Accession Number : AD0752207

Title :   Experiments with Hypermixing Nozzles in an Area Ratio 23 Ejector.

Descriptive Note : Final rept.,

Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Quinn,Brian

Report Date : JUN 1972

Pagination or Media Count : 47

Abstract : The performance of an inlet area ratio A1/A0 = 23 ejector has been measured at pressure ratios between one and 1.3. No substantial pressure ratio effects were observed over this range. While the inlet conditions were fixed, four different combinations of mixing duct lengths and diffuser lengths were tested. The data indicate an advantage in apportioning most of the total length of the ejector to the diffuser. The longer constant area mixing ducts appeared to degrade ejector performance. Each of the four configurations exhibited the same trend: a general increase in augmentation ratio as the diffuser exit area increased. This tendency persisted up to the diffuser angle at which the diffuser stalled. Thereafter, the performance dropped abruptly. (Author)

Descriptors :   (*THRUST AUGMENTOR NOZZLES, *NOZZLE GAS FLOW), THRUST AUGMENTATION, NOZZLE AREA RATIO, FLOW SEPARATION, FLOW FIELDS, JET MIXING FLOW, EXHAUST DIFFUSERS, EXPERIMENTAL DATA

Subject Categories : Fluid Mechanics
      Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE