NAV10

Question 1

Properties of an Ideal Map

Answer 1

1. Conformal
2. Constant Scale
3. Rhumb Lines Straight
4. Great Circles Straight
5. Adjacent Maps connect
6. Geographical Positions easily located
7. Surface features portrayed w true shape

Question 2

Describe Conical Projections

Answer 2

Lambert’s Conformal Conic
Standard Parallels line up with parallels of Latitude

Properties:
Conformal
Meridians are straight lines
Parallels are concentric
Great Circles are straight
Rhumb lines curve toward poles
Constant scale

Question 3

Describe Cylindrical Projections

Answer 3

Mercator Projections
Three types:
Normal
Oblique
Transverse

Properties:
Laterally Stretched
Rhumb line straight, GC curve
Conformal
Not a constant scale, stretches near the poles
Large land masses distorted

Question 4

Describe Azimuthal Projections

Answer 4

Flat Projections
Mostly Used for poles
Created from single point projecting tangentially
Accurate around Central Point, Distorting further it moved away

Question 5

Describe Properties of Aviation Maps and Charts

Answer 5

Latitude and Longitude Grid
Elevations in feet - contour lines
Constant Scale
Usually Lambert Conformal Projection
Centrally controlled - subject to update

Question 6

Describe application of various map types to AirPower

Answer 6

1. Situational Awareness
2. Effective Navigation
3. Flexibility
4. Progression to electronic based charting

Question 7

List Four IFR Charts

Answer 7

Erc High
Erc Low
TAC - Terminal Area Chart
PCA- Planning Chart Australia

Question 8

List Two Combined Charts

Answer 8

VNC - Visual Nav

VTC - Visual Terminal

Question 9

When do safety heights need to be determined

Answer 9

Outside 25nm from an airfield with MSA
Leaving non-licensed airfield w/o MSA
On track w/o a published LSALT

Question 10

Three Types of UTM Grid Coordinates

Answer 10

World Geographic System (GEOREF)
Universal Transverse Mercator (UTM)
Military Grid Reference Systems (MGRS)

Question 11

Whats the difference between:
Navaid
Waypoint
Placenames

Answer 11

NAVAID - 2 or 3 letter code, abbreviation of place name

WAYPOINT - used if location has no geographic features, comes with lat/long

PLACE NAME - literally name of a place