Simulator Library
Space and Aerospace Simulators
Space simulators for orbits, rockets, satellites, reentry, and astrophysics.
51 simulators
Adjacent categories
Simulator list
Atmosphere Layers Simulator — Temperature & Pressure Profile
Atmosphere layers simulator. Compute pressure, temperature, density and sound speed at any altitude with the ISA model; compare troposphere to thermosphere.
Atmospheric Entry Heating Calculator
Explore Apollo, Shuttle & Starship reentry heating. Adjust velocity, angle & design to calculate peak g-load, heat flux & wall temperature in this simulator.
Atmospheric Reentry Simulator — Sutton-Graves Stagnation Heating
Atmospheric Reentry Simulator — Sutton-Graves Stagnation Heating compares how heat transfer, temperature difference, and cooling margin shifts as the main assumptions ch…
Spacecraft Attitude Quaternion Rotation Simulator
Simulate spacecraft 3D attitude with quaternions and Euler angles in real-time.
Keplerian Orbit Simulator — Satellite Elliptical Orbit & Velocity Calculator
Moved to Kepler Orbit Simulator: The ballistic orbit page has been consolidated into the Kepler orbit simulator.
Black Hole Event Horizon & Hawking Temperature Simulator
Enter a mass and Kerr spin parameter to compute the Schwarzschild radius, Kerr outer horizon r+, ISCO, photon sphere, Hawking temperature and evapora…
CubeSat Deployment Spring Tip-Off Rate Simulator
CubeSat Deployment Spring Tip-Off Rate Simulator focuses on physics-model assumptions and visualization, giving a compact read on the current case and the trend that mat…
CubeSat Power Budget Simulator
CubeSat Power Budget Simulator focuses on electromagnetic, circuit, and transmission conditions, giving a compact read on the current case and the trend that matters nex…
Escape Velocity Simulator
Escape Velocity Simulator focuses on physics-model assumptions and visualization, giving a compact read on the current case and the trend that matters next.
Gravity Well Simulator — 2D Spacetime Curvature & Orbital Mechanics
Explore gravity's effects with this interactive simulator. Visualize orbits, warp spacetime, and build intuition for physics concepts like general relativity.
Hohmann Transfer Simulator — Minimum-Energy Orbital Transfer
Hohmann Transfer Simulator — Minimum-Energy Orbital Transfer compares how physics-model assumptions and visualization shifts as the main assumptions change.
Hubble's Law Simulator — Recessional Velocity & Universe Expansion
Interactively visualize Hubble's law v=H₀d. Explore the Hubble constant, galaxy distance, redshift, age of the universe, and expanding universe visualization.
Ion Thruster (Electric Propulsion) Isp & Thrust Simulator
Size a gridded electrostatic ion thruster: see exit velocity, specific impulse Isp, thrust and thrust-to-power ratio in real time.
Kepler Equation Simulator — Numerical Solution of Elliptic Orbits
Kepler's Equation Solver using Newton-Raphson iteration.
Kepler Laws Orbital Simulator
Kepler Laws Orbital Simulator compares how physics-model assumptions and visualization shifts as the main assumptions change.
Kepler's Laws Orbit Simulator — Planetary Motion & Gravity
Simulate planetary orbits with Kepler's Laws. Adjust parameters to visualize elliptical motion, the equal-area law, and verify the harmonic law in real time.
Lambert's Problem & Transfer Orbit Simulator
Lambert's Problem & Transfer Orbit Simulator compares how physics-model assumptions and visualization shifts as the main assumptions change.
Low-Thrust Spiral Trajectory Simulator
Low-Thrust Spiral Trajectory Simulator compares how physics-model assumptions and visualization shifts as the main assumptions change.
Moon Phase Calendar Simulator — Lunar Cycle & Illumination
Moon Phase Calendar Simulator: Change year and month to display the lunar phase calendar in real time.
N-Body Gravitational Simulator — Orbital Dance, Collisions & Figure-8
Simulate gravitational orbits, collisions, and mergers in real time. Explore solar systems, binary stars, and the figure-8 solution with this N-body physics simulator.
Orbital Mechanics Simulator — Kepler Orbits & Hohmann Transfer
Orbital Mechanics Simulator — Kepler Orbits & Hohmann Transfer focuses on physics-model assumptions and visualization, giving a compact read on the current case and the …
Orbital Mechanics & Kepler Orbit Simulator
Orbital Mechanics & Kepler Orbit Simulator compares how physics-model assumptions and visualization shifts as the main assumptions change.
J2 Orbital Perturbation Simulator
The Earth is not a perfect sphere — the equator bulges by about 21 km, and that flattening (the J2 zonal coefficient, 1.08×10⁻³) makes a satellite's…
Polar Orbit Ground Station Pass Time Simulator
Polar Orbit Ground Station Pass Time Simulator: Calculate the communications pass time between a polar-orbit Earth-observation satellite and a ground…
Projectile & Orbit Simulator — Kepler Orbits to Escape Velocity
Simulate projectile trajectories and orbital mechanics. Adjust velocity to see transitions from suborbital to circular, elliptical, and hyperbolic escape paths.
Clohessy-Wiltshire Rendezvous Simulator
Clohessy-Wiltshire Rendezvous Simulator: Design the approach trajectory of a chaser spacecraft to a target satellite for rendezvous and docking.
Rocket Equation Calculator — Tsiolkovsky Multi-Stage Delta-v
Calculate rocket delta-v for up to 3 stages. Configure mass, Isp, and add gravity or drag losses with this Tsiolkovsky equation tool.
Rocket Pintle Injector Mixing & Atomization Simulator
Rocket Pintle Injector Mixing & Atomization Simulator compares how environmental or chemical-process balance and operating margin shifts as the main assumptions change.
Rocket Plume Launch Pad Impingement Simulator
Visualize the heat flux, sound pressure level (SPL), and water-deluge cooling that the exhaust plume of Falcon 9, Starship, SLS and other major rocke…
Rocket Propulsion Simulator — Tsiolkovsky Equation & Specific Impulse
Simulate rocket engine performance. Apply the Tsiolkovsky equation, calculate thrust & Δv. Compare LH2/LOX, kerosene, solid, and storable propellants.
Rocket Specific Impulse Simulator
Rocket Specific Impulse Simulator compares how physics-model assumptions and visualization shifts as the main assumptions change.
Multi-Stage Rocket Design & Payload Fraction Calculator
Real-time ΔV and payload fraction for 1–3 stage rockets via the Tsiolkovsky equation.
Rocket Thrust Simulator — Tsiolkovsky Rocket Equation & Delta-v
Calculate rocket thrust, exhaust velocity, and delta-v using the Tsiolkovsky rocket equation. Adjust mass ratio, specific impulse, and burn time for rocket stage design.
Ka-Band Satellite Communication Link Budget Simulator
Ka-Band Satellite Communication Link Budget Simulator focuses on physics-model assumptions and visualization, giving a compact read on the current case and the trend tha…
Satellite Magnetic Torquer Attitude Control Simulator
Satellite Magnetic Torquer Attitude Control Simulator: A sizing tool for CubeSat-class (1U-12U) magnetic torquers (MTQ).
Satellite Orbit Simulator — LEO/GEO Period, Velocity & Ground Track
Visualize satellite orbits in real time. Adjust altitude, inclination, and RAAN. Calculate period, velocity, and coverage.
Satellite Power Budget Calculator
Calculate satellite power budgets in real time. Supports LEO, MEO, GEO orbits. Compute solar array size, battery capacity, eclipse duration, DoD, and EOL power.
Satellite Thermal Control Calculator
Calculate spacecraft thermal balance with solar flux, Earth IR, albedo & internal power. Compute equilibrium temperatures and radiator sizing for sunlit/eclipse phases.
Gravity Slingshot (Gravity Assist) Orbital Mechanics Simulator
Simulate gravity assist maneuvers in real-time. Adjust planet mass, velocity, and angle to see orbital changes powered by accurate physics and RK4 integration.
Solar Radiation Pressure (SRP) Spacecraft Simulator
Solar Radiation Pressure (SRP) Spacecraft Simulator focuses on heat transfer, temperature difference, and cooling margin, giving a compact read on the current case and t…
Solar System Scale Simulator — Planetary Distances & Size Comparison
Visualize the true scale of the solar system with adjustable zoom. Compare planetary sizes and orbital radii for astronomy education and space science outreach.
Solar System Simulator — Planetary Orbits & Kepler's Laws
Explore a real-time solar system simulator visualizing planetary orbits and demonstrating Kepler's Laws of planetary motion.
International Standard Atmosphere Simulator
Change the altitude and see the temperature, pressure, air density and speed of sound from the International Standard Atmosphere (ISA) model update i…
Star Tracker Pointing Accuracy Simulator
Simulate star tracker pointing accuracy for spacecraft attitude determination.
Static Margin & Longitudinal Stability Simulator
Static Margin & Longitudinal Stability Simulator focuses on physics-model assumptions and visualization, giving a compact read on the current case and the trend that mat…
Sun-Synchronous Orbit (SSO) Design Simulator
Sun-Synchronous Orbit (SSO) Design Simulator focuses on physics-model assumptions and visualization, giving a compact read on the current case and the trend that matters…
Supernova Light Curve Simulator
Supernova Light Curve Simulator: A supernova is the final, explosive end of a star.
Three-Body Problem Simulator
Visualize the three-body problem in real-time. Explore gravitational interactions, periodic orbits, and conserved quantities like energy and angular momentum.
Thrust Coefficient Simulator — Rocket Nozzle C_F and Specific Impulse
Thrust Coefficient Simulator for rocket nozzles: visualize C_F, Isp, and exhaust velocity.
Tidal Forces Simulator — Roche Limit & Tidal Bulge Calculator
Tidal Forces Simulator — Roche Limit & Tidal Bulge Calculator compares how physics-model assumptions and visualization shifts as the main assumptions change.
V-n Diagram (Flight Envelope) Simulator
V-n Diagram (Flight Envelope) Simulator focuses on nearby design assumptions and key metrics, giving a compact read on the current case and the trend that matters next.
How to Use
- Select mission profile: LEO insertion, GEO transfer, or lunar trajectory using cat-filter dropdown
- Input vehicle parameters: dry mass (kg), propellant load (tonnes), specific impulse (Isp in seconds), and thrust vector (kN)
- Define orbital mechanics: apogee/perigee altitude (km), inclination (degrees), and delta-v budget (m/s)
- Run simulation to compute transfer time, fuel consumption, and staging requirements
- Review trajectory plots, reentry corridor, and g-load profiles during powered flight
Worked Example
GEO transfer mission: Falcon 9 second stage delivers 4,850 kg payload from LEO (200 km altitude) to GEO (35,786 km). Isp = 348 s (RL-10 engine equivalent), initial delta-v requirement = 3,880 m/s. Simulation shows: apogee burn delta-v = 1,640 m/s consuming 2,240 kg propellant, circularization burn = 180 m/s, total flight time to apogee = 5.2 hours, final GEO deployment velocity = 3,075 m/s. Max structural loads during trans-lunar injection exceed 4.8 g.
Practical Notes
- Verify staging logic: calculate burnout velocity at each stage separation to confirm circularization capability for GEO missions
- Account for atmospheric drag during initial ascent (first 100 km): density model effects reduce effective delta-v by 50-120 m/s depending on launch azimuth
- Monitor propellant slosh in microgravity coasting phases; use baffle modeling if ullage pressure falls below 0.8 bar
- Reentry vehicles: input ballistic coefficient (beta = mass/Cd*A) and heat shield material to predict thermal loads above 11 km/s entry velocity
- Cross-check results against published mission data (e.g., GSLV Mk-III GEO-4.2 t payload) to validate numerical integration accuracy