Concept and feasibility studies
Early-phase analysis to assess whether a mission concept works, and what it takes to make it work.
Mission Analysis & Constellation Design
Get the mission right before it flies.
Good operations start with good design. From the earliest concept, we turn mission objectives into orbits, trajectories and constellation architectures that are feasible, robust and efficient to operate.
01Mission analysis
From the first concept to the operations plan: we check that the mission works, design how it flies and size what it will need along the way.
Trajectory design and optimisation
Trajectories that balance safety, propellant consumption and mission objectives, from Earth orbit to the Moon and deep space.
Operational concept and budgets
Manoeuvre strategies, propellant budgets and event analysis (eclipses, visibility, conjunctions) that feed directly into your operations planning.
02Constellation design
Designing a constellation means planning the whole lifecycle at once: how each satellite reaches its slot, how it stays there, and what that costs in propellant over the years.
Orbit architecture
Selection of altitudes, inclinations, orbital planes and phasing to meet your coverage and mission requirements.
Deployment strategy
A plan to bring each satellite from its injection orbit to its operational slot, trading off deployment time against propellant.
Slot allocation and spacing
Slot allocation and orbital spacing strategies that keep the constellation geometry under control as it grows.
Maintenance strategy
Station keeping, ground-track repeatability, phasing and LTAN stability, designed from day one, with realistic propellant budgets for the whole mission lifetime.
The same models then fly your constellation: maintenance can run through our operational navigation service or in-house with NEMO.
Operational Navigation
We navigate your spacecraft, so your team can fly the mission.
Once in flight, our engineers run flight dynamics operations on your behalf, with a validated operational pipeline, a dedicated Navigation Room and our own NEMO software suite.
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Precise orbit determination
Routine and high-precision orbit determination in LEO, GEO and deep-space regimes, using the full range of tracking data.
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Manoeuvre optimisation and collision avoidance
Manoeuvre planning and optimisation, continuous conjunction assessment and collision avoidance support.
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Real-time navigation operations
Operational support during routine phases and critical events, run from our dedicated Navigation Room.
01Two ways to work with us
Prime support
Nautilus is your flight dynamics team: we run navigation operations and deliver the products your mission needs.
Shadow support
We run an independent, parallel flight dynamics solution to cross-check your primary team or provider, adding confidence during critical phases.
02Proven in flight, from Earth orbit to deep space.
Our team has supported institutional and commercial missions, and brings the same operational experience to every customer. Behind the service there's a team of flight dynamics specialists, most of them with a PhD.
Earth orbit
From LEO to GEO, single satellites and constellations.
Cislunar and lunar
Transfers to the Moon and operations in lunar orbit.
Asteroids and small bodies
Navigation for missions to asteroids and other small bodies.
Deep space
Interplanetary cruise and the other bodies of the Solar System.
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Discover NEMO
Every analysis and every operation runs on NEMO, our flight dynamics software suite. Want to do it in-house instead? You can license NEMO for your own team.
Planning a mission or looking for operational support?
Let's talk about what you need.