Matches in SemOpenAlex for { <https://semopenalex.org/work/W3024835285> ?p ?o ?g. }
Showing items 1 to 77 of
77
with 100 items per page.
- W3024835285 abstract "The mechanism by which the noise generated at the blade passing frequency by a propeller is altered when the propeller axis is at an angle of attack to the freestream is examined. The measured noise field is distinctly non axially symmetric under such conditions with far field sound pressure levels both diminished and increased relative to the axially symmetric values produced with the propeller at zero angle of attack. Attempts have been made to explain this non axially symmetric sound field based on the unsteady (once per rev) loading experienced by the propeller blades when the propeller axis is at non zero angle of attack. A calculation based on this notion appears to greatly underestimate the measured azimuthal asymmetry of noise for high tip speed, highly loaded propellers. A new mechanism is proposed; namely, that at angle of attack, there is a non axially symmetric modulation of the radiative efficiency of the steady loading and thickness noise which is the primary cause of the non axially symmetric sound field at angle of attack for high tip speed, heavily loaded propellers with a large number of blades. A calculation of this effect to first order in the crossflow Mach number (component of freestream Mach number normal to the propeller axis) is carried out and shows much better agreement with measured noise data on the angle of attack effect." @default.
- W3024835285 created "2020-05-21" @default.
- W3024835285 creator A5050903116 @default.
- W3024835285 date "1990-01-01" @default.
- W3024835285 modified "2023-09-23" @default.
- W3024835285 title "The radiation of sound from a propeller at angle of attack" @default.
- W3024835285 hasPublicationYear "1990" @default.
- W3024835285 type Work @default.
- W3024835285 sameAs 3024835285 @default.
- W3024835285 citedByCount "0" @default.
- W3024835285 crossrefType "journal-article" @default.
- W3024835285 hasAuthorship W3024835285A5050903116 @default.
- W3024835285 hasConcept C115961682 @default.
- W3024835285 hasConcept C120665830 @default.
- W3024835285 hasConcept C121332964 @default.
- W3024835285 hasConcept C127413603 @default.
- W3024835285 hasConcept C13393347 @default.
- W3024835285 hasConcept C154945302 @default.
- W3024835285 hasConcept C165231844 @default.
- W3024835285 hasConcept C182748727 @default.
- W3024835285 hasConcept C196558001 @default.
- W3024835285 hasConcept C199104240 @default.
- W3024835285 hasConcept C24890656 @default.
- W3024835285 hasConcept C2776911258 @default.
- W3024835285 hasConcept C35377427 @default.
- W3024835285 hasConcept C41008148 @default.
- W3024835285 hasConcept C527307 @default.
- W3024835285 hasConcept C57879066 @default.
- W3024835285 hasConcept C62520636 @default.
- W3024835285 hasConcept C80055088 @default.
- W3024835285 hasConcept C99498987 @default.
- W3024835285 hasConceptScore W3024835285C115961682 @default.
- W3024835285 hasConceptScore W3024835285C120665830 @default.
- W3024835285 hasConceptScore W3024835285C121332964 @default.
- W3024835285 hasConceptScore W3024835285C127413603 @default.
- W3024835285 hasConceptScore W3024835285C13393347 @default.
- W3024835285 hasConceptScore W3024835285C154945302 @default.
- W3024835285 hasConceptScore W3024835285C165231844 @default.
- W3024835285 hasConceptScore W3024835285C182748727 @default.
- W3024835285 hasConceptScore W3024835285C196558001 @default.
- W3024835285 hasConceptScore W3024835285C199104240 @default.
- W3024835285 hasConceptScore W3024835285C24890656 @default.
- W3024835285 hasConceptScore W3024835285C2776911258 @default.
- W3024835285 hasConceptScore W3024835285C35377427 @default.
- W3024835285 hasConceptScore W3024835285C41008148 @default.
- W3024835285 hasConceptScore W3024835285C527307 @default.
- W3024835285 hasConceptScore W3024835285C57879066 @default.
- W3024835285 hasConceptScore W3024835285C62520636 @default.
- W3024835285 hasConceptScore W3024835285C80055088 @default.
- W3024835285 hasConceptScore W3024835285C99498987 @default.
- W3024835285 hasLocation W30248352851 @default.
- W3024835285 hasOpenAccess W3024835285 @default.
- W3024835285 hasPrimaryLocation W30248352851 @default.
- W3024835285 hasRelatedWork W1480170400 @default.
- W3024835285 hasRelatedWork W1506459455 @default.
- W3024835285 hasRelatedWork W1587135535 @default.
- W3024835285 hasRelatedWork W1878365526 @default.
- W3024835285 hasRelatedWork W1972373374 @default.
- W3024835285 hasRelatedWork W1989440096 @default.
- W3024835285 hasRelatedWork W2059741953 @default.
- W3024835285 hasRelatedWork W2088960906 @default.
- W3024835285 hasRelatedWork W2108321745 @default.
- W3024835285 hasRelatedWork W2320648233 @default.
- W3024835285 hasRelatedWork W2325566557 @default.
- W3024835285 hasRelatedWork W2351042242 @default.
- W3024835285 hasRelatedWork W3198679268 @default.
- W3024835285 hasRelatedWork W56343829 @default.
- W3024835285 hasRelatedWork W78948302 @default.
- W3024835285 hasRelatedWork W848987564 @default.
- W3024835285 hasRelatedWork W1982176144 @default.
- W3024835285 hasRelatedWork W2197674399 @default.
- W3024835285 hasRelatedWork W230992081 @default.
- W3024835285 hasRelatedWork W231311256 @default.
- W3024835285 isParatext "false" @default.
- W3024835285 isRetracted "false" @default.
- W3024835285 magId "3024835285" @default.
- W3024835285 workType "article" @default.