Question

For a flight altitude of 4000 m and a swath width of 2000 m, how far apart do the flight lines need to be if a sidelap of 30% is desired?

a) 1400 m
b) 1600 m
c) 1800 m
d) 2000 m

Answer 1

The distance between the flight lines should be 1400 m to achieve a 30% sidelap with a swath width of 2000 m. So, the correct option is A.

Step-by-step explanation:

To calculate the distance between flight lines for aerial photography with a desired sidelap, we can use the swath width and sidelap percentage. First, we find the sidelap in meters by multiplying the swath width by the sidelap percentage. Then, we subtract this from the swath width to find the distance between the flight lines.

The calculation is as follows:

• Sidelap in meters = swath width × sidelap percentage
• Distance between flight lines = swath width - sidelap in meters

Given a swath width of 2000 m and a sidelap of 30%:

Sidelap in meters = 2000 m × 0.30 = 600 m
Distance between flight lines = 2000 m - 600 m = 1400 m

Therefore, the correct answer is a) 1400 m.