Click here for the previous lessons, to learn about: Principle of Airframe; Principles of Aerodynamics; Airfoil Characteristics; Primary Flight Control Surfaces; Description and Operation of Helicopter; Miscellaneous Components of an Aircraft…
Turbojets. The basic idea of the turbojet engine is simple. Air taken in from an opening in the front of the engine is compressed to 3 to 12 times its original pressure in compressor. Fuel is added to the air and burned in a combustion chamber to raise the temperature of the fluid mixture to about 1,100°F to 1,300° F.
Why do fighter jets use turbojet engines?
Because of the large jet velocity than can be achieved, turbojets generate large thrust and can be used to propel aircraft to high velocities.
Gas turbine aircraft engines such as turbojets, turboshafts and turbofans often use air/pneumatic starting, with the use of bleed air from built-in auxiliary power units (APUs) or external air compressors now seen as a common starting method. Often only one engine needs be started using the APU (or remote compressor)
The jet engine's major components are the intake, compressor, combustor, turbine, and exhaust.
A jet engine works on the physics concept of conservation of momentum. Momentum is the mass of something multiplied by how fast it is travelling, so things with lots of momentum are hard to stop.
What is the most important part of the jet engine?
Compressor: It is one of the most important parts of the engine, as it determines how much air can be compressed and how efficiently the engine can produce thrust.
There are two main types of compressors used in jet engines: axial compressors and centrifugal compressors.
What is the difference between a turbine engine and a jet engine?
Answer and Explanation: A turbine engine is a type of internal combustion engine that is used to power a rotating shaft. On the other hand, a jet engine is an air-breathing jet propulsion engine that uses the high speed of air to compress incoming air and fuel, which then ignites with an explosive mixture.
Most modern planes are powered by jet engines (more correctly, as we'll see in a moment, gas turbines). What exactly are these magic machines and what makes them different from the engines used in cars or trucks? Let's take a closer look at how they work!
What is a jet engine?
A jet engine is a machine that converts energy-rich, liquid fuel into a powerful pushing force called thrust. The thrust from one or more engines pushes a plane forward, forcing air past its scientifically shaped wings to create an upward force called lift that powers it into the sky.
That, in short, is how planes work—but how do jet engines work?
Jet engines and car engines
One way to understand modern jet engines is to compare them with the piston engines used in early airplanes, which are very similar to the ones still used in cars. A piston engine (also called a reciprocating engine, because the pistons move back and forth or "reciprocate") makes its power in strong steel "cooking pots" called cylinders. Fuel is squirted into the cylinders with air from the atmosphere. The piston in each cylinder compresses the mixture, raising its temperature so it either ignites spontaneously (in a diesel engine) or with help from a sparking plug (in a gas engine). The burning fuel and air explodes and expands, pushing the piston back out and driving the crankshaft that powers the car's wheels (or the plane's propeller), before the whole four-step cycle (intake, compression, combustion, exhaust) repeats itself. The trouble with this is that the piston is driven only during one of the four steps—so it's making power only a fraction of the time. The amount of power a piston engine makes is directly related to how big the cylinder is and how far the piston moves; unless you use hefty cylinders and pistons (or many of them), you're limited to producing relatively modest amounts of power. If your piston engine is powering a plane, that limits how fast it can fly, how much lift it can make, how big it can be, and how much it can carry.
More Aviation subjets on https://www.chkod.com/
This is an Aerospace engineering concerned with the development of aircraft and spacecraft, focused on designing aeroplane and space shutlle and it is a study of all the flying wing used within the earth's atmosphere. Also dealing with the Avionic systems that includes communications, navigation, the display and management of multiple systems. Also dealing with Aircraft mishap such as Accident and Serious Incident.
#aviation_jobs#aviation_courses#aviation_topic#aviation_study#aviation_basic
This is an Aerospace engineering concerned with the development of aircraft and spacecraft, focused on designing aeroplane and space shutlle and it is a study of all the flying wing used within the earth's atmosphere. Also dealing with the Avionic systems that includes communications, navigation, the display and management of multiple systems. Also dealing with Aircraft mishap such as Accident and Serious Incident
