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June 26, 2008

NASA SMALL UNMANNED AIR VEHICLE LABORATORY (SUAVELab) TOPICS FOR CERTIFICATION WORKING GROUP. June 26, 2008. Michael J. Logan, P.E. Head, Small Unmanned Aerial Vehicle Laboratory (SUAVELab) NASA Langley Research Center. AGENDA. SUAVELab GUIDELINES Design Pre-flight testing

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June 26, 2008

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  1. NASA SMALL UNMANNED AIR VEHICLE LABORATORY (SUAVELab)TOPICS FOR CERTIFICATION WORKING GROUP June 26, 2008 Michael J. Logan, P.E. Head, Small Unmanned Aerial Vehicle Laboratory (SUAVELab) NASA Langley Research Center

  2. AGENDA • SUAVELab GUIDELINES • Design • Pre-flight testing • NASA LANGLEY ASRB • Airworthiness and Safety Review Board • FTOSR • Description of Flight Test Operation Safety Report • Hazards Analysis • OTHER INFO • DoD Unmanned Systems Guidelines & Safety Precepts

  3. SUAVELab Guidelines

  4. SUAVELab IN A NUTSHELL • What is SUAVELab?: • The Small Unmanned Aerial Vehicle Laboratory, SUAVELab, is a Multi-Disciplinary/Cross-Competency Team and specially designed laboratory facility to Design, Develop, and Deliver prototypes of beyond state-of-the-art UAV system solutions to end-user problems of critical and/or national importance. • Additional focus areas: • Develop tools, methods, systems, and procedures for rapid, low-cost UAV prototype design, development, and manufacture • Provide testbed vehicles for low-cost flight testing and research • Identify and accelerate specific promising technologies for use in UAV applications • Identify potential research areas based on demonstrated need • Primary Goal: • Provide a National Resource of small UAV expertise

  5. Future Today Capability (Range/Payload/Endurance) <11 55 220 “IRRELEVANT ZONE” AIRWORTHINESS SIZE STRATEGY Mini UAV Very Small UAV Small UAV Pt 25: 4 lb. Bird Strike to Windshield Weight, lbs. Pt 25: 8 lb. Bird Strike to Structure & Engine AMA Model Airplane Ultralight (254lb.) FAI Model

  6. DESIGN GUIDELINES FOR AIRWORTHINESS GUIDING PHILOSOPHY • Originally: • Develop a Design Guide to follow to ensure an airworthy UAV: • “If you follow these rules, you will have a good UAV” • Include techniques for sizing, analysis, EMI avoidance, etc. • Drawbacks: • Began to become more like college textbook • Some techniques are mission specific • Preferred Approach: • Develop a minimum set of rules that are likely to prevent development of a non-airworthy UAV: • “If you don’t follow these rules, you will likely have a bad UAV” • Include the minimum number of rules, pre-flight tests, etc. required for an “acceptable” risk level • Sets up “defaults” but doesn’t overrule more stringent or design specific requirements

  7. SAMPLE FROM GUIDELINE & COMPARISON

  8. EXAMPLE PRE-FLIGHT TESTING • LOAD TESTING (NEW DESIGN) • Loaded to design load factor (3g or 4g) + FOS (1 or 1.25) • Control surfaces checked for binding under load • DROP TESTS • Simulates 5-10 fps sink rate depending on size • Wheels/tires matched to terrain (larger wheels for grass ops) • GLIDE TESTS:

  9. NASA LANGLEY ASRB

  10. AIRWORTHINESS AND SAFETY REVIEW BOARD • PERFORMS AIRWORTHINESS AND SAFETY REVIEWS FOR ALL LANGLEY CONDUCTED MANNED AND UNMANNED RESEARCH PROGRAMS WITHIN THE ATMOSPHERE • Composed of Aviation Safety professionals and Subject Matter Experts, meets regularly and as needed • PROVIDES: • Airworthiness reviews and inspections of aircraft & systems • Issues Flight Safety Releases • Hazards Analyses and Risk Assessments • Approves Flight Test Operations and Safety Reports • REPORTS ACTIVITIES TO: • Langley Executive Safety Council • NASA InterCenter Aircraft Operations Panel • Aerospace Safety Advisory Panel

  11. FTOSR

  12. FTOSR DESCRIPTION • FLIGHT TEST OPERATIONS AND SAFETY REPORT (FTSOR): • Composed of a description of the flight tests/research to be performed, location, the systems being used, procedures, hazards, and risks • PROVIDES: • Method for ensuring that the system is safe to operate under the conditions desired • Hazards and Risks Assessment for the specific mission(s), and location • Lists specific procedures to be followed • IS REVIEWED AND APPROVED BY ASRB

  13. HAZARDS AND RISK ANALYSIS

  14. DoD Unmanned Systems Guidelines

  15. DoD UNMANNED SYSTEMS SAFETY GUIDE • DoD Unmanned Systems Safety Guide for DoD Acquisition • Issued by USD, AT&L after collaborative effort across DoD, NASA, and industry • Can be found at http://www.acq.osd.mil/atptf/pdf/Unmanned_Guide_DOD_Acq_2007.pdf • PROVIDES: • Basic safety “precepts” for both design and operations • Information on DoD “best practices” for unmanned systems (including UAS)

  16. CONCLUDING REMARKS • OPPORTUNITIES EXIST TO: • Draw from existing knowledge • Minimize the burden on potential small UAS users • Maximize the safe utilization of the airpspace

  17. QUESTIONS?

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