HelloblueGK is an independent open-source project we maintain at Helloblue — a .NET 9 aerospace engine simulation platform for integration, research, and contribution. The Community Edition ships under Apache 2.0 on GitHub.

It is not a fork of LEAP 71’s PicoGK geometry kernel, and it is not certified flight software. We publish it so engineers, researchers, and partners can study, run, and extend a serious simulation stack without mystique.

What is in the Community Edition

• Multi-physics coupling — CFD, FEA, thermal, and validation-oriented modules behind one platform
• Web API with Swagger, reference tests, and documentation you can clone and run locally
• AI-assisted optimization hooks for design exploration and workflow automation
• Certification workflow APIs — requirements traceability, problem reports, configuration management, test coverage, and code reviews — as reference tooling only
• Hosted reference deployment at hellobluegk.onrender.com (auth required; not an open sandbox)

Scope and boundaries

Community Edition code is for research, integration, and contribution — not a substitute for your own qualification program. Formal compliance packages, production certification evidence, and enterprise support live outside this repository.

Export-controlled programs need separate legal review. Secrets never belong in git; run your own instance when you need full control of registration, SSO, and environment configuration.

Get started

Clone the repository, build with the .NET 9 SDK, run the test suite, and start the WebAPI locally — Swagger is available at localhost:5000. Good first issues, discussions, and contribution guidelines are on GitHub.