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Lighter than Air Systems

NPTEL and Indian Institute of Technology Bombay via Swayam


This course is designed to provide students an overview of Lighter-than-Air (LTA) systems, a subject of Aerospace Engineering that was once at the forefront of technological developments, but which got pushed into oblivion in late 1930s. The subject was revived in mid 1980s due to renewed interest in such systems for long endurance applications with low fuel consumption. The course will be conducted using the in-class recordings of 20 lectures of this course (by CDEEP) that were delivered by the instructor at IIT Bombay in Autumn Semester of 2015. There will be a monthly interaction video session with students, in which their doubts will be cleared. The students can also approach the instructor via e-mail, or on phone at some pre-specified time window.

INTENDED AUDIENCE :Aeronautical Engineering, Aerospace Engineering, Mechanical EngineeringPREREQUISITES : NoneINDUSTRIES SUPPORT :ISRO, NAL, ADRDE, Airbus, Boeing, Lockheed Martin



Week 1: Background and Introduction to LTA systemsWeek 2: Historical Perspectives of LTA SystemsWeek 3: Airships developed at IITB
Week 4: Static Lift Concepts
Week 5: Static Lift Estimation
Week 6: Variation of Net Static Lift
Week 7: Pressure Height Calculations
Week 8: Envelope Materials and Ground Handling of LTA Systems
Week 9: Airship Design Methodology
Week 10:Airship Propulsion Systems and Case studies in Airship Operation
Week 11:Aerostat Design Methodology
Week 12:High Altitude Airships andHybrid LTA systems

Nouman Uddin

Nouman Uddincompleted B.Tech in Aeronautical Engineering from Dr. A.P.J. Abdul Kalam Technical University, Lucknow in 2020, and was consistently in the top student of his class during the four years of his B.Tech. He did a one month summer training at ADRDE, DRDO in Agra, followed by a two-month project work at IIT Bombay. Later, he was selected as a Research Intern under "IRCC Research Internship Award 2019-20" at IIT Bombay, where he worked on Design of a Test Rig for a Phase Change based Lighter-than-Air System. He has cleared nine NPTEL exams under the domain of Aerospace Engineering. He also has been the TeachingAssistant for the course on Introduction to Aircraft Design in the past semester. He is a coordinator for the Fourth National Aerospace ConceptualDesign Competition (akaNACDeC-IV). Recently, he presented two research papers at International Conferences, one of which received the best paper award.

Taught by

Prof. Rajkumar S. Pant

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