SPHERES ISS Test Sessions

Test Session Details

NumberTS25
NameCoupled Synamics Architecture Performance
GMT Date301/2010
Date2010-10-28
Start (ET)11:12
End (ET)19:12
Duration03:00
Expedition25
Crew MembersScott Kelly
Summary

The SPHERES Test Session 25 occurred on 2010-October-28. The session lasted two hours and a half due to a 15 minutes delay in the starting time and a premature end, almost 30 minutes in advance. Despite the time constraints the group A success marker was reached and the first 3 tests belonging to group B were successfully run. Group C was not expected to take place due to the limited time available while the remaining tests in group B, that correspond to the ZR test, were postponed because of the unexpected time reduction.

The 3 group B tests run, corresponding to relative control, provided valuable data for evaluating the coupled dynamics architecture performance. The fuel consumption and maneuver time were compared to the same metrics found in similar tests in TS20 using independent architecture. The data analysis from the stop and stare test has shown how the maneuver time is reduced using a Phase-Plane control system combined with coupled dynamics. However, the fuel consumption was increased. We believe that future improvements can lead to a reduction in the fuel consumption. The spiral test pointed out that a tradeoff between fuel consumption and tracking precision must be done by tuning the gain configuration of the control system.

Test PlanPDF Test Plan: SPHERES_Test_Plan_ISS_25.pdf
Results ReportSPHERES_ISS_TS025_Report.pdf
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Source last updated: 2014/07/24 15:13:38 by alvarso