On selecting limit conditions for parameter spread in launch vehicle dynamic design

The paper presents proposals for selection of parameter spread limit conditions in dynamic designs of launch vehicles for motion control systems. They take into account errors in determining mass-inertial properties, engine thrust, aerodynamic properties, fluid dynamics parameters in propellant tanks, as well as elastic behavior of the launch vehicle hull and suspension of control main engines. Two limit conditions for parameter spread are defined by indicating the direction of change for every parameter used in dynamic design