1. Michael White & Erik Mueller

2.  The thruster involved works by the principle of chemical decomposition  Catalyst renders the mixture unstable  Propellant decomposes, producing thrust

3. PROBLEM  Small size  Milli-newton thrust  Must be done in a vacuum SOLUTION  Three-axis movement sensing  Modular support cradle  Either a vacuum housing or made to fit inside an existing chamber

4.  Two possible methods  Load cell/resistor strain gauge  Piezo-resistors  Other methods include – optical sensing (deflection of light)

5.  Ridged mounting system  3 connection points  Fixed against motion in one direction  Free floating motion in other two directions  Quick installation/replacement  Custom built enclosure with minimal tolerances to eliminate “slop”

7.  Sensors Uniaxial resistive strain gauge(matched to aluminum) - $27.50 per pack of 5  Cradle Aluminum tubing for frame -

8.  Research - 2 weeks  Planning - 3 weeks  Testing concepts -1 week  3D rendering -3 weeks  Prototype to test complete assembly -3 weeks  Revision -2 week  Final product – 4 weeks