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X-ORIGINAL-URL:https://aero.iisc.ac.in
X-WR-CALDESC:Events for Department of Aerospace Engineering
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TZID:Asia/Kolkata
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TZOFFSETFROM:+0530
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DTSTART:20240101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20240910T153000
DTEND;TZID=Asia/Kolkata:20240910T163000
DTSTAMP:20260517T104933
CREATED:20241118T094224Z
LAST-MODIFIED:20241118T094224Z
UID:10000020-1725982200-1725985800@aero.iisc.ac.in
SUMMARY:Solutions for Reducing Severity in Aircraft Flat-Spin Recovery
DESCRIPTION:Aircraft spin is special category of stall and defined as an autorotation in a downward helical pattern with a higher yaw rate than roll and pitch rate. Among the various modes of aircraft spin\, flat-spin being the most ruthless form and characterized by a high angle of attack (𝛼) in the range of 65° to 90°. The flat spin is particularly dangerous since the efficiency of aerodynamic control surfaces is greatly diminished due to nearly perpendicular airflow. In this seminar\, I will talk about\, different flight dynamic and control-based solutions that I developed for recovery (1. Recovery Using Primary Control Surfaces\, 2. Recovery Using Optimally Deflected Deployable Fin\, 3. Strategic Thrust Vector Control Based Recovery\, 4. Vertical Thrust Based Recovery\, 5. Recovery Satisfying Aerodynamic and Load Factor Constraints\, 6. Recovery Using Model Predictive Control\, and 7. Decoupled Incremental Nonlinear Dynamic Inversion Control for Recovery) to reduce the fatality of the flat-spin in terms of excessive altitude loss regulating the survivability post aircraft recovery. Moreover\, an investigation is performed on how the wind and wind share impact the recovery profile. The flat-spin recovery profile is demonstrated on a mathematical model of F-18 high alpha research vehicle (HARV) to test the efficacy of the proposed methods. \nSpeaker: Dr. Salahudden \nBiography: Dr. Salahudden is currently working as an Assistant Professor at the Department of Aerospace Engineering (AE) at Punjab Engineering College\, Chandigarh\, India. Before this\, he was the Deputy Manager in Flight Controls Department at TATA Aerospace and Defence. Prior to that\, he worked as a Postdoctoral Fellow at Auburn University in the AE Department\, United States. He earned a Ph.D. in AE from the Indian Institute of Technology Kanpur (IITK)\, India\, in 2022. He received a M.Tech in AE from IIT Kanpur in 2018 and a B.Tech in AE from SRM University Chennai\, India in 2016. His research interests include the areas of flight mechanics\, aircraft dynamics\, aircraft design\, control law design for flight vehicles\, aircraft simulator design\, and autopilot design. He published numerous reputable journals and conferences based on his research. He is also serving as a reviewer for several reputed journals. He has received many academic and research awards\, such as Outstanding PhD Thesis Award\, Excellent Undergraduate Project Award\, and Outstanding Academic Performance Award.
URL:https://aero.iisc.ac.in/event/solutions-for-reducing-severity-in-aircraft-flat-spin-recovery/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2024/04/AE-Seminar.jpg
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20240917T153000
DTEND;TZID=Asia/Kolkata:20240917T163000
DTSTAMP:20260517T104933
CREATED:20241118T094538Z
LAST-MODIFIED:20241118T094538Z
UID:10000021-1726587000-1726590600@aero.iisc.ac.in
SUMMARY:Advanced Mission Architectures for Long-term Exploration of Mars\, Venus\, and Beyond
DESCRIPTION:The increasing complexity of future space exploration roadmaps calls for novel mission architectures\, integrated mission analysis\, and systems engineering frameworks to inform early decision-making and technological innovation. In this talk\, I will discuss the mission architecture and analysis of two multi-decade campaigns: (1) human missions to Mars\, and (2) astrobiology-driven missions to Venus. First\, I will present the orbital design considerations and results for Mars Spacedock\, an orbital platform for sustainable human exploration. A system-level optimization incorporates discreet mission constraints and comprehensive analysis across all the mission phases from interplanetary trajectories to entry\, descent\, and landing (EDL). Surface accessibility from candidate orbits is obtained by implementing constant bank angle control during EDL. Next\, I will discuss the mission design for a series of missions to Venus searching for signs of life in the clouds. I will highlight the early trade-offs between objectives and operational constraints for a balloon platform and a sample return mission. A focal point will be the Venus ascent vehicle design for sample return through launch trajectory optimization. Additionally\, I will briefly discuss ongoing experiments to establish the feasibility of instruments for in situ analysis of sulfuric acid clouds. Finally\, I will discuss my future research plans in mission design\, systems engineering\, and innovative small-scale spacecraft testing platforms for advanced technologies such as GNC during proximity operations.   \nSpeaker: Dr. Rachana Agarwal \nBiography: Rachana Agrawal is currently a Postdoctoral Associate in the Earth\, Atmospheric and Planetary Sciences department with Prof. Sara Seager at MIT. She is leading mission design and instrumentation projects for astrobiology-focused missions to Venus. She obtained her PhD from the School of Aeronautics and Astronautics at Purdue University under the supervision of Prof. James Longuski and Prof. Sarag Saikia. Her PhD work focused on the design and analysis of an orbital logistics architecture for the sustainable human exploration of Mars. She is broadly interested in robotic and human space mission engineering with current focus on mission analysis\, systems engineering\, and technological innovation and development.
URL:https://aero.iisc.ac.in/event/advanced-mission-architectures-for-long-term-exploration-of-mars-venus-and-beyond/
LOCATION:Online
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2024/04/AE-Seminar.jpg
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