The Launch Problem Is Solved. The Transfer Problem Is Not.
Over the past decade, the cost of reaching low Earth orbit (LEO) has fallen by more than 90%. SpaceX, Rocket Lab, and a growing constellation of new launch providers have fundamentally changed the economics of getting to space. But getting to LEO is only the first step. The real challenge — moving cargo reliably between orbital planes, altitudes, and destinations — remains largely unsolved.
Consider the typical mission architecture today. A commercial payload launches to a standard LEO insertion orbit, then relies on either its own propulsion system or a costly dedicated transfer vehicle to reach its final operational orbit. For small satellites with limited onboard propellant, this means accepting significant performance degradation or carrying fuel mass that crowds out payload capacity. For larger constellations, it means complex, multi-year orbital drift maneuvers that consume operational lifetime before the satellite even begins its primary mission.
The space economy in 2025 is roughly analogous to maritime trade in the early 19th century: we have ships that can cross oceans, but no reliable port infrastructure, no standardised transfer vessels, and no efficient hub-and-spoke logistics network. The cargo arrives at the water's edge — and then must figure out the last mile on its own.
What Orbital Logistics Actually Means
The term "orbital logistics" covers a broad range of capabilities, but the core problem is straightforward: moving mass from one orbit to another efficiently, predictably, and at commercial scale. This includes transfers between LEO altitudes (say, 400 km to 600 km), plane changes that align orbital inclinations, transfers from LEO to medium Earth orbit (MEO) or geostationary Earth orbit (GEO), and eventually, cislunar logistics supporting Lunar Gateway and Moon surface operations.
Each of these transfer types requires propulsion — chemical, electric, or hybrid — and each involves a fundamental trade-off between time and fuel efficiency. Chemical propulsion (high thrust) executes transfers quickly but burns through propellant at high rates. Electric propulsion (low thrust, high specific impulse) is fuel-efficient but slow, taking weeks or months to complete a transfer. The optimal solution depends heavily on mission timing requirements, payload sensitivity to radiation exposure in transfer orbits, and cost constraints.
PAVE Space's approach focuses specifically on the medium-term transfer problem: missions that need to complete in days rather than months, but cannot afford the propellant mass of pure chemical systems. Our hybrid propulsion architecture combines a high-impulse chemical burn for orbit raising with continuous low-thrust electric propulsion for fine-tuning and circularisation, achieving transfer times 60-70% shorter than pure electric systems at 35-40% lower propellant mass than pure chemical approaches.
The Market That Is About to Exist
The addressable market for orbital transfer services is growing faster than most analysts predicted even three years ago. Driving forces include the proliferation of small satellite constellations requiring precise orbital slot management, the emergence of on-orbit servicing and assembly (OSAM) missions that need to rendezvous with multiple spacecraft, growing demand for LEO-to-GEO cargo delivery as geostationary operators seek to replenish aging assets, and early-stage lunar economy development requiring cislunar transport.
SpaceX's Transporter rideshare missions have demonstrated massive pent-up demand for affordable access to non-standard orbits. But rideshare gets you to a fixed orbit on a fixed schedule — it does not solve the transfer problem. What operators actually need is an on-demand transfer service: book a slot, specify your destination orbit, and have your payload delivered within a defined window at a competitive per-kilogram rate.
Industry estimates from Novaspace and BryceTech suggest the in-space transportation market will exceed $12 billion annually by 2030, up from under $2 billion today. The growth is almost entirely driven by the transfer segment — ground-to-LEO launch is already commoditised. The differentiated value, and the margin, sits in everything that happens after the fairing opens.
Infrastructure Gaps That Must Be Filled
Building a functioning orbital logistics network requires more than propulsion technology. It requires standardised interfaces so transfer vehicles can mate with diverse payloads, on-orbit refuelling infrastructure to extend the operational range of transfer vehicles, predictive traffic management to avoid conjunction risks in increasingly crowded orbital regimes, and regulatory frameworks that treat orbital transfer as a commercial service rather than a government procurement.
On the interface standardisation front, progress is slow but visible. The OSAM-1 mission has demonstrated robotic capture and servicing of legacy spacecraft. DARPA's RSGS program is developing a commercial servicing vehicle with standard docking interfaces. The European Space Agency's ClearSpace-1 debris removal mission, scheduled for 2026, will validate capture mechanisms that could serve double duty as cargo transfer hardware.
Refuelling is more contentious. Several startups — Orbit Fab, Atomos Space, and others — are building propellant depot concepts, but the chicken-and-egg problem is real: transfer vehicles will not commit to a specific propellant without depot availability, and depots will not invest without committed transfer vehicle customers. The most likely resolution is vertical integration in early markets, with companies like PAVE Space developing both the transfer vehicle and the propellant supply chain, then opening the infrastructure to third parties as volume grows.
PAVE Space's Position in the Emerging Ecosystem
We founded PAVE Space with a clear thesis: the orbital logistics market will segment rapidly over the next five years, and the companies that establish operational credibility early will capture disproportionate market share as the infrastructure matures. Our initial focus on the LEO-to-MEO transfer segment reflects both the near-term demand profile and our propulsion system's performance envelope.
Our first demonstration mission, scheduled for Q3 2026, will execute a transfer from a 550 km LEO insertion orbit to a 1,200 km operational orbit for a commercial Earth observation customer. The mission will validate our hybrid propulsion system under real operational conditions and generate the performance data that underpins our commercial service launch in 2027.
Beyond the initial service, we are actively designing the modular architecture that will allow PAVE Space transfer vehicles to scale from small satellite (100-300 kg) to medium satellite (300-1,500 kg) payloads, and to extend range progressively toward GEO and cislunar destinations as our propellant technology matures. The missing link in orbital logistics will not remain missing for long.