Chapter 4 : Vector Triangle

Question 1

A vector has 2 elements -

Answer 1

Magnitude and Direction

Question 2

Velocity has 2 elements -

Answer 2

Speed and Direction

Question 3

Velocity vector represented by -

Answer 3

Direction of line drawn represents direction of Velocity vector and length of line drawn represents magnitude of velocity vector.

Question 4

Types of Velocity vectors -

Answer 4

• Air Vector
• Wind Vector
• Ground Vector

Question 5

Air Vector -

Answer 5

Speed and Direction of a/c relative to air.

Question 6

QB: 2 elements of Air vector -

Answer 6

• TAS (True Air Speed)

- True Heading / Course

Question 7

What is True Air Speed?

Answer 7

Actual speed of a/c relative to the air.

Question 8

What is True heading?

Answer 8

True direction to which aircraft is pointing.

Question 9

QB: Convention w.r.t. Wind Direction -

Answer 9

Wind direction is direction that wind is blowing FROM

Question 10

Wind Vector -

Answer 10

Speed and direction FROM which wind is blowing

Question 11

QB: 2 elements of Wind vector -

Answer 11

• Wind Speed

- Wind Direction

Question 12

Ground Vector -

Answer 12

Speed and Direction of A/c over the ground.

Question 13

QB: 2 elements of Ground vector -

Answer 13

• Ground Speed

- Ground Direction / Track

Question 14

Ground Vector is resultant of -

Answer 14

Air vector and Wind vector.

Question 15

In No Wind Condition; Ground Vector =

Answer 15

Air Vector

Question 16

Symbol for Heading -

Answer 16

Single arrow, Indication of direction TO which A/c pointing.

Question 17

Symbol for Wind -

Answer 17

Three arrows, Indication of direction FROM which Wind blowing.

Question 18

Symbol for track -

Answer 18

Two arrows, Indication of direction of A/c moving over ground.

Question 19

QB: Drift -

Answer 19

Angle between Heading and Track

Question 20

QB: Port Drift -

Answer 20

• Track lies to LEFT of heading

- Drift SUBTRACTED to Heading to obtain Track

Question 21

QB: Starboard Drift -

Answer 21

• Track lies to RIGHT of heading

- Drift added to heading to obtain track.

Question 22

6 elements of Triangle of Velocities -

Answer 22

• Heading
• TAS
• Wind Direction
• Wind Speed
• Track
• Ground Speed

If 4 known, 2 can be determined.