what is the function of the aircraft engine?

Question

its purpose and the effect it has on the plaine

Answer 1

The engines produce the movement forward (the velocity), which produces the air flow around the wings, which produces movement upward (the lift).

Answer 2

Wow, so these people weren't very helpful...or right.. (some of them were right, just not thorough).

Ok so when the engine is running, it turns the propellor (obviously). But this alone does not cause airflow over the wings. Not even close. I mean come on, the airflow from the prop hardly causes air to move a foot away from the fuselage. But yes, it does produce thrust... this thrust makes the airplane move, which is actually what causes the airflow over the wings producing lift. And there are some negative effects also, which one of the guys above was getting to. Imagine one of those small handheld fans. If you hold the fan blades, what happens? The part you are supposed to hold roatates, intstead of the blade. The same also holds true for the aircraft. When sitting in the cockpit, say when you are loking out at the rotating prop, the prop is rotating clockwise... the counter effect is the aircraft has a force acting on it that makes it want to turn counterclockwise. So when he said the engine is offset, that is the manufacturer's way of compensating for what is called the torque effect. There are some other factors that add to this turning tendency, but they are unrelated to your question, so I won't get into them.

So to sum it up, the engine produces the thrust that causes the airflow over the wings...

Also, it does have some other responsibilities. Just as the engine in your car, it also turns a belt that is connected to the alternator, producing and electrical current to supply to the aircrafts electrical system. However, unlike a car, the aircrafts spark plugs are not run by the electrical system or the airplane battery. They are powered by the aircrafts magnetos. Magnetos are magnets that are spun by the power produced by the engine to supply power to the sparkplugs. So basically, you do not have to have a battery to start an airplane engine. But if you didn't have the electrical system or battery, you would be unable to start the engine from inside the airplane (nor would you have electrical power to run some of the systems in the plane, but besides the point). Older aircraft actually started this way normally. Technically, if the magnetos are engaged, and there is fuel in the engine, and someone were to move the prop fast enough, the engine would start. It's a concept that is taught in aviation at all levels, and it is the reason for some of the post flight procedures to prevent this from happening because of the danger associated with it.

So that is basically it. There may be some things I missed, but yeah. I'd say that's pretty thorough.

Answer 3

The engine is to move the aircraft throught the air. The effects it has on the aircraft/airframe are many: torque -- from the driveshaft/propeller (if it's piston powered/propeller driven), vibration -- an unwanted side effect generally associated with piston powered aircraft, weight -- in design one must first know the weight of the prospective engine so that you may then balance out your craft, angle of attack -- dependent upon the powerplant utilized, it is sometimes necessary to point the crankshaft slightly off direction (5 degrees down and 5 degrees to the right of center) to attain best performance. I'm sure there are more, but this all I can think of right off the top of my head. Also, the engine may be utilized to power onboard electrical systems/devices and hydraulics.

Answer 4

Mainly the aircraft engine is to provide propulsion for the aircraft.

On turbofan aircrafts the turbine engine generates electricity and provides pressurization for the cabin. Pressurization is achieved by drawing air from the compression stage but before the fuel injection stage. The air would be really hot since it has been compressed so it needs to be cooled with air conditioning packs before flowing into the cabin.

Answer 5

Just as you have an engine in a car that provides its power to move, the aircraft engine does the same for an aircraft.

Answer 6

Its purpose is to convert the fuel on board into forward thrust. This is done by burning the fuel in the engine & creating forward thrust by either driving a propeller or a large fan on the front of a jet engine.

Answer 7

An air compressor is a machine that uses an electric motor or gas engine to power a device that sucks in successive volumes of air from the atmosphere, compresses (squeezes) each volume of air in a confined place to increase its pressure by making the volume smaller, and then transfers the high-pressure air to a receiver tank, according to the EnergyTechPro educational website. The high-pressure air is drawn off from the receiver tank to power equipment.

Answer 8

Is this a wind-up??

It's purpose is to generate thrust. It has the effect of allowing the aircraft to take off and remain airborne.

Answer 9

The engine drives a big fan in the front of the airplane. Its purpose is to keep the pilot cool. If you don't believe it, when it stops, watch the pilot sweat !

Answer 10

it creates thrust to push the plane. so airflow can move over and under the wing to substain it in flight. without thrust and lift an aircraft wont get off the ground.