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A conventional jet engine produces its thrust in large part due to the heated gasses escaping out the rear of the engine. While this is very useful for aircraft which fly at high speeds and high altitudes, it is less desirable for aircraft which are designed to fly at slower speeds and take off from smaller runways.
A turboprop engine is a jet engine which converts the bulk of its thrust into rotational energy for powering a propeller. This allows jet engines, which are a high-rpm low-torque engine to be used in situations where low-rpm and high-torque are needed instead.
The higher reliability and efficiency of a jet or turboprop engine as compared to an internal combustion engine makes them very desirable for aircraft designs which, in the past, would have utilized internal combustion engines.
Answer 2A turboprop is a jet engine with a propellor attached - a jet engine is a turbine (fan) that compresses a large volume of air for combustion in a chamber as a opposed to a piston - a turbo charger on steroids - the propellor is attached to the central shaft of the fan blades - the two exhaust tubes on either side of the front of the turboprop are for the jet exhaust and it actually can add to the speed of the aircraft - the jet engine is usually backwards on a turboprop, the air intake under the engine is sent to the back which is really the front of the jet turbine, compressed by the fan blades (which drive the propellor) then sent to the combustion chamber where it is mixed with fuel and ignited - then exits through the exhaust tubes which bend to point backwards adding to the total thrust of the engineOften the word turboprop is confused with turbo charged which is a regular piston engine that uses a turbo charger (air compressor) - the P-38 lightning twin boom fighter of WW2 is a great example of a turbocharged engine and once you hear the sound the turbo chargers make you never forget it
Turbo prop engines address a need for a compromise between propellor and jet engines - propellors are efficient at slow speeds to about 350 mph (meaning the amount of fuel used for speed and range) and dont have as much power as a jet - jets are effecient from about 300mph up and are more powerful than a piston engine but use more fuel - a turbo prop has nearly the power of a jet without as much fuel use and fills the gap for a mid range speed of about 200 to 400 mph - rarely see turboprops on low speed aircraft because of the extra fuel use with exception of some STOL bush style aircraft like the Cessna caravan and the new quest kodiak that need the extra power for short/rough field use
Also turbo props can reverse thrust like a jet engine but do so usually by changing the angle of the propellor blades - another big advantage over piston engines for short runways - also turboprops use jet fuel since they are jet engines so they are being used more frequently in countries outside USA where avgas is becoming hard to find (not much general aviation aircraft but lots of jet airliners in many countries)
A big advantage to using turboprops is how long they can be flown before a complete overhaul - the time can vary a lot by engine but an average time for a piston engine is about 1800 to 2000 hours and a turbo prop about 3000 to 3600 hours - so you can fly a turboprop a whole lot longer between major overhauls.
Wiki User
∙ 8y ago
Wiki User
∙ 15y agoa jet engine that has a propeller which makes is slower but more fuel efficient
Wiki User
∙ 12y agoit is a type of jet engine but they have fixed a propeller to it it is not as fast as a conventional jet but saves much more fuel often found on short haul or regional flights
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Why do turboprop engines use extra turbine stages to extract more energy from combustion gases?
Fuel efficiency. If you can extract, say, 200 horsepower from a certain amount of fuel with one wheel, and 400 horsepower from the same fuel with two wheels, you'd be stupid to not put the second wheel in the engine.
Are planes and jets the same?
What we typically call a "jet" is simply a plane with a jet engine as opposed to a propeller.There are four common types of 'jet' engine:1) turbojets - rare, first-generation, short range/high specific fuel consumption2) turbofans - the standard on airliners-a jet drives a ducted fan that acts like a propeller3) turboprop - a turbine engine coupled to a propeller4) turboshaft - a turbine engine coupled to a transmission, typically in a helicopter but also used in large stationary pumps and generatorsThe only significant difference between 3) and 4) is the application. The Pratt & Whitney PT-6 and PT-6T are ubiquitous engines that is used in both applications...same for the Rolls-Royce (Allison) 250 series.
What is the function of Gas Turbine Generator?
Gas turbines are engines. Gas turbines, turboprops and turboshafts all work similarly--the engine turns a fan; the air coming off the engine's fan turns another fan, which is connected to a shaft that does the work you bought the engine to do. In fact, the most popular turboprop engine--Pratt & Whitney's PT-6--is also available set up as a turboshaft or a gas turbine. The gas turbine has a few advantages over the diesel engine. First, it's lightweight. General Electric will sell you a 33,000 horsepower gas turbine that weighs 10,000 pounds; Pielstick will sell you a 7000 horsepower diesel that weighs 70,000 pounds. Second, it's very reliable. And third, it can run on many kinds of fuel. Gas turbines own the natural gas pumping industry because they'll run on natural gas, which is right there--just run a little pipe from the gas main to the fuel control on the engine, and you're in business. The disadvantage of a gas turbine is it won't speed up very quickly. If you have a ship with a gas turbine in it, that's not a big problem--ships accelerate slowly no matter what kind of engine they have, just because they're big and have to push water out of the way. If you're pumping natural gas you don't care about acceleration at all--the engine is always going to run at the same speed. But this slow acceleration is one of the reasons they're not good car engines. (The major reason they're not good in cars is if you don't know how to start a turbine engine you'll destroy it; gasoline engines are much more difficult to harm that way.)
How does a turboprop work?
A simple turbine.Air is drawn into the engine continuously and compressed by a series of rotating blades. Fuel is sprayed into the combustion chamber and burnt increasing the gas temperature to around 1200C.The hot high pressure gas expands through a second set of blades mounted on the same shaft as the compressor blades. The energy of the gas is partially expended powering the compressor, but has a residual energy which is either expended as a hot jet (resulting in thrust) or which drives a further independent set of blades to power a propeller or other device.see http://www.rolls-royce.com/education/schools/how_things_work/journey02/index.html
What does a propeller do on a turboprop airplane engine?
The propeller on a turboprop airplane engine spins to move the aircraft through the air. It acts in a way similar to that of the blade in a fan.
What is the name of an aircraft engine in which a turbine drives a propeller?
turboprop
What type of fuel does a turboprop engine use?
jet fuel
When was the Turboprop engine developed?
The worlds first Turboprop engine was designed in 1928 by a mechanical engineer named Gyorgy Jendrassik. He patented the engine in 1929 and in 1938 built a small scale prototype.
What kind of airplane will seat twenty people?
Business jet, turboprop.
What happens when a turboprop plane flies through a cloud layer?
i want your answer
Can you bring carry on baggage on a De Havilland Dash 8 Turboprop?
no
How fast can a turboprop plane fly from Los Angeles to New York?
Calculate the distance in nautical miles (1.15x) and calculate given the KIAS of the turboprop aircraft that you are looking at. Possible KIAS = 250-300 kts.
What is the category of king air BE 20?
Twin engine, turboprop, for general aviation.
What is the Cessna 406 used for?
The Cessna 406 is a twin turboprop executive transport.
What is airplane engine called?
Piston, turbojet, turbofan, turboprop to name a few.
Why most of aircrafts in Airforce are turboprop?
Most of the aircraft in the US Air Force are not turboprops but jets. The C-130 is the most prominent turboprop, and they use it because it can fly from undeveloped runways--gravel roads or even grass fields.
