𝔖 Bobbio Scriptorium
✦   LIBER   ✦

New Computational Methods for the Prediction and Analysis of Helicopter Noise

✍ Scribed by Strawn, Roger C.; Oliker, Leonid; Biswas, Rupak

Book ID
118027066
Publisher
American Institute of Aeronautics and Astronautics
Year
1997
Tongue
English
Weight
321 KB
Volume
34
Category
Article
ISSN
0021-8669

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

AN EFFICIENT AND ROBUST METHOD FOR PREDI
AN EFFICIENT AND ROBUST METHOD FOR PREDICTING HELICOPTER HIGH-SPEED IMPULSIVE NOISE
✍ K.S. Brentner πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 English βš– 202 KB

A new formulation for the Ffowcs Williams-Hawkings quadrupole source is presented for helicopter-rotor noise prediction. The formulation is a far-field approximation which is exact for a far-field in-plane observer. The approximation is new and unique in that no further approximation of the quadrupo

THE NEW NORDIC PREDICTION METHOD FOR RAI
THE NEW NORDIC PREDICTION METHOD FOR RAILWAY NOISE
✍ M. Ringheim πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 284 KB

The existing Nordic Prediction Method for Railway Noise is more than 10 years old [1]. It was developed as a manual method for fairly simple geometries. During 1993-4 it became clear that a complete revision was necessary. The method is primarily intended to serve as a planning tool. It can be used