TC 3-04.4 Fundamental of Flight

Question 1

What conditions must exists simultaneously for settling with power to occur?

Answer 1

A vertical or near-vertical descent of at least 300 feet per minute
Slow forward airspeed
Rotor system 20 to 100 percent of available engine power with insufficient power remaining to arrest the descent.

Question 2

What conditions are conducive to settling with power?

Answer 2

Steep approach at a high rate of descent
Downwind approach
Formation flight approach
Hovering above the maximum hover ceiling
Not maintaining constant altitude control during an OGE hover
During masking/unmasking

Question 3

How could an aviator recover from settling-with-power?

Answer 3

Initially arresting with sufficient power is an option, however, if done carelessly or too late could aggravate the situation
Directional flight to get out of the vertical descent and possibly lowering collective (altitude permitting)

Question 4

Dive recovery must be made prior to reaching computed VNE. What two aerodynamic phenomena are used to derive VNE for diving flight?

Answer 4

Retreating blade stall and/or compressibility