Monthly Report for Space Robotic FMS PreCommercialization Development February 28, 2019
Investigating interaction w.r.t shear modes and torsion mode. Reviewing interface spec for potential Lunar Gateway robotics to understand FMS implications.
AnalysisShear modes have increased in frequency. But the resolution on the torsion mode has deteriorated, which might be the result of shear mode pair changes. Studying possibility of travelling wave impact.
Software Simulationno change
Breadboard Manufacturingno change
Performance testing has begun with nominal, but undefined tension in struts. Mostly just correlating with previous results.
- axial (all 4 segments in phase)
- rocking (4 sets)
- 1/2 saddle (2 sets)
- individual segments (4: 0,1,2,3)
Plans for March.
Consider alternate means of exciting torsion mode. Investigate apparent double peak for first shear mode. Investigate discrepancies between FE model and test results, at system level (ie external boundary condition assumptions)