Propeller-noise Charts for Transport Airplanes
| Author | : Harvey H. Hubbard |
| Publisher | : |
| Total Pages | : 2 |
| Release | : 1953 |
| Genre | : Charts, diagrams, etc |
| ISBN | : |
Propeller Noise Charts For Transport Airplanes
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Propeller-noise Charts for Transport Airplanes
| Author | : Harvey H. Hubbard |
| Publisher | : |
| Total Pages | : 47 |
| Release | : 1953 |
| Genre | : Charts, diagrams, etc |
| ISBN | : |
It is emphasized that, if noise reductions are to be obtained or if present noise levels are to be maintained for higher power ratings, future propeller designs should operate at lower tip Mach numbers are currently being used. Single- rather than dual-rotating propellers were found to generate the lowest over-all noise levels for a given number of blades.
Technical Note - National Advisory Committee for Aeronautics
| Author | : United States. National Advisory Committee for Aeronautics |
| Publisher | : |
| Total Pages | : 1026 |
| Release | : 1958 |
| Genre | : Aeronautics |
| ISBN | : |
Noise Survey of a 10-foot Four-blade Turbine-driven Propeller Under Static Condtions
| Author | : Max C. Kurbjun |
| Publisher | : |
| Total Pages | : 686 |
| Release | : 1955 |
| Genre | : Noise |
| ISBN | : |
Theoretical calculations of the sound-pressure levels by the method of NACA TN 2968 predict accurately, for the 10-foot propeller investigated, the location of and the maximum levels to be expected for the overall noise and the first two propeller harmonics. The calculations do not predict accurately the location of the maximum sound-pressure levels ad the maximum calculated levels are 10 and 13 decibels lower than the msximm messured levels for the third and fourth harmonics, respectively.
Index of NACA Technical Publications
| Author | : United States. National Advisory Committee for Aeronautics |
| Publisher | : |
| Total Pages | : 258 |
| Release | : 1953 |
| Genre | : Aeronautics |
| ISBN | : |
Annual Report
| Author | : United States. National Advisory Committee for Aeronautics |
| Publisher | : |
| Total Pages | : 534 |
| Release | : 1953 |
| Genre | : Aeronautics |
| ISBN | : |
Report - National Advisory Committee for Aeronautics
| Author | : United States. National Advisory Committee for Aeronautics |
| Publisher | : |
| Total Pages | : 1246 |
| Release | : 1953 |
| Genre | : Aeronautics |
| ISBN | : |
Annual Report of the National Advisory Committee for Aeronautics
| Author | : United States. National Advisory Committee for Aeronautics |
| Publisher | : |
| Total Pages | : 1138 |
| Release | : 1953 |
| Genre | : Aeronautics |
| ISBN | : |
Includes the Committee's Reports no. 1-1058, reprinted in v. 1-37.
