Tests of Full-Scale Helicopter Rotors at High Advancing Tip Mach Numbers and Advance Ratios

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1 NASA/TM Tests of Full-Scale Helicopter Rotors at High Advancing Tip Mach Numbers and Advance Ratios James C. Biggers and John L. McCloud III Ames Research Center Moffett Field, California Robert H. Stroub Army Aeronautical Research Laboratory Ames Research Center Moffett Field, California May 2015

2 This page is required and contains approved text that cannot be changed. NASA STI Program... in Profile Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA scientific and technical information (STI) program plays a key part in helping NASA maintain this important role. The NASA STI program operates under the auspices of the Agency Chief Information Officer. It collects, organizes, provides for archiving, and disseminates NASA s STI. The NASA STI program provides access to the NTRS Registered and its public interface, the NASA Technical Reports Server, thus providing one of the largest collections of aeronautical and space science STI in the world. Results are published in both non- NASA channels and by NASA in the NASA STI Report Series, which includes the following report types: TECHNICAL PUBLICATION. Reports of completed research or a major significant phase of research that present the results of NASA Programs and include extensive data or theoretical analysis. Includes compilations of significant scientific and technical data and information deemed to be of continuing reference value. NASA counterpart of peer-reviewed formal professional papers but has less stringent limitations on manuscript length and extent of graphic presentations. CONFERENCE PUBLICATION. Collected papers from scientific and technical conferences, symposia, seminars, or other meetings sponsored or co-sponsored by NASA. SPECIAL PUBLICATION. Scientific, technical, or historical information from NASA programs, projects, and missions, often concerned with subjects having substantial public interest. TECHNICAL TRANSLATION. English-language translations of foreign scientific and technical material pertinent to NASA s mission. Specialized services also include organizing and publishing research results, distributing specialized research announcements and feeds, providing information desk and personal search support, and enabling data exchange services. For more information about the NASA STI program, see the following: Access the NASA STI program home page at your question to TECHNICAL MEMORANDUM. Scientific and technical findings that are preliminary or of specialized interest, e.g., quick release reports, working papers, and bibliographies that contain minimal annotation. Does not contain extensive analysis. CONTRACTOR REPORT. Scientific and technical findings by NASA-sponsored contractors and grantees. Phone the NASA STI Information Desk at Write to: NASA STI Information Desk Mail Stop 148 NASA Langley Research Center Hampton, VA

3 NASA/TM Tests of Full-Scale Helicopter Rotors at High Advancing Tip Mach Numbers and Advance Ratios James C. Biggers and John L. McCloud III Ames Research Center Moffett Field, California Robert H. Stroub Army Aeronautical Research Laboratory Ames Research Center Moffett Field, California National Aeronautics and Space Administration Ames Research Center Moffett Field, CA May 2015

4 Available from: NASA Center for AeroSpace Information National Technical Information Service 7115 Standard Drive 5301 Shawnee Road Hanover, MD Alexandria, VA This report is also available in electronic form at

5 TABLE OF CONTENTS List of Figures... iv List of Tables... iv Introduction... 1 Notation... 2 Model Description... 5 General... 5 Rotors... 6 Operating Procedures... 7 Data Reduction... 7 Data Presentation References iii

6 LIST OF FIGURES Figure 1. General view of rotor system Figure 2. Upper and lower surface coordinates of blade tip airfoil section for rotors no. 1 and Figure 3. Rotor velocity diagram LIST OF TABLES Table I-1. Table I-2. Table I-3. Table I-4. Table I-5. Table I-6. Table I-7. Table I-8. Table I-9. Table I-10. Table I-11. Table I-12. Table I-13. Table I-14. Table I-15. Table I-16. Table I-17. Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.30, M(1.0, 90) = Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.30, M(1.0, 90) = Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.30, M(1.0, 90) = Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.31, M(1.0, 90) = Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.35, M(1.0, 90) = Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.35, M(1.0, 90) = Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.35, M(1.0, 90) = Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.35, M(1.0, 90) = Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.40, M(1.0, 90) = Rotor Scale Data, Program LA2430, Wind Axes Rotor No. 1, V/OR =.40, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.31, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.36, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.36, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.40, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.41, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.45, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.46, M(1.0, 90) = iv

7 LIST OF TABLES (CONT.) Table I-18. Table I-19. Table I-20. Table I-21. Table I-22. Table I-23. Table I-24. Table I-25. Table I-26. Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.45, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.51, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 2, V/OR =.52, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 3, V/OR =.51, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 3, V/OR =.65, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 3, V/OR =.75, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 3, V/OR =.86, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 3, V/OR =.94, M(1.0, 90) = Rotor Scale Data, Program LA3530, Wind Axes Rotor No. 3, V/OR = 1.1, M(1.0, 90) = Table II-1. Table II-2. Table II-3. Table II-4. Table II-5. Table II-6. Table II-7. Table II-8. Table II-9. Table II-10. Table II-11. Table II-12. Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.30, M(1.0, 90) = Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.30, M(1.0, 90) = Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.30, M(1.0, 90) = Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.31, M(1.0, 90) = Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.35, M(1.0, 90) = Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.35, M(1.0, 90) = Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.35, M(1.0, 90) = Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.35, M(1.0, 90) = Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.40, M(1.0, 90) = Rotor Scale Data, Program LA2430, Body Axes Rotor No. 1, V/OR =.40, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.32, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.36, M(1.0, 90) = v

8 LIST OF TABLES (CONT.) Table II-13. Table II-14. Table II-15. Table II-16. Table II-17. Table II-18. Table II-19. Table II-20. Table II-21. Table II-22. Table II-23. Table II-24. Table II-25. Table II-26. Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.36, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.40, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.41, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.45, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.46, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.45, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.51, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 2, V/OR =.52, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 3, V/OR =.51, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 3, V/OR =.65, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 3, V/OR =.75, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 3, V/OR =.86, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 3, V/OR =.94, M(1.0, 90) = Rotor Scale Data, Program LA3530, Body Axes Rotor No. 3, V/OR = 1.1, M(1.0, 90) = vi

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