Shashidhar Walthati Ph no: +91-944*******

Male, DOB: 26-06-1997 adoiq5@r.postjobfree.com

SCHOLASTIC RECORD

Degree Institute Year CPI/%

M. Tech (Aerospace Propulsion) Indian Institute of Technology Bombay (IIT Bombay) 2021 9.4 B. Tech (Aerospace Engineering) Indian Institute of Space Science and Technology (IIST) 2018 5.98 12

th (Andhra Pradesh Board) Narayana Junior College 2014 97.1% 10

th (Andhra Pradesh Board) Sri Laxmi High School 2012 9.8 RESEARCH PROJECTS

• Numerical Simulation of Hall Thrusters Jul ’20 - Jul ’21 Guide: Prof. K. Bodi, Dept. of Aerospace Engineering, IIT Bombay

Developed and validated 3D kinetic codes in C++ and Python for plasma simulation in Hall thruster.

Used Particle in Cell (PIC) method to: calculate charge density, compute potential and electric field by solving Poisson’s equation and interpolation of fields to particle. Visualised the results in Paraview and Python

• Modelling and Visualisation of Annular Flow in Vertical Tubes Jan ’18 - May ’18 Guides: Prof. Aravind Vaidyanathan, Assoc. Prof. Pradeep Kumar P, Dept. of Aerospace Engineering, IIST

Fabricated a 10 feet long experimental rig to generate annular flow in a 1 m long tube with air concentrically inside water stream to capture film features using Planar laser induced visualisation (PLIF) technique.

Experimented with Reynolds no. 7500 - 35000 of water and 750 - 8500 of air and found the film thickness to be 0.2 mm – 0.65 mm in downward and 0.5 mm – 1 mm in upward configurations from image processing.

Modelled and formulated existing theoretical models in MATLAB and improved them to validate the exper- imental results. Error between theoretical and experimental results is found to be less than 10%

• Electric Propulsion: Hall Thrusters Jan ’20 - May ’20 Guide: Prof. K. Bodi, Dept. of Aerospace Engineering, IIT Bombay

Rigorous literature review of 15+ journals on Electric thrusters and their merits over chemical thrusters

Identified the current electric propulsion systems, it’s types and the missions where they are used

Reviewed the problems in Hall thrusters and it’s solutions, both experimentally and computationally COURSE PROJECTS

• CFD Using Finite Difference Method (FDM) Jan ’20 - Mar ’20 Instructor: Prof. J.C. Mandal, Computational Fluid Dynamics, IIT Bombay

Formulated FDM to find the solution of linear advection equation in C for CFL numbers: 0.5, 1 and 1.5

Developed codes for schemes; Jacobi, Gauss Siedel and SOR in C to find steady state temperature distribu- tion on a 2D rectangular plate by solving Laplace equation and validated them using analytical solution.

Modelled the solution of Euler equation in C using Steger and Warming Flux Vector Splitting scheme.

• Design of a Transonic Axial Fan Aug ’19 - Nov ’19 Instructor: Prof. A. M. Pradeep, Aerodynamics of Compressors & Turbines, IIT Bombay

Designed a transonic stage axial fan with hub-to-tip ratio of 0.3 and rotor rotational speed of 8000 rpm

Performed calculations to obtain velocity triangles at mean, hub and tip in M. S. Excel

Numerically simulated the fan stage with 39-rotor & 78-stator blades by solving RANS eqn. in Multall

Modelled and optimised CAD models of transonic fan stage geometry using 3D surface loft in CATIA.

Obtained hub and tip parameters from Meangen and blade profiles using free vortex design-STAGEN.

• Rocket Performance Characteristics Jan ’20 - Feb ’20 Instructor: Prof. Sudarshan Kumar, Aerospace Propulsion, IIT Bombay

Calculated chemical equilibrium product concentration of solid & liquid propellant reactants using NASA CEA software and analysed the impact of metal additives like Boron and Aluminium.

Examined how the change in fuel-oxidizer compositions affected the performance of rocket

• Sample Return Mission from Comet 81P/Wild Jul ’17 - Nov ’17 Instructor: Dr. Ramanan R.V, Aerospace Vehicle Design, IIST

Designed a mechanism onboard the spacecraft in MSc Adams to collect the sample from the comet

Developed optimum trajectory path to comet in MATLAB and explored various propellant systems

Structural analysis of first and second stage propellant tanks were done in Ansys fluent

Modelled the shape of reentry capsule and it’s heat shield and coating based on its thermal analysis WORK EXPERIENCE & INTERNSHIP

• Freelancer Upwork Inc. Mar ’19 - Jul ’19

Landed high-profile jobs from university students related to advanced engg. mathematics and LATEX.

Got recommended to the client’s colleagues frequently Received a rating of 5/5 from several clients and got a feedback that I’m "courteous, resourceful and skilled" and called my work as "Excellent".

• Subject Matter Expert Work From Home Internship, Edufeat Private Limited, Kharagpur Feb ’19 - May ’19

Solved the questions from various branches in engineering, most notably mechanical and math.

Assisted students in assignments related to fluid mechanics, thermodynamics and vibrations.

• Annular Liquid Film Visualisation Internship, Prof. Aravind, Assoc. Prof. Pradeep, IIST Jun ’17 - Jul ’17

Experimentally visualised annular flow in a tube with different mass flow rates of air and water using Planar Laser Induced Fluorescence (PLIF) technique to study film heat transfer characteristics.

Captured film profile and it’s interaction with streams and tube walls. Average film thickness found to be increasing with increase in superficial air and water velocities due to entrapment of air in the water film.

Observed smooth flow near the tube walls and wave like structure near the air-water interface region. POSTER PRESENTATION

• Presented poster entitled “Planar Laser-Induced Fluorescence (PLIF) Visualization of Two Phase Annular flow” in ASET 2018: National conference on future directions in propulsion at LPSC, ISRO. May ’18 POSITIONS OF RESPONSIBILITY

• Sports Secretary Hostel 15, IIT Bombay Nov ’19 - Jun ’20

Worked with a team of 8 to manage sports environment of 800+ students Renovated the hostel 15 gym

Implemented QR based system to reduce communication gap between students and sports council.

Procured gym and sports equipment items worth Rs. 1,50,000+ for hostel sports.

Managed 600+ people for inter hostel sports fest RAFTAAR of hostels 15 and 16.

• Teaching Assistant Aircraft Propulsion course and Propulsion Lab, IIT Bombay Jan ’20 - May ’21

Supervised and instructed a batch of 61 students in groups of 6/week for Nozzle Thrust experiment

Assisted instructor during class and conducted tutorial sessions for 28+ students. TECHNICAL SKILLS

• Languages : C/C++, Python, Matlab • O.S : Windows, Linux Ubuntu 18.04.3 LTS

• Softwares: Ansys, Catia, MS Office, Paraview, Msc Adams, Multall, Openfoam, Latex KEY COURSES

• Computational Fluid Dynamics • Aircraft Propulsion • Aerospace Propulsion

• Aerospace Vehicle Design • Aerospace Structures • Aircraft Design

• Aerodynamics of Compressors and Turbines • Space Flight Dynamics • Fundamentals of Combustion EXTRACURRICULARS

• Worked in a team of 8 to design & fabricate gliders for max. Range & Endurance in ITF course Aug - Nov ’19

• Built Catch game using Scratch software by attending game development workshop at IIT Bombay Sep ’19

• Developed and tested a mini size Goalie mechanism using a servo motor and an ultrasonic sensor. Oct ’17

• Designed and flew the Tricopter in a workshop organized by Aerotrix, Skyfi Labs at IIST, Trivandrum Mar ’15

• Felicitated with emerging player trophy among 138 participants at IIT Bombay Institute chess league Feb ’20

• Captain of Aerospace volleyball team in IIT Bombay Post graduate general championship (PGGC) Feb ’20

• Secured first place in chess tournament conducted as a part of inter house matches at IIST, Trivandrum Apr ’17

• Involved in dance practice with a team of 44 for IIT Bombay (Post graduate cultural) PG Cult phase 2 Feb ’20

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