Piston Engines
This part attaches the engine to the airframe.
What is the engine mount?
The part that compresses air in a turbojet engine.
What is the compressor?
The curved top and flat bottom define this shape.
What is an aerofoil?
The purpose of any propulsion system is to create __.
What is thrust?
This is a key disadvantage of variable pitch propellers that affects maintenance.
What is increased maintenance complexity and cost?
The cowling's main aerodynamic purpose.
What is to streamline airflow?
What a turbine does with hot exhaust gases.
What is spin the turbine?
The angle between the chord line and relative airflow.
What is angle of attack?
Newton’s law that explains thrust (F = ma).
What is Newton’s Second Law?
Instrument showing altitude above sea level.
What is the altimeter?
Number of blades typically on a training aircraft propeller.
What is 2 or 3 blades?
This engine has no moving parts and needs assisted takeoff.
What is a ramjet?
This force opposes thrust.
What is drag?
This engine combines a fan with a jet for better low-speed thrust.
What is a turbofan?
Measures climb or descent rate in feet per minute.
What is the VSI?
This type of propeller allows the pilot to adjust blade angle.
What is a variable pitch propeller?
This engine powers most modern helicopters.
What is a turboshaft engine?
This force keeps aircraft in the air.
What is lift?
This part of a piston engine is shaped like a wing.
What is a propeller blade?
Uses rigidity in space to show pitch and roll.
What is the attitude indicator (AI)?
This is a key disadvantage of variable pitch propellers that affects maintenance.
What is increased maintenance complexity and cost?
This bypass system design increases thrust without extra fuel in turbofans.
What is a bypass ratio or ducted fan system?
This advanced term describes the aerodynamic twisting of a propeller blade.
What is propeller washout or geometric twist?
The name for a propeller’s twist from hub to tip.
What is propeller washout?
This system failure renders the VSI and altimeter unreliable.
attitude indicator (AI)?What is static vent blockage?