14.1 Non-Linear Forces and Moments
Problem 1 – If the projectile in problem 9 happens to be flying at a limit-cycle yaw of 4 degrees
with a spin rate of 130 Hz and velocity 1,764 ft/s. What would the non-linear pitching moment
have to be for the projectile to be marginally stable?
Hints: 1.) Assume all of the other coefficients are linear.
2.) Recall the definition of the non-linear pitching moment (you have the linear part in
problem 1 of Chapter 9
So
539.0
M
The total pitching moment coefficient is then found from
m
2