Airplane Instruments, Engines, and Systems Flashcards
Calibrated airspeed is best described as indicated airspeed corrected for
installation and instrument error.
In aircraft equipped with constant-speed propellers and normally-aspirated engines, how to avoid placing undue stress on the engine components?
Increase the RPM before increasing the manifold pressure.
How should you establish climb power after takeoff in an airplane equipped with a constant-speed propeller ?
first decrease manifold pressure and then decrease RPM.
Propeller efficiency is the
ratio of thrust horsepower to brake horsepower.
To develop maximum power and thrust, a constant-speed propeller should be set to a blade angle that will produce what ?
small angle of attack and high RPM.
A detuning of engine crankshaft counterweights is a source of overstress that may be caused by
rapid opening and closing of the throttle.
What is positive limit load factor ?
the greatest positive load that may be placed on the aircraft without risk of structural damage.
How should the blade angle of a controllable-pitch propeller should be set at takeoff ?
small angle of attack and high RPM.
Maximum structural cruising speed is the maximum speed at which an airplane can be operated during
Normal Operations (Vno)
A fixed-pitch propeller is designed for best efficiency only at a given combination of
airspeed and RPM.
True airspeed is best described as calibrated airspeed corrected for
altitude and nonstandard temperature.
Structural damage or failure is more likely to occur in smooth air at speeds above what speed ?
Vne
To establish a climb after takeoff in an aircraft equipped with a constant-speed propeller, the output of the engine is reduced to climb power by decreasing manifold pressure and
decreasing RPM by increasing propeller blade angle.
What is an operational difference between the turn coordinator and the turn-and-slip indicator? The turn coordinator
Indicates roll rate, rate of turn, and coordination; the turn-and-slip indicator indicates rate of turn and coordination. (ie. both provide rate-of-turn and coordination)
When referring to a constant speed propeller, the pitch setting is
varied in flight by a governor maintaining constant RPM despite varying air loads.
Which statement best describes the operating principle of a constant-speed propeller?
The propeller control regulates the engine RPM and in turn the propeller RPM.
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 vertical axis, and to the left around the longitudinal axis.
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.
Which statement best describes the operating principle of a constant-speed propeller?
The propeller control regulates the engine RPM and in turn the propeller RPM.
What should you avoid that places undue stress on an engine equipped with a constant-speed propeller ?
low RPM and high-manifold pressure.
The uncontrolled firing of the fuel/air charge in advance of normal spark ignition is known as
preignition.
You are flying an aircraft equipped with an electronic flight display and the air data computer fails. What instrument is affected?
Airspeed indicator.
Fuel/air ratio is the ratio between the
weight of fuel and weight of air entering the cylinder.
Which statement is true about magnetic deviation of a compass? Deviation
varies for different headings of the same aircraft.
The horizontal dashed line from point C to point E represents the
postive limit load factor
Detonation occurs in a reciprocating aircraft engine when
the unburned fuel/air charge in the cylinders is subjected to instantaneous combustion.
The best power mixture is that fuel/air ratio at which
the most power can be obtained for any given throttle setting.
