LRE Estimator
LRE Estimator is a web-based design tool for preliminary Liquid Rocket Engine calculations. It is based on How to Design, Build and Test Small Liquid-Fuel Rocket Engines, published by Rocketlab / China Lake, California, which serves as the foundation for the underlying design methodology and equations.
The tool provides an interactive interface for first-order estimations of engine parameters such as thrust, specific impulse, and oxidizer-to-fuel ratio, with live result updates as inputs change.