EngineCalc vs LaunchLogic

EngineCalc is a collection of useful formulas (calculators) for those involved with powersports or engine tuning, in general. Instead of carrying around a laptop or relying on access to a desktop computer with a spreadsheet, you can get the calculations you need right on the handy iPhone in your pocket. Here is a partial list of the "calculators" provided here in EngineCalc: * Actual Volume Flow * Air Density * BHP Loss * Compression Height * Compression Ratio * Corrected BHP * Cylinder Displacement * Horsepower * Mass Flow * Piston Dome Volume * Piston Speed * Rod Length * Simple Horsepower * Theoretical Volume Flow * Torque * Volumetric Efficiency

This tool provides an easy interface for various commonly used calculations in hobby rocketry. These include metric to imperial conversion, DD to DMS for GPS coordinates, Thrust to Weight ratio, Ejection Charge size calculations, Vent Hole sizes, Fin Flutter boundary thresholds etc. The user can also find out more information about the various calculations with the info panels and adjust the calculation panels to their liking.