HawkLogic Systems

HawkLogic Systems

Spacecraft engineering, computed.

Gravity's had a good run.

Twenty free mission calculators and ENKI — an AI design studio that sizes an entire CubeSat with you. From first sketch to flight software.

Design with ENKI Explore the tools

Free spacecraft calculators

Run the numbers, right in the browser

Twenty pure-physics calculators for the mission-design questions satellite teams keep asking — power, links, Δv, drag, radiation, compliance. Cited constants, no backend, free. Each one can explain its own output in plain English with a built-in AI explainer.

See all 20 tools

AI design studio

Meet ENKI — design a whole mission by talking to it

ENKI is an AI spacecraft-design studio. Describe a CubeSat and it sizes the mission with you — running the calculators, tracking a live design state, sketching the bus in 3D, and explaining every number. It’s the fastest path from a rough idea to a sized, sanity-checked design.

Design with ENKI Free to start · no card

  • Conversational design

    Describe a mission in plain language; ENKI designs it with you, turn by turn.

  • Runs the real tools

    It calls HawkLogic’s calculators as tools — the same physics the free tools run.

  • Live design state

    Every parameter and calculation collects in a running mission-design state.

  • Sees in 3D + charts

    Sketches the spacecraft bus in 3D and answers with diagrams, charts, and math.

  • Checks itself

    Auto-runs a constraints check each turn and flags violated margins and inconsistencies.

  • Picks up where you left off

    Sign in and your design threads persist — resume a mission any time.

Products

Flight-ready when you are

Past the sizing tools, we build the production software that flies the mission. Start with ICARUS OS — more products are on the way.

Philosophy

How we think

Determinism

Flight software can't be statistical. Every cycle accounted for, every deadline met, every command dispatched on time. ITCM-resident hot paths and a hard real-time scheduler under the hood.

Safety

Hardware-level fault isolation across the whole stack. Per-task MPU regions, 5-level fault escalation, hardware CRC monitoring, SEU-tested, MISRA-C on the roadmap. Evidence, not promises.

Long-term

A mission is a long-term commitment, not a launch event. Ground-loadable configuration. State that survives resets. Built to keep flying reliably through contact gaps and the whole operational life.

Latest from the Avionics Desk

Field notes from the flight software bench.

All posts
A satellite pass arc over a ground station's sky dome — rising at AOS, culminating near 72 degrees elevation, and setting at LOS — computed from a TLE with SGP4.
7 min

When is my satellite overhead? TLEs, SGP4, and pass prediction

How a Two-Line Element set and the SGP4 propagator become ground-station pass windows — AOS, LOS, elevation masks, max elevation — and why TLE freshness is the whole accuracy story.

A decaying spiral orbit reentering above Earth's limb, with an altitude-versus-time inset showing the orbit decaying within the FCC five-year post-mission disposal limit.
8 min

The FCC 5-year rule: will your CubeSat come down in time?

Orbital decay physics, ballistic coefficient, solar-cycle sensitivity, the FCC 5-year post-mission disposal rule, ESA Zero Debris, and remediation options.

A Hohmann transfer ellipse tangent to an inner and outer circular orbit, showing the perigee burn and apogee burn plus a plane-change angle — the pieces of a delta-v budget.
6 min

The delta-v budget: Hohmann transfers and the plane-change formula

The plane-change delta-v formula, delta-v = 2 v sin(delta-i/2), derived — with two-burn Hohmann delta-v from vis-viva, combined maneuvers, and propellant mass via Tsiolkovsky. Worked 400 to 700 km example.

Let's talk.

Whether you're building something that needs to fly, or something that needs to scale.

Or email us directly at founders@hawklogicsystems.com