How Jet Engines Work

birds fly by pushing air mankind has made many things that push air one of the greatest machines that push air is the jet engine jet engine suck air in the front and push a jet of air out the back that force is called thrust and it moves an airplane through the sky let's see how it works a big fan at the front of the engine pulls air around the engine and sucks air into the core we'll come back to that outside air in a moment for now let's follow the air in the core it goes into a compressor something like many household fans join together each fan gets smaller and smaller because the blades squeeze the air into a tighter and tighter space compressing here like you would squeeze a balloon until that squeezed air is mixed with jet fuel a kind of super gasoline in the combustor that air and fuel mix your meat aflame and shoes out the back of the engine the rush of hot air spin the turbine de turbine is like a windmill that scoops up energy from the heated air and spins the shaft connected to the fan at the front of the engine the excess hot air from the combustor blows out the back of the engine producing thrust remember that air rushing outside the engine course together the turbine and fan push a larger mass of air than the core ever can't for much more thrust but that extra air passing around the engine core works more efficiently if it moves more slowly than the hot air rushing out the combustor and the back of the engine one of the first engine makers Pratt and width recently designed a new jet engine that lets the fan push air more slowly than the turbine by putting an amazing gear between them pratt & whitney called this the pure power engine because it uses less fuel and makes more thrust at the same time less fuel save money and cuts back on pollution which is better for the environment and all living things and when the fan moves slowly the noise drops so much you can barely hear the airplane in the sky it's a new design for jet engines and a new era for jet airplanes that we all can enjoy [Music] Oh

Channel: Pratt & Whitney

Views: 1,353,480

Rating: 4.8642263 out of 5

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Id: x8DK4rM6Y90

Length: 3min 12sec (192 seconds)

Published: Fri Aug 18 2017

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