The U.S. Marine Corps and the Navy are currently operating some helicopters that go as far back as the Vietnam War. The do however go to be reworked. The CH-46 came out in 1964, it has been upgraded several times throughout it's life time. I believe the CH-46 are some of the oldest airframes still operating in the U.S. military. The CH-53 came out in 74' but new airframes were continued until as late as 1997. From there I'm not sure. The Marine Corp also operates some Specialty VH-3D's for Presidential Flight Duty whose airframes saw duty 35 years ago.
Hope this gives a little insight. These aircraft are kept in service a long time, but the maintenance is outstanding keeping them in tip top shape for years and years.
The military helicopter, also known as the Huey, are used for command and control, transportation, and also assault gunships. These helicopters are the most famous military helicopters.
Helicopters where used in several medical settings both Civil and Military. One of the most famous of these helicopters was the Bell H-13 Sioux most noted in the show M.A.S.H.
Military helicopters provide protect and are a great tool used to in warfare. There are many toy helicopters that are also fun for little children to play with but they can easily break.
Yes, helicopters were used in WW1. Don't be silly, helicopters were invented towards the end of WWII.
During the late 1940's
The Army has more helicopters than any other service - in large part because the only fixed-wing airplanes the Army is allowed to have are Beechcraft King Air planes that are used as executive transports and intelligence collection platforms.
Oil rig work, firefighting, military work, rescue tasks.
Piston engines on small private helicopters and jets on almost all commercial and military helicopterd
Most helicopters used a kerosene based fuel, such as Jet A, Jet B, or - in the case of military aircraft of NATO countries - JP-8. However, helicopters which use internal combustion engines will use standard 100 Low Lead petrol fuel.
what are the grey helicopters for
Most modern helicopters use jet engines.
Not really. The phrase "huey" actually refers to the Bell "Huey" family of helicopters based around the UH-1 and AH line of helicopters. At some points in military history, these helicopters were so widely used by American armed forces that some came to use the phrase for all helicopters in general, even though this is not necessarily the correct usage.