AVSC 3330 Exam | Questions and Answers Axial-flow compressors are less fuel efficient than Centrifugal-flow compressors. False The core of the gas turbine that generates expanding gases required to produce thrust is known as? The Gas Generator Why is the core of the turbine engine known as the G...
Axial-flow compressors are less fuel efficient than Centrifugal-flow compressors.
False
The core of the gas turbine that generates expanding gases required to produce thrust
is known as?
The Gas Generator
Why is the core of the turbine engine known as the Gas Generator?
It generates the expanding gases required to produce thrust
What do Gas turbine engines share jet propulsion principles with?
Party balloons that have been inflated and released
What is the forward-most compressor of a dual-compressor engine referred to as?
The low-pressure compressor
What is used to accelerate the velocity of the high-energy gases escaping from the gas
generator?
The nozzle
In an axial-flow compressor section of a turbine engine, what helps to direct and
compress the flow of air?
Stator vanes
What are the set of wheels called that are driven by the exhaust gases in the turbine
section of a turbine engine?
Turbines
The principle, for every action there is an equal and opposite reaction, comes from what
historical figure?
Isaac Newton
An axial-flow compressor is made up of an alternating series of _____.
Rotating rotor blades and stationary stator vanes
For large turbine engines what drives the starter motors?
High pressure air
What were the earliest jet engine types?
Turbojets
, Direct drive turboprop engines offer more immediate power response when power
levers are increased.
True
_____turboprop engine's propeller is not connected directly to the engine core, but
derives its torque from the power section added to the basic engine core after the
turbine section.v
A free-turbine
How are jet engines rated, with regards to output?
Pounds of thrust
How is bypass air measured on turbofan engines?
Pounds per second
A _____engine produces thrust solely by the high acceleration of air as it passes
through and exhausts the core of the engine.
Turbojet
The non-mechanical connection between engine core and propeller driveshaft, on a
free-turbine turboprop, is known as_____.
Fluid coupling
On a turbofan engine _____produces a great deal of thrust due to the highly efficient
design of the turbofan blades.
Bypass air
In a _____turboprop engine, the propeller is driven directly from the compressor shaft
through a reduction gear assembly.
Direct Drive
What phrase us used to describe the completion of an electrical circuit that runs through
the metal structure of an aircraft?
Ground
At approximately what psi do most hydraulic systems run on large turbine aircraft?
3000 psi
What devices or systems are powered by high pressure bleed air on a turbine aircraft?
Mark all that apply
Anti-ice
Pressurization
Engine Starters
Air Cycle Machines
When is electrical load shedding required in a turbine powered aircraft?
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