POF Q22 - Level Flight and the Climb

Question 1

In unaccelerated Level flight, we can say?

Pick all that apply

a.T=D

b.L=W

c.W=D

d.L=T

Answer 1

a.T=D

b.L=W

Question 2

The components that make up the Total Reaction are?

a.Lift which is perpendicular to the free stream flow and drag which is parallel to the free stream flow

b.Weight which is perpendicular to the free stream flow and Thrust which is parallel to the free stream flow

c.Thrust which is perpendicular to the free stream flow and drag which is parallel to the free stream flow

d.Drag which is perpendicular to the free stream flow and Lift which is parallel to the free stream flow

Answer 2

a.Lift which is perpendicular to the free stream flow and drag which is parallel to the free stream flow

Question 3

In which direction does the Weight of an aircraft act?

a.Parallel to the free stream flow

b.Vertically straight down

c.Always opposite to Lift

d.Perpendicular to the free stream flow

Answer 3

b.Vertically straight down

Question 4

Through which point of an aircraft does the weight force act?

Answer 4

Centre of Gravity

Question 5

The acceleration due to gravity (g) is said to be…

a.10m/s2

b.10m/s

c.9.81m/s2

d.9.18m/s2

Answer 5

c.9.81m/s2

Question 6

What is the Weight in Newtons of an aircraft with a mass of 62,000kg?

PLEASE DO NOT INCLUDE UNITS

Answer 6

608220

(62000x9.81)

Question 7

In which direction does the thrust component act of a jet aircraft?

a.opposing the drag force

b.along the longitudinal axis

c.through the centreline of the jet engine, opposing the RAF

d.parallel to the Horizontal

Answer 7

c.through the centreline of the jet engine, opposing the RAF

Question 8

Lift in level flight is the sum of

a.weight and drag

b.weight and the downforce of the tailplane

c.weight and thrust

d.mass and downforce of the tailplane

Answer 8

b.weight and the downforce of the tailplane

Question 9

With regards to the Lift-Weight couple and Thurst-Drag couple, why is an underslung engine advantageous?

a.An underslung engine when thrust is increased produces a nose-up pitching moment which counteracts the moment created by the Lift-Weight couple

b.An underslung engine does is not advantageous as it creates a nose-up pitching moment when thrust is increased which increases the AoA closer to the critical angle of attack.

c.An underslung engine when thrust is increased produces a nose-down pitching moment which counteracts the moment created by the Lift-Weight couple

d.An underslung engine when thrust is increased produces a nose-down pitching moment which adds to the moment created by the Lift-Weight Couple

Answer 9

a.An underslung engine when thrust is increased produces a nose-up pitching moment which counteracts the moment created by the Lift-Weight couple

Question 10

The Best Angle of Climb is useful for

a.take off to climb over objects far away from the end of the runway.

b.climbing to clear a nearby object.

c.climbing to an altitude as quickly as possible.

d.for covering a large ground distance quickly

Answer 10

b.climbing to clear a nearby object.

Question 11

Place the correct labels into the image

Answer 11

angle of attack
flight path angle
pitch angle

Question 12

The flight path angle is defined as: the angle between…

a.the aircrafts path through the air and the local horizontal

b.the aircrafts longitudinal axis and the Relative Air Flow

c.The local horizontal and the Relative Air Flow

d.the aircrafts longitudinal axis and the horizontal

Answer 12

a.the aircrafts path through the air and the local horizontal

Question 13

Which of the options is correct for an aircraft in a steady climb?

a.T = W / (D + sin 𝛾 )

b.W = (T-D) / sin 𝛾

c.T = D - W sin 𝛾

d.D= T - W sin 𝛾

Answer 13

d.D= T - W sin 𝛾

Question 14

Lift acts perpendicularly to the Relative Air Flow. In a steady level climb the Lift component is exactly equal and opposite to the component of weight acting perpendicularly to the RAF. This can be expressed by which of the below equations?

a.L = 1 / W sin 𝛾

b.L = W

c.L = W sin 𝛾

d.L = W cos 𝛾

Answer 14

d.L = W cos 𝛾

Question 15

In a steady climb which of the following statements is true?

a.Lift is greater than weight

b.Lift is equal to weight

c.Lift varies with the sine of weight

d.Lift is less than weight

Answer 15

d.Lift is less than weight

Question 16

An aircraft in level climb at constant IAS and Angle of attack, what happens to the angle of climb?

a.It reduces

b.It remains constant

c.It increases

d.The angle of climb will only change with a change in IAS.

Answer 16

a.It reduces

Question 17

What is the main threat of climbing at a constant pitch attitude?

a.the aircraft could enter an overspeed situation

b.Excess thrust reduces and an immediate descent must be initiated

c.the thrust component increases and therefore if more power is applied the aircraft may enter an uncontrollable nose up attitude

d.airspeed will reduce and eventually lead to a stall.

Answer 17

d.airspeed will reduce and eventually lead to a stall.

Question 18

The most dangerous autopilot setting to use in a climb is Vertical Speed Mode.

Select one:
True
False

Answer 18

True