When the L/D ratio becomes bigger, is this then good or bad?

Question

and how does this L/D work? When climbing, you have a lift ratio, and a drag ration. If lift ratio is 10, and drag ratio is 2, then L/D ratio is 5?

Answer 1

The higher the number, the better the efficiency: i.e. more lift, less drag. Read about it here: http://en.wikipedia.org/wiki/Lift-to-dra...