls (spear thowers), and clubs.

There is some contention on this. In 1907 Jacques and Louis Breguet flew a contraption very similar in concept to a helicopter. However it did not fly higher than a foot or two and was so unstable that it had to be held at each corner. As a result, the Brequet brothers' flights cannot really be considered a "controlled manned flight."

The same year inventor Paul Cornu built and flew a similar machine with two counter-rotating rotors. This machine met with slightly more success, but was still not a practical flying machine.

Throughout the 1920s and 1930s several inventors experimented with various forms of helicopter each adding an innovation or two, and each claiming the title of "first helicopter." For details on this period, follow the link below for the wikipedia entry.

The first practical production helicopter was the Focke-Wulf Fw-61, it first flew in 1936

The answer to this question is not a simple yes or no. The speed of a helicopter depends on a variety of factors, such as the type of helicopter, the number of engines, the size of the rotor blades, and the weight of the aircraft. Similarly, the speed of an airplane depends on the type of aircraft, the number of engines, and the weight of the aircraft.

Generally speaking, most helicopters are not as fast as airplanes. Most helicopters have a top speed of around 160-200 mph, while airplanes can reach speeds of 400-600 mph. However, there are a few exceptions. Some helicopters, such as the Eurocopter X3 and the Kamov Ka-50, are capable of reaching speeds of up to 300 mph. Additionally, some high-performance fighter jets can reach speeds of up to Mach 2.

In addition to speed, helicopters have the advantage of being able to take off and land vertically, whereas planes require a runway or other flat surface. This allows helicopters to land in places that planes can't, such as on the side of a mountain or in a dense forest. This makes helicopters more versatile than planes and can be very useful in certain situations.

Overall, helicopters are not as fast as airplanes, but they do have certain advantages that make them more useful in certain situations. In the end, it really depends on the mission and the situation.

A helicopter gets its lift from the powerplant turning the main rotor. An autogyro's main rotor is unpowered and simply windmills when the aircraft is propelled forward by the propeller. Since this is the case it is not possible for an autogyro to hover for more than a few seconds. Autogyros can takeoff and land in very short distances though, and are capable of very low speeds.

Whereas helicopters are very sophisticated machines and can be very difficult to operate autogyros are much simpler mechanically and are very easy to control as they are inherently stable by design.

No.

J. T awston invented the helicopter (black male)

It seems technically possible, this book (below) on the UH60a suggests that sea based nuclear armaments were supposed to be part of this helicopter in an antisubmarine role but didn't go ahead. The thing is though I guess the armament would have to be at depth and low yield as helicopters can be brought down quite easily by turbulence and are quite slow, with a much higher attrition rate, therefore over land jets like the B2 with stealth capability would probably be more useful and less likely to be shot down before delivery.

http://books.google.co.uk/books?id=8MwyTX-iA2wC&pg=PA454&lpg=PA454&dq=helicopter+carry+nuclear&source=bl&ots=J0AGsmfQ_h&sig=ChnkwNiXit1r3nBJNuWtyLW5_ZU&hl=en&ei=6-XBSvLMMoav4Qamu9CLCA&sa=X&oi=book_result&ct=result&resnum=9&safe=active#v=onepage&q=helicopter%20carry%20nuclear&f=false

Helicopters use the same principle as aeroplanes to produce lift, the main difference is how they employ it.

As with planes a helicopter uses a aerofoil to produce lift by passing air over the top of a foil faster than under it due to the geometry of the foil. The pressure difference between the air flowing fast over the top of the foil(low pressure) and slow under the foil(high pressure) results in an upwards force on the rotors of the helicopter, the pilot can essentially control the amount of force(or lift) acting up by changing the speed of the respecting flows of air. This is done by changing the angle with which the aerofoil cuts through the air.

The spinning of the rotors produces a torque, which if left unbalanced would result in the helicopter spinning like a top and not producing enough lift. This torque is countered by a tail rotor usually or a contra rotating propeller (e.g. the chinhook)

obviously plane is faster dan helicoptor cz of its bird shaped structure makes it faster

wat i think

Helicopters in general do not do well at high altitudes. This is because of the lower air density at higher altitudes. Jet airplanes can fly at these heights only because they are going very fast. Helicopters are designed specifically for slow (or hovering) flight, and so have difficulty at high altitudes.

On first examination, one would think that you could overcome this problem by simply designing a helicopter with a faster-spinning rotor, but as helicopter rotors get to a certain speed, their lifting capability becomes spoiled by their own wake and things tend to get unstable. Many helicopters overcome the altitude limitations by simply having a larger diameter rotor to produce more lift from the thinning air, however the larger size also limits the helicopters usability as a rescue platform.

Additionally, rescue helicopters are usually equipped with a large amount of heavy medical equipment which further reduces their performance, helicopters which are specifically used for mountain rescue will be much lighter equipped. However it is often the case that an air-ambulance or other rescue helicopter has been co-opted into a mountain search and rescue and may find themselves overequipped/overweight for the job.