Mechanical Engineering Forest Park

Nageswaran Ganapathy Narayanan

Lake Forest Park, WA 98155

Liquid and Cryogenic Rocket Propulsion Development Leadership

Education and Training

April,2015 Master of Technology (M Tech, Thermal Science) College of Engineering Trivandrum, Kerala,

Thesis: " Investigations of the effect of siphon drain and tank bottom shapes on critical height” a basic derivation and solution for critical height of drain vortex for siphon and downward drains in flat and spherical shape tanks as well as devising experiments for critical height to validate the solution using the models derived.

9.25/10 GPA and 1st Rank in batch.

Feb, 1985 B.E(Honours) in Mechanical Engineering Thiagarajar College of Engineering. Madurai, India

Honours specialization: Gas turbines, jet propulsion and automobile Engineering.

2nd Rank in batch, with 82.5% Aggregate

Work Experience 1985 - 2024

Liquid Propulsion Systems Centre, (LPSC) Indian Space Research Organisation (ISRO) Trivandrum, Kerala, India

Mar 2003 - Apr 2024: Led the Cryogenic rocket propulsion system team and retired as Deputy Director, Cryogenic Propulsion systems.

I led the development of cryogenic rocket propulsion systems design / development for engines and stage systems LOX/LH2/RP1/LCH4 propellants

Chaired more than 400 review meetings on design, hardware readiness, tests and performance assessment, clearance for rocket missions.

I analysed nearly 90 or more propulsion system failures either in flight or during ground tests for failure cause, mode as well as plan simulation tests to demonstrate that. Adopted detective skills, applied science and engineering fundamentals as well as sense of logical reasoning.

I reviewed the Moon landing Chandrayan 3 lander propulsion system design improvements, tests plan and performance assessment in tests, flight hardware readiness & mission data.

I led the QA team for operational and developing cryogenic rocket propulsion systems, on QA / QC plan, flight acceptance & design qualification tests plan. Auditing of log sheets to prepare Product Assurance document, for every cryogenic flight article. Apr 1985 – Feb 2003 Team player in rocket propulsion systems, worked as a Scientist in liquid rocket propulsion systems dynamics

Developed a limited elements model of liquid propulsion dynamics for structure-coupled pogo instability analysis and carried out pogo instability analysis using QBasic & MATLAB

Generated dynamic models for engine control systems and devised experiments to generate data for use as well as modelled and assessed Pogo-Vehicle control interaction.

Designed & delivered pogo correction systems for liquid stage Publications

My most significant research work was done as part of my Masters thesis and was published as ’Investigations of the effect of siphon drain and tank bottom shapes on critical height’, Thesis report.

373738047; Research Gate DOI: 10.13140/RG.2.2.10549.04 1-206-***-**** 206-***-**** Nageswaran ************@*****.***

“Analytical models for critical heights of vortexing in flat and spherical bottom tanks with siphon and bottom drains” 2023’.

Nageswaran G et al., Journal of Aerospace Engineering Proc IMechE Part G: J Aerospace Engineering 2023, Vol. 0(0) 1–10. © IMechE 2023. DOI: 10.1177/09544100231205141.

International Astronautical Congress IAC Publications 1. ‘Fluid - Structural Interactions and Control in PSLV Second Stage’, IAF 00 A.6.11; 51st International Astronautical Congress, Rio de Janeiro Brazil. 2. Engineering challenges in configuring a modular cryogenic upper stage IAC-20, C2,1,2, x57306

3. Design & Development of Propellant Intake Device for Cryo Upper Stage LOX Tank IAC-20, C4,2,2, x 57098

4. A technology for improving regenerative cooling in advanced cryogenic rocket engines for space transportation

IAC-20, C4, VP,14, x58717

5. Experimental validation of Service Module Propulsion System Modelling Capabilities for the Human Space Flight Mission

IAC-22, B3,1,6, x70945

6. Temperature distribution along a composite and metallic shell in cryogenic environment IAC-22, C2,7,7, x69665

7. Progress on LOX-LNG propulsion technology at ISRO. IAC-22, C4,1,5, x70925

Accomplishments and Awards

Member of ISRO Strategic Planning group (50) to chart out 25-year organisational plan and strategies and contributed to space transportation & human resources.

Designed Cryogenic stage LOX tank siphon intake system, test verified the design.

ISRO Team excellence award for the contribution as

- Quality team leader for first successful Cryogenic stage flight GSLV D5.

- Successful simulation of high-altitude test facility for CE20 Cryo engine. Skills and Expertise

I have developed expertise in the following specialisations

Design Review of Cryogenic rocket propulsion system design for missions

Failure and Anomaly resolution of rocket and spacecraft propulsion systems

Development of analytical models of propulsion systems dynamics

Quality Assurance process of cryogenic rocket propulsion systems.

I possess the skills to programming in QBasic and analysing models in MATLAB & Simulink Summary

Accomplished expert of liquid and cryogenic propulsion systems at ISRO LPSC, cryogenic propulsion system design and as quality assurance leader.

Developed expertise in mathematical modelling and dynamic test plan for propulsion systems, problem-solving and team collaboration skills as project leader, to effectively resolve complex issues, ensuring high-performance standards and reliability in propulsion systems.

Developed expertise to review critical aspects of complex space missions like Chandrayan-3

I am an expert in failure or anomaly resolution of rocket propulsion systems. Interests in Job profiles for Mechanical Engineering

Conduct critical reviews, optimise system design, processes, and testing rocket propulsion

Dedicated and sincere service mindset, extended hours of work

Extensive travel for inspection, witnessing tests and certification (In USA and abroad)

Good team player to share, mentor and motivate the teams

Ready to take any challenging assignment in mechanical engineering system design & tests

Contact this candidate