Satellite Liquid Propulsion Systems Training
Satellite Liquid Propulsion Systems Training Course Description
Liquid Rocket Propulsion Systems have been used on near-earth orbiting satellites and deep space interplanetary missions for the last five decades. This four-day Satellite Liquid Propulsion Systems Training provides a comprehensive treatment of all types of spacecraft pressure-fed liquid propulsion systems including (1): Monopropellant hydrazine and hydrogen peroxide systems, (2): Bipropellant MMH/NTO systems, and (3): Dual Mode Hydrazine/NTO systems. This hands-on, application-oriented course covers the fundamentals and applications of liquid rocket propulsion to satellite design and operation for both spinning and three-axis configurations. The course includes propulsion Trade studies, Design and analyses, Component sizing and selection, Propulsion manufacturing, integration, and cleaning, System testing, Propellant loading and pressurization, Vertical and horizontal launch processing, Launch, Mission operations, On-station operations and Final de-orbiting of the satellite.
• Fundamentals of Rocket Propulsion and Rocket Engines
• Liquid behavior in zero gravity
• Flow of liquids and gases
• Selecting the most appropriate propulsion system and components for specific application
• Design & Analysis of propulsion systems and components.
• Propulsion system Integration, Cleaning, and Testing.
• Propulsion System Launch Site operations
• Propulsion system Flight Operations and Trouble shooting
• Propulsion system In-orbit operations, Predicting propellant life, Anomaly resolution, Satellite de-orbiting
With onsite Training, courses can be scheduled on a date that is convenient for you, and because they can be scheduled at your location, you don’t incur travel costs and students won’t be away from home. Onsite classes can also be tailored to meet your needs. You might shorten a 5-day class into a 3-day class, or combine portions of several related courses into a single course, or have the instructor vary the emphasis of topics depending on your staff’s and site’s requirements.
Introduction: Course Overview, Definitions, Thrust principle, Evolution of propulsion system
Satellite Propulsion Subsystems Overview: Pressurized blow-down systems, Pressure regulated systems, Monopropellant, Bipropellant, and Dual mode systems
Liquid Rocket Engines: Thrust, Impulse, Specific impulse, Impulse-bit, Thrust coefficient, Catalytic decomposition, Combustion stoichiometry Mixture ratio, Adiabatic flame temperature, Monopropellant / Bipropellant / Dual mode thrusters, Radiatively-, regeneratively-, and film-cooled combustion chambers, Thrust chamber materials, Station keeping thrusters, Liquid apogee motors (LAMs), Thruster valve and Injector design, Hot-fire testing, Thruster transient thermal models
Propellant and Pressurant Tanks: Titanium and composite material tanks, Spherical, coni-spherical, cylindrical and elliptical tanks, Common ox/fuel tank, Two-port and three-port tanks, Bladder, Diaphragm and PMD tanks, Tank mountings, Spun and forged titanium tank sizing and weight tradeoffs, Launch vehicle interface considerations, Tank testing
Propulsion Valves, and Filters: Latch valve and squib valve design and function, valve pressure drop (orifice equations for liquids and subsonic/sonic gas flow), Design of valve backpressure relief feature, Laminar flow through filters, Establishing components / system leakage requirements, Gas versus liquid leakage, Zero-leakage criteria, Filter dirt handling capacity, Sizing of pneumatic pressure regulators, Pressure transducers, and Temperature sensors types and accuracy
Monopropellant System Design and Performance Analysis: The Gas Law, Propellant fill fraction, Propellant Tank blowdown pressure profile, Helium budget; Blowdown system performance model, Recharge systems, Performance tradeoff examples, adiabatic compressibility.
Bipropellant/ Dual Mode System Design & Performance Analysis: Propellant and helium tank pressure profile, Heat transfer in helium tanks, Joule-Thompson effect in pressure regulators, Propellant tank regulation and lockup pressures, Feed system laminar and turbulent pressure drop, Component pressure drop matching for equal withdrawal from connected fuel (or oxidizer) tanks, Flow coefficients, Thruster flow networks, Water hammer transients, System flow and performance modeling, The Rocket Equation and Propellant budgets
Zero-Gravity Fluid Handling: Problems of Gas-free liquid acquisition in zero-gravity, Bubble traps in spinning satellites, Liquid/gas-vapor interface in zero gravity, Zero gravity hydrostatics and hydrodynamics, Capillary phenomena and surface tension forces, capillary strength against induced hydrostatic pressure and flow losses
Propulsion Manufacturing, Testing, and Launch Site Operations: Post-manufacturing cleaning of subsystem, Establishing propulsion system/component flushing flow and number of flushing cycles, Propulsion system vacuum drying, System testing, Explosive potential of pressurized vessels ( TNT), Launch site safety requirements, Vertical / Horizontal ground processing, Helium gas solubility in liquid propellants, Propellant tank loading and pressurization, Helium tank pressurization
Flight Operations: Orbit-raising maneuvers, On-orbit maneuvers Propellant life prediction techniques, Optimizing propellant life, End-of-life de-orbit strategies, Trouble shooting, Anomaly resolution
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