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Space Environment and its Effects on Orbital Spacecrafts

By Prof. Soumyabrata Chakrabarty   |   IIT Kanpur
Learners enrolled: 743   |  Exam registration: 128
ABOUT THE COURSE:

The hazardous interactions between the space environment and the orbiting spacecraft may lead to the degradation of spacecraft and its subsystem performance and may lead to the loss of the spacecraft itself. This course aims to provide the students with the introduction to the understanding of different aspects of the space environment, including vacuum environment, neutral particulate environment, space debris, plasma and radiation environment and how these impact on spacecraft design, human and robotic spaceflight, terrestrial infrastructure systems and will enable students to explore a particular topic at a deeper level. Emphasis is laid on problem solving techniques and design guidelines that will provide the student with an understanding of how space environment effects may be minimized through proactive spacecraft design.

INTENDED AUDIENCE: Postgraduate and PhD students

PREREQUISITES: Knowledge of the elementary theories related to Physics and Mathematics and Chemistry

INDUSTRY SUPPORT: Indian Space Research Organization.
Physical Research Laboratory.
The space startups like Pixxel, Dhruva Space, Piersight etc
Summary
Course Status : Ongoing
Course Type : Elective
Language for course content : English
Duration : 12 weeks
Category :
  • Aerospace Engineering
  • Flight Mechanics
Credit Points : 3
Level : Postgraduate
Start Date : 21 Jul 2025
End Date : 10 Oct 2025
Enrollment Ends : 04 Aug 2025
Exam Registration Ends : 22 Aug 2025
Exam Date : 01 Nov 2025 IST
NCrF Level   : 4.5 — 8.0

Note: This exam date is subject to change based on seat availability. You can check final exam date on your hall ticket.


Page Visits



Course layout

Week 1:  Introduction to Space Environment and Spacecraft Interactions

Lecture 1: Space environment, its types and weather definition, anatomy of Sun, Solar activities as space weather driver
Lecture 2: Solar wind, solar flare, coronal mass ejection, solar energetic particles event.
Lecture 3: Co-rotating Interaction regions, interplanetary magnetic field (IMF).
Lecture 4: Coupling of solar wind to earth’s magnetosphere and ionosphere, geomagnetic storm and substorm, geomagnetic indices.
Lecture 5: Earth’s radiation belt, and ring current, south Atlantic anomaly.

Week 2: Satellite system and its orbit:

Lecture 6: Different types of earth’s orbit for useful satellite applications like LEO, MEO and GEO/GSO, HEO, PEO.
Lecture 7: 
Space environment at different earth’s orbits and the applications of the artificial satellites at different orbital altitudes.
Lecture 8: 
Satellite space segments 1; Mechanical main frames 1; structures, thermal control system.
Lecture 9: Satellite space segments 1; Mechanical main frames 1; structures, thermal control system.
Lecture 10: Electrical main frames 2; Altitude and orbit control system, station keeping, TT and C, payloads

Week 3: Satellite system:

Lecture 11: 
Earth segments 1; Receive-Only Home TV Systems, Transmit-Receive Earth Stations.
Lecture 12: 
Earth segments 2;Important subsystems of a typical satellite earth station and Important considerations for satellite operations.

The vacuum spacecraft environment:

Lecture 13: 
Characteristics of vacuum environment, heat transfer mechanisms in vacuum and its implication of spacecraft thermal design and challenges. 
Lecture 14: 
UV radiation exposure of satellites and its effects, out-gassing effects of spacecraft materials, definition of TML, CVCM, WVR and its’ significance.
Lecture 15: 
Ground Simulation of vacuum environment, thermo-vacuum chamber,  thermo-vacuum test philosophy, Characterization of TML, CVCM and WVR.

Week 4: 

Lecture 16: 
Material selection, design guidelines and mitigation techniques for vacuum environment.

The neutral environment 1

Lecture 17: Neutral gas flow around a spacecraft, earth’s atmosphere, pressure, density and temperature variation with altitude.
Lecture 18: Planetary atmospheres, aerodynamic force; contamination, erosion by atomic oxygen, spacecraft glow.
Lecture 19: 
Particle impacts on spacecraft, scattering of EM radiation from particles.
Lecture 20: 
The physics of macroscopic particles,  cometary, meteoroids,  asteroidal meteors.

Week 5: 

Lecture 21: 
Spacecraft induced neutral Environments,Spacecraft outgassing; chemical thrusters.
Lecture 22: Space debris, its types, space debris management, monitoring, detection and capturing methods.
Lecture 23: 
Simulation, modeling and mitigation techniques for effects neutral environment.

Plasma Environment 1:

Lecture 24: 
Basic charged Particle Motion in Constant Electric and Magnetic Fields, gyro-radius, cyclotron frequency.
Lecture 25: 
ExB drift, Debye shielding, plasma frequency, magnetic mirroring.

Week 6: Plasma Environment 2:

Lecture 26: 
Geomagnetic storm/substorm and the external and disturbance fields
Lecture 27: 
Plasma environment in low earth orbit and  polar orbits and interaction with spacecrafts
Lecture 28: 
The geosynchronous orbit plasma environment; spacecraft-plasma interactions.
Lecture 29: 
The physics of spacecraft charging, spacecraft potential.
Lecture 30: Spacecraft surface charging, absolute charging, differential charging

Week 7: Plasma Environment 3

Lecture 31: 
General probe theory: the thin-sheath limit, the thick-sheath limit, spacecraft potentials, Langmuir probe.
Lecture 32: 
Spacecraft as a Langmuir Probe, Current Collection in spherical, cylindrical and plane geometry
Lecture 33: 
Energy distribution of plasma species, Single Maxwellian and double Maxwellian distribution, Spacecraft charging in a Maxwellian plasma
Lecture 34: 
Current from the ambient plasma, photoelectric currents, backscattered and secondary electrons.
Lecture 35: 
Current balance equation, computation of spacecraft built-up potential.

Week 8: Plasma Environment 3

Lecture 36: 
Effect of magnetic fields on current collection, artificial current and charge sources.
Lecture 37: Space Tethers, Plasma Contactors, and Sheath Ionization.
Lecture 38: Electrostatic Discharges on Spacecraft: Location of discharges on spacecraft, differential charging, electromagnetic Interference.
Lecture 39: 
Bulk or internal spacecraft charging: high-energy electron and ion fluxes, penetration of high-energy charges into materials, properties of dielectrics, avalanche ionization in a high electric field.
Lecture 40: 
Satellite anomalies due to spacecraft charging, modelling, simulation and testing.

Week 9: Plasma Environment 4

Lecture 41: 
Design guide lines and mitigation techniques against spacecraft charging

Radiation environment 1

Lecture 42: Electromagnetic radiation, electromagnetic radiation at radio frequencies, visible and infrared, UV, EUV, and X-rays; 
Lecture 43: 
Energetic particle radiation; trapped radiation, cosmic rays,  Solar proton events.
Lecture 44: 
Radiation belts, radiation belt electron population, nominal electron belt structure and dynamics,  solar wind drivers of radiation belt dynamics
Lecture 45: 
Radiation interactions with matter, single-particle interactions, photon interactions, charged-particle interactions, neutron interactions.

Week 10: Radiation environment 2 

Lecture 46:
 Space radiation risks to astronauts, case studies of ISS 
Lecture 47: Effects on spacecrafts, Single event effects, total ionization dose, displacement damage.
Lecture 48: 
Radiation charging of dielectric materials, physics of radiation-Induced charging, radiation-induced bulk discharges 
Lecture 49: Modeling, Simulation, and Testing


Week 11: Radiation environment 3 

Lecture 50: Coupling, victim, spacecraft radiation hardening
Lecture 51: 
Test and evaluation, design guidelines, material selection, wiring and cable shields and their bonding
Lecture 52: Spacecraft radiation hardening, Radiation Hardness Assurance
Lecture 53: Design guidelines and mitigation techniques for the effects of radiation environment.

Risk assessment, reliability 1

Lecture 54: 
Failures Caused by the Space Environment, a review of different space missions anomalies
Lecture 55: Risk assessment and management, general guidelines for risk assessment

Week 12: Risk assessment, reliability 2

Lecture 56: 
Reliability and Quality Assurance, Parts reliability
Lecture 57: Satellite system availability

Mission planning, Spacecraft operations and safety 

Lecture 58: Space mission drivers, different considerations of mission planning
Lecture 59: 
Spacecraft operations: fault management systems
Lecture 60: 
Autonomy in spacecraft operations, different approaches

Books and references

Text Books:

1. Hastings, D., & Garrett, H. ‘Spacecraft-Environment Interactions’, (Cambridge Atmospheric and Space Science Series). Cambridge: Cambridge University Press, 1996.
2. Vincent L. Pisacane, ‘The Space Environment and Its Effects on Space Systems’, Second Edition, American Institute of Aeronautics and Astronautics, Inc, 2008.
3. Alan C. Tribble, ’The Space Environment: Implications for Spacecraft Design’, Princeton University Press, Princeton New Jersey, 2003.
4. Thomas F Tascione, ‘Introduction to the Space Environment’, 2nd Edition, Krieger Publishing, Florida, 1994.
5. Shu T. Lai, ‘Fundamentals of Spacecraft Charging: Spacecraft Interactions with Space Plasmas’ Princeton University Press, 2012.

Reference Books:

1. Volker Bothmer, Ioannis A. Daglis, ‘Space Weather: Physics and Effects’, Springer Berlin, Heidelberg, 2007
2. Yohsuke Kamide Abraham C.-L. Chian, ‘Handbook of the Solar-Terrestrial Environment’, Springer Berlin Heidelberg New York, 2007
3. George V. Khazanov, ‘Space Weather Fundamentals’, CRC Press Taylor & Francis Group, 2006.

Instructor bio

Prof. Soumyabrata Chakrabarty

IIT Kanpur
Prof. Soumyabrata Chakrabarty obtained his B. E. (Hons) degree from NIT (Previously REC) Silchar in 1988, M. E. from Jadavpur University in the year 1992 both in Electronics and Telecommunication Engineering and Ph. D. degree in Engineering from Indian Institute of Technology, Kharagpur in the year 1996. He served NIT, Silchar as lecturer in the Department of Electronics and Telecommunication Engineering during 1995-1996. He is currently working as Professor of Practice Department of Space, Planetary & Astronomical Sciences & Engineering (SPASE) Indian Institute of Technology, Kanpur. He served the Department of Electrical Engineering, IIT Gandhinagar as visiting professor during July 21-June 2024.

He served the Antenna Systems Group, Space Applications Centre, Ahmedabad as scientist/Engineer during September 1996 - June, 2021 and was involved in the development of a variety of state-of-the-art antenna systems related to Microwave Remote sensing payloads. He served the German Aerospace Centre (DLR) during 1999-2000 as guest scientist deputed from ISRO. His area of research is Space Weather interaction of Spacecrafts, Computational Electromagnetics, Design and development of Antennas for Radio Telescopes and Microwave Sensors. He has authored and co-authored more than 80 papers published in IEEE transactions on EMC, MTT and IET Journals, International journal of Electronics etc. He has also presented a number of papers in international conferences in addition to several technical reports at the Space Applications Centre/ ISRO.

He received INSA visiting fellowship 1996 and was short-listed for INSA young Scientist award 1997. He received ISRO team excellence award for the successful development of Scatterometer and RISAT payload.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: November 01, 2025 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

Please note that assignments encompass all types (including quizzes, programming tasks, and essay submissions) available in the specific week.

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Kanpur .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team
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