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I need a complete preliminary design for a liquid-propellant rocket engine. The exact configuration—bipropellant, monopropellant, or cryogenic—will be chosen after an initial trade study, so the first milestone is a concise comparison of those three options against the mission profile, target thrust class, reusability goals, manufacturability, and cost. Once the architecture is selected, the work will expand to: • Thermodynamic performance sizing (CEA or equivalent codes) • Combustion chamber and nozzle geometry with regenerative or dump cooling strategy defined • Turbopump or pressure-fed feed system calculations • Injector layout and mixture ratio optimisation • Hot-section FEA for thermal and structural margins • Manufacturable CAD models (SolidWorks or Fusion 360 preferred) • A brief technical report summarising assumptions, analysis, and resulting performance with at least a 10 % margin Mission requirements (∆v budget, envelope limits, propellant choices, and duty cycle) will be provided at project start. Deliverables must include the native CAD files and all analysis spreadsheets or Python/MATLAB notebooks so I can iterate internally. The design should close on paper for a minimum of ten reuse cycles and be ready to hand straight to detailed-design and prototyping teams.
Project ID: 40516159
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36 freelancers are bidding on average €494 EUR for this job

With a professional corporate CAD background in complex sheet metal design and fabrication optimization, I have the right skills to drive your rocket engine project to success. Apart from my expertise in SolidWorks and Fusion 360, I’m well-versed with the mechanical and technical aspects of your project including thermodynamic considerations thanks to years of handling similar projects. I believe in pushing boundaries and creating designs that are not just functional, but also highly manufacturable. My eye for detail has helped me carve a niche all these years and is one of the reasons why my output has consistently been fabrication-tested. As you iterate internally, it is indeed essential for me to provide all native CAD files and analysis spreadsheets or Python/MATLAB notebooks. I'm well-versed with these softwares enabling me to accurately prepare CNC-ready files while optimizing material use. Your design will be meticulously detailed catering to aspects like grain direction, bend programDxf for CNC press brake and more ensuring not only functional but structurally robust designs. Let my 186 positive reviews and 99% on-time delivery rate reassure you that your project will be handled with utmost diligence and precision
€666 EUR in 6 days
7.0
7.0

With a robust skillset in Aeronautical and Aerospace engineering, I bring the necessary experience to deliver a top-tier preliminary design for your liquid-propellant rocket engine. I am well-versed in CAD/CAM and proficient in the use of Solidworks—precisely the software of choice you preferred. My familiarity with critical tools such as CEAs and my expertise in thermodynamic performance sizing make me an excellent choice for this project. Moreover, I have an extensive background in engineering drawing and Finite Element Analysis (FEA), which is essential for your thermal and structural margins. My goal-oriented approach will ensure that your design close on paper with a minimum of ten reuse cycles—as desired. In addition, my understanding of mission requirements will guarantee your project aligns seamlessly with your ∆v budget, propellant choices, envelope limits, and duty cycle. Closing, I pledge to provide all deliverables inherent to this project: native CAD files alongside analysis spreadsheets or Python/MATLAB notebooks for continuous internal iteration. Consider me as a reliable partner who will carry you from preliminary design through detailed-design to prototyping with skillful expertise and timely communication.
€250 EUR in 2 days
6.6
6.6

Hi, I understand you need a preliminary liquid rocket engine design that starts with a trade study comparing propulsion architectures and then progresses through performance sizing, feed-system calculations, thermal/structural analysis, CAD development, and technical documentation. I’m a Mechanical Design and Simulation Engineer with 15+ years of experience in SolidWorks and Ansys, specializing in 2D/3D modeling, prototyping, CFD, FEA, and thermofluid analysis. I have worked on complex fluid-flow and thermal engineering projects involving performance optimization, pressure systems, structural assessment, and manufacturable CAD design supported by detailed engineering calculations and reports. My approach is to build a traceable design workflow, ensuring that assumptions, analyses, and CAD models remain easy to review and iterate internally. What thrust class and mission profile are you targeting, and have any propellant combinations already been shortlisted? If useful, I can outline a preliminary trade-study framework before the project begins.
€250 EUR in 3 days
4.6
4.6

Hello, I've reviewed your project and understand the objective is to develop a complete preliminary rocket engine design beginning with a disciplined trade study and progressing through performance analysis, feed system selection, thermal evaluation, CAD development, and supporting engineering documentation. I can support the evaluation process by comparing the candidate architectures against mission requirements, manufacturability, lifecycle objectives, and system level constraints to establish a technically justified design direction before detailed development begins. The work will be approached as an integrated engineering study, ensuring that performance assumptions, thermal considerations, structural margins, and design decisions remain traceable throughout the analysis and documentation package. I have experience working on advanced mechanical design and engineering analysis projects, and I can share relevant examples once we connect. Also a quick question, is reusability a primary design driver from the outset, or is maximum performance the higher priority for the trade study? Best Regards, Muskan
€250 EUR in 1 day
4.2
4.2

Hello, I am a Mechanical Engineer specializing in CFD, FEA, thermal analysis, CAD design, and engineering simulations using ANSYS, MATLAB, SolidWorks, Fusion 360, and COMSOL. My experience includes thermodynamic analysis, heat transfer, pressure vessel and piping analysis, heat exchangers, pumps, turbomachinery, structural FEA, thermal-structural simulations, and detailed CAD development. I can support the preliminary design process through engineering calculations, CAD modeling, structural assessment, thermal analysis, and technical documentation. Before providing a final proposal, I would like to understand the mission requirements in more detail: • Target thrust level (N or kN) • Desired propellant combinations • Chamber pressure range • Burn duration • Pressure-fed or turbopump-fed architecture preference • Reusability requirements • Target altitude (sea-level, vacuum, or both) • Mass and dimensional constraints • Expected level of design maturity Based on the provided requirements, I can assist with architecture trade studies, thermodynamic sizing, combustion chamber and nozzle CAD development, thermal analysis, structural FEA, and engineering documentation. Please share the mission profile and performance targets so I can evaluate the scope accurately and provide a realistic cost and schedule estimate. Regards, Mohammad Haris CFD | FEA | CAD & Thermal Systems Engineer
€1,250 EUR in 30 days
3.7
3.7

Good Day, Sir, I'm Eng. Sahad Ahmed, a Mechanical Engineer and professional CAD designer with experience since 2021. After reviewing your project, I found it particularly interesting due to its combination of propulsion system design, engineering analysis, and practical product development. My expertise includes SolidWorks, ANSYS, Fusion 360, FEA, engineering calculations, and manufacturing-oriented design. I enjoy working on technically challenging projects where engineering decisions must be supported by sound analysis and practical implementation. Your phased approach is exactly how I would approach the project. Beginning with a trade study of monopropellant, bipropellant, and cryogenic systems based on specific impulse, reliability, complexity, manufacturability, reusability, and cost will provide a strong foundation before detailed design begins. What I bring to a project is an engineering mindset focused on creating solutions that are not only analytically sound but also practical to manufacture, test, and refine. I pay close attention to documentation, design assumptions, and model organization to ensure future iterations can be carried out efficiently. I'd be happy to discuss the mission profile, thrust requirements, and project objectives in more detail. Best Regards, Eng. Sahad Ahmed K. Mechanical Engineer | SolidWorks | ANSYS | Fusion 360
€500 EUR in 10 days
4.1
4.1

Hi, good day! I would like to apply for this project. I can support the full preliminary design of your liquid rocket engine, including trade study between bipropellant, monopropellant, and cryogenic options, followed by performance sizing, system architecture selection, and manufacturable CAD development. I have experience in propulsion system analysis, thermodynamic modeling, and CAD-based mechanical design, and can deliver clear reports, calculations, and native CAD files for further iteration and prototyping. I look forward to working with you. Thank you.
€350 EUR in 2 days
3.1
3.1

With over a year of experience as a CAD/CAM engineer and proficiency in SolidWorks, I am confident in my ability to tackle your project. While my prior work has focused on graphics and design for a range of clients, I have a deep-rooted passion for mechanical engineering and rocket science and have been consistently investing time and effort to build my expertise in these areas. Given that, this opportunity to lend my skills to the design of a liquid-propellant rocket engine is both exciting and purposeful for me.
€255 EUR in 1 day
3.8
3.8

I understand you require a preliminary design for a liquid-propellant rocket engine, beginning with a trade study comparing bipropellant, monopropellant, and cryogenic options against your mission profile, thrust, reusability, manufacturability, and cost goals. I recently completed a similar trade study for a conceptual launch vehicle, identifying the optimal propellant combination that reduced projected manufacturing costs by 15%. The first deliverable will be a concise report detailing the trade study findings and recommending an engine architecture. Following your selection, I will perform thermodynamic performance sizing using CEA, generate chamber and nozzle geometry with a defined cooling strategy (regenerative or dump), and provide preliminary turbopump or pressure-fed system concepts, all documented in detailed CAD models and technical reports. What is the target specific impulse range for the engine? Ready to start as soon as you confirm scope.
€500 EUR in 21 days
2.3
2.3

Hello, I see you're working on a liquid-propellant rocket engine design requiring advanced mechanical engineering skills and CAD modeling expertise. With my experience in CAD/CAM, Solidworks, and Fusion 360, I can develop detailed manufacturable CAD models and perform finite element analysis to ensure structural integrity. My background also includes thermodynamics, essential for accurate performance sizing and nozzle geometry optimization. I understand the importance of comprehensive analysis and clear documentation, and I will deliver all files and reports promptly, tailored to your reuse and manufacturing goals. Looking forward to helping you achieve a robust design that supports multiple reusability cycles and integrates seamlessly with your team’s next steps. Let’s discuss your initial trade study criteria and project timeline soon. What are the key parameters of the mission profile that will influence the trade study and overall engine design?
€250 EUR in 1 day
1.9
1.9

Hi, Successful rocket engine design requires precision, engineering expertise, and careful attention to performance and manufacturability. I can assist with liquid rocket engine design, including 3D CAD modeling, component design, assemblies, technical documentation, and engineering-focused visualization. My focus is on delivering accurate, high-quality designs that align with your project requirements and development goals. With experience in CAD design, mechanical engineering, SolidWorks, Fusion 360, and complex mechanical assemblies, I can provide professional and reliable results. I'd love to review your specifications, design objectives, and project scope to discuss the best approach. Best regards, Diksha L.
€250 EUR in 1 day
0.0
0.0

Hello there, I am excited about the opportunity to work on designing a liquid-propellant rocket engine for your project. With my extensive experience in aerospace engineering and propulsion systems, I am confident in my ability to deliver a comprehensive preliminary design that meets your requirements. I propose to start by conducting a detailed trade study to compare bipropellant, monopropellant, and cryogenic configurations based on the mission profile, target thrust class, reusability goals, manufacturability, and cost. Once the optimal architecture is selected, I will proceed with thermodynamic performance sizing, combustion chamber and nozzle geometry design, turbopump calculations, injector layout optimization, and FEA analysis for thermal and structural margins. My proficiency in using CEA and SolidWorks will ensure accurate analysis and manufacturable CAD models. I will provide a detailed technical report summarizing the analysis, assumptions, and resulting performance with a margin of at least 10%. The design will be aimed at achieving a minimum of ten reuse cycles and will be ready for handover to detailed-design and prototyping teams. I look forward to working collaboratively with you to create a cutting-edge rocket engine design that exceeds your expectations. Please feel free to reach out if you have any questions or need further clarification. Ihsan Faridi
€500 EUR in 7 days
0.0
0.0

We’ve recently helped businesses and brands achieve stronger growth through high-converting digital solutions, helping them improve engagement, increase visibility, and reach their business goals with professional, results-driven development. I understand the need for a clean, professional, and seamless liquid rocket engine design that aligns with your mission requirements and reusability goals. Our expertise in thermodynamic performance sizing, combustion chamber design, turbopump calculations, injector layout optimization, and CAD modeling make us well-equipped for this project. We have successfully delivered similar projects with a focus on efficiency, performance, and manufacturability. Our commitment to meeting your specific needs and delivering high-quality results sets us apart. Regards, Riyaat
€400 EUR in 7 days
0.0
0.0

Dear Hiring Manager, I am a multidisciplinary mechanical and aerospace-oriented engineer with strong experience in thermofluid systems, CAD-based mechanical design, and numerical simulation. I am confident in supporting the complete preliminary design phase of a liquid-propellant rocket engine, including trade studies, performance sizing, and manufacturable system definition. I understand that the first milestone focuses on a structured comparison between bipropellant, monopropellant, and cryogenic architectures. I will evaluate each configuration against mission delta-v requirements, thrust class, reusability targets, cost constraints, and manufacturing feasibility. The output will be a clear engineering trade study supported by quantitative assumptions and first-order performance models (Isp, chamber pressure scaling, mass flow, and system complexity indices). My workflow is structured around iterative validation loops between thermodynamic modeling, structural constraints, and manufacturability considerations to ensure the design closes consistently on paper for multi-cycle reuse (≥10 cycles as specified). All deliverables will include editable CAD files, calculation sheets, and Python/MATLAB scripts to enable your internal iteration and further optimization. I am ready to begin with the trade study immediately and align closely with your mission constraints and development roadmap. Sincerely, James.
€500 EUR in 7 days
0.0
0.0

✅✅✅Dear Hiring Manager,✅✅✅ I specialize in mechanical system design and computational engineering for high-performance aerospace and propulsion applications, combining CAD modeling, thermodynamic analysis, and system-level design optimization. I understand your project requires a full preliminary rocket engine design starting with a structured trade study of bipropellant, monopropellant, and cryogenic configurations. My approach is to deliver a clear decision framework based on: Mission delta-v and thrust requirements Reusability and duty-cycle constraints Cost vs. performance trade-offs Manufacturing complexity and material limitations System reliability and operational simplicity The outcome of this phase will be a ranked engineering recommendation supported by first-principles calculations and comparative system modeling. I will ensure all outputs are structured for handoff to detailed design and prototyping teams, including fully editable models and computation notebooks for internal iteration. My focus is to deliver not just a concept, but a technically consistent, manufacturable, and scalable preliminary engine design that closes on paper for multi-cycle reuse. Looking forward to collaborating on this high-impact engineering system. Best regards,
€700 EUR in 2 days
0.0
0.0

Hello! This project is a strong match for my background in advanced engineering design, thermofluid systems, and CAD-based product development. I have experience working on complex multi-physics systems where early-stage trade studies and system architecture decisions strongly influence downstream performance and manufacturability. One challenge I’ve encountered in similar preliminary design work is managing tightly coupled subsystems where changes in one area (e.g., feed system or thermal strategy) significantly impact chamber sizing, mass budget, and overall performance assumptions. To handle this, I focus on maintaining a clear system-level model from the start, so trade-offs remain traceable and consistent throughout iterations. I can support the full workflow from initial propulsion architecture trade study through performance sizing, subsystem definition, and manufacturable CAD models, along with structured analysis outputs (spreadsheets or Python/MATLAB notebooks). I also ensure documentation is clear enough for direct transition into detailed design and prototyping. I’d be happy to discuss mission requirements and begin structuring the trade study.
€350 EUR in 1 day
0.0
0.0

With nearly two decades of experience spanning academia, software engineering, and technology leadership under my belt, I am not your standard rocket scientist. Driven by curiosity and a knack for solving complex problems, I have successfully explored the limitless possibilities that come with AI and Machine Learning to create innovative solutions. This unique perspective, combined with my proficiency in SolidWorks, makes me an ideal candidate for your Liquid Rocket Engine Design project. Drawing from my extensive background developing AI-powered systems and predictive analytics tools, I am well-versed in the meticulous analysis your project necessitates. Whether it's employing CEA or equivalent codes for t Lastly, but most importantly, I understand the pressures associated with handing over a design that has gone through thorough iterations internally. Ensuring seamless integration between detailed-design and prototyping teams is one of my core strengths. My experience extends beyond simply completing projects; I specialize in presenting them with clarity and completeness in concise technical reports. Consider this my promise - with my skillset and commitment to quality, you can trust that your liquid-propellant rocket engine design will be ready to hit the ground running toward its reusable future.
€250 EUR in 7 days
0.0
0.0

Nice to meet you , It is a pleasure to communicate with you. My name is Anthony Muñoz, I am the lead engineer for DSPro IT agency and I would like to offer you my professional services. I have more than 10 years of working as a Backend and Software developer, I have successfully completed numerous jobs similar to yours therefore, and after carefully reading the requirements of your project, I consider this job to be suitable to my area of knowledge and skills. I would love to work together to make this project a reality. I greatly appreciate the time provided and I remain pending for any questions or comments. Feel free to contact me. Greetings
€936 EUR in 7 days
0.0
0.0

Hi there, As an engineering researcher with a strong background in complex mathematical modeling and fluid-thermal systems, I can deliver a rigorous, mathematically sound design for your Liquid Rocket Engine (LRE). Rocket engine design requires strict adherence to thermodynamic principles, not just basic CAD modeling. I will ensure your engine is designed for optimal specific impulse (Isp) and structural integrity. My Execution Strategy: Thermodynamic Analysis: I will utilize NASA CEA alongside custom Python scripts to calculate theoretical combustion temperatures, characteristic velocity (c*), and optimal expansion ratios based on your chosen bipropellant mixture (e.g., LOX/Kerosene or LOX/Methane). Engine Sizing & Injector Design: I will mathematically size the combustion chamber, throat, and bell nozzle using isentropic flow equations. I will also design the injector plate (impinging or coaxial) to ensure proper atomization and combustion stability. Thermal Management: I will calculate wall heat flux and design the necessary cooling architecture (regenerative cooling channels, film cooling, or ablative sizing) to prevent throat degradation. CAD & CFD Validation: I will deliver the complete 3D CAD models and set up the ANSYS CFD parameters to validate pressure gradients and exhaust velocity. Could you please specify your target thrust class and preferred propellant combination? Best regards,
€650 EUR in 16 days
0.0
0.0

Hello, I am an Aerospace/Mechanical Engineer experienced in propulsion concepts, thermodynamic analysis, and CAD-based preliminary design. I can complete the trade study between bipropellant, monopropellant, and cryogenic systems, followed by sizing, performance modeling, and preliminary engine layout once the configuration is selected. I work with CEA-type analysis tools, CAD (SolidWorks/Fusion 360), and structured engineering reports with full supporting files for iteration. Available to start immediately. Best regards,
€400 EUR in 3 days
0.0
0.0

Setúbal, Portugal
Member since Jun 15, 2026
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