Advanced Ejector Thrust Augmentation Study - Mass Entrainment of Axisymmetric and Rectangular Free Jets
Abstract
An experimental investigation has been performed to evaluate the entrainment characteristics of nonaxisymmetric (rectangular) primary nozzles for ejector into air application. Data are presented which show the variation in mass entrainment rates of various nozzles as related to isentropic nozzle exit velocity and distance downstream of the nozzle exit. The entrained mass flow is determined by direct measurement for an axisymmetric nozzle and for rectangular nozzles with aspect ratios of 1, 10, 25, and 50. Most of the data presented are for isentropic nozzle exit Mach numbers between about 0.08 and 0.3. Some data are presented for Mach numbers up to about 0.52. All data are for nozzles exhausting into a quicsent atmosphere.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1973
- Accession Number
- AD0776768
Entities
People
- William Peschke
Organizations
- Bell Aircraft Corporation