Facts (Part 4)

Question 1

Define density altitude for high and low altitudes

Answer 1

High altitudes have a low density of air, and low altitudes have a high density of air

Question 2

What is the relationship between air density and drone performance?

Answer 2

The thinner the air (less density) the worse the performance of the drone

Question 3

What is a weather front?

Answer 3

When cold air hits warmer air and the division between the two is a front

Question 4

What is wind shear?

Answer 4

Sudden drastic changes in wind speed – they can happen at any altitude?

Question 5

What is structural icing?

Answer 5

When ice forms on the part of the UA or wings – you need some type of precipitation for this to happen - must be below 0 degrees celsius

Question 6

What is the lifecycle of a thunderstorm?

Answer 6

Cumulus, Mature, Dissipating – mature is the most dangerous – during dissipating stage, downdrafts can occur

Question 7

What is the relationship with humidity and UA?

Answer 7

Humidity makes the air hazy and decreases visibility

Question 8

What type of air is the most unstable?

Answer 8

Hot and humid air

Question 9

Where is turbulence caused?

Answer 9

It is caused in air that is unstable and showery

Question 10

What are the characteristics of stable air?

Answer 10

Poor visibility and steady rain