Principles of Gas Turbine/Recip Operations
This cycle consists of four events occuring simultaneously; intake, compression, combustion, and exhaust.
A simple engine best suited for high speed/high altitude flights. Example include to F-4.
What is a turbojet
Pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere
What is Pascals law.
Thin film of lubricant that prevents metal to metal contact.
What is a squeeze film.
Two methods of accessories for gas turbine engines.
An opening that increase airflows velocity and decreases airflows pressure.
What is a Nozzle
Airflow that goes around a gas generator
What is Bypassed/Ducted air
Requires less current due to higher voltage and a ground neutral system.
What is AC power.
Fuel commonly used aboard ships due to its high flash point and low volatility.
What is JP-5.
Most common type of starter used on small gas turbine engines.
What is a DC electric motor.
The increase in air pressure that occurs when an aircraft is moving through the air
What is RAM effect
Engine where the propelled provides the majority of the thrust and impacts a small amount of acceleration to a large mass of air.
What is a turboprop engine.
Electromagnetic device that transforms direct current into alternating current.
What is an inverter.
The lowest temperature a combustible substance can ignite with a momentary application of a flame.
Occurs when a compressor RPM stabilizes below normal and turbine temperature remains within limits.
What is a false start.
Indicator used by aircraft that rely on the propulsive power of exhaust from tubrojets/fans.
What is the Engine Pressure Ratio Gauge (EPR)
Major components of the propeller assembly.
What are the blades, hub, pitch change/dome assembly.
Routes power to equipment devoted to the aircrafts intended mission.
What is a primary bus.
Thrust produced at the maximum continuous turbine temperature with a time limit.
What is the military rated thrust (MRT)
Term for when the engine is producing enough power to continue engine acceleration itself.
What is the self-accelerating speed.
From the inlet to the burner this characteristic increases drastically before dropping and returning to 0 at the exhaust stage.
What is pressure.
Two ranges of operations of a turboprop engine (and what they mean).
Alpha (flight range), Beta (Ground operations)
Components of a hydraulic system.
Reservoir, pump, check valve, pressure regulator, pressure relief valve, accumulator, pressure gauge, selector valve, hydraulic fuse, actuating cylinders, bypass filter.
Directs the flow of return oil into the fuel-oil heat exchanger to allow cooling to occur.
Three bleed systems of a dual-axial compressor engine.
What are the high pressure, low pressure, and inter-stage bleed air.