Helicopters

leonardo da vinci

ASME

Two

Airplanes run on special fuel that is designed for them. It is called Jet fuel. It is also called white Petrol.

No, a helicopter cannot go at the speed of Mach 1.5. It is because, this kind of propulsion can only be achieved through a jet engine. A helicopter's engine cannot achieve that.

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The creator is Sikorsky Aircraft Corporation, an American aircraft manufacturer based in Stratford, Connecticut.

the difference between an helicopter creating lift and an airplane creating lift is simple.

an airplane creates lift by moving forward and its wing that has an aerofoil shaped will create lift. this gives the lift for the airplane and to fly. for helicopters, instead of the aerofoil is fix like an airplane, the aerofoil wing is rotating and create lift. that is why the helicopter does not need to move forward to gain momentum to create lift. by rotating the aerofoil (the blade) the helicopter can creates enough lift to lift up the helicopter.and that's how it fly..

time for an helicopter to takeoff varies on types and model of the helicopter it self. this is because every helicopter or aircraft have their own check list provided by the manufacturer or operator depending on operation. this check list is for the pilot to go through during start up, taxing, take off, approaching and landings. again, time for each machine to take off varies.

As can be seen in the CBS television series M*A*S*H (1972-83), the Army used the Bell 47 helicopter. In the Korean War, the Army gave it the designator H-13Sioux. The Marines and Air Force also medically evacuated wounded personnel via helicopters.

I can't tell you how many helicopters were used for patient evacuation during the Korean War, but I can tell you a little bit about them. There were 4 different types of helicopters - the Bell H-13 Sioux is the one attached to the Army MASH units and can be seen on the M*A*S*H television series. The Marines were the first to transport the wounded to field hospitals and Navy hospital ships, and the Air Force transported over 2 million patients by the end of the war. The helicopter was able to get the wounded to help quickly and efficiently, thus saving tens of thousands of more lives than if the transport had been the same as during World War II.

A helicopter achieves thrust through its main rotor blades. The rotation of the blades creates a pressure difference, causing air to move downward and generating lift. By controlling the pitch and speed of the rotor blades, the helicopter can adjust the amount of thrust produced.

Ed "Too Tall" Freeman

The AH-64 Apache is a 4-blade, twin-engine is an attack military helicopter with a tailwheel-type landing gear arrangement, and a tandem cockpit for a two-man crew.

in the 1500's Leonardo Da Vinci drew one.....1784, Launoy and Bienvenue, french inventor created a toy that proved it was possible, however modern day helicopters are credited to Igor Sikorsky. Sikorsky's design is the design that all modern helicopters are based off of today.

Ranges from 250 to 450 rpm..

If there is need to increase the speed then the rpm is eventually increased as per the need

quite fast, there is more drag from the fuselage going side ways and it would be less stable

A place, area or platform within a wider area specifically designated for helicopters is a helipad; a specially created terminal and ground zone for helicopters is called a heliport.

Otherwise, helicopters can generally land whenever and wherever they need to, as long as there is enough space for the rotors to fit and enough fuel for them to get out again.

The rotors on a helicopter are slanted and shaped so that when the rotors spin air slips right under the rotor and get pushed down therefore creating lift.

It's main rotor, tail rotor makes the helicopter to move which is powered by it's engine. These are the major parts of a helicopter

Because their wings/rotors are able to create an upward force bigger or equal to the pull of gravity.

A helicopter's rotors are all powered, and a helicopter is capable of hovering. A gyrocopter is pushed forward by a powered propeller. However, the main rotor atop isn't powered by the motor - it's the wind which makes it spin, and that acts as the gyrocopter's wings.

Yes

Prior to the invention of war machines, horses (plus mules, oxen, elephants, dogs, etc.) pulled the guns (artillery), pulled the wagons, carried the men, etc. those animals that could do it all were called "workhorses" (at least the horses were). Helicopters in Vietnam did it all...fired rockets, fired gatling guns (called mini-guns), fired machineguns, rescued downed jet pilots, searched for downed airmen, picked up wounded men, picked up dead men, dropped off men everywhere; battle or general operations. Choppers even carried supplies, building material, tractors, boats, everything in Vietnam. Out of all those birds the UH-1 Iroquois (Huey) carried the most, the most times. Everything but what it could NOT carry such as heavy guns, tanks, or downed large aircraft. The UH-1 was rugged, produced in mass numbers, easy to maintain, was fast & reliable, and made a good gunship, medivac, and troop insertion aircraft. The Huey (minus what was mentioned above) could do it all...it was the workhorse of the Viet War.