Identification of Sources of Disturbances During Disruption of Microgravity on the International Space Station (Identifikatsia (Identification)) - 06.06.18

Overview | Description | Applications | Operations | Results | Publications | Imagery

ISS Science for Everyone

Science Objectives for Everyone
Identification of Sources of Disturbances During Disruption of Microgravity on the International Space Station (Identifikatsiya) measures accelerations and microaccelerations performed during dynamic operations: docking, undocking, orbital reboost, and other operations during which the International Space Station (ISS) structures are exposed to force loads. Telemetry analysis is used to determine dynamic characteristics and update the mathematical model of the ISS, taking into account changes to its configuration.
Science Results for Everyone
The station rocks – and wobbles. Dynamic operations such as docking and extravehicular activity place varying loads on the space station. This investigation used an onboard accelerometer to compile data on the forces, external load, and accelerations that different activities cause. The data made it possible to determine characteristics for various configurations of the station and to develop algorithms to identify sources of disturbances and other loads. This will allow mathematical recreation of situations based on onboard sensors. During dynamic operations, the level of loading on the structures of modules did not exceed design values.

The following content was provided by Anatoli Ivanovich Likhoded, Ph.D., and is maintained in a database by the ISS Program Science Office.
Experiment Details

OpNom:

Principal Investigator(s)
Anatoli Ivanovich Likhoded, Ph.D., Central Research Institute of Machine Building (TSNIIMASH), Russia

Co-Investigator(s)/Collaborator(s)
Information Pending

Developer(s)
Information Pending

Sponsoring Space Agency
Russian Federal Space Agency (Roscosmos)

Sponsoring Organization
Information Pending

Research Benefits
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ISS Expedition Duration
November 2000 - December 2002; November 2002 - May 2003; April 2003 - September 2015

Expeditions Assigned
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19/20,21/22,23/24,25/26,27/28,29/30,31/32,33/34,35/36,37/38,39/40,41/42,43/44

Previous Missions
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Experiment Description

Research Overview
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Description
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Applications

Space Applications
The results of the experiments will be useful in the creation and use of large-scale structures in space. The performance of Identifikatsiya is the only opportunity to experimentally confirm the reliability of the assessments of actual spectra of cyclical loading (in terms of loading levels and the number of cycles experienced) and for assessment of the conditions of microgravity in various working compartments in the station. These results are the foundation for assessing the degree of reliability and experimental monitoring of the depletion of the lifetime of ISS structure, which is particularly relevant with regard to extending the station's life.

Earth Applications
The Earth Application for this investigation has yet to be identified.

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Operations

Operational Requirements and Protocols
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Decadal Survey Recommendations

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Results/More Information

During the course of Identifikatsiya, a large amount of factual material, requiring systematization, was compiled on force loading and acceleration fields, which were recorded by onboard accelerometers that were located on ISS RS modules. Essentially, a database of samples of various external force loads was created. The measurement results obtained made it possible to determine the dynamic characteristics for various ISS configurations and to obtain data on the level and nature of propagation of dynamic disturbances from typical sources of external loads, based on the measurements of acceleration parameters in various modes.

In order to identify sources of micro-gravitational disturbances and other off-nominal dynamic loads on the ISS structure, methodological and software/algorithmic means were developed for mathematically recreating unknown parameters of external force loads, based on analysis of telemetry from onboard microacceleration sensors. Inverse problems of this type are of independent interest and have important applications in various areas of technology. It was established that during dynamic operations, the level of loading on the structures of modules did not exceed design values.

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Results Publications

    Anisimov AV, Likhoded AI.  Computational reconstruction of actual docking force loads on the structure of the International Space Station based on processing readings from onboard accelerometers. Kosmonavtika i Raketostroenie (Cosmonautics and Rocket Engineering). 2007; 49(4): 115-119.

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Ground Based Results Publications

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ISS Patents

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Related Publications

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Related Websites
Energia - Science Research on the ISS Russian Segment

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Imagery