INTEGRATED RESEARCH ON LOW-FREQUENCY ACOUSTIC AND ELECTROMAGNETIC
FIELDS IN THE ISS HABITATION COMPARTMENTS (INFRAZVUK-M)
Research Area: Life Support Systems and Habitation
Expedition(s): 2, 13 and 15
Investigator(s): ● Mikhail Y. Belyaev, PhD, S.P. Korolev Rocket and Space
Corporation Energia, Korolev, Russia
RESEARCH OBJECTIVES
The Integrated Research on Low-Frequency Acoustic and Electromagnetic Fields
in the ISS Habitation Compartments (Infrazvuk-M) investigation develops and tests the tools
and methods of creating a real-time system for monitoring the spatial-temporal structure and
energy spectral parameters of low-frequency physical background fields in the International
Space Station (ISS) Service Module (SM) habitation compartments.
SPACE BENEFITS
Based on Infrazvuk-M results, recommendations were provided to introduce improved systems,
as part of the nominal acoustic noise control system, into the ISS RS modules, for crew
protection from the adverse effects of exposure to the interior physical environment, including
the acoustic noise in the ISS RS module habitation compartments.
RESULTS
The measurements showed that the noise
generated by the new fan as installed in the
SM ventilation system was significantly lower
than that of the nominal fan. The reduction in
overall noise level, measured at a distance of
50 cm from the fan with the interior panel
open, was 2.8 dB.The noise reduction values as obtained have
demonstrated a satisfactory noise-reduction
effect through the use of the low-noise fan,
which had previously been identified during
the ground-based tests.This investigation is complete and all results are published.
Onboard Noise Analyzer. Roscosmos image.