Fluidic Injection for Jet Noise Reduction (Paperback) (ISBN-13: 9781289057589)

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.

Author: Nasa Technical Reports Server (Ntrs),Brenda Henderson
ISBN-10: 1289057583
ISBN-13: 9781289057589
Publisher: Bibliogov
Language: English
Published: 06/27/2013
Pages: 48
Format: Paperback
Weight: 0.23lbs
Size: 9.69h x 7.44w x 0.10d