Orbitalis

Orbitalis is an engineering tool for calculating rocket velocity increment (delta-v) using the Tsiolkovsky rocket equation.

CALCULATOR
Enter your rocket's dry mass (without fuel), initial mass (with fuel), and engine exhaust velocity to instantly compute the achievable delta-v. The app also displays mass ratio, fuel mass, and fuel fraction for complete analysis.

PROPELLANT REFERENCE
Browse a comprehensive database of rocket propellants organized by category:
• Chemical propellants (LOX/LH2, LOX/RP-1, Methalox, Hypergolic, Solid)
• Electric propulsion (Hall effect, Ion thrusters, VASIMR)
• Nuclear thermal concepts
• Advanced propulsion systems
Each entry includes exhaust velocity, specific impulse (Isp), and real-world engine examples. Tap any propellant to auto-fill the calculator.

MISSION PROFILES
Explore reference delta-v values for real space missions:
• Orbital: LEO, GEO, SSO transfers
• Lunar: Trans-lunar injection, landing, ascent
• Interplanetary: Mars, Venus, Jupiter, Saturn transfers
• Deep space: Solar escape, asteroid rendezvous, Kuiper Belt
Use any mission preset to instantly populate the calculator with appropriate parameters.

FEATURES
• Offline calculation — no internet required for core functionality
• Earth orbit launch example pre-loaded for quick reference