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activated AERONAUTICS AND SPACE aircraft airplane alloys angle of attack angleply anode APPENDIX applied blades boattail brake calculated Center Charpy coating coefficients composites computed contribution coordinates derivatives determined direction distribution drag effect energy engine equation estimates failure fiber field Figure flight flow forces fracture frequency friction function geometry heat transfer impact strength impact tests increased indicated installation load located longitudinal lower maneuver material matrix maximum measured method mode NASA National Aeronautics negative neutral Note observed obtained occur operation percent Performing plane plasma positive presented pressure profiles PUBLICATIONS reduced reference region Report Research Reynolds number rotation shear shown in figure shows side single SPACE ADMINISTRATION specimens speed strain stress Strip structure surface TECHNICAL temperature tensile tests tion transverse values wear wheel wing
Page 3 - National Aeronautics and Space Administration Washington, DC 20546 14. Sponsoring Agency Code 17. Key Words (Suggested by Author(s)) 18.
Page 23 - ... Intraply Hybrid Composites," NASA TM 79253, National Aeronautics and Space Administration, Washington, DC, 1979; also "Modern Developments in Composites Materials and Structures" in Proceedings, American Society of Mechanical Engineers Winter Annual Meeting, New York, 2-7 Dec. 1979, pp. 253-267. \4] Chamis, CC, Kring, JF, and Sullivan, TL, "Automated Testing Data Reduction Computer Program," NASA TM X 68050, National Aeronautics and Space Administration, 1972.
Page 13 - Practical aspects of a maximum likelihood estimation method to extract stability and control derivatives from flight data INASA-TN-D-8209) 14 pl761 N76-23272 njN.
Page 5 - Home, Walter B.; McCarty, John L.; and Tanner, John A.: Some Effects of Adverse Weather Conditions on Performance of Airplane Antiskid Braking Systems. NASA TN D-8202, 1976.
Page 5 - Al matrices Impact failure modes of B/AI are proposed in an attempt to describe the mechanisms involved and to provide insight for maximizing impact resistance The impact strength of B/AI was significantly increased by proper selection of materials and processing The use of a ductile matrix and large diameter boron fibers gave the highest impact strengths.
Page 3 - Category 02 19. Security Classif. (of this report! 20. Security Classif. (of this pagel 21. No. of Pages 22. Price...
Page 16 - Characteristics of Major Active Wind Tunnels at the Langley Research Center,
Page 37 - The second control law employs primarily the elastic contribution of the wing and leads to large increases m the activated control effectiveness as compared with the basic control law The results indicate that flutter speed can be significantly increased (over 70 percent increase) and that the bending moment due to gust loading can be almost totally eliminated by a control system of about 10 to 20 percent span with reasonable control-surface rotations Author N76 28949*0 National Aeronautics and Space...
Page 5 - Charpy impact tests were conducted on composites containing unidirectional 0.10mm. 0 14mm. and 020mm diameter boron fibers in 1100. 2024. 5052. and 6061 Al matrices Impact failure modes of B/AI are proposed in an attempt to describe the mechanisms involved and to provide insight for maximizing impact resistance The impact strength of...