Question

What effect does a "coordinated turn" have on maneuvering loads?

Answer 1

First let's see the forces acting on a plane when doing a coordinated turn:

During a coordinated turn the lift required to balance the airplane weight to keep a constant altitude is:

Where the angle is the bank angle. Hence the ratio of lift to weight is:

This ratio is always grater than 1 since cos(theta) < 1. This ratio is also known as load factor and it is and important factor to take into account at the moment of designing an airplane. It is representative of the maximum load an aircraft can bear.

In simple words the greater the bank angle in a coordinated turn the grater the load factor and the greater the lift experiment by an aircraft increasing the risk of an abrupt change in altitude