2: (56) Airplane Instruments, Engines, and Systems Flashcards
What is pitch setting?
The propeller blade setting determined by the blade angle measured in a manner, and at a radius, specified in the propeller’s instruction manual.
The reason for variations in geometric pitch (twisting) along a propeller blade is that it…
permits a relatively constant angle of attack along its length when in cruising flight.
Maximum structural cruising speed is the maximum speed at which an airplane can be operated during…
normal operations.
What is an advantage of an electric turn coordinator if the airplane has a vacuum system for other gyroscopic instruments?
It is a backup in case of vacuum system failure.
The best power mixture is that fuel/air ratio at which…
the most power can be obtained for any given throttle setting.
In aircraft equipped with constant-speed propellers and normally-aspirated engines, which procedure should be used to avoid placing undue stress on the engine components? When power is being…
increased, increase the RPM before increasing the manifold pressure.
Fouling of spark plugs is more apt to occur if the aircraft
gains altitude with no mixture adjustment.
What effect, if any, would a change in ambient temperature or air density have on gas turbine engine performance?
As temperature increases, thrust decreases
The most probable reason an engine continues to run after the ignition switch has been turned off is…
a broken magneto ground wire.
Fuel/air ratio is the ratio between the..
weight of the fuel and the weight of the air entering the cylinder
What will occur if no leaning is made with the mixture control as the flight altitude increases?
The density of air entering the carburetor decreases and the amount of fuel remains constant.
A propeller rotating clockwise as seen from the rear, creates a spiraling slipstream. The spiraling slipstream, along with torque effect, tends to rotate the airplane to the…
left around the lateral axis, and right around the longitudinal axis
Which statement is true about magnetic deviation of a compass? Deviation…
varies for different headings of the same aircraft
True airspeed is best described as calibrated airspeed corrected for…
altitude and nonstandard temperature.
what is positive limit load factor ?
the greatest amount of load that can be placed on the aircraft without risk of structural damage
