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
Compute the stagnation-point heat flux at a reentry capsule's nose using the Sutton-Graves correlation q_dot_s = K sqrt(rho/R_n) V^3 in real time. Linked outputs include…
Atmospheric Reentry Simulator — Sutton-Graves Stagnation Heating
Compute the stagnation-point heat flux at a reentry capsule's nose using the Sutton-Graves correlation q_dot_s = K sqrt(rho/R_n) V^3 in real time. Linked outputs include…
Spacecraft Attitude Quaternion Rotation Simulator
Compose a spacecraft's 3D attitude from Euler angles (roll / pitch / yaw) and a rotation about an arbitrary axis, then read the resulting quaternion q=(w,x,y,z), its nor…
Keplerian Orbit Simulator — Satellite Elliptical Orbit & Velocity Calculator
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.
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 evaporation lifetime in rea…
CubeSat Deployment Spring Tip-Off Rate Simulator
Real-time spring energy, separation velocity, tip-off angular rate, CDS Rev 14 compliance and detumble time for CubeSats released from P-POD, NanoRacks NRCSD, ISIPOD or …
CubeSat Power Budget Simulator
Browser-based power budget tool for CubeSats from 1U up to 12U.
Escape Velocity Simulator
Set mass and radius to calculate escape velocity for any celestial body
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
The classic Hohmann transfer tool: real-time Δv1, Δv2, total Δv, and transfer-time outputs for LEO-to-GEO, Earth-to-Mars, Earth-to-Venus rough sizing. For arbitrary tran…
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. Vary the beam voltage, beam current, p…
Kepler Equation Simulator — Numerical Solution of Elliptic Orbits
An intermediate-to-advanced numerical simulator that solves M = E − e sin E via Newton-Raphson. Watch eccentric and true anomalies update every frame with iteration coun…
Kepler Laws Orbital Simulator
Visualize all three Kepler laws on a single orbit animation. Vary eccentricity and semi-major axis to see the ellipse shape, constant areal velocity, and T² ∝ a³ relatio…
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
Visualise the transfer orbit that connects two points around a central body.
Low-Thrust Spiral Trajectory Simulator
Design a spiral transfer matched to the "high Isp, low thrust" character of ion engines and Hall thrusters, using the Edelbaum approximation and the Tsiolkovsky rocket e…
Moon Phase Calendar Simulator — Lunar Cycle & Illumination
Change year and month to display the lunar phase calendar in real time. Calculate moon age and phase from synodic month period to show new moon, full moon, and spring ti…
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
An analysis-focused extension showing the vis-viva equation and orbital energy on Chart.js graphs. Vary eccentricity and semi-major axis to inspect v(r) profiles and ene…
Orbital Mechanics & Kepler Orbit Simulator
Entry-level tool for rocketry and satellite engineering. Manipulate the three orbital elements (a, e, i) against canonical presets. For vis-viva charts and extended anal…
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 orbital plane preces…
Polar Orbit Ground Station Pass Time Simulator
Calculate the communications pass time between a polar-orbit Earth-observation satellite and a ground antenna.
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
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
Visualize the mixing and atomization of a pintle injector — the architecture used on SpaceX Merlin and the Apollo Lunar Module Descent Engine — through TMR (Total Moment…
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 rockets imposes on the la…
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
A tool for calculating rocket engine thrust, specific impulse and delta-v.
Multi-Stage Rocket Design & Payload Fraction Calculator
Real-time ΔV and payload fraction for 1–3 stage rockets. Set Isp, structural fraction, and propellant mass to reproduce Saturn V, Falcon 9, and more. Canvas stage diagra…
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
17.7-30 GHz Ka-band links pay a heavy rain-fade penalty, but in return they unlock huge bandwidth and high-gain narrow beams.
Satellite Magnetic Torquer Attitude Control Simulator
A sizing tool for CubeSat-class (1U-12U) magnetic torquers (MTQ). Change altitude, inclination and coil specs to see the achievable magnetic moment, peak torque, time-to…
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
Compute the tiny photon pressure that the Sun exerts on a spacecraft.
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 in real time.
Star Tracker Pointing Accuracy Simulator
A design tool for the spacecraft's highest-accuracy attitude sensor — the star tracker (STR). It images stars on a CMOS/CCD, matches them against a catalog and recovers …
Static Margin & Longitudinal Stability Simulator
Design the longitudinal static stability that decides whether an aircraft can fly straight "hands-off".
Sun-Synchronous Orbit (SSO) Design Simulator
Design a Sun-synchronous orbit — the standard low-Earth orbit for Earth-observation satellites — by matching the J2-driven nodal regression to the Sun's mean motion.
Supernova Light Curve Simulator
A supernova is the final, explosive end of a star. From Type Ia to II-P, IIn and Ib/Ic, dial in the ejecta mass, Ni-56 mass, explosion energy and distance, and watch the…
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
Visualize the thrust coefficient C_F, characteristic velocity c*, specific impulse Isp and exhaust velocity V_e of a rocket nozzle. Tune chamber pressure, exit pressure,…
Tidal Forces Simulator — Roche Limit & Tidal Bulge Calculator
Visualize the tidal bulge created on Earth by differential gravity from the Moon and Sun. Adjust orbital radius and masses to compute the Roche limit, spring tides, and …
V-n Diagram (Flight Envelope) Simulator
Draw the flight envelope of an aircraft. Adjust the wing area, weight, maximum lift coefficient and limit load factors to see the stall speed, corner speed and dive spee…
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