Nav 1

Question 1

Define dead reckoning

Answer 1

Directing an aircraft and determining its position by the application of direction and speed data from a previous position

Question 2

Four components of DR

Answer 2

• Position
• Direction
• Speed
• Time

Question 3

Define Position

Answer 3

A geographic point defined by coordinates

Question 4

Primary coordinate system used by aviators

Answer 4

Longitude/latitude

Question 5

Latitude

Answer 5

Angular distance north or south of the equator (parallels, measured from 0-90 degrees)

Question 6

Longitude

Answer 6

the angular distance of a place east or west of the prime meridian at Greenwich, England (meridians, measured from 0-180 degrees and labeled E or W, and ends at the international dateline)

Question 7

Define Direction

Answer 7

An angular distance from a reference. Measured from 001-360 degrees

Question 8

Where is magnetic North currently located

Answer 8

Hudson Bay, Canada

Question 9

The two compass systems in military aircraft

Answer 9

1. Remote Gyro Vertical Compass Card (Bearing Distance Heading Indicator, BDHI)
2. Stand-by compass

Question 10

Inertial Navigation System

Answer 10

• Measures angular position (or angular rate)
• Produces attitude and heading information
• Data is used for pitch and roll displays

Question 11

Describe the stand-by compass

Answer 11

• Direction is taken from a magnetic needle
• Called the “wet” compass
• Unstable during maneuvering
• Reliable due to independence from electrical system

Question 12

Ways Time can be expressed

Answer 12

1. Time of day (0800, 1450)

2. Elapsed time (2+30, 6+10)

Question 13

Define speed

Answer 13

The magnitude of the velocity of an aircraft. Stated in knots

Question 14

Instruments for DR

Answer 14

Primary:

• BDHI/Remote gyro vertical compass card
• Clock
• Airspeed indicator

Secondary:

• Altimeter
• Outside air temp

Question 15

List additional types of navigation

Answer 15

Visual navigation

Electronic navigation

Question 16

Describe visual navigation

Answer 16

Using ground references to determine current position or to provide steering cues to a destination.

Used by helicopters and low tactical aircraft.

Requires good visibility

Question 17

Describe Electronic navigation

Answer 17

Requires the use of electronic devices to determine position.

Question 18

List types of electronic navigation methods

Answer 18

• Ground stations (VOR, TACAN, ADF, VORTAC, etc)
• Transmitters (RADAR, DOPPLER)
• Self-contained (INS)
• Space-based

Question 19

Three categories of electronic navigation

Answer 19

1. Signals received from ground stations
2. Devices that transmit their own signals
3. Self-contained and requires starting inputs

Question 20

List ground station signals

Answer 20

VOR, TACAN, ADF, VORTAC, and VOR/DME

Question 21

List devices that will transmit their own signals

Answer 21

RADAR, DOPPLER

Question 22

List self-contained devices

Answer 22

INS

Question 23

Describe TACAN

Answer 23

A ground based system that provides the aviator with precise position information. Position is determined by providing a distance and magnetic bearing from a stationary ground station

Question 24

Air Vector

Answer 24

True Heading and True Airspeed

Question 25

Ground Vector

Answer 25

True Course or Track and Ground Speed

Question 26

Wind Vector

Answer 26

Direction and Velocity