30 Questions
What is the primary advantage of electrically powered gyros over air-driven gyros?
They provide a more rigid gyroscopic reference
What is the main difference between electrical gyros and vacuum-driven gyros?
The type of stator used
What is the purpose of designing the rotor and its bearings in a specific way in electrical gyros?
To increase the radius of gyration and inertia
What type of motors can be used to create forces in attitude gyros?
Electrical torque motors
What is the purpose of a caging knob in a directional gyro?
To reset the gyro to the magnetic heading
What is the primary requirement of any gyroscope?
To have the mass of the rotor concentrated near the periphery
What is the limitation of pitch attitude in modern attitude gyro instruments?
85 degrees nose up or nose down
What components are used in electrically driven gyros that reduce the maintenance effort?
More solid-state components
Why should attitude and directional gyros be caged during aerobatic manoeuvres?
To avoid damage to the instrument
What is the purpose of the housing in the motor assembly?
To form the inner gimbal ring
What is the advantage of modern attitude gyro instruments?
They have high-speed, self-erecting mechanisms
What can supply air pressure or vacuum to air-driven gyro rotors?
An engine-driven pump or a venturi
What is the purpose of the course deviation bar on the horizontal situation indicator?
To display the offset distance from the selected track
What is the purpose of the heading bug on the horizontal situation indicator?
To show the desired heading
What is the source of the aircraft heading information on the horizontal situation indicator?
From different systems, including the inertial navigation system
What is the purpose of the flag with 'mag' or 'true' on the horizontal situation indicator?
To indicate the type of heading displayed
What is the additional feature that an Electronic Horizontal Situation Indicator (EHSI) may offer?
A moving map display with superimposed weather radar information
What is the representation of the aircraft on the horizontal situation indicator?
A small fixed symbol at the centre of the instrument
What happens to the precession force when the turning motion ends?
It is removed
What determines the direction of the pointer's movement?
The direction of turn
What is the purpose of the nozzle in the air-driven turn-and-slip indicator?
To direct air onto the rotor cups
What is the effect of an under-reading rate of turn on the rotor speed?
The rotor speed decreases
What is the function of the regulator in the air-driven turn-and-slip indicator?
To control the rotor speed
What determines the direction of the turn indicated by the pointer?
The position of the restraining spring
What happens when the aircraft is turning too fast for the bank angle?
The ball will move to the outside of the index marks
What is the primary indication of a slipping turn?
The ball drops below the index marks
What is the main difference between a turn coordinator and a turn-and-bank indicator?
The turn coordinator indicates rate of turn but indicates a turn more quickly
What does the rear view of an aircraft symbolize in a turn coordinator?
Alignment of the wings with the horizontal index marks
What is the result of an uncoordinated turn?
The aircraft will skid or slip
What is the purpose of a turn coordinator in small general aviation aircraft?
To replace the turn-and-bank indicator in a number of small types of general aviation aircraft
This quiz covers the principles of gyroscopes and gimbals in aircraft systems, including their design, operation, and functionality in aerodynamics. It explores the different types of gyros and their limitations, as well as the importance of caging and resetting devices. Test your knowledge of aircraft systems and aerodynamics!
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
