Chapter 4 - Atmosphere Density Flashcards
1
Q
What is density
A
Concentration of molecules in a volume of air
2
Q
Low density does what
A
reduces a/c performance
3
Q
What happens to Density if Px increases
A
increases
4
Q
What happens to Density if Temp increases
A
Decreases because Px overrides
5
Q
What happens to Density if Humidity increases
A
Decreases because the water molecules muscle out the air ones
6
Q
75 % - height
50 % - height
25 % - height
A
10,000 feet
22,000 feet
40,000 feet
7
Q
Least favourable conditions are
A
High altitude
High Temp
High Humidity
8
Q
Density correction is
A
1 degree / 120ft = density correction
9
Q
If it’s colder than ISA what do we expect density to be?
A
Greater than ISA so subtract the LR for correct level
