Acoustic Tests on a Fan-in-Wing Model: Effects of an Extended Inlet. (Essais Acoustiques d'une Maquette de Rotor Noye dans l'Aile: Influence d'une Extension de l'Entree d'Air du Rotor).
Abstract
The study describes the comparative acoustic tests conducted on a 12 in. diameter fan-in-wing model with an extended inlet referenced to the standard shallow inlet. The aim of the tests was to find the effect of extending the depth of the inlet on the noise radiation characteristics of the fan, both at static and crossflow conditions. The studies also included induct sound measurements done to observe the change in the characteristics of the blade passing frequency tones due to crossflow over the fan. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1974
- Accession Number
- AD0782203
Entities
People
- G. Krishnappa
Organizations
- National Research Council Canada