EAWS Aviation Communications and Navigation Systems 2

Question 1

What does the acronym TACAN stand for?

Accepted Answer

Tactical Air Navigation

Answer

TACAN stands for Tactical Air Navigation, a military UHF navigation system that provides bearing and slant-range distance to a ground or ship-based station.

Question 2

What two pieces of navigation information does a TACAN system provide to the aircrew?

Accepted Answer

Bearing and distance (DME)

Answer

TACAN provides the magnetic bearing to/from the station and slant-range distance via its distance measuring equipment (DME) function.

Question 3

The Instrument Landing System (ILS) consists of which two primary components that guide an aircraft to the runway?

Accepted Answer

Localizer and glide slope

Answer

ILS uses a localizer for lateral (left/right) alignment with the runway centerline and a glide slope transmitter for vertical (up/down) descent guidance.

Question 4

What is the primary operational advantage of an Inertial Navigation System (INS) over radio-based navigation aids?

Accepted Answer

Operation without any external signals or references

Answer

INS uses onboard accelerometers and gyroscopes to dead-reckon position from a known starting point, requiring no external transmissions and making it jam-proof.

Question 5

What unique capability does the Automatic Carrier Landing System (ACLS) provide to carrier-based aircraft?

Accepted Answer

Fully automatic approach and landing in zero-visibility conditions

Answer

ACLS uses a shipboard radar and data-link to provide fully automatic approach and landing guidance, allowing recovery in zero-zero visibility conditions.

EAWS - Enlisted Aviation Warfare Specialist Practice Test

EAWS - Enlisted Aviation Warfare Specialist Practice Test

EAWS Aviation Communications and Navigation Systems 2