Formulas | Aerodynamics

Question 1

Load factor =

Answer 1

lift / weight

Question 2

Wing loading =

Answer 2

Aircraft weight / wing area

Question 3

Static pressure(p) =

Answer 3

N/m2

Question 4

The unit for air density:

Air density(rho) =

Answer 4

kg / m3

Question 5

KE =

Answer 5

1/2 rho x v2

Question 6

Bernoulli’s theorum:

Answer 6

Static pressure + Dynamic pressure = constant`

Question 7

Dynamic Pressure(q) =

Answer 7

1/2 rho v2

Question 8

How to calculate turn radius -

Answer 8

Turn radius = TAS squared(m/s) / (g x tan bank angle)

Question 9

knots to m/s -

Answer 9

0.5144

Question 10

Finding load factor with bank angle -

Answer 10

Load Factor = 1 / cos bank angle

Question 11

Approximately how long does it take to fly a complete circle during a horizontal steady co-ordinated turn with a bank angle of 45° and a TAS of 200 kts?

Answer 11

First find turn radius:

200 x 0.5144 = 100 m/s

Turn radius = TAS squared / 10 x tan bank angle

10 000 / 10 x tan45 = 1000m

Now find turn diameter:

1 000m x 2

= 2 000m

Now find circumference:

2 000 x 3.14 =

6280m

Now find time:

6280 / 100 m/s = 62.8s