Ground Effect Flashcards
1
Q
When does it start taking effect
A
Within 1 wingspan of the ground
2
Q
Entering ground effect
A
ASI under-reads due to cushions of air underneath the a/c effecting the static ports
Induced drag decreases
Lift increases which may cause ballooning
Stalling AoA reduces
Effective AoA increases
3
Q
Leaving ground effect
A
Induced drag increases
Lift decreases due to increased drag
Stalling AoA increases
Nose pitches up
ASI returns to normal value
4
Q
Ballooning
A
Un commanded climb associated with no nose up pitch
Can be dangerous due to the sudden increase in height close to stall speed
5
Q
Effect of ground effect on T tail
A
Minimal due to position of the elevator
6
Q
Total drag curve moves
A
Down and to the left
Vmd moves down
7
Q
Effect on the L/D ratio
A
Improves
