Question

The base length of the runway at the mean sea level (MSL) is 1500 m. If the runway is located at an altitude of 300 m above the MSL, the actual length (in m) of the runway to be provided is _________ (round off to the nearest integer).

Hint:

Altitude correction increases the actual length of the runway to accommodate thinner air, which affects aircraft performance during takeoff and landing.

Answer 1

Correct Answer: 1602

The actual runway length at an altitude can be calculated using the correction factor for altitude. The formula for the correction is: \[ L_{\text{actual}} = L_{\text{base}} \times \left( 1 + \frac{h}{1000} \right) \] Where:
- \( L_{\text{base}} = 1500 \ \text{m} \) is the base length of the runway at MSL,
- \( h = 300 \ \text{m} \) is the altitude of the runway above MSL.
Substituting the values: \[ L_{\text{actual}} = 1500 \times \left( 1 + \frac{300}{1000} \right) = 1500 \times (1 + 0.3) = 1500 \times 1.3 = 1950 \ \text{m} \] Thus, the actual length of the runway to be provided is: \[ \boxed{1950 \ \text{m}} \]