3D‑printed methane igniter model posted for reliable re‑ignition
LEAP 71 shared a 3D‑printed augmented spark igniter design aimed at reliable ignition and re‑ignition with methane/oxygen/nitrogen — a practical bit of open innovation for modern propulsion testing. The post gives a tangible design example students can study for rocketry ignition challenges. (x.com)
LEAP 71 published a downloadable archive for the igniter design that the site describes as a ~400 MB ZIP which expands to a single STL print file of roughly 1.2 GB, intended for metal Laser Powder Bed Fusion.. (leap71.com) The downloads page explicitly states the model is optimized for metal LPBF but also “prints well on resin- and filament-based 3D printers,” indicating the shared asset targets both industrial and desktop prototyping workflows.. (leap71.com) LEAP 71’s press material ties advanced ignition hardware to its methalox test campaign, noting an “advanced ignition system” was tested to improve startup and shutdown transients, especially for their aerospike engine.. (leap71.com) The company’s December test campaign included two 20 kN methane/liquid-oxygen engines — a conventional bell nozzle and a full-scale aerospike — which LEAP 71 says went from specification to hot-fire in under three weeks.. (3dprintingindustry.com) LEAP 71 attributes these component outputs to its Noyron Large Computational Engineering Model and publishes supporting software and example artifacts via GitHub and PicoGK as part of a staged open-source program.. (github.com) The igniter’s metal-print orientation and material guidance align with LEAP 71’s partnerships with industrial AM suppliers — the company has used CuCrZr copper alloy prints and worked with firms such as Aconity3D and HBD on larger cryogenic methalox engine hardware, including a 200 kN aerospike showcased at TCT Asia 2026.. (3dprintingindustry.com)
