Straight and Level

Question 1

In straight and level flight;

Thrust = Drag and Lift = Weight

Answer 1

True

Question 2

If the CoG is behind the CoP, the lift/weight couple will tend to pitch the nose (up/down)?

Answer 2

Up

Question 3

It is the function of the_____ to balance out the lift/weight and thrust/drag couples in flight.

Answer 3

Tail plane

Question 4

If the weight of the aircraft is decreased in level flight the stalling speed will be (increased/decreased)

Answer 4

Decreased

Question 5

With the an increase in altitude the power required curve moves up and to the _______

Answer 5

Right because TAS has increased

Question 6

Range can be defined as:

Answer 6

Maximum distance an aircraft can travel with a given amount of fuel

Question 7

Endurance is a measure of how long an aircraft can stay in the air on reserve fuel.

Answer 7

False

Question 8

Why do we fly at the minimum power speed for best endurance?

Answer 8

Power is directly related to fuel burn. Therefore power ↓ = fuel ↓ = ↑ Endurance

Question 9

During straight and level flight, if the power is reduced, the effect of the decrease in slipstream and power on a typical single engine aeroplane (DA40) will be:

Answer 9

Nose pitch down, yaw to the right, decrease in elevator/rudder effectiveness

Question 10

In a piston engined aeroplane, maximum range is achieved by flying at the indicated airspeed which:

Answer 10

Creates the minimum total drag

Question 11

For a typical A/C thrust acts (below/above) drag, therefore creating a nose (down/up) moment.

Answer 11

Below / up

Question 12

To fly at a slower airspeed

To fly at a faster airspeed

Answer 12

Power ↓ Attitude ↑,

Power ↑ Attitude ↓

Question 13

Why does Power available reduce, and not remain constant?

Answer 13

Losses due to propeller inefficiency

Question 14

An aircraft in straight and level flight is considered to be in equilibrium.

Answer 14

True’.

Question 15

The CoP (centre of pressure) can be defined as:

Answer 15

Point at which the lift forces acting on a body can be summarised to act through

Question 16

In a piston-engined aircraft, the least amount of power is required for steady straight and level flight:

Answer 16

At a lower speed than the minimum drag speed

Question 17

When lowering landing gear, the total drag line moves (upwards/downwards). This will create a (nose down/nose up) moment?

Answer 17

Downwards / down

Question 18

The drag at any aircraft weight and IAS remains constant regardless of altitude.

Answer 18

True’

Question 19

What is correct with regards to flying for Range when applying the following formula:

“Energy = Force x distance”

Where energy = fuel, force = thrust and distance = distance traveled

Answer 19

Energy (fuel) = Force ↓ x Distance ↑

Question 20

The best range speed (still air) is the speed for minimum drag. If altitude is increased, the best range speed is affected how?

Answer 20

IAS remains constant, TAS increases

Question 21

Endurance is defined as;

Answer 21

Time spent in the air with a given amount of fuel, regardless of distance

Question 22

Consider this C172, who has the International endurance record, flying for 65 days - nonstop. How would they best configure the aircraft?

Answer 22

Min power speed
Low rpm, mixture leaned
Lowest safe altitude
Low weight

Question 23

What changes in aeroplane control must be made to maintain straight and level flight whilst the airspeed is being increased from normal cruising speed?

Answer 23

Decrease the angle of attack to compensate for the increase in airspeed

Question 24

Why does Power available reduce, and not remain constant?

Answer 24

Losses due to propeller inefficiency

Question 25

What would the requirements be for an aircraft to fly for best range,

Answer 25

Low weight
Min drag speed
Flaps and gear up
Full throttle height 
Tail wind
Mixture leaned

Question 26

What happens to TAS (true airspeed) with an increase in altitude, when maintaining a constant IAS (indicated airspeed)?

Answer 26

Increases because density reduces, therefore to maintain the same IAS the aircraft must travel faster, therefore increasing TAS.

Question 27

With an increase in weight, the power required curve will move (Up/Down)

Answer 27

Up