Sensor Test for Orion Relative Navigation Risk Mitigation - DTO 703 (STORRM) tests the Vision Navigation Sensor, Star Tracker, and Docking Camera planned for Orion both during shuttle approach to and departure from the ISS. This test determines how well the navigation system performs during the mission.Principal Investigator(s)
Ball Aerospace Technology Corporation, Boulder, CO, United States
National Aeronautics and Space Administration (NASA)Sponsoring Organization
Human Exploration and Operations Mission Directorate (HEOMD)Research Benefits
Information PendingISS Expedition Duration:
Information PendingPrevious ISS Missions
This is the first mission to use the Vision Navigation Sensor part of STORRM. The Star Tracker has flown in previous missions, although not in this configuration.
Sensor Test for Orion Relative Navigation Risk Mitigation - DTO 703 (STORRM) hardware will be hard mounted in two locations. The Vision Navigation Sensor and Docking Camera will be mounted on the existing unused Trajectory Control System (TCS) on the Orbiter Docking System (ODS) Truss. The Star Tracker and data interface controller will be mounted on an Orbiter sidewall carrier in the orbiter Payload. The Star Tracker has not yet flown in this configuration and STORRM will allow data to test the new centroiding (center of mass) algorithm software. Data will be collected during rendezvous, departure, flyover and re-rendezvous with the ISS. A Payload General Support Computer (PGSC) will provide experiment control, data processing, and limited data recording.
STORRM demonstrates and characterizes on-orbit performance of new navigation system technology prior to the first Orion mission to ISS.Earth Applications
Results allow for improved math models and design of future hardware.
One crewmember sets up for operations, activates and deactivates the system. This crewmember is required to view data in real time to determine whether all three sensors are performing nominally during rendezvous, approach, docking, undocking, flyover, and rendezvous. If required, the crewmember executes procedures or sends manual commands to the DTO avionics for corrective actions. Crew action is required to activate data recording systems during approach/docking and during undocking and rendezvous. The PGSC is operated by a crewmember using a custom software interface. External power is controlled and applied via Standard Switch Panel or similar. Ground personnel has the capability to downlink data and uplink files to the PGSC when necessary.Operational Protocols
Upon initial approach and docking to ISS, one crewmember applies heater power to sensors in the Payload Bay (PLB) once PLB doors are opened. The crewmember then sets up the PGSC, initializes software and applies power to the sensors. At this point operation and data acquisition commences. Monitoring the PGSC occurs at periodic intervals in order to verify sensor performance, and possibly send troubleshooting commands. After docking, power is removed from the sensors and operations and data acquisition cease. Prior to undocking, power is applied to the sensors and operation and data acquisition commence. Monitoring the PGSC occurs at periodic intervals in order to verify sensor performance, and possibly send troubleshooting commands. After rendezvous power is once again removed from the sensors and operation and data acquisition ceases. The PGSC is stowed. Heater power to the sensors and avionics in the PLB is removed once the PLB doors close.