Author: Paul R. KnottPublisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 252
Book Description
Acoustic and Aerodynamic Performance Investigation of Inverted Velocity Profile Connualar Plug Nozzles
Author: Paul R. KnottPublisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 252
Book Description
Acoustic and Aerodynamic Performance Investigation of Inverted Velocity Profile Connualar Plug Nozzles
Author: Paul R. KnottPublisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 272
Book Description
Acoustic and Aerodynamic Performance Investigation of Inverted Velocity Profile Coannular Plug Nozzles
Author: P. R. KnottAerodynamic and Acoustic Investigation of Inverted Velocity Profile Coannular Exhaust Nozzle Models and Development of Aerodynamic and Acoustic Prediction Procedures
Author: Richard S. LarsonPublisher:
ISBN:
Category : Exhaust nozzles
Languages : en
Pages : 228
Book Description
Monthly Catalog of United States Government Publications
Author: Flight Effects on the Aerodynamic and Acoustic Characteristics of Inverted Profile Coannular Nozzles
Author: Hilary KozlowskiPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 204
Book Description
Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 876
Book Description
Investigation of Coannular Nozzles with Conventional and Inverted Velocity Profiles
Author: Publisher:
ISBN:
Category : Jet planes
Languages : en
Pages : 127
Book Description
The results of the investigation of the noise characteristics of the exhaust jets from coannular nozzles with conventional and inverted velocity profiles are presented. Experiments were carried out on a series of coannular nozzles of equal primary and secondary area. The majority of acoustic tests were carried out holding either the total thrust or the total mass flow constant while varying the rates of secondary velocity to primary velocity. A limited number of tests were also made simulating the takeoff, cutback and approach conditions of the JT8D engine and corresponding inverted conditions. The results of this study show that at high thrust level the coannular flows with inverted velocity profiles are quieter than those with standard velocity profiles at the same thrust and the same mass flow. The acoustic differences are much greater when the velocity ratio is produced by differences in the stagnation temperature rather than by differences in the stagnation pressure. (Author).
Static Aerodynamic Performance Investigation of a Fluid Shield Nozzle
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781721002986
Category :
Languages : en
Pages : 74
Book Description
In pursuit of an acoustically acceptable, high performance exhaust system capable of meeting Federal Aviation Regulation 36 Stage 3 noise goals for the High Speed Civil Transport application, General Electric Aircraft Engines conducted a design study to incorporate a fluid shield into a 36-chute suppressor exhaust-nozzle system. After a full scale preliminary mechanical design of the resulting fluid shield exhaust system, scale model aerodynamic performance tests and acoustic tests were conducted to establish both aerodynamic performance and acoustic characteristics. Data are presented as thrust coefficients, discharge coefficients, chute-base pressure drags, and plug static pressure distributions.Balan, C. and Askew, J. W.Glenn Research CenterCIVIL AVIATION; EXHAUST NOZZLES; AERODYNAMIC CHARACTERISTICS; AIRCRAFT ENGINES; MECHANICAL ENGINEERING; SHIELDING; FLUID FLOW; STATIC PRESSURE; DATA REDUCTION; THRUST; PLUGS; PRESSURE DISTRIBUTION; NOZZLE FLOW; NOISE REDUCTION
Author: