Aerospace Engineer from Nepal

Fueling rockets from the ground up

Aerospace engineer from Nepal working at the frontier of rocket propulsion designing, analysing, and hot-fire testing liquid, solid, and hybrid engines. Currently contributing to a 25 kN LOX/RP-1 propulsion system for an orbital launch vehicle.

3+
Years Experience
5.5kN
Bipropellant LRE
10kft
Sounding Rocket
Prashant Kumar Modak
About

Engineer at the edge of combustion

I am Prashant Kumar Modak, an aerospace engineer from Nepal working at the intersection of rocket propulsion, advanced space technology, and human spaceflight.

My engineering experience spans liquid, solid, and hybrid rocket propulsion including propulsion-system design, performance analysis, combustion, feed systems, instrumentation, integration, and hot-fire testing. I currently contribute to a 25 kN LOX/RP-1 propulsion system for an orbital launch vehicle.

My research interests include cryogenic propulsion, two-phase flow, cavitation, flashing, and feed-system dynamics. My broader interests encompass space exploration, astronaut training, space medicine, and the technologies that will enable future crewed missions beyond Earth.

Jan 2025 — Oct 2025
Propulsion Engineer
SpaceFields Pvt. Ltd.
  • Designed, developed, and tested advanced solid propulsion systems for aerospace and defense applications.
  • Evaluated ballistic performance of composite propellants before large-scale grain manufacturing.
  • Oversaw combustion chamber design for high efficiency and enhanced spray characteristics.
  • Designed air inlet systems with centrifugal and axial compressors for altitude-optimised combustion.
  • Managed P&ID design for propulsion system integration and reliability.
Mar 2024 — Jan 2025
Lead Propulsion Engineer
Kalpana Chawla Space Research Center
  • Led development of a 5.5 kN bipropellant liquid rocket engine using a Rectangular Double Slit Pintle Injector.
  • Spearheaded design calculations, integration, and assembly under rigorous technical and safety standards.
  • Designed and tested a high-efficiency torch ignitor using GOX and hydrocarbon fuel at 5 MPa conditions.
  • Oversaw engine test bed development and coordinated with cross-functional teams to achieve project milestones.
Feb 2023 — Mar 2024
Team & Propulsion Lead
Triton Rocketry — Spaceport America Cup
  • Led a multidisciplinary team for a Spaceport America Cup 2024 mission: a sounding rocket targeting 10,000 ft apogee.
  • Owned propulsion and payload mechanical systems; proficient in NASA CEA, RPA, and OpenRocket.
  • Directed in-house design and additive manufacturing of rocket components.
  • Engineered an experimental payload with a sophisticated acoustic isolation system.
Feb 2024 — Jan 2025
Student Secretary
Dept. of Aerospace Engineering, Chandigarh University
  • Represented students and co-ordinated departmental events, workshops, and competitions.
  • Served as liaison between students and faculty, facilitating departmental initiatives.
Technical Proficiency
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Propulsion Systems
LOX/RP-1 Hybrid Propulsion Bipropellant LRE FFSCC Solid Motors Pintle Injectors Thrust Chamber Design Cryogenics Combustion Analysis
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Design & Simulation
SOLIDWORKS Fusion 360 ANSYS CFD ANSYS FEA NASA CEA RPA MATLAB OpenRocket
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Manufacturing & Test
Additive Manufacturing P&ID Design Test Bed Development Engine Static Tests Instrumentation Data Acquisition
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Engineering & Docs
Technical Drawings Test Planning System Integration Safety Compliance Project Documentation
Liquid Propulsion · Kalpana Chawla Space Research Center
5.5 kN Bipropellant Liquid Rocket Engine
Led end-to-end development of a bipropellant LRE using ethanol and nitrous oxide, featuring a Rectangular Double Slit Pintle Injector. Designed and hot-fire tested a GOX/hydrocarbon torch ignitor at 5 MPa. Full engine test bed was developed and commissioned to validate performance and reliability.
5.5 kN rated thrust · pintle injector · 5 MPa torch ignitor
Sounding Rocket · Triton Rocketry
Spaceport America Cup 2024 Mission
Team & Propulsion Lead for a competition sounding rocket targeting 10,000 ft apogee. Designed propulsion and payload systems, directed additive manufacturing of components, and integrated an acoustic isolation payload.
10,000 ft target apogee · competition selected
Design Competition · AIAA
Mars Ascent Vehicle — AIAA Space System Design
Led university team in the AIAA Space System Design Competition, achieving 12th place globally. Design was based on NASA 2040 Strategic Cycle constraints for a Dual Lander Mars Ascent Vehicle.
12th global ranking · NASA 2040 constraints
High-Speed VTOL · AIAA Student Design
40th Annual Student Design Competition
Led propulsion design for a high-speed VTOL aircraft achieving 5,000 lb payload capacity. Implemented FOD protection and outwash mitigation systems while meeting stringent performance criteria.
5,000 lb payload capacity · VTOL propulsion
Education
Bachelor of Engineering
Aerospace Engineering
Chandigarh University, Mohali, India
Fluid Dynamics · Aero-Thermodynamics · Aircraft Propulsion · Rocket Propulsion · Gas Dynamics · Mechanics of Solids · Combustion Theory · Heat & Mass Transfer · Turbomachinery · Orbital Mechanics
Graduated
June 2025
01 Numerical Modelling of Shape-Controlled Flow Stability and Pressure Recovery in Supersonic Scramjet Isolator Submitted
02 Development of a Transient One-Dimensional Two-Phase Flow Solver for Cryogenic LOX/LCH4 Feed Systems SubmittedAIAA Journal of Propulsion & Power
03 A Non-Equilibrium Flashing Model for Methane Injection During Engine Startup SubmittedAIAA Journal of Propulsion & Power
04 Mathematical Prediction of Cavitation Inception and Pressure Oscillations in LOX Injectors SubmittedAIAA Journal of Propulsion & Power
05 Coupled Feed-System and Injector Dynamics for Startup Stability SubmittedAIAA Journal of Propulsion & Power
06 Design and Characterization of a Double Rectangular Slit Pintle Injector (DSRTPI) for N2O/Ethanol Liquid Rocket Engine Pending
07 Design and Development of a Bipropellant Liquid Rocket Engine Using Nitrous Oxide and Ethanol with a Novel Double Slit Rectangular Pintle Injector Pending
Nepal & Space

Putting Nepal on the orbital map

Nepal sits at the crossroads of geography and ambition a landlocked Himalayan nation with no coastline, no launch history, and no dedicated space law. Yet its high-altitude terrain, equatorial proximity advantage, and a growing generation of technically trained engineers make it a compelling candidate for indigenous space capability.

My work in this space combines original research, policy analysis, and public advocacy aimed at laying the technical and regulatory groundwork for Nepal's first orbital access capability and contribution to Asia's emerging space economy.

🛰️
Launch Trajectory Optimisation for Himalayan Launch Sites
Research into orbital insertion strategies and trajectory optimisation for small satellite launch vehicles operating from high-altitude, landlocked Himalayan terrain. Analysing the unique constraints and advantages including reduced atmospheric density, proximity to the equator, and debris avoidance corridors that shape launch architecture from Nepal.
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Space Law & Launch Regulation in Nepal
Nepal currently lacks a dedicated national space law or launch licensing framework. This research maps the gap between Nepal's international treaty obligations (Outer Space Treaty, Liability Convention) and the domestic legal infrastructure needed for commercial launches, frequency allocation, and satellite registration with comparative analysis of how other small nations have built their frameworks.
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Orbital Access for Small Satellite Launch Vehicles
Technical feasibility study for indigenous small satellite launch vehicles from Nepal covering propulsion architecture, staging strategy, payload-to-orbit sizing for LEO and SSO, and the engineering challenges unique to a landlocked, high-altitude launch environment. Includes mass-budget and delta-V analysis for sub-100 kg payloads.
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Building Nepal's Space Capability
Beyond research, I actively assist in building Nepal's broader space ecosystem connecting student engineers with propulsion and systems knowledge, advocating for national space policy, and supporting the creation of institutions that can anchor long-term aerospace capability in the country. Nepal's space age is not a distant prospect it is an engineering problem to be solved now.
Beyond the Clouds: The Rising Horizon of Space Tech & Aerospace Engineering in Nepal
A deep dive into Nepal's emerging aerospace landscape from its geographic advantages as a high-altitude launch candidate to the institutional, regulatory, and engineering steps needed to transform ambition into orbital capability. Covers the history of Nepali space interest, current gaps, and a roadmap toward an indigenous launch programme.
Read Article →

Let's build something that flies

Open to propulsion engineering roles, research collaborations, and aerospace projects pushing the boundary of what's possible. Based in Nepal — available globally.

prashantmodakkp11@gmail.com