MADE IN POLAND2026 / STELA 1

INTRODUCING OUR LIQUID-PROPELLANT ROCKET

STELA 1

An experimental launch vehicle.
Designed, built and tested by ReSAT.

Discover the programme Watch the project film

CANSAT / CAMPAIGNSReSAT / POLAND

Planning a
CanSat campaign?

CANSAT / TECHNICAL COLLABORATION

We welcome conversations with organisers, teams and technical partners about mission planning, integration and future launch campaigns.

resat.team@gmail.com STELA 1 remains under development. Future campaigns depend on successful vehicle validation.

01 / THE BACKGROUNDReSAT / POLAND

From CanSat
to launch vehicle
development.

ReSAT began with a CanSat mission. Today, we are developing STELA 1 — an experimental liquid-propellant rocket and the systems required to operate it.

The programme connects propulsion, structures, avionics, ground equipment and flight recovery. We design and manufacture the hardware, test individual subsystems and bring them together on the test stand.

See the vehicle

1stCanSat Poland 2025

N₂O / EtOHSTELA 1 propulsion system

2026Ground-test programme

01Design

02Manufacture

03Ground test

04Improve

02 / THE VEHICLE

STELA 1
One integrated
system.

A pressure-fed propulsion system using nitrous oxide and ethanol, custom avionics, an aluminium piston tank and a two-stage recovery architecture.

The rocket is still in development. Ground testing is being used to validate the design before flight.

PROPULSIONN₂O + ethanol

FEED SYSTEMPressure-fed / piston tank

RECOVERYDrogue and main parachutes

STELA 1 concept rendering — STELA 1 / DESIGN RENDER

03 / ENGINEERINGFROM DRAWING TO HARDWARE

Inside
the vehicle.

Each major subsystem is designed, assembled and validated as part of the same programme.

01 / PROPULSION

The engine

An in-house liquid-propellant engine featuring a three-level injector, combustion chamber and nozzle. Injector flow was checked experimentally before the integrated hot-fire campaign.

INJECTOR / COMBUSTION / TEST STAND

02 / PROPELLANT FEED

The piston tank

A custom aluminium pressure vessel carries separate oxidiser and fuel chambers. An internal moving piston separates the propellants while coupling their supply pressures.

STRUCTURAL ANALYSIS / HYDROSTATIC TESTING

03 / FLIGHT ELECTRONICS

The avionics

Custom-developed electronics control test sequences and capture pressure, temperature, thrust, GPS and piston-position measurements, with onboard data logging and radio telemetry.

PCB DESIGN / SENSORS / TELEMETRY

04 / TEST CAMPAIGN2026 / STELA 1

The ground-test
campaign.

The ground-test campaign turns engineering assumptions into measured results. Each firing helps identify what works, what needs attention and what must change before flight.

RECENT TEST / FIELD FOOTAGE

An engine test, seen from the air.

Drone footage from a subsequent hot-fire test. The video shows real ground testing; it is not footage of a rocket launch.

See the full project film

DRONE CAMERA / ENGINE GROUND TEST

TEST LOGRESULTS FROM THE ReSAT 2026 TEST REPORT

HF / 01

First integrated test

Propellant transfer and the piston worked as intended. Failure of the igniter prevented combustion in the main chamber.

VERIFIEDPropellant transfer & piston

HF / 02

Ignition achieved

Combustion occurred, but thrust was intermittent. The team identified restricted flow through the solenoid valves as the main suspected limitation and changed the valve design.

NEXT ITERATIONMain valve redesign

HF / 04

Further ground testing

Later footage documents continued testing of the propulsion system. Performance numbers for this test are not presented without verified measurements.

CONTINUED WORKIntegrated ground testing

05 / MEASUREMENT & CONTROLBUILT AROUND REAL DATA

Every test
produces data.

Measurements from the tank, electronics and test stand make the next design decision possible. The same electronics architecture supports both ground testing and the planned onboard system.

12Hall sensors measuring piston position

400 mcontinuous radio communication demonstrated in a ground test

2.2 kmindividual packets received in a challenging ground test*

*Not a verified in-flight telemetry range.

Custom PCB rendering — IN-HOUSE AVIONICS / PCB RENDER

06 / IN THE FIELDACTUAL PHOTOGRAPHS FROM THE PROGRAMME

From the workshop
to the test site.

ReSAT CanSat with its bright green recovery device — CANSAT / FLIGHT HARDWARE

ReSAT CanSat displayed at a competition event — SECONDARY MISSION / ROTAFOIL

ReSAT testing site at sunset — END OF A TEST DAY

07 / RESATTHE TEAM AND ITS BACKGROUND

CANSAT POLAND / 2025

It started
with CanSat.

ReSAT won first place in the Polish CanSat competition in 2025. That project gave us hands-on experience with small scientific payloads, testing, integration and flight operations.

STELA 1 is a separate, ongoing development programme. Our long-term work brings together the perspective of a payload team and the engineering required to develop launch infrastructure.

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