Ch 20 - Descending And Gliding

Question 1

Flight Pitch Angle

Answer 1

Pitch angle plus the AoA

Always positive

% Gradient = (D-T)/W x100

Question 2

Gliding

Answer 2

%G = D/W x 100 (no thrust)

Depends on the excess of drag

Increased thrust = decreased descent gradient

Increased weight = no impact on glide

Question 3

Best Glide Angle

Answer 3

SPD Vmd
Clean configuration

Roughly 4 degrees

Question 4

Gliding for Distance / Gliding for Endurance

Answer 4

Distance = Vmd ~ 4 degrees (faster for heavier ac)

Endurance is based on rate of descent

Question 5

Glide Range

Answer 5

= Height x L/D ratio

Flaps or landing gear will decrease the glide angle

Question 6

Effect of Wind on Gliding

Answer 6

Headwind - Fly at Vmp (faster, nose down to be in the headwind for a lesser amount of time so that you go slightly further (decrease distance)

Tailwind - Slightly more range (Increase distance)

Question 7

Descending Angle

Answer 7

Sin Gamma = D - T / W