Determination of necessary commands for the motion of a rocket on a given linear trajectory in the atmosphere
Abstract
The variation in time of the attack angle of the control surfaces of a rocket so that it is moving on a given linear trajectory in the atmosphere is determined in this paper. Variation of aerodynamic coefficients with the Mach number is considered as well as the variation in time (in the fuel combustion stage) of the moments of inertia and the position of the center of mass of the rocket. Air density and sound velocity are assumed variable with the altitude. A numerical calculation example solved with the algorithm presented in this paper is shown in the end.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 August 1985
 Bibcode:
 1985STIN...8616244C
 Keywords:

 Aerodynamic Coefficients;
 Angle Of Attack;
 Control Surfaces;
 Rocket Vehicles;
 Trajectories;
 Trajectory Control;
 Acoustic Velocity;
 Air;
 Algorithms;
 Computation;
 Linear Equations;
 Mach Number;
 Microcomputers;
 Moments Of Inertia;
 Parallel Processing (Computers);
 Time;
 Launch Vehicles and Space Vehicles