HelloblueGK — open-source aerospace engine simulation
We are open-sourcing HelloblueGK: a .NET 9 platform for multi-physics engine simulation, AI-assisted optimization, and reference certification workflow APIs.
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 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.