Precision machining of large-dimensioned polyethylene pipes for innovative rocket engine test wanted

February 16, 2026

As part of a planned EU R&D project "Game Changing Innovations for European Launch Solutions 2026", an innovative aerospace SME from France is looking for an efficient plastics processor as a subcontractor for the machining of large-dimensioned polyethylene pipes (Ø 800 mm, length 6 m). We are looking for companies with proven expertise in the production and machining of large-format polymer pipes that would like to contribute to the validation of a new type of autophagic rocket engine.

Background

The French company is a technology-oriented SME in the aerospace sector that is coordinating a three-year R&D project (start 2027 - end 2029).
The aim of the project is to conduct hot-fire tests of a large-scale autophagic engine, a key milestone on the development roadmap for new launch vehicle solutions. The system comprises a paste extruder, a micromachining spindle, a continuous process chain up to sintering and an AI-supported defect correction system for ongoing defect detection and correction. It is modularly scalable and currently designed for component sizes of 300 x 300 x 200 mm.

Wanted partners and tasks

The focus of the cooperation application is the processing of a "burnable hull" in the form of a polyethylene pipe with an outer diameter of 800 mm and a length of 6 m, which is provided by extrusion suppliers. The partner we are looking for is to take on the following tasks in particular:
- External machining of the pipe diameter
- Insertion of a continuous internal structure ("tap") over the entire length of the pipe
- Execution of an internal cone shape at one end of the pipe

The ideal partner has extensive experience in the production and processing of large-scale polymer pipes, can customize solutions and iteratively develop processing concepts until the desired properties are achieved. A manufacturing solution in which the internal geometry (tap shape) can be changed easily, e.g. by changing the cutting or forming tool, is particularly advantageous.
A total of around 20 machined tubes are expected to be required over the course of the project from the end of 2027 to the end of 2029. The partner should be able to produce at least 10-15 tubes per year based on extruded tubes and provide all necessary special tools for machining. In addition, the partner is expected to provide the following services:
- Advice on the manufacturability of the required geometries and suggestions for optimization.
- Development and implementation of a suitable machining concept including tool design.
- Reliable information on costs and delivery times for the required components.

It is not absolutely necessary for the manufacturing partner to be based in Europe; the cooperation application is expressly aimed at large companies and SMEs worldwide.

For further information, please contact us quoting the reference number RDRFR20260210012. Deadline for submitting an expression of interest is February 27, 2026.