Space tests

With the ILR-33 BURSZTYN 2K rocket, a cost-effective, scalable and environmentally friendly design, we have the ability to efficiently experiment in microgravity and probe the atmosphere. The ILR-33 BURSZTYN 2K rocket is used during flight as a suborbital test platform, capable of providing up to 150 seconds of microgravity conditions for a 10 kg payload. The payload compartment can be adapted to the Customer’s requirements, providing the best possible test conditions.

Technical parameters of the ILR-33 BURSZTYN 2K rocket


4.6 m

Main stage diameter

230 mm

Flight ceiling

100 km

Maximum speed

1300 m/s

Payload weight

10 kg

Maximum gravity load

14 g

Duration of microgravity (10-3 g, 5 kg)

150 s


Auxiliary engines


Solid propellant

Maximum thrust

2 x 16 000 N

Working time

6 s

Combustion chamber

Composite structure


Main engine


Hybrid rocket engine


Hydrogen peroxide (H2O2), concentration 98%+



Maximum thrust

4,000 N

Working time

40 s

Combustion chamber

Composite structure


Microgravity is a state of space in which gravitational acceleration is significantly reduced or completely eliminated, while the gravitational force itself still exists – a so-called state of weightlessness is created.

One method of creating a microgravity environment is suborbital flight aboard a rocket. The rocket, being at a significant altitude, which is not affected by aerodynamic forces and has its propulsion system turned off, experiences free fall, as a result of which the rocket’s payload is subjected to microgravity.

Microgravity aboard suborbital rockets can be used to precisely measure the thermophysical properties of liquid metals or to study the response of living organisms to gravitational stimuli.