Performance

Question 1

Thrust from a propeller is greatest when the aeroplane is?

Answer 1

stationary

Question 2

shaft power/brake power =

Answer 2

indicated horsepower - frictional losses

Question 3

thrust horsepower is?

Answer 3

brake horsepower accounted for propeller inefficiency

Question 4

power required is directly related to the

Answer 4

total drag

Question 5

For a prop aeroplane, best range is achieved at what speed?

Answer 5

The speed for minimum drag, or, the best lift/drag ratio speed

Question 6

The speed for best endurance is the speed that requires?

Answer 6

the minimum amount of power, or, Vmp.

Question 7

The speed for best rate of climb can be found at the speed for

Answer 7

the best lift/drag ratio

Question 8

Relevant to the power curves, the best angle of climb speed is found?

Answer 8

where the distance between thrust available and thrust required is greatest

Question 9

Relevant to the power curves, the best rate of climb speed is found?

Answer 9

where the distance between power available and power required is greatest

Question 10

The trig formula for angle of climb

Answer 10

sin = T - D / W

Question 11

Regarding climb performance:

any increase in weight will result in a -

Answer 11

flatter flight path with a reduced rate of climb at a higher speed.

Question 12

The trig formula for the gliding angle is

Answer 12

Tan = D / L

Question 13

The best glide speed will always be found at the speed for -

Answer 13

maximum lift/drag ratio

Question 14

Does an increase in weight affect the gliding angle

Answer 14

No, since it depends on the lift/drag ratio.

Note: The lift/drag ratio is independent of weight. An increase in weight needs a corresponding increase in total lift and, consequently, a greater lift and drag will result. The proportions remain exactly the same and the L/D ratio and glide angle thus remain unaltered.

Question 15

Does an increase in weight affect the gliding time?

Answer 15

Yes

Question 16

the centre seeking force of a spinning object is called?

Answer 16

centripetal force

Question 17

the opposite and equal force to centripetal force is called?

Answer 17

the centrifugal force

Question 18

For aerodynamics, centripetal force is called?

Answer 18

the horizontal component of lift

Question 19

Centripetal force is directly ? to the ? of the body, the ? of its ? and ? proportional to the ? of the turn.

Answer 19

Centripetal force is directly proportional to the mass of the body, the square of its speed and inversely proportional to the radius of the turn.

Question 20

Steep turns are considered to be in excess of

Answer 20

45 degrees

Question 21

Centripetal force in pounds =

Answer 21

W V^2 / g r

Question 22

How to calculate the stalling speed in a turn?

Answer 22

New stalling speed = Old stalling speed x square root of load factor

Question 23

How to calculate the load factor in a turn with a bank angle of 30?

Answer 23

load factor = n(1) / cos 30

Question 24

during a glide, the distance flown compared to increased weight, remains?

Answer 24

Unchanged

Question 25

A heavier aircraft will have a higher(vmd speed)?

Answer 25

maximum lift/drag ratio airspeed

Question 26

In a glide, added weight will reduce?

Answer 26

The glide endurance

Question 27

The ROC speed with altitude will -

Answer 27

increase