Describe an existing aircraft
Given an aircraft's geometry, drag and engine, this computes stall speed, top speed, climb rate, ceilings and Breguet range. Start from a preset, then change numbers.
Results will appear here.
Describe the mission, get the aircraft
Enter what the aircraft must do. The tool builds a constraint diagram (Raymer / Gudmundsson) to find the wing loading and power loading, then sizes the take-off mass, wing area and engine.
Results will appear here.
Fly a rocket
Enter the airframe and motor (from the motor's catalogue page, e.g. thrustcurve.org). The flight is integrated numerically with thrust, gravity and altitude-dependent drag.
Results will appear here.
Ideal rocket equation
Δv = Isp · g0 · ln(m0 / mf). Either compute Δv from masses, or the propellant needed for a target Δv.
Results will appear here.
Standard atmosphere lookup
Temperature, pressure, density and speed of sound at any altitude up to 86 km (ISA / USSA-1976).
Results will appear here.