100+ Engineering Calculators & Studies
Orbital mechanics & link budgets for aerospace. Arc flash, protection coordination, grounding, and ride-through for energy. LCOE, GADS, and NERC reliability trackers. DoDAF, JCIDS, RMF, and KPP trace for defense. Built into every Hitt Hosting SE plan — no MATLAB or ETAP license required.
Hohmann Transfer Calculator
Calculate delta-V requirements for Hohmann transfer orbits between two circular orbits. Includes transfer time, fuel mass estimates, and orbit visualization.
Learn more →Link Budget Calculator
Analyze RF communication link margins for spacecraft-to-ground and inter-satellite links. Accounts for path loss, antenna gains, atmospheric effects, and noise.
Learn more →Delta-V Budget Calculator
Build a complete delta-V budget for your mission. Sum maneuver costs, compute fuel requirements, and track margin against propulsion system capacity.
Learn more →Orbital Decay Predictor
Predict orbital lifetime for LEO spacecraft. Models atmospheric drag using ballistic coefficient, solar activity, and altitude-dependent density profiles.
Learn more →Ground Track Visualizer
Visualize spacecraft ground tracks on a 2D map projection. See coverage patterns, revisit times, and ground station access windows for any orbit.
Learn more →Radiation Environment Calculator
Estimate the radiation environment for your orbit. Compute total ionizing dose, single event upset rates, and shielding requirements for spacecraft electronics.
Learn more →Tsiolkovsky Rocket Equation Calculator
Compute propellant mass, mass ratio, and propellant fraction from the rocket equation. Solve for delta-V, dry mass, or specific impulse with any consistent units.
Learn more →Orbital Period Calculator (Kepler's Third Law)
Calculate the orbital period of any spacecraft from its semi-major axis using Kepler's third law. Supports Earth, Moon, Mars, Sun, and arbitrary central bodies.
Learn more →Escape Velocity Calculator
Compute the escape velocity from any altitude above Earth, the Moon, Mars, or any central body. Includes hyperbolic excess velocity for interplanetary departures.
Learn more →Plane Change Delta-V Calculator
Calculate the delta-V cost of an orbital plane change at any point in an orbit. Includes combined plane change and altitude change optimization.
Learn more →Sun-Synchronous Orbit Calculator
Compute the inclination required for a sun-synchronous orbit from altitude. Includes nodal regression rate, mean local time, and eccentricity effects.
Learn more →Beta Angle Calculator
Compute the beta angle (sun angle to orbit plane) for any orbit and date. Drives eclipse duration, thermal loading, and solar power profile design.
Learn more →Spacecraft Eclipse Duration Calculator
Calculate the maximum eclipse duration for any orbit and beta angle. Drives battery sizing, depth-of-discharge, and survival mode timeline.
Learn more →Free Space Path Loss Calculator (FSPL)
Compute free space path loss in dB for any frequency and range. The dominant loss term in every spacecraft RF link budget.
Learn more →Satellite Doppler Shift Calculator
Calculate doppler frequency shift for any spacecraft pass. Drives ground station receiver tracking and downlink demodulator design.
Learn more →Spacecraft Solar Array Sizing Calculator
Size a spacecraft solar array from power requirements, eclipse fraction, and end-of-life degradation. Returns required cell area and BOL/EOL power.
Learn more →Spacecraft Battery Sizing Calculator
Size a spacecraft battery from eclipse load, depth-of-discharge limit, and end-of-life capacity loss. Returns required ampere-hours and battery mass.
Learn more →C3 (Characteristic Energy) Calculator
Compute C3 launch energy for interplanetary missions. C3 is the headline number for launch vehicle performance to escape trajectories.
Learn more →These are a taste. The full suite — 100+ tools — covers aerospace (orbit mechanics, spacecraft sizing, link budgets, thermal, radiation, coverage), defense (JCIDS, APB, TEMP, RMF, CMMC, DoDAF, KPP trace, CDRL), energy (protection coordination, arc flash, grounding, ride-through, FAC-008, TPL-001, PRC-005, CIP-014, MOD-032, outage / GADS, ISO market, PPA, environmental permits, LCOE), and the shared INCOSE backbone — requirements, V&V, trade studies, baselines, and reviews.
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All engineering calculators are included in every plan. Start your pilot and run real calculations with your mission data.