Spacecraft Systems Simulators

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…

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 …

Browser-based power budget tool for CubeSats from 1U up to 12U.

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.

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…

Calculate satellite power budgets in real time. Supports LEO, MEO, GEO orbits. Compute solar array size, battery capacity, eclipse duration, DoD, and EOL power.

Calculate spacecraft thermal balance with solar flux, Earth IR, albedo & internal power. Compute equilibrium temperatures and radiator sizing for sunlit/eclipse phases.

Compute the tiny photon pressure that the Sun exerts on a spacecraft.

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 …