PRESSURE SPECTRA AND SPACE CORRELATIONS FROM AERODYNAMIC NOISE TEST, AD- 366 P-1, SPO NO. 149 AND 150
Abstract
Aerodynamically excited fluctuating pressures are expected to be the main force of structural vibration during flight. Little experimental data is available on both the pressure magnitude and space-time correlation of the fluctuating pressure field. Therefore, a test program was undertaken with the primary objective of obtaining experimental back-up data for estimates of the X- 20 flight acoustic environment. All acoustic data are direct model data. Analysis of the data for application to the full scale X-20 glider is to be conducted. Vibration sensitivity of the transducers obscured much of the acoustic data below 145 db. However, extensive data were obtained on spectra and space correlation at locations where the aerodynamic noise levels ranged from 145 db (! .052 psi RMS) to 165 db (!0.52 psi RMS).
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 11, 1963
- Accession Number
- AD0426200
Entities
People
- J. Sugamele
Organizations
- Boeing