POF tuesday

Question 1

Hing moment =

Answer 1

Distance between hinge and force (D)
x
Force that’s opposing the pilots input (F)

Question 2

Internal Balance

Answer 2

Hinge moment rotating as positive static pressure presses against the seal to get to the negative pressure. As it presses the beak of the hinge moves up or down. Increasing the force the pilot can have on the controls

Question 3

Balance tab

Answer 3

Reduces the overall aerodynamic force pilot has to deal with.

Question 4

Anti balance tab

Answer 4

Increases force pilot has to put into controls. Happens if controls are too light

Question 5

Servo tab

Answer 5

Power Operated in high speed

In low speed, spring is flexible and allows direct control of surface area

Question 6

Torsional Aileron Flutter (oscillation)prevented by

Answer 6

Having extra mass added forward of hinge line, prevents flutter

Question 7

Total reaction is basically the same as

Answer 7

Aerodynamic force, but taking into account the bend of airflow

Question 8

Friese ailerons

Answer 8

Exposed mass on up going aileron. Causing form drag

Question 9

Differential ailerons

Answer 9

Aileron deflected more than other. Creates greater form drag

Question 10

Outboard ailerons

Answer 10

Not used in high speed. As drag from it could cause adverse yaw. So inboard aileron / spoilers used (on one side. Spoiler roll).

Question 11

Aileron droop

Answer 11

Ailerons sat at a drooped attitude to improve camber at the trailing edge.
Positive camber = greater lift

Question 12

Trim trims excess aerodynamic force. It also works by

Answer 12

Horizontal stabiliser leading edge adjusting pitch, to assist with lift/AOA.

Question 13

Load Factor =

n

Answer 13

L/W

Question 14

n is (in climb)

Answer 14

Less than 1

Question 15

n is (in straight + level flight)

Answer 15

1

Question 16

Rate of Climb (ROC) =

Answer 16

(T-D / mass.kg) X TAS (feet per min)

Question 17

CG =

Climb gradient

Answer 17

(T-D/W) x 100