Peter Ha

Mechanical Engineer

Welcome to my website! I'm a mechanical engineer specializing in space propulsion systems based out of Boston. I also have experience in satellite operations and orbital dynamics.

Much of the site is in progress, and some needs updating. Take a look around, and check back in soon!


Experience

Propulsion Engineer (Full Time)

Rogue Space Systems Corporation

Served as principal investigator on a Direct to Phase II Small Business Innovation Research (SBIR) creating guidance algorithms for low thrust autonomous transfers in low Earth orbit and a Phase I SpaceWerx Small Business Technology Transfer (STTR) investigating novel applications for location and orbital propagation on autonomous satellites not reliant on GPS.

Worked on operations for Rogue's inaugural satellite, Barry-1, including LEOP, commissioning, and diagnosing off-nominal behavior. This will continue with the launch of Rogue's next satellite, Orbital Test Platform 2 (OTP-2) in Q1 2025.

Developed a fuel delivery system for a hall effect thruster for a National Science Foundation grant, maintaining a specified flowrate via sublimation through precise temperature control. Heater selection, placement, and slug geometry were selected following extensive simulation in Ansys.

Composed and lead campaigns for the on-orbit testing of hosted payload thrusters.

May 2022 - Present

Aerospace Engineering Intern

Rogue Space Systems Corporation

Integrated components and their interfaces for a 12U cubesat on a rapidly evolving mission on a tight timeline.

Liaised the integration of various parts from several manufacturers, ensuring their compliance with internal and external design criteria.

Integrated components and their interfaces for a 12U cubesat on a rapidly evolving mission on a tight timeline, while meeting regulatory and launch provider requirements.

Designed numerous brackets and mechanical interfaces in SolidWorks, and simulated mechanical stresses in Ansys Mechanical.

May 2020 - Jan 2021

Vice Director

Boston University Rocket Propulsion Group

Elected Vice Director of Boston University Rocket Propulsion Group, serving as the team's technical leader while adjusting to the changing status quo in the COVID-19 pandemic.

September 2020 - Present

Engine Development Lead

Boston University Rocket Propulsion Group

Pivoted from a new engine architecture towards iterating on a proven heritage, streamlining our testing timeline with a heavy focus on reducing cost, manufacturing difficulty, and system complexity.

Reconfigured an existing engine architecture to maximize performance on a minimal budget, focusing on simple manufacturability and easy iteration with a showerhead injector and ablatively cooled graphite combustion chamber.

Led a team of undergraduate and graduate students on a very tight timeline and budget in the design of a liquid bi-propellant, regeneratively cooled rocket engine

October 2020 - Present

Mechanical Engineer

Boston University Rocket Propulsion Group

Worked alongside undergraduate and graduate students in the design and assembly of launch vehicles and support systems for them

Designed, extensively simulated, assembled, and launched an H-class high powered rocket to reach an altitude of 2500 ft while sending telemetry data to a base station on the ground in a team comprised primarily of fellow freshmen

Developed the Ghost Series of engines, a pair of liquid bi-propellant coaxial swirl rocket engines for ground testing and flight vehicles, focusing on chamber and nozzle geometry, as well as engine structure

September 2018 - Present

Fellow

Committee to Elect Jay Gonzalez

Organized, canvassed, and called in a field-focused approach to promoting and supporting Jay Gonzalez's campaign for governor of Massachusetts, connecting to thousands of Massachusetts voters and activists, communicating with them about the issues facing both them and the Commonwealth

July - November 2018

Mechanical Student

FIRST Robotics Competition Team 125

Drafted, machined, and assembled engineering solutions for four robots, ranging in complexity from movement to manipulation systems on FRC team 125, the NUTRONs

Served as a leading mechanical student, finding solutions to complex engineering problems while working with and leading fellow high schoolers in designing a competition robot

September 2014 - April 2018

Education

Boston University

Bachelor of Science
Mechanical Engineering
Class of 2022
Relevant Coursework:
Mechanical Vibration, Compressible Flow and Propulsion, Aerodynamics, Space Vehicle Dynamics, Aircraft Performance and Design, Measurement and Instrumentation, Heat Transfer, Fluid Mechanics, Energy and Thermodynamics, Manufacturing Processes, Mechanics of Materials, Material Science, Intro to CAD, Electric Circuits, Probability Statistics and Data Science, Computational Linear Algebra
September 2018 - May 2022

Portfolio

Minimum Viable Lotus (MVL)

MVL is a liquid bi-propellant ablative rocket engine, with a graphite chamber and showerhead injector.

I lead redesign of the injector previously designed for our last generation of regeneratively cooled engines, now refocusing on the minimum cost and complexity engine capable of flight.

Redesign focused on tolerance analysis and optimization of DFM practices to make as many iterations as necessary in the event of failure in testing, or future design improvements, while creating a minimal budget hit.

Lotus Dev 3

LD3 is a liquid bi-propellant, regeneratively cooled rocket engine designed by a team of students. It builds on the Lotus series by dramatically cutting cost and complexity. Spearheading the project, I led the team direction in addition to injector design.

Note that as LD3 is still in the early phases of design, the attached reference photo is of LD2.


Casper

Designed to provide testing and operations experience, as well as data for more comprehensive thermal modeling, Casper was the result of two semesters of learning and rapid iteration. Casper is a liquid bi-propellant heatsink engine, and is planned for hotfiring when group travel is possible after the COVID-19 pandemic.

View Project

Skills

Design, Analysis, and Fabrication
  • Rapid prototyping and iteration
  • Design for manufacturing
  • Design for assembly
  • Rocket propulsion
  • Orbital dynamics
  • Manual and CNC milling
  • Manual and CNC lathes
  • Additive manufacturing
Software
  • SolidWorks
  • MATLAB
  • SolidWorks FEA
  • Ansys Mechanical
  • Systems Tool Kit
  • Python 3
  • General Mission Analysis Tool
Soft Skills
  • Leadership
  • Conflict resolution
  • Brightening the Teams chats with wit and light banter

Interests

In my free time, I am an amateur chess player and photographer. I have a soft spot for the Danish gambit and Sicilian dragon, and whatever the opposite of a soft spot is for the London. I primarily use a Canon AE-1 Program, Yashica Mat 124-G, and a Polaroid OneStep+.

Try the lichess.org daily puzzle!

My friend's cat, Fish. Taken on Kodak Ektachrome with my Canon AE-1 Program.