Aircraft NAV WEEK 1

There are 360 longitude lines around the earth between 180 East and 180 West?
True
False
Where is the 0 longitude line located in the world?
Greenwich, United Kingdom
Paris, France
Washington, DC
Kansas, Missouri
The distance an aircraft is from the desired track is the __________.
Cross track
Track angle error
Drift angle
Desired track error
How are locations on Earth defined?
X,y coordinates
Waypoints
Latitude & Longitude
Place names
What reference is used for measuring latitude?
South Pole
Prime meridian
North Pole
Equator
What degree of latitude is the equator?
0 degrees
90 degrees
180 degrees
It has no value
How are parallels of latitude measured?
Degrees north of the equator
Degrees south of the North pole
Degrees east & west of the prime meridian
Degrees north & south of the equator
What reference is used for measuring longitude?
North Pole
South Pole
Equator
Prime meridian
What degree of longitude is the prime meridian?
0 degrees
90 degrees
180 degrees
It has no value
How are lines of longitude measured?
Degrees north & south of the equator
Degrees west of the prime meridian
Degrees east & west of the equator
Degrees east & west of the prime meridian
What is the maximum number of degrees that can be represented by longitude?
45 degrees
90 degrees
180 degrees
360 degrees
From where does the magnetic field of Earth originate?
Rocks on Earth's surface
Earth's outer core
Outer space
Earth's atmosphere
What causes the position difference between Earth's geographic poles and its magnetic poles?
Variations in the magnetic properties of aircraft materials
The tilt of Earth on its axis
The rotation of Earth about its axis
Variations in the composition of Earth's crust
What is variation?
Compass errors due to hard iron effects in the aircraft
Angular difference between the magnetic meridian and the true meridian
Difference between actual heading and indicated heading
Difference between heading and track
What simple (basic) instrument is used to provide direction & heading information in the aircraft?
Directional gyro
HSI
Magnetic compass
INS
What is the vertical line on the magnetic compass called?
Reference line
Lubber line
Heading line
Rubber line
What type of tool must be used when adjusting the compass compensating screws?
Soft iron compensating screwdriver
Magnetic compass screwdriver
Precision magnetic adjuster tool
Non-magnetic screwdriver
The direction which the nose of the aircraft is pointing is called what?
Track
Heading
Bearing
Vector
The angle between the direction of an object and another object is called?
Heading
Variation
Track
Bearing
What is a waypoint?
Any airport
A destination
A position in space identified by a latitude & longitude
A stopping point along a flight path
Reference the attached figure. What is represented by X?
Desired Track
Drift Angle
Track
Heading
Reference the attached figure. What is represented by X?
Desired Track
Track
Heading
Drift Angle
Reference the attached figure. What is represented by X?
Heading
Track
Actual Track
Drift Angle
What is the angular difference between the desired track and track called?
Cross track
Track angle error
Heading
Cross track error
If an aircraft is off course, the distance that the aircraft is from the desired track is known as…
Track angle error
Offset error
Drift angle
Cross track
Increasing the mass at the rim of a gyro and the rotational speed will increase what?
Compatibility
Rigidity
Flexibility
Reliability
There are two general types of mountings for gyros. What are the two called?
Free & Rigid
Free & Unrestricted
Universal & Restricted
Universal & Free
The tilting force that causes gyro precession is known as what?
Turn
Tilt
Topple
Torque
Wander in the vertical plane is known as __________________.
Variation
Drift
Torque
Topple
Wander in the horizontal plane is known as __________________.
Drift
Topple
Torque
Variation
Refer to attached image. What type of gyro is shown here?
Canted
Horizontal
Vertical
Semi-Rigid
Refer to attached image. What type of gyro is shown here?
Semi-Rigid
Horizontal
Vertical
Canted
What two properties of gyros are used in the construction and operation of aircraft instruments?
Real Wander & Apparent Wander
Rigidity in Space & Drift
Precession & Torque
Precession & Rigidity in Space
1
2
3
4
A gyro rotating at high speed will remain aligned in the plane in which it is spinning. This is know as...
Rigid alignment
Rigidity in space
Fixed displacement
Precession
If a force is applied to a spinning gyro, the effect is felt 90 degrees from the point of application, in the direction of rotation, and is known as...
Topple
Stabilization
Rigidity in space
Precession
A turn coordinator is commonly referred to as a _____________ gyro.
Free
Rate
Universal
Vertical
The Turn Coordinator is similar to the Turn Indicator except, it has it's Gyro canted at an angle of how many degrees?
90
60
30
15
The Turn Coordinator measures movement about two axis. What are they?
Roll & Pitch
Bank & Pitch
Roll & Yaw
Bank & Roll
Why is the magnetic compass supplemented with gyroscopic heading indicators?
Inherent errors
Pilot errors
Gyro errors
Gimbal errors
What type of indicators are not "north seeking" and must be manually set to the appropriate heading by reference to a magnetic compass?
Differential Gyro
Directional Gyro
Grid Gyro
Magnetic Gyro
Where is the Flux valve located on an aircraft?
Wing or Tail
Wing or Engine
Nose or Engine
Nose or Cockpit
Why do we need to be very cautious when handling Gyro instruments?
Very Robust
Very Sensitive
Semi -Rigid
Semi-Sensitive
How long after we "power off" the gyro do we have to wait until we can safely handle the component?
10 minutes
20 minutes
30 minutes
1 hour
Refer to attached image. What is the following instrument indicating?
Slipping left turn
Coordinated standard rate left turn
Skidding left turn
Normal left turn
Refer to attached image. What instrument is shown below?
Turn Indicator
Slaved Compass
Directional Gyro
Magnetic Compass
What is the purpose of the caging knob on the Directional Gyro?
Used to lock the gimbals, allowing rotation and alignment of the gyro to North
Allows the gyro to be switched between slaved mode and free mode
Used to cage or lock the gimbals, to prevent damage during transport
Allows for calibration of the gyro during compass swings
Refer to attached image. What heading is shown on the instrument below?
12 degrees
30 degrees
120 degrees
300 degrees
Refer to attached image. What component is shown below?
GPS antenna
Compass
Flux valve
OAT probe
What does the magnetometer do in a slaved compass system?
Provides rigidity in space for the DG
Senses True North
Senses Earth's magnetic field
Allows pilot to control the slaving functions of the DG
Why is a magnetometer more sensitive than a flux valve?
A magnetometer is able to automatically compensate for variation & deviation
A magnetometer senses both the horizontal and vertical components of Earth's magnetic field
A magnetometer is able to sense True North
A magnetometer has built in accelerometers
What does an Attitude Gyro provide an artificial representation of?
Earth's Horizon
Magnetic North
Absolute Altitude
True North
When the aircraft is operated in poor weather conditions, the flight crew will refer to this instrument to understand where the aircraft is with reference to Earth's horizon.
Altimeter
Turn Coordinator
Artificial Horizon
Directional Gyro
What type (orientation) of gyro is used in a artificial horizon indicator?
Rate gyro
Vertical gyro
Horizontal gyro
Spin gyro
A flux valve requires excitation to give an output. Where is this input coming from in an aircraft?
The inverter
The compass system power supply
The Radar system
The engine booster pack
A vertical gyro outputs _____________.
Heading information
Climb information
Yaw information
Pitch and roll information
In what system would you find a flux valve in an aircraft?
In a Radar system
Only found in the "back to the future" De Lorean
In the engine booster pack
In a slaved compass system
An artificial horizon or ADI uses a for reference.
Horizontal gyro
Air data computer
Vertical gyro
Flux valve
A gyro compass system uses a for reference.
Synchro
Vertical gyro
Air data computer
Horizontal gyro
An HSI gets magnetic heading information from _______________.
The slaving accessory
The flux valve
Air data computer
Horizontal gyro
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