Jet engine & heavy engine are same?

Question

Jet engine & heavy engine are same?

Answer 1

i have never heard the term heavy engine. industrial, automotive, aircraft, race, jet, these are all terms i have heard.

Answer 2

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Answer 3

In commercial aviation the word "heavy" is used to describe large wide body aircraft.  They are usually powered by large high bypass turbofan engines.  I've never heard of them described as heavy engines.  

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Answer 4

There is no such thing as a "heavy engine."

Answer 5

Do you mean "heavy fuel"?  That implies an engine running on diesel or other fuel.  But not gasoline/kerosene.

It's possible that a turbofan could use "heavy fuel", but none that are in development.

Answer 6

the term heavy engine is non exsistant all planes will either run off of props, turbo props or turbo fans aka "jet" engines.

Answer 7

You know, some of those

engines are pretty darn heavy.

Answer 8

The term "heavy engine" is meaningless, so no answer is possible.

Answer 9

The official term for an aircraft engine is called a powerplant.

All heat engines have in common the ability to convert heat energy into mechanical energy, by the flow of some fluid mass through the engine. In all cases, the heat energy is released at a point in the cycle where the pressure is high, relative to atmospheric.

These engines are customarily divided into groups or types depending upon:

(1) The working fluid used in the engine cycle,

(2) the means by which the mechanical energy is transmitted into a propulsive force, and

(3) the method of compressing the engine working fluid.

The types of engines are illustrated below:

Engine Type Major Means of Compression Engine Working Fluid Propulsive Working Fluid

Turbojet. Turbine-driven compressor. Fuel/air mixture. Same as engine working fluid.

Turboprop. Turbine-driven compressor. Fuel/air mixture. Ambient air.

Ramjet. Ram compression due to high flight speed. Fuel/air mixture. Same as engine working fluid.

Pulse-jet. Compression due to combustion. Fuel/air mixture. Same as engine working fluid.

Reciprocating. Reciprocating action of pistons. Fuel/air mixture. Ambient air.

Rocket. Compression due to combustion. Oxidizer/fuel mixture. Same as engine working fluid.

Engines are further characterized by the means of compressing the working fluid before the addition of heat.  The basic methods of compression are:

(1) The turbine-driven compressor (turbine engine).

(2) The positive displacement, piston-type compressor (reciprocating engine).

(3) Ram compression due to forward flight speed (ramjet).

(4) Pressure rise due to combustion (pulse-jet and rocket).

Power and Weight

The useful output of all aircraft powerplants is thrust, the force which propels the aircraft. Since the reciprocating engine is rated in b.hp. (brake horsepower) and the gas turbine engine is rated in pounds of thrust, no direct comparison can be made.  However, since the reciprocating engine/propeller combination receives its thrust from the propeller, a comparison can be made by converting the horsepower developed by the reciprocating engine to thrust.

If the weight of an engine per brake horsepower (called the specific weight of the engine) is decreased, the useful load that an aircraft can carry and the performance of the aircraft obviously are increased.  Every excess pound of weight carried by an aircraft engine reduces its performance.  Tremendous gains in reducing the weight of the aircraft engine through improvement in design and metallurgy have resulted in reciprocating engines now producing approximately 1 hp. for each pound of weight.