Next Generation Aircraft Debris Hazard Area Calculator Requirements Definition and Prototyping

The Contractor shall identify and document requirements for the next generation aircraft debris hazard area calculator. These requirements shall be based upon requirements for the Shuttle Hazard Area to Aircraft Calculator (SHAAC), developed and enhanced under multiple task orders of this contract, and the lessons learned in its design, development, testing, and operations. These requirements shall address the input, output, interface, and computational algorithm needs of a tool to support airspace management around space operations through the prediction of aircraft debris hazard areas associated with the reentries of capsule-type vehicles, such as the SpaceX Dragon and the Orbital Sciences Cygnus, and controlled reentries of other space objects, including satellites. These requirements shall address the following: (a.) The input of predicted vehicle state vector data in a format specified by the Federal Aviation Administration (FAA). (b.) The input of debris characteristics specific to the reentry vehicles being analyzed. (c.) The output of input predicted state vector data, formatted for input into existing air traffic tools such as the Display System Replacement (DSR) and NOTAM system (format templates to be provided by the FAA). (d.) The output of computed predicted debris hazard area packages, consisting of both graphical and textual representations of the computed areas, for manual entry into existing air traffic tools (format templates to be provided by the FAA). (e.) Output of additional parameters, including ---- Input trajectory and computed hazard areas in KML format ---- Fall time of debris, by class, from breakup to various altitudes, such as 60,000 ft, 18,000 ft, and surface, output in time since breakup and GMT based on both predicted and realtime input vehicle state vector data ---- Length, width, and orientation of each computed hazard area based on input predicted vehicle state vector data ---- GMT of the vehicle's entry and exit of each predicted hazard area based on input predicted vehicle state vector data ---- GMT of the beginning and end GMT at which an underlying Air Route Traffic Control Center is at risk of falling debris based on input predicted vehicle state vector data ---- Graphical representation of portions of the predicted trajectory and hazard areas that correspond geographically to input predicted times of loss of signal and acquisition of signal (f.) An interface to a realtime stream of vehicle state vector data, delivered via virtual private network (VPN) or other Internet protocol. (g.) The automated entry of state vector data received via the realtime stream into the computation of a best estimate debris hazard area. (h.) The automated graphical representation of vehicle geographical position based on input realtime state vector data. (i.) The logging of all realtime data received. (j.) The playback of logged realtime data (k.) Potential algorithm improvements needed to address failure modes associated with capsule-type vehicles and the controlled reentries of other space objects, including: ---- Realtime hazard area computation during periods of loss of signal ---- Predicted hazard area computation based on trajectory guidance and performance uncertainties, including those uncertainties associated with the performance of the deorbit burn. Prototyping of these requirements, through pseudo-code or beta-software, shall be conducted, where applicable and possible. The requirements identified shall be documented, along with their corresponding rationale, in a report suitable for distribution to AST and its Air Traffic Organization partners.

  • Supplemental Notes:
    • Program Information: Commercial Space Transportation, Vehicle Safety - Analyses


  • English


  • Status: Active
  • Contract Numbers:


  • Sponsor Organizations:

    Federal Aviation Administration

    800 Independence Avenue, SW
    Washington, DC  United States  20591
  • Project Managers:

    Davidian, Ken

  • Performing Organizations:


  • Start Date: 20100401
  • Expected Completion Date: 0
  • Actual Completion Date: 20110401
  • Source Data: RiP Project 30457

Subject/Index Terms

Filing Info

  • Accession Number: 01483867
  • Record Type: Research project
  • Source Agency: Department of Transportation
  • Contract Numbers: DTFAWA-06-D-00013
  • Files: RiP
  • Created Date: Jun 14 2013 1:01AM