Interstage Turbine Temperature (ITT) is the temperature of the exhaust gases between the high pressure and the low pressure turbines. The gas temperature is measured by a number of thermocouples mounted in the exhaust stream and is presented on a flight deck gauge in either degrees Fahrenheit or degrees Celcius.
What does ITT warning mean?
ITT is interturbine temperature. … But really, it’s just exhaust gases coming out of your turbine engine (measure between some turbine sections) after fuel and air is ignited and is normally indicated so you don’t over temp your engine.
What is EGT jet engine?
The EGT is the temperature of the gas turbine engine’s exhaust in degrees and indicates the performance status of the gas turbine engine’s design. High EGT values result in further deterioration and wear in the engines.
What is the engine of a jet called?
All jet engines, which are also called gas turbines, work on the same principle. The engine sucks air in at the front with a fan. A compressor raises the pressure of the air. The compressor is made with many blades attached to a shaft.
What is N1 in turbine engine?
N1 is the rotational speed of the low pressure turbine and compressor spool expressed as a percentage of the maximum normal operating RPM of the spool. N2 is the rotational speed of the high pressure turbine and compressor spool expressed as a percentage of the maximum normal operating RPM of the spool.
What is ITT stands for?
ITT is an initialism that stands for “in this thread.” It’s typically used on online forums, social networking sites, and message boards to describe or suggest a topic to be discussed in a particular thread.
Where is the ITT gauge located?
ITT = Interstage Turbine Temperature. A position somewhere between TIT and EGT. EGT = Exhaust Gas Temperature. The position just aft of the last turbine wheel.
Why are EGTS so important?
The exhaust gas temperature (EGT) pyrometer can be one of the most important gauges on a turbo-diesel-powered vehicle. It can warn the driver of situations that are potentially damaging to the engine, and it can also be used as a guide for optimizing fuel economy. Diesel engines are not indestructible.
What causes a high CHT?
It’s obvious that CHT increases when power is increased, and that it also increases when cooling airflow is decreased.
What is a good EGT temp?
For towing, we’d say a sustained 1,200 to 1,300 degrees is a safe number, with occasional spikes of up to 1,500 degrees when climbing grades being an acceptable risk. The concept of EGT is analogous to putting something in the oven. You can put your hand in a hot oven for a second or two, and nothing will happen.
How many rpm does a jet engine have?
For example, large jet engines operate around 10,000–25,000 rpm, while micro turbines spin as fast as 500,000 rpm. Mechanically, gas turbines can be considerably less complex than internal combustion piston engines.
How fast do jet engines spin?
It’s the small turbine blades that spin, and they’re connected to a shaft, which is connected to the compressor itself and the fan,” Attia explained. That turbine shaft spins around 20,000 RPM — which is really, really fast.
Which fuel is used in jet engine?
Jet fuel is a clear to straw-colored fuel, based on either an unleaded kerosene (Jet A-1), or a naphtha-kerosene blend (Jet B). Similar to diesel fuel, it can be used in either compression ignition engines or turbine engines.
Where does bypass air go?
The air moves through two parts of the engine. Some of the air is directed into the engine’s core, where the combustion will occur. The rest of the air, called “bypass air”, is moved around the outside of the engine core through a duct.
Is N1 fan speed?
Conceptually, N1 is the fan (or, fan speed) and is most related to your thrust (since the fan produces more thrust than the core on today’s big motors).
What is hung start?
A hung start occurs when the engine starts but doesn’t accelerate to idle speed. … In the absence of one of these, the engine will not start. You can usually identify the cause of this problem immediately: no indication of ignition or no fuel-flow indication.