Long-term vision · In development

Photon
high-altitude pseudo-satellite

A solar-powered aircraft designed to stay in the stratosphere for weeks at a time — persistent Earth observation and communications, closer than any satellite, longer than any aircraft.

18–20 km
Operating altitude
10–15 m
Wingspan
2–3 kg
Payload capacity
Photon HAPS render

Satellite persistence, aircraft flexibility

Photon is built to loiter above a target area for days or even weeks — a flexible, cost-effective alternative to satellites for remote sensing, atmospheric research, disaster monitoring and secure communications.

Satellites

Global coverage, but brief overpasses and high cost per revisit.

Photon

Holds station for weeks — closer than orbit, longer than any aircraft.

Aircraft

Fast to task, but endurance measured in hours, not days.

Aurora technology demonstrator in flight Aurora technology demonstrator
18–20 km

Operating altitude

Solar-powered loiter for weeks at a time in the stratosphere.

10–15 m

Tactical-sized

Launchable rapidly, without heavy infrastructure.

2–3 kg

Modular payload

Bay sized for sensing and communications packages.

Built for persistent coverage

From Earth observation to resilient links — Photon is meant to hold station over one area for as long as the mission needs.

Nadir Earth-observation imagery from altitude

Earth observation

Mapping, surveying and environmental monitoring with persistent coverage.

View of Earth and atmosphere from the stratosphere

Atmospheric research

Climate and atmospheric science with a long dwell over the region of interest.

Wildfire and smoke plume seen from high altitude

Disaster response

Eyes over an area for as long as it takes — fire, flood or recovery.

Ground tracking antennas under open sky

ISR

Intelligence, surveillance and reconnaissance with persistent dwell.

Flight electronics and communications hardware

Resilient comms

Independent links when ground infrastructure is remote or denied.

Together with the Straton Glider, our communications network and embedded systems, Photon closes a self-sufficient stratospheric stack — civil and defence missions on the same foundation.

Proven in the air, aiming for the stratosphere

The Aurora technology demonstrator — a 5.6 m wingspan solar aircraft built for low-altitude test flights — is proving the energy-management approach behind Photon before we scale to 18–20 km.

  • Energy & control — energy balance and long-endurance flight control validated in real flight
  • 25 h 18 m uninterrupted flight around summer solstice — Slovak record for longest continuous flight
  • Next — scale the same architecture toward stratospheric Photon operations

The same solar heritage feeds Phoenix — our long-endurance reconnaissance UAV programme.

Explore Phoenix
Aurora technology demonstrator

Aurora in the sky

First flights of the Aurora technology demonstrator — low-altitude validation for the energy and control stack behind Photon.

Strategic partners & early investors wanted

We're looking for partners in both civil and defense sectors to help bring our full stratospheric ecosystem vision to life — data collection, surveillance, or experimental payload testing.

Get in touch