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Monthly Report for Space Robotic & Terrestrial FMS PreCommercialization Development November 30, 2025

Summary

Continuing tech paper preparation, examining linear modes of prototypes 2 and 3.

Specification

No change.

Design

No change.

Analysis

identifying and comparing 'housing', linear mode shape for FE and test results. Comparing internal and external boundary condition test implications.

Software Simulation

no change

Breadboard Manufacturing

no change

Breadboard Testing

no new testing

Calibration Test Rig

no change

Plans for December

Complete and post tech paper. Gather intelligence for potential proposal, or partner.

What's so tough?

Temperature Lack of atmosphere drives temperatures to be either hot in sun or cold in shade. Robots are for moving things around, so they go into and out of shade repeatedly.

Force not directly measureable. It can be inferred from strain or deflection. Such measures are affected by thermal distorsion.

Large dynamic range linear vs rotation forces. Long robot arms and the need to capture 'free flyers' generates large rotational forces.

High Stiffness A high stiffness requirement, makes measurement of strain or deflection more difficult to isolate from thermal distorsion.

Drift Space operations tend to be slow - often taken over a period of hours.

6 dof It is important to distinguish all 6 degrees of force measurement, but the shear and moment loading cases can produce difficult to distinguish effects