This paper introduces the large amplitude descent-pitch coupling forced oscillation system recently developed in FL-8 wind tunnel, and the new test technology of measuring longitudinal damping derivative of aircraft model by pure-pitching movement as well as some test data.

The coupling dynamics of the pitching of spacecraft,the sloshing of liquid fuel and the vibration of elastic appendages are investigated in this paper.

In the case of pitch excitation,the modified potential function and wave height function were introduced to describe the moving boundary of fluid.

The results of pitching motion show that the frequency and amplitude of pitching motion are very important factors for the pressure distribution and lift coefficient.

The paper presents the expressions of the pitching movement and velocity equation for shotcrete robot, derived its matrix of Jacobian, and conducted the curve analysis of movement and velocity properties by means of the MathCAD.

Aiming at the pitching movement model,a nonlinear variable structure controller with an optimal sliding surface for the pitching control system of missile was presented.

In this paper, several factors influencing the impleraental control sy-stem are studied and calculated, the tractor pitch motion having an important effect on the control system is also investigated.