Learn · Space Environment and its Effects on Orbital Spacecrafts
Lecture 13 of 62Week 3
Lec. 12: Characteristics of Vacuum Environment, The Effects on Spacecraft, Extreme Temperatures, Exposure to Radiation and Outgassing
Prof. Soumyabrata Chakrabarty · IIT Kanpur
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- Space Environment and its Effects on Orbital Spacecrafts, IIT Kanpur (at NPTEL)
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- CC BY-NC-SA, as NPTEL states it. Non-commercial use only.
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- NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
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All the lectures
- Lec1: Space environment and its Types, Space Weather Definition, Anatomy of Sun, Solar Activities as Space Weather Driver
- Lec.2: Solar Activities, Solar Wind, Solar Flare, Coronal Mass Ejection and Solar Energetic Particles Event
- Lec.3A: Interplanetary Magnetic Field (IMF), Co-rotating Interaction Regimes Corona, Coronal Structures, Coronal Loops, Helmet Streamers and Coronal Holes
- Lec.3B: Interplanetary Magnetic Field (IMF), Co-rotating Interaction Regions
- Lec. 4: Coupling of Solar Wind to Earth's Magnetosphere and Ionosphere, Geomagnetic Storm, Geomagnetic Substorm and Geomagnetic Indices
- Lec.5: Earth's Radiation Belt, Ring Current and South Atlantic Anomaly
- Lec. 6: Satellite Orbits, Geometry, Velocity and Period, Orbital Parameters and Orbital Perturbations
- Lec. 7: Different Types of Earth's Orbit for Useful Satellite Applications
- Lec. 8: Satellite Segments, Space segments, Mechanical Main Frames, Structures and Thermal Control System
- Lec. 9: Satellite Segments, Space segments, Mechanical Main Frames, Mechanisms, Propulsion System, Electrical Main Frame and Power System
- Lec. 10: Satellite Segments, Space segments, Electrical Main Frame, TT and C, Attitude and Orbit Control System and Payloads
- Lec. 11: Satellite Segments, Earth Segments, Receive-Only Earth Station, Transmit-Receive Earth Stations
- Lec. 12: Characteristics of Vacuum Environment, The Effects on Spacecraft, Extreme Temperatures, Exposure to Radiation and Outgassing
- Lec. 13: Vacuum Environment, Outgassing, Outgassing Mechanism and Transport of Outgassed Material
- Lec. 14: Outgassing of Spacecraft Materials, TML, CVCM, WVR and Its Significance, Ground Simulation of Vacuum Environment, Thermo-Vacuum Chamber, Thermo-Vacuum Test Philosophy and Characterization of TML, CVCM and WVR
- Lec. 15: Vacuum Environment, The Effect of Exposure of UV Radiation on Spacecraft Material, Design Guidelines and Mitigation Techniques
- Lec. 16: Neutral Gas Flow Around a Spacecraft, Effects on Spacecraft, Atomic Oxygen Attack, Sputtering, Contamination and Spacecraft Glow
- Lec. 17: Neutral Space Environment, Atmospheric Drag, Drag Force and Satellite Orbital Parameters
- Lec. 18: Neutral Space Environment, The Micrometeoroid/ Orbital Debris Particulate Environment and Hyper Velocity Particle Impact on Spacecraft
- Lec. 19: Spacecraft Induced Neutral Environment, Scattering of Electromagnetic (EM) Radiation from Particles and Orbital debris
- Lec. 20: Orbital Debris, Dealing with Space Debris- Management, International Cooperation, Monitoring, Detection and Tracking, Radar Techniques and Optical Techniques
- Lec. 21: Capturing of Orbital debris, Contact capturing method, Contactless capturing method and Removal of Orbital debris
- Lec. 22: Removal of Orbital debris, Space Environment based and Non-space Environment
- Lec. 23: Removal of Orbital debris, Non-space Environment based methods and Mitigation strategies
- Lec. 24: What is plasma and its nature, Behavior of plasma in external Electromagnetic field, Uniform magnetic field, Gyro-radius and Cyclotron frequency
- Lec. 25: Charge particle movement in a uniform magnetic field, Helical particle trajectory, Guiding center, Pitch and pitch angle, Dimagnetic properties of plasma, Magnetic moment, E x B drift and Drift velocity
- Lec. 26: Introduction to Plasma, Magnetic moment, E x B drift, Plasma Oscillations and plasma frequency and Debye Shielding
- Lec. 27: Debye Shielding, External charge introduced in plasma, Debye length and Debye volume
- Lec. 28: Collective Behavior of plasma and Velocity, Energy, Temperature of plasma
- Lec. 29: Non-uniform magnetic field, Magnetic mirroring and Trapping of charged particles
- Lec. 30: Plasma environment in earth's orbit, Origin of space plasma in earth’s orbit, Effects on spacecraft and Plasma environment at different earth’s orbits
- Lec. 31 Spacecraft charging, Capacitor charging, Probe theory, Langmuir probe, Physics of Spacecraft charging and Spacecraft as a Langmuir probe
- Lec. 32: Spacecraft charging: probe theory, Langmuir probe, Langmuir probe equation for a sphere in the orbit-limited regime, Current Collection in Cylindrical Geometry and Current Collection in Plane Geometry
- Lec. 33: Spacecraft charging, Spacecraft Equilibrium Potential, Repelling of Like Charges, Attraction of Opposite Charges, Boltzmann’s Repulsion Factor and Spacecraft Potential in Plasma
- Lec. 34: Spacecraft charging, Current balance equation, Current collection in spacecrafts and Different current components
- Lec. 35: Spacecraft charging, Different Plasma Fluxes Affecting Spacecraft, Charging and Current balance equation and spacecraft potential
- Lec. 36: Spacecraft charging, Lumped Circuit model of spacecraft, Different types of spacecraft charging and Effects of spacecraft charging
- Lec. 37: Spacecraft charging, Analysis, design, testing, inspection and Mitigation strategies
- Lec. 38: Numerical problems related to plasma physics
- Lec. 39: What is radiation, What is space radiation environment and It’s classifications and origin
- Lec. 40: Ionizing and non-ionizing Radiation, Ionizing radiation, Linear Energy Transfer, Total Ionizing dose, Stopping cross section and Stopping range
- Lec. 41: Radiation Energy: Classical Vs Relativistic, Bremsstrahlung Radiation, X- Rays, Gamma Rays, Photoelectric Effect, Compton Effect and Pair Production
- Lec. 42: Displacement damage and Total Radiation Dose
- Lec. 43: Single Event Effects, Single Event Upset (SEU), Single Event Latch-Up (SEL), Single Event Burnout (SEB) and Single Event Gate Rupture (SEGR)
- Lec. 44: Effects of Space Radiations on Spacecrafts and Space Radiation Risks to Astronauts, Case Studies of ISS
- Lec. 45: Modelling, Simulation and Testing and Mitigation towards Space Radiation Risks
- Lec. 46: Ground Simulation of space environment and launch conditions, Test and Evaluation for Space qualification, Introduction of reliability and Reliability and Failure function
- Lec. 47: Reliability and Failure function, Failure probability density function and Failure or hazard rate
- Lec. 48: Significance of hazard or failure rate, Reliability in terms of failure or hazard rate and Failure rate and bathtub curve
- Lec. 49: Failure rate and bathtub curve, Gaussian and Weibull probability density function, Meantime to failure and Mean satellite lifetime
- Lec. 50: Mean satellite lifetime, Satellite System Availability, Without backup and With backup
- Lec. 51: Satellite System Availability, Without backup, With backup and System reliability
- Lec. 52: System reliability, Subsystems in series and Redundant Subsystems
- Lec. 53: System reliability, Redundant Subsystems (static redundancy), MTTF, Failure rate, n- sub-systems in parallel and Reliability if k out of n elements are necessary
- Lec. 54: System reliability, Reliability if k out of n elements are necessary and Dynamic Redundant Subsystems (with switching)
- Lec. 55: System reliability, Dynamic redundancy (with switching), Generalized expression for system reliability with Dynamic redundancy using switching and Redundancy with different failure rates
- Lec 56 : Equipment redundancy taking account of the reliability of the switching element and Example: Redundancy of TWTs in the channelized part of a payload
- Lec 57: Equipment having several failure modes, Component Reliability and Quality assurance
- Lec 58(A) : Component selection and Quality assurance
- Lec 58(B) : Component selection and Quality assurance
- Lec 59 : What is a space mission and its types and Mission Objectives and Planning
- Lec 60 : Mission Planning, Satellite operation and Autonomous Satellite system