Ch 17 - Ground Effect Flashcards
1
Q
When does ground effect impact the aircraft
A
1 wingspan off the floor
Closer to the surface has greater effect
Can become a problem within half a wingspan
2
Q
Cause of Ground Effect
A
Down wash sheet reduced
Effective AoA increases
3
Q
Entering ground effect
A
Induced angle decreases Effective angle increases Induced drag decreases Lift increases Stalling AoA decreases ASI under reads
You then float and balloon
Nose pitches down as force on tail plane reduces
4
Q
Leaving Ground effect
A
Induced drag increases (total drag increases) Lift decreases Stalling AoA increases Nose pitches up (watch out for this) ASI returns to the correct value