Saturday 25 July 2015

How to draw helicopter for kids step by step

How to draw Helicopter for kids - step by step - Fact - A helicopter is a type of rotorcraft in which lift and thrust are supplied by rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward, and laterally. How to draw Helicopter - slide 1 How to draw Helicopter for kids - step by step - Fact - These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of VTOL (vertical takeoff and landing) aircraft cannot perform. How to draw Helicopter - slide 1 How to draw Helicopter for kids - step by step - Fact - Helicopters were developed and built during the first half-century of flight, with the Focke-Wulf Fw 61 being the first operational helicopter in 1936. Some helicopters reached limited production, but it was not until 1942 that a helicopter designed by Igor Sikorsky reached full-scale production, with 131 aircraft built. How to draw Helicopter - slide 1 How to draw Helicopter for kids - step by step - Fact - Though most earlier designs used more than one main rotor, it is the single main rotor with anti-torque tail rotor configuration that has become the most common helicopter configuration. Tandem rotor helicopters are also in widespread use due to their greater payload capacity. How to draw Helicopter - slide 1 How to draw Helicopter for kids - step by step - Fact - Coaxial helicopters, tiltrotor aircraft, and compound helicopters are all flying today. Quadcopter helicopters pioneered as early as 1907 in France, and other types of multicopter have been developed for specialized applications such as unmanned drones. How to draw Helicopter - slide 2 How to draw Helicopter for kids - step by step - Fact - The earliest references for vertical flight have come from China. Since around 400 BC,[8] Chinese children have played with bamboo flying toys. This bamboo-copter is spun by rolling a stick attached to a rotor. The spinning creates lift, and the toy flies when released. How to draw Helicopter - slide 2 How to draw Helicopter for kids - step by step - Fact - The 4th-century AD Daoist book Baopuzi by Ge Hong (抱朴子 "Master who Embraces Simplicity") reportedly describes some of the ideas inherent to rotary wing aircraft. How to draw Helicopter - slide 2 How to draw Helicopter for kids - step by step - Fact - This Chinese helicopter toy was introduced into Europe and appeared in Renaissance paintings and other works. Early Western scientists developed flying machines based on the original Chinese model. How to draw Helicopter - slide 2 How to draw Helicopter easy - step by step - Fact - It was not until the early 1480s, when Leonardo da Vinci created a design for a machine that could be described as an "aerial screw", that any recorded advancement was made towards vertical flight. How to draw Helicopter - slide 2 How to draw Helicopter easy - step by step - Fact - His notes suggested that he built small flying models, but there were no indications for any provision to stop the rotor from making the craft rotate. As scientific knowledge increased and became more accepted, men continued to pursue the idea of vertical flight. How to draw cartoon Helicopter - slide 3 How to draw Helicopter for Beginners - Fact - Many of these later models and machines would more closely resemble the ancient bamboo flying top with spinning wings, rather than Leonardo's screw. How to draw cartoon Helicopter - slide 3 How to draw Helicopter for Beginners - Fact - In July 1754, Russian Mikhail Lomonosov had developed a small coaxial modeled after the Chinese top but powered by wound-up spring device and demonstrated it to the Russian Academy of Sciences. It was powered by a spring and suggested as a method to lift meteorological instruments. How to draw cartoon Helicopter - slide 3 How to draw Helicopter for Children - Fact - In 1783, Christian de Launoy, and his mechanic, Bienvenu, used a coaxial version of Chinese top in a model consisting of a contrarotating of turkey flight feathers as rotor blades, and in 1784, demonstrated it to the French Academy of Sciences. How to draw cartoon Helicopter - slide 3 How to draw Helicopter for Children - Fact - Sir George Cayley, influenced by a childhood fascination with the Chinese flying top, grew up to develop a model of feathers, similar to Launoy and Bienvenu, but powered by rubber bands. By the end of the century, he had progressed to using sheets of tin for rotor blades and springs for power. How to draw cartoon Helicopter - slide 3 How to draw Helicopter for Preschoolers - Fact - His writings on his experiments and models would become influential on future aviation pioneers. Alphonse Pénaud would later develop coaxial rotor model helicopter toys in 1870, also powered by rubber bands. One of these toys, given as a gift by their father, would inspire the Wright brothers to pursue the dream of flight.[19] How to draw Helicopter easy steps - slide 4 How to draw Helicopter for Preschoolers - Fact - In 1861, the word "helicopter" was coined by Gustave de Ponton d'Amécourt, a French inventor who demonstrated a small, steam-powered model. While celebrated as an innovative use of a new metal, aluminum, the model never lifted off the ground. How to draw Helicopter easy steps - slide 4 How to draw Helicopter easy steps - slide 4 How to draw Helicopter easy steps - slide 4 How to draw Helicopter easy steps - slide 4

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