DESIGN OF SPACE VEHICLES

Credits: 9

Learning objectives
Overview on the spacecraft payloads and missions, Space Vehicle Environment and Its Effect on Design, Environmental Effects on Design; Operational environment of the Spacecraft; Sources and sink space temperatures; Gravitational field; Magnetic field; Mission Analysis; LEO and GEO Missions; Satellite Constellations. Space Vehicle Architecture. Spacecraft dynamics; Simple spinner; Dual spinner, Landon’s rule; Tether systems. Attitude and Orbit Control Subsystem: Passive control technique, Active control technique, Sensors and Actuators. Propulsion systems; Electric propulsion. Electrical Power Subsystem; Radio-isotope thermal generator (static, dynamic); Batteries; Power budget. Thermal Control Subsystem: Passive and active thermal control, coatings, optical solar reflectors, thermal blankets (MLI), heaters, louvers, heat pipes. Structure and Mechanisms: Design requirements; Material selection; Loads; Methods of analysis; Monocoque; Skin-stringer; One-shot device; Mass budget; Testing and Verifications. Telecommunication Subsystem: Techniques of space communications; Communication payloads; Antennas; Polarization; Frequency stability; Link budget. Telemetry, Command and Data Handling: System architecture; Telemetry data formatting; Telecommand; On-board Data Handling. Ground Stations: Ground Station architecture; Range and range rate measurements; Angle Pointing Elements; Two Line Elements; Tracking systems;  Mission operations.