Gas dynamics · Propulsion · Engineering tools
Engineering calculators for compressible flow and propulsion.
Classical one-dimensional gas dynamics and design-point cycle analysis, with the assumptions and equations shown. Everything runs in your browser; nothing to install and no data leaves your computer.
Calculators
Version 2.6
Compressible Flow Calculator
Enter any supported quantity and the remaining properties are solved, for any ratio of specific heats.
- U.S. Standard Atmosphere 1976
- Isentropic flow
- Normal and oblique shocks
- Fanno, Rayleigh and isothermal duct flow
- C–D nozzle with internal shock
- Prandtl–Meyer expansion
- Pitot and airspeed relations
Version 1.5.1
Propulsion System Analysis Calculator
Design-point cycle analysis from flight conditions to thrust, power and fuel consumption.
- Turbojet and turbofan
- Turboshaft and turboprop
- Ramjet and scramjet
- Constant or variable gas properties
- Convergent and C–D nozzles
- Parameter sweeps and engine comparison
- CSV export
About these tools
Each calculator states its model assumptions, validity limits and references next to the results. They are intended for preliminary analysis, education and checking hand calculations, not as a substitute for detailed design tools.
- Models
- Perfect-gas, steady, one-dimensional relations unless noted
- Units
- SI and English
- Runs
- Entirely in the browser, offline once loaded