Flagship R&D · 8 test flights

Straton Glider
stratospheric return system

A fully autonomous glider that detaches at altitude and flies your payload back to the launch point — making meteorological probes and stratospheric experiments reusable instead of disposable.

Straton Glider on the grass after recovery
32 km
Operational altitude
8
Test flights
<250 g
All-up weight

Every day, radiosondes fall from the sky — and stay there

Weather services worldwide launch meteorological probes daily, and nearly all of them are lost where they land. The Straton Glider brings them home — same-day reuse, lower cost per sounding, less litter in the landscape.

Autonomous

Returns from over 30 km with no human input — to the launch point or a chosen landing zone.

Reusable

Lower cost, faster turnaround and less waste, flight after flight.

Regulation-friendly

Stays under 250 g all-up weight, easing flight permissions across jurisdictions.

Safe recovery

Parachute at low altitude for a soft landing in tight areas.

Recovered high-altitude payload after landing One-way is the default

Balloon up. Glide home

Five steps from launch to the next flight — the loop that turns a disposable sounding into a reusable system.

  1. 01

    Launch

    Rises under a balloon with the payload aboard.

  2. 02

    Detach

    Releases at operational altitude when the mission calls for it.

  3. 03

    Glide

    Autonomous navigation back toward the launch point.

  4. 04

    Touchdown

    Parachute deploys for a soft landing in a tight zone.

  5. 05

    Refly

    Refurbish, reattach, and fly again the same day when possible.

Proven in flight, now scaling up

The first prototype flew 8 missions in its first year, proving reliability and precision in real-world conditions — including a fully autonomous return from 32 km altitude.

Development now focuses on the next generation:

  • Custom flight controller — purpose-built avionics for stratospheric descent and autonomous navigation
  • Custom airframe — a purpose-designed structure replacing the first prototype's platform
  • Scalability — the design is ready to scale for larger experiments
  • Meteorological sounding & atmospheric research
  • Environmental and biological sample return
  • Academic and student-led high-altitude experiments
Onboard view from a Straton Glider test flight Test flight · onboard

From the glider’s point of view

Onboard footage from a Straton Glider test flight — autonomous return after release from altitude.

Test the Straton Glider in real operations

We are looking for early adopters and partners interested in testing the Straton Glider in real-world operational scenarios — especially meteorological services and research institutions.

Become an early adopter