| “The 
            airplane won’t amount to a damn until they get a machine that will 
            act like a hummingbird  Developed 
            for the British Royal Air Force , the Harrier is at the edge of aircraft 
            technology. It can fly at super sonic speed with an action ray of 
            400 miles (about 640Km - see Medidas). 
            The Mariners adopted this non-conventional bomber Fighter. Today it’s 
            so normal to see the Harrier doing things other planes can‘t, that 
            it’s easy to forget the long and difficult VTOL history. By the way, 
            VTOL means Vertical Take Off and Landing. That means a plane which 
            can behave like an helicopter, but the Harrier can do much more than  
            this. 
 A major problem was the changing 
            from vertical take off  to 
            conventional flight, and many systems were tried and left behind .The 
            question is that, during the transition, the engines stop providing 
            sustentation before the plane has enough speed for the wings to work 
            properly. Therefore the change in sustentation should follow the increase 
            of speed. And the Harrier solved the problem. The Harrier uses a system 
            of four pipes, that can send the engine power backwards or downwards, 
            under the pilot's command. The plane takes off with the pipes pointing 
            down and by turning them slowly backwards the transistion is made 
            easily. The pilot can choose a short run take off with adjsuting the 
            pipes angle to 60 degrees. This saves fuel for longer flights. | 
Assista aqui Documentario sobre o Harrier
Leia também a página Helicopters
Answer with "True" or "False" according to the text. 
     
1- The Harrier was the first plane to test the VTOL system.
2- The Harrier can only fly as fast as an helicopter.
3- The Harrier can do things other planes can't.
4- A big problem for vertical flight is the transition to normal flight.
5- The development of VTOL suystem was easy and fast.
6- The Harrier can't operate in Carrier Ships.
A frase de Thomas Edison foi:
   
     
 
    " O avião não valerá droga nenhuma até que 
    façam uma maquina que atue como um beija flor. 
    Que vá direto para cima,direto para baixo e pouse como um beija flor" 
  
