[Testing of the gas vortex culture stirrer under conditions of short-term microgravity].

Functional testing of the bioreactor for stirring culture in microgravity was performed during the microgravity episodes aboard research airplane Il-76 following the Kepler parabolic flight path. The attempt to produce the gas vortex stirring effect in a given liquid volume was a failure. Nonetheless, the stirrer ventilator is capable to agitate liquid acting as a mechanical stirrer.