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jet-planes-how-they-work-queue The McDonnell Douglas F Eagle features a combination of inspired engineering and sophisticated on-board computers. What does it take to arrange a flyover? How does it happen? The underslung engines were found to be advantageous in the event of a propellant leak, and so the looked rather different from the Comet: the has a shape that is effectively the same as that of contemporary aircraft, with marked commonality still evident today for jet planes how they work queue with the fuselage and A single deck, swept wing, four below-wing engines. If the turbine and compressor jet planes how they work queue efficient, Jet Planes How They Work List the pressure at the turbine discharge will be nearly twice the atmospheric pressure, and this excess pressure is sent to the nozzle to produce a high-velocity stream of gas which produces a thrust. Print Citation. Cite this Article Format.

The air goes through the core of the engine as well as around the core. This causes some of the air to be very hot and some to be cooler. The cooler air then mixes with the hot air at the engine exit area.

A jet engine operates on the application of Sir Isaac Newton's third law of physics. It states that for every action, there is an equal and opposite reaction. In aviation, this is called thrust. This law can be demonstrated in simple terms by releasing an inflated balloon and watching the escaping air propel the balloon in the opposite direction. In the basic turbojet engine, air enters the front intake, becomes compressed and is then forced into combustion chambers where fuel is sprayed into it and Jet Planes How They Work 02 the mixture is ignited.

Gases which form expand rapidly and are exhausted through the rear of the combustion chambers. These gases exert equal force in all directions, providing forward thrust as they escape to the rear. As the gases leave the engine, they Jet Planes How They Work 10 pass through a fan-like set of blades turbine that rotates the turbine shaft. This shaft, in turn, rotates the Jet Planes How They Work Out compressor and thereby bringing in a fresh supply of air through the intake.

Engine thrust may be increased by the addition of an afterburner section in which extra fuel is sprayed into the exhausting gases which burn to give the added thrust. At approximately mph, one pound of thrust equals one horsepower, but at higher speeds this ratio increases and a pound of thrust is greater than one horsepower.

At speeds of less than mph, this ratio decreases. In one type of engine known as a turboprop engine , the exhaust gases are also used to rotate a propeller attached to the turbine shaft for increased fuel economy at lower altitudes. A turbofan engine is used to produce additional thrust and supplement the thrust generated by the basic turbojet engine for greater efficiency at high altitudes.

The advantages of jet engines over piston engines include lighter weight to go with greater power, simpler construction and maintenance, fewer moving parts, efficient operation and cheaper fuel. BANG In the combustion chamber, fuel is mixed with air to produce the bang, which is responsible for the expansion that forces the air into the turbine. Inside the typical commercial jet engine, the fuel burns in the combustion chamber at up to degrees Celsius.

The temperature at which metals in this part of the engine start to melt is degrees Celsius, so advanced cooling techniques must be used. The combustion chamber has the difficult task of burning large quantities of fuel, supplied through fuel spray nozzles, with extensive volumes of air, supplied by the compressor, and releasing the resulting heat in such a manner that the air is expanded and accelerated to give a smooth stream of uniformly heated gas.

This task must be accomplished with the minimum loss in pressure and with the maximum heat release within the limited space available. The amount of fuel added to the air will depend upon the temperature rise required. However, the maximum temperature is limited to certain range dictated by the materials from which the turbine blades and nozzles are made.

Since the gas temperature determines the engine thrust, the combustion chamber must be capable of maintaining stable and efficient combustion over a wide range of engine operating conditions. The air brought in by the fan that does not go through the core of the engine and is thus not used for combustion, which amounts to about 60 percent of the total airflow, is introduced progressively into the flame tube to lower the temperature inside the combustor and cool the walls of the flame tube.

Thus, the turbine has the task of providing power to drive the compressor and accessories. It does this by extracting energy from the hot gases released from the combustion system and expanding them to a lower pressure and temperature. To produce the driving torque, the turbine may consist of several stages, each employing one row of moving blades and one row of stationary guide vanes to direct the air as desired onto the blades. The number of stages depends on the relationship between the power required from the gas flow, the rotational speed at which it must be produced, and the diameter of turbine permitted.

The desire to produce a high engine efficiency demands a high turbine inlet temperature, but this causes problems as the turbine blades would be required to perform and survive long operating periods at temperatures above their melting point. These blades, while glowing red-hot, must be strong enough to carry the centrifugal loads due to rotation at high speed. To operate under these conditions, cool air is forced out of many small holes in the blade.

This air remains close to the blade, preventing it from melting, but not detracting significantly from the engine's overall performance. Nickel alloys are used to construct the turbine blades and the nozzle guide vanes because these materials demonstrate good properties at high temperatures. Nickel alloys are used to construct the turbine blades and the nozzle guide vanes because these materials demonstrate good properties at high temperatures General Introduction.

Jet Planes and WW2. How It Works. Other Useful Material. How The Jet Engine Works. Basic Overview The image above shows how a jet engine would be situated in a modern military aircraft.

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