Identification of the Sources of Dynamic Loads on ISS (Identifikatsia (Identification)) - 10.25.17

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

ISS Science for Everyone

Science Objectives for Everyone
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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)
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Developer(s)
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Sponsoring Space Agency
Russian Federal Space Agency (Roscosmos)

Sponsoring Organization
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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
Investigation of dynamic loads onto the ISS RS structure when different dynamic operations are performed at the ISS, namely: docking, reboost, execution of physical exercises by operators, extravehicular activity. Determination of micro-acceleration conditions in areas of technological experiments.

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Applications

Space Applications
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Earth Applications
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Operations

Operational Requirements and Protocols
Linear optical accelerometers, Low acceleration meters, Onboard measurement telemetry system, Sensors of angular rates and positioning of solar arrays and high-gain antenna.
Measurement of accelerations and micro-accelerations on ISS RS structural elements under different external effects. Investigation of micro-gravity conditions in the Service Module and FGB.

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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