of the cloud • Use little or no closed-loop control • Take advantage of environmental effects HOW DO WE PLAN MISSIONS? f(qi, ˙ qi, t) @f @t + @f @qi ˙ qi + @f @ ˙ qi ¨ qi = 0 @f @t µ r2 @f @ ˙ r + ˙ r @f @r + ˙ ✓ @f @✓ + ˙ @f @ = 0 10
within 12,000 km of Earth • Diameter 10-50 meters • Impact Mission • Deploy ChipSats from a carrier spacecraft • Maximize number that impact • Survivors transmit sensor data to carrier ASTEROID IMPACT MISSION 11
surface • Calculate confidence bounds by repeating for different trajectories and asteroid sizes • Pimpact = 1.4% • 90% Confidence Interval 0.16% - 2.4% • Impact Survival ASTEROID IMPACT 14
ChipSats can be deployed in large numbers • Probabilities and confidence intervals associated with mission objectives can be rigorously calculated • Successful missions can be designed even for very low probabilities of individual success 15 FUTURE WORK • Impact survival model • Include perturbations and uncertainty in dynamics • Develop a general mission planning framework