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What is the relationship between number of propellor blades to the horse power of the ships engine?
Wiki User
∙ 14y ago
Without delving into fluid dynamics or excessive physics, a simple explanation: The relationship lies in the specifics of an individual ship. Most ships run diesel engines, which provide large amounts of torque at low rpm (more fuel economical). Though any sized prop will move a ship, more blades will produce a higher thrust, which is more efficient when using an engine with high torque. For commercial purposes gasoline engines are sometimes used to allow higher rpm. In this situation a prop with high thrust (more blades) will be less efficient, as the engine would not produce enough torque to redline (top speed). Note: Diesel fuel will not produce enough vapour below about 122F or 50C to ignite, however gasoline will and is commonly regarded as being more dangerous for use on board vessels.
Wiki User
∙ 14y ago
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What was the relationship between the steam engine and the coal mine?
The steam engine needs coal, the coal comes from the coal mine
What the swirl on the nosecone of a jet engine?
It makes it easier to determine if the blades are still moving.
What does a turboprop do?
Answer:The combination of the words turbine and propeller in techno jargon will give you the word "turboprop". A turboprop engine is a turbojet (gas turbine) engine, which powers the propeller/s. 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 engine Often 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 itTurbo 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 useAlso 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.
What is the estimated price for a Honeywell HTF7000 engine?
Not much considering they are presently grounded due to faulty fan blades manufactured in Mexico
What are the materials of parts of Boeing 747?
Anything from Aluminum for the wings, Titanium for the engine's fan blades, to Fabric for the seat cushions and rubber for the tires.
What is a multi-bladed propeller?
An aircraft that has more than 2 propellor blades per engine. Multi-blade engines usually included the capablity to vary the pitch of the propellor in order to pull more air. Multi-engine aircraft are aircraft with more than 1 engine.
How did the wright brothers work in their bicycle shop?
They built bicycles. This is why their airplane used bicycle parts (sprockets and chains) in the drive train between the engine and the propellor shafts.
Where do airplanes get thrust from?
It depends on the plane. But most planes use huge turbines powered by jet engines. On a modern turbo fan engine, the blades of the turbine push vast quatities of gas out of the combustion chamber, providing thrust. On a propellor driven aircraft, the thrust is created by the blades of the propellor, angles to push air backwards when turned, like a screw. You also get upward thrust created by the shape of the wings. Air flows faster over the top of the wing due to it's curved shape. This causes lower pressure than the underside, giving an upward thrust.
Why won't engine start after engine stopped with blades engaged this is a john deere riding mower.?
Turn your blades off.
How does a planes rise?
the blades in the engine start running
Why is a B777 fan blade fixed as suppose to adjustable?
The fan blades of the high-bypass turbo-fan jet engine typically are fixed. These are the large blades that are visible from the front of the engine and provide 80% of the engine's thrust by pushing air back over the core of the engine. The blades internal to the engine are also fixed but the stators are usually adjustable, depending on the power settings. The stators are the "blades" that protrude into the engine from the outside wall. Why? The fan blades are exposed to a lot of loads and they would be too large and heavy if they were designed to be adjustable. On some engines, the blades have a flange that support each other to almost for a solid ring. I'm not sure about the fan blades on all engines, but the GE CF6 has fan blades that simply slide into a slot; there is not bolt or anything locking it in place. The blades are loose when the engine is not turning. When the fan windmills slowly in the breeze, the blades actually "clank" when the flop from one side to the other as each blade passes over the top.
What was the relationship between the steam engine and the coal mine?
The steam engine needs coal, the coal comes from the coal mine
How many blades will make a propeller go fastest?
It's the engine that makes the propeller go fast, not the number of blades.
What makes the blades on a lawn mower work?
The engine, I think
Mower quits when blades are engaged?
The reason the mower dies when the blades are engaged can be caused by a couple of different things. One, the spindles for the blades are frozen so the blades can't turn stopping the engine. Two, the fuel system isn't allowing sufficient fuel/air flow when the engine is put under a load.
How many gallons to fill up a truck with a V8 engine?
There is no direct relationship between the number of cylinders in an engine and the size of its fuel tank!
What are the parts of a engine in a helicopter?
The main parts are the turbine compressor and blades.
