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Intro

Sudipto Mazumder

I’m Sudipto Mazumder, a Cum Laude mechanical engineering graduate from Stony Brook University with a strong focus on precision design and thermal systems. As a Thermal Engineer in NASA's L'SPACE Mission Concept Academy, I designed a spacecraft’s thermal subsystem, combining creativity with technical expertise. My coursework in heat transfer and machine design has given me a robust foundation for tackling complex engineering challenges—bridging theory and real-world application to drive innovative solutions.

I am passionate about all facets of mechanical engineering, extending beyond thermal system design. My manufacturing internship at Stony Brook University gave me hands-on experience producing and drafting precision parts for faculty and senior design teams. Through various hands-on projects, I have also developed familiarity with robotics and automation, working with robotic systems and automated solutions. This multidisciplinary background has equipped me with a versatile skill set that spans mechanical design, thermal analysis, control systems, and robotics. This multidisciplinary approach allows me to tackle complex challenges and across multiple domains of engineering.

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Bio

I am a motivated mechanical engineering student with a strong enthusiasm for learning new skills and technologies. I thrive in team environments and am always eager to adapt to new challenges, supporting my peers and contributing to collaborative projects. My curiosity and willingness to embrace new ideas drive me to continuously grow and add value wherever I work.

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Skills

CAD Software:
Autodesk Inventor
4 Years
Fusion 360
3 Years
SolidWorks
1 Year
NX Siemens
1 Year
Autodesk Inventor FEA
1 Year
Manufacturing:
Machining (Milling, Lathing, CNC)
2 Years
3D Printing
2 Years
Programming Languages:
C++/Arduino
4 Years
MATLAB
3 Years
LabVIEW
2 Years
Python
1 Year
G-code
1 Year
Microsoft Office Suite
5+ Years
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My Projects (Page 1 of 6)

Throughout my four years at Stony Brook University, I have endeavored in various projects in order to hone my skills. These projects vary from personal projects to class projects. Here are some of them:

Autonomous Valve Tester

Autonomous Valve Tester - Main View

Senior design project in collaboration with Belimo Aircontrols, automating the critical angle test for ball valves.

Youtube link: https://www.youtube.com/watch?v=9ApS5geGOWE&t=136s

Mechanical Design and Construction

This valve tester fixture was mechanically designed to minimize human interaction in order to conduct the critical angle test autonomously. The critical angle test measures the angle at which the valve stem of a ball valve has to rotate before 0.5 mL/min of water flow rate is detected through the valve. Since Belimo already had their own testing frame rack, the design had to be as lightweight and corrosion resistant as possible, as the components would be interacting with water while simultaneously fitting within a constrained space, as shown in the setup above.

The components of the subassembly were selected in order to automate the tedious process of measuring angles of the valves. The actuator chosen was of the model GRCX24-MFT and was provided to us by Belimo. Using this actuator makes our design modular as it allows for future testing for Characterized Control Valves (CCV) of up to 2 1/2 inches in diameter, although our current test is for 1/2 inch CCV's. We also have a A50H-2048-HZCP9-RL2 fully hollow incremental encoder in order to measure our leakage angle. Finally, we have a Bronkhorst L23 flowmeter in order to detect the 0.5 mL/min flow rate through the valve.

Overall Subassembly CAD Model Valve Subassembly Real Photo
FEA (Finite Element Analysis)

FEA was performed on the subassembly to ensure the framing of the subassembly would be structurally sufficient as it would be held horizontally. FEA was performed on instrumental parts such as the top and bottom frame plates, as well as the encoder frame plates to ensure that the system would be compact. The images shown are displacement results showining minimal displacement as a result of the loads exerted on them, meaning our subassembly is structurlly sound.

FEA Result 1 - Displacement FEA Result 2 - Displacement FEA Result 3 - Displacement

Electrical and Software Integration

The way I devloped our control systems was to first calibrate everything, and then start the water flow. The actuator, which is mechanically connected to the valve stem of the ball valve, starts off fully shut off, and then it'd rotate incrementally by 0.5 degrees. As the actuator rotates by the said amount, the encoder is recording the measurements to verify the angle of the protractor and the actuator (as a means of redundancy). This process continues until the flowmeter detects a flow rate of at least 0.5 mL/min, at which at that point, the valve is said to be leaking. The program stops, and the final angle measurements are recorded through LabVIEW.

Electrical Schematic
LabVIEW Code Part 1 LabVIEW Code Part 2
NASA LSPACE Project Image

NASA L’SPACE MCA PDR

Participated as a thermal engineer in NASA's L’SPACE Mission Concept Academy, supporting thermal system design for a robotic rover.

Youtube link for Preliminary Design Review Presentation: https://www.youtube.com/watch?v=huHxGpcssT0

  • Supported rover thermal system design by researching similar mission architectures, performing subsystem trade studies, and creating CAD models using Siemens NX.
  • Engaged with NASA scientists and engineers through weekly lectures and collaborative project work, developing technical and teamwork skills for aerospace engineering.

My Projects (Page 2 of 6)

Digital PID Controller

Implemented a digital PID controller for a turntable speed control system, meeting strict performance criteria.

Youtube link: https://youtube.com/shorts/06u0TNoQ8cU?feature=share

  • Tuned the system to achieve a percent overshoot of less than 10%, settling time less than 500 ms, and rise time less than 200 ms.
  • Utilized custom LabView software for real-time data acquisition and tuning, alongside MATLAB for theoretical simulations and analysis.

Hot Water Dispenser

Conceptual design and CAD modeling of an in-line water heater for instant hot water delivery at the kitchen sink.

Youtube link: https://youtu.be/bsZSv6ZIcn8

  • Developed 3D CAD models via Autodesk Inventor for the entire water heater system, incorporating market and instrument research to inform the design.
  • Created a detailed, costed bill of materials for the system, supporting efficient sourcing and project planning.

My Projects (Page 3 of 6)

Fin Cooled Meatball

Finned and Unfinned Meatballs Meatball Heat Transfer Calculations and Graphs

Studied the heat transfer of a meatball and compared the heat transfer rate between a finned and an unfinned meatball.

Rapid Prototyping Project

RP Drawing RP Inspected Drawing

Designed and additively manufactured an object using CAD and 3D printing, verifying tolerances with GD&T.

My Projects (Page 4 of 6)

CNC Project

CNC Machine CNC Cross Section

The goal of this project was to gain hands-on experience with CNC machining by manufacturing a part from start to finish.

  • Created a fully dimensioned and toleranced technical drawing for a custom part.
  • Wrote G-code to control the CNC equipment based on the technical drawing.
  • Verified tolerances of the finished part with GD&T.

Aluminum Car Project

Aluminum Car

Worked with machines such as a milling machine to shape a block of aluminum into a small car...

  • Used a lathe to create the four circular wheels on the car, including a diameter change in the middle of the wheels.
  • Tools used include measurements with a dial caliper and height gauge, and use of a milling machine and lathe.
  • Followed 2D schematic drawings and measurements to meet the correct tolerances for the design.

My Projects (Page 5 of 6)

Graphical Synthesis of a Planar Linkage

Designing a planar four-bar linkage replicating a hand-lever shear mechanism, later expanding to a six bar linkage.

Youtube link: https://youtu.be/AEvU8rkVeVg

  • Engineered a collision-free four-bar linkage, and elimininating branch defects through a six-bar system.

Elon's Dog

Elon's Dog Rover

Collaborated with a teammate to design and assemble a functional rover via Fusion 360 as part of MEC 203 CAD Design coursework.

Youtube link: https://www.youtube.com/watch?v=YFzuG-PlZ_0

  • Utilized Fusion 360 to create detailed CAD models for the wheels, camera, gripper arm, and chassis, as well as motion studies and animations.
  • Produced technical drawings and participated in the assembly process, integrating all individual parts into the final rover design.

My Projects (Page 6 of 6)

Dogbot Project

Dogbot Image 1 Dogbot Image 2

Developed a 2-wheel drive object-following robot that tracks a red-colored ping pong ball.

Youtube link: https://youtu.be/QrNlm4vepcM

  • Utilized Tinker CAD to sketch out mechanisms of individual parts as well as the electronic components of the robot before production.
  • Ensured structural competency of each component to ensure the robot doesn’t fail under stress.

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