## NASA technical note, Part 81921976 - Aeronautics |

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addition aerodynamic analysis angle antenna approximately attenuation bending boundaries calculation Center cloud cloud rise components concentration condition configuration coordinate deflections derived determined difference Diffusion direction display distribution effect elastic elevation equations equilibrium exhaust experiment Figure flap flap-lag Flight flow given ground important included increases indicated influence initial layer lead-lag linear maximum measurements method mode mode shapes motion NASA nonlinear noted obtained operating parameters path PENS period phase pitch angle plot polarization position precone prediction present procedure radar radiometer rain range ratio receiver recorded reference Report rotating rotor blade routine samples satellite shown in figure shows signal solution Space speed stability stiffness structural coupling surface temperature terminal tion torsion frequency values versus wave weather wind

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Page 162 - International d'Unités (SI). In certain cases, utility requires the retention of other systems of units in addition to the SI units. The conventional units stated in parentheses following the computed SI equivalents are the basis of the measurements and calculations reported. CONTENTS...

Page 60 - The results of the present investigation may be summarized as follows. 1.

Page 130 - SYMBOLS The units used for the physical quantities defined in this paper are given in the International System of Units (SI) and parenthetically in the US Customary Units.

Page 1 - Gillis, Clarence L.; Polhamus, Edward C.; and Gray, Joseph L., Jr.: Charts for Determining Jet-Boundary Corrections for Complete Models in 7- by 10-Foot Closed Rectangular Wind Tunnels.

Page 127 - NASA Langley Research Center Hampton, Va. 23665 11. Contract or Grant No.

Page v - Stability of Elastic Bending and Torsion of Uniform Cantilever Rotor Blades in Hover with Variable Structural Coupling.

Page 72 - Non-Linear Equations of Motion for the Elastic Bending and Torsion of Twisted Nonuniform Rotor Blades', NASA TN D-7818, (July 1974).

Page 1 - Summary of Methods for Calculating Dynamic Lateral Stability and Response and for Estimating Lateral Stability Derivatives.

Page 3 - Category 07 19. Security Classif. (of this reportl 20. Security Classif. (of this pagel 21. No. o f Pages 22 Price...

Page 41 - M.: Numerical Calculation of Reynolds Stresses in a Square Duct With Secondary Flow.