PERF question...
Evenin all, I know it's a lot to ask on a Friday night (or any night) but any takers for the following?
In the climb an aircraft has a thrust to weight ratio of 1:4 and a lift to drag ratio of 12:1.
While ignoring the slight difference between lift and weight in the climb, the climb gradient will be??
(ans 16.7%)
I know that gradient is (T-D) / W but apart from that I'm totally stumped however I rearrange these numbers!