EGTI
EGTI,
Example 1,
- aircraft travelling at same speed.
Two aircraft approach each other travelling at 420mph. They are 28 miles apart. How long before they collide?
Solution:
Because both aircraft are at the SAME speed of 420mph, each will travel maximum HALFWAY through the distance before colliding. In this case, they will each travel 14miles max to collide. So the time to collide will be
time = distance/speed
= 14/420 = 2minutes to collide!
Example 2,
- aircraft travelling at different speeds.
For the two aircraft approaching each other with one travelling at 500mph and the other at 400mph at say 30miles apart, one will be travelling faster than the other so will at the least go beyond the halfway distance to collide with the other so the need to calculate both speeds and find the time by using distance/speed.
Using the same calculation, total speed of both aircraft is 900mph (500+400), hence time is 30/900 which also gives 2 minutes!
Hope this helps!