Helicoptors
Great people like Lenardo De Vinci were great people who knew how to make a lot of brillant things, but the most greatest invention is the helicoptor. Many people made the models, but they where missing something, how to make them fly. The break through came in the 19 century. They made it possible for somebody to make the great bird of the sky fly.
 

In the begginning of the 20th century people saw the pioneers experimenting and resolving many of the problems that appeared with each adavancement. The old saying of' " One step forward and two steps back", was the way that  the pioneers to get   themselves motavated.
 

Dissymmetry, the way to lift, the action that accured to cause some of the early models to flip over, made the early pioneers to worry about other models that would flip over. Until one day a machine called a swashplate with a cyclic pith that would help the
rotorblade the top of a helicoptor that helps it fly, would be able to make the central shaft fly up.
 

Except there were problems that had not been worked out on another helicoptor.Then on November 13,1907, a French  Pioneer named Paul Cornumade made a twin rotored helicoptor fly into the air for a few seconds. Afterwards another French person  named Etienne Oehmichen became the first to actually fly a helicoptor for 7 minutes and 40 seconds.
 

One of the more succesful people was a spanird by the name of Juan da la Cierva.His invention was named Autogyro,it was not a true helicoptor but it was very important. In 1936 a german helicoptor was made. This german helicoptors name was,
Focke Wulf Fw61, it was the first practical helicoptor in reality. Now vertical flight was not a dream anymore.
 

Later on another german by the name of Boris Yuriev made a helicoptor that would change how the others before him made,he made the first helicoptor that didn't need a swashplate to help it lift into the sky. It lasted for 1 hour and 50 seconds. It was then did the people know how to make the helicoptor without using the swashplate.
 
 Jorge Gazzola, Helicopter History Site, <http://helis.com >
 
   

North Shore Rescue < www.nortshorerescue.com.> last time there 3/11/05

 


Military helicopters


The blackhawk helicopter is used almost all the time for missions for the army. It is one of there best helicopters that has ever been made. It is used for missions, like to stop  drug attics, and it is  also  choosen  when soldries go into battle.  It is the most tactical  transport helicopter  that  replaced the UH 1" Huey."   The blackhawk has been enrolled in overall in the army.
Due to the battles, the blackhawk is the most common helicopter of all. It sometimes is used when trying to rescue people.
The blackhawk is in almost any kind of army. It is the bird of the sky.


Military< www.Military.com> last time there 3/11/05



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