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SAFEGUARD: An Assured Safety Net Technology for UAS
NTRS Full-Text: Click to View  [PDF Size: 495 KB]
Author and Affiliation:
Dill, Evan T.(NASA Langley Research Center, Hampton, VA, United States)
Young, Steven D.(NASA Langley Research Center, Hampton, VA, United States)
Hayhurst, Kelly J.(NASA Langley Research Center, Hampton, VA, United States)
Abstract: As demands increase to use unmanned aircraft systems (UAS) for a broad spectrum of commercial applications, regulatory authorities are examining how to safely integrate them without loss of safety or major disruption to existing airspace operations. This work addresses the development of the Safeguard system as an assured safety net technology for UAS. The Safeguard system monitors and enforces conformance to a set of rules defined prior to flight (e.g., geospatial stay-out or stay-in regions, speed limits, altitude limits). Safeguard operates independently of the UAS autopilot and is strategically designed in a way that can be realized by a small set of verifiable functions to simplify compliance with regulatory standards for commercial aircraft. A framework is described that decouples the system from any other devices on the UAS as well as introduces complementary positioning source(s) for applications that require integrity and availability beyond what the Global Positioning System (GPS) can provide. Additionally, the high level logic embedded within the software is presented, as well as the steps being taken toward verification and validation (V&V) of proper functionality. Next, an initial prototype implementation of the described system is disclosed. Lastly, future work including development, testing, and system V&V is summarized.
Publication Date: Sep 25, 2016
Document ID:
20160012239
(Acquired Oct 12, 2016)
Subject Category: AIR TRANSPORTATION AND SAFETY
Report/Patent Number: NF1676L-25048
Document Type: Conference Paper
Meeting Information: 35th Digital Avionics Systems Conference (DASC) 2016; 25-29 Sep. 2016; Sacramento, CA; United States
Meeting Sponsor: American Inst. of Aeronautics and Astronautics; Reston, VA, United States
Institute of Electrical and Electronics Engineers; Piscataway, NJ, United States
Contract/Grant/Task Num: WBS 154692.02.10.07.01
Financial Sponsor: NASA Langley Research Center; Hampton, VA, United States
Description: 10p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: UNMANNED AIRCRAFT SYSTEMS; COMMERCIAL AIRCRAFT; AIR TRAFFIC CONTROL; FLIGHT SAFETY; SAFETY DEVICES; FLIGHT MANAGEMENT SYSTEMS; GLOBAL POSITIONING SYSTEM; AIRCRAFT APPROACH SPACING; SAFETY MANAGEMENT; TECHNOLOGY ASSESSMENT; PROTOTYPES
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