NASA's Unmanned Aerial Systems (UAS) integration into the National Air Space (NAS) project has been working closely with the FAA and RTCA Special Committee 228 to identify and break down barriers to UAS integration. A focus of this work is on detect and avoid (DAA) technologies. A pilot has responsibility to see and avoid other aircraft and to remain "well clear," using their best judgment (Federal Aviation Regulations (FAR) Sec. 91.113). For UAS to perform this function, the see function is replaced by sensors to detect the other aircraft. Secondly, the pilot judgment of well clear has to be replaced by a mathematical expression. For Phase 1 of this effort, a well clear violation was defined if all three of these conditions are true: a) the horizontal clearance is less than 4000 ft., and b) the vertical clearance is less than 450 ft., and c) the time to loss of well clear is less than 35 seconds. This definition was developed with a great deal of community input and testing to ensure interoperability with Air Traffic Control (ATC) and pilots of manned aircraft. Appropriate guidance, alerting and displays were developed to allow UAS, with the appropriate sensors, to effectively maintain well clear. This work contributed to FAA Technical Standard Orders: TSO-C211, Detect and Avoid and TSO-C212, ATAR for Traffic Surveillance. Phase 2 of this work extends the operational environment to include the terminal area and lesser capable aircraft that might not have the payload capability to carry the RADAR defined in Phase 1. This session reports on work from Phase 1 and initial work in Phase 2.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Detect and Avoid: Efforts from NASA's UAS Integration into the NAS Project


    Contributors:

    Conference:

    2018 AIAA Aviation Forum ; 2018 ; Atlanta, GA, United States


    Publication date :

    2018-06-25


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    UAS Detect and Avoid: Efforts from NASA’s UAS Integration into the NAS Project

    Johnson, William C. / Shively, Robert J. | AIAA | 2018


    Detect and Avoid: Efforts from NASA's UAS Integration into the NAS Project (AIAA 2018-2871)

    Shively, Robert J. / Wu, Minghong G. / Fern, Lisa et al. | British Library Conference Proceedings | 2018


    DETECT AND AVOID SENSOR INTEGRATION

    HEFNER LEVI / GRIFFIN MAURICE / ANDREWS JENNIFER DIANA | European Patent Office | 2023

    Free access

    DETECT AND AVOID SENSOR INTEGRATION

    HEFNER LEVI / GRIFFIN MAURICE / ANDREWS JENNIFER DIANA | European Patent Office | 2022

    Free access

    Detect and avoid sensor integration

    HEFNER LEVI / GRIFFIN MAURICE / ANDREWS JENNIFER DIANA | European Patent Office | 2024

    Free access