How often should helicopter engine compressor rinse be done in a coastal environment?
Engines on aircraft located near sea air environments but not directly exposed to sea air, in other words not within one-half mile of the coastline or less than 500 feet above the water during flight or ground operations, should undergo air compressor liquid cleaning at least every 15 days unless inspection reveals the …
How is the compressor of a turbine engine cleaned?
Compressor washing is exactly what it sounds like: cleansing the jet engine compressor of contaminants. This is done by using hot water or hot water mixed with a specialised detergent in order to dissolve, dislodge and remove contaminants.
What are two ways that compressors may be cleaned?
It could also be on up to a three- to six-month cycle.” Compressor wash procedures vary from manufacturer. A typical compressor wash involves three steps — a chemical wash, a water rinse, and an engine run.
What can be used to clean turbine engines?
One of the best ways to clean an engine as part of your aircraft engine maintenance is by flowing water, and possibly detergent, through the engine to clean the turbine blades and core. This reduces carbon build-up and increases operating efficiency.
At what point in a turbine engine is the temperature the highest?
Turbine Inlet Temperature (TIT)—the temperature of the gases from the combustion section of the engine as they enter the first stage of the turbine. The TIT is the highest temperature inside a gas turbine engine and is one of the limiting factors of the amount of power the engine can produce.
What does a compressor wash accomplish?
Compressor washing is a common gas turbine maintenance task. The adhesion of ingested particles together with oil or water on the compressor airfoils reduces the air flow and compressor efficiency, and consequently, the gas turbine power output and thermal efficiency.
What type of turbine does not drive a compressor?
7. What is meant by a free-turbine turboshaft engine? A turboshaft engine that has a turbine wheel or stage of turbine wheels that is not used to drive the compressor of the gas generator section of the engine. This free turbine drives the propeller in a turboprop engine or the transmission and rotor of a helicopter.
What are the two basic sections of any fuel system?
Aircraft fuel systems have two basic sections; airframe and powerplant. The airframe section consists of all the parts associated with storage and delivery, including the parts from the fuel tanks to the engine-driven pump.
What is turbine washing?
On-line wet cleaning is performed while the gas turbine is in operation and at load. The procedure involves the injection of a mixture of water and chemical detergent via atomizing spray nozzles positioned around the compressor air intake plenum.
What is the hottest part of a turbine engine?
The hottest component is the turbine blades, in particular the first-stage turbine inlet guide vanes, which are the most forward part of the exhaust section of the engine, which is the section exposed to the hot exhaust gases.
What is helicopter rotor wash?
Helicopters flying at low levels can create a vertical down wash of air (rotor wash) that becomes a surface wind which may spread fire along the ground. The red curve, labeled 30, represents the combination of height and speed which will most likely produce a 30 mph rotor wash effect.