Fluidic Injection For Jet Noise Reduction

by Nasa Technical Reports Server (ntrs)

2021-01-13 22:52:12

Investigations into fluidic injection for jet noise reduction began over 50 years ago. Studies have included water and air injection for the reduction of noise in scale model jets and jet engines and water injection for the reduction of excess overpr... Read more
Investigations into fluidic injection for jet noise reduction began over 50 years ago. Studies have included water and air injection for the reduction of noise in scale model jets and jet engines and water injection for the reduction of excess overpressures on the Space Shuttle at lift-off. Injection systems have included high pressure microjets as well as larger scale injectors operating at pressures that can be achieved in real jet engines. An historical perspective highlighting noise reduction potential is presented for injection concepts investigated over the last 50 years. Results from recent investigations conducted at NASA are presented for supersonic and subsonic dual-stream jets. The noise reduction benefits achieved through fluidic contouring using an azimuthally controlled nozzle will be discussed. Less

Book Details

File size9.69 X 7.44 X 0.1 in
Print pages48
PublisherBiblioGov
Publication date June 27, 2013
LanguageEnglish
ISBN9781289057589

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