An ejection system is designed to rescue the pilot or crew of a military aircraft in an emergency.The seat, parachute and survival pack are also ejected from the aircraft along with the crewmember.The pilot may be ejected at high altitudes and at very high air speeds.However, there is a problem with developing a realistic ejection event for ground based testing.There is a need for a robust and accurate sensor package to assess the system performance.Orbital Research will develop a new class of small sensors to assess the egress system performance. These sensors will accurately record time, space, and position information (TSPI) data be collected on the ejection seat and manikin to better than 0.5 microseconds , 1 foot and 1 degree. Our solution will be developing a system with the high performance of a tactical grade IMU while minimizing the size and cost.The proposed solution is completely standalone and will be integrated into the test manikin to quantifiably measure the pitch, roll, and yaw anglesof the seat/manikin combination at the beginning of the egress event and of the manikin as and after it is released from the seat .Time Space and Position Information (TSPI),Traumatic Brain Injury(TBI),tactical grade IMU,accelerometers and gyroscopes,dead reckoning,whole body or component injury criteria,epidemiology of injury,ejection criteria