EFFECT OF AIR DISTRIBUTION ON RADIAL TEMPERATURE DISTRIBUTION IN ONE-SIXTH SECTOR OF ANNULAR TURBOJET COMBUSTOR

摘要

As part of a program conducted to determine a method of con-trolling radial exhaust-gas-temperature distribution in a gas-turbine combustion chamber, an experimental investigation was made in a one-sixth sector of an annular turbojet combustor. A partic¬ular design method of controlling the radial variation of the com¬bustor exhaust-gas temperature was studied. The method chosen consisted in adjusting the radial distribution of secondary or dilution air entering the combustion zone. This adjustment was achieved by one or both of two methods:(l) by ducting the dilu¬tion air into the combustion zone in a predetermined manner through hollow radial struts, or (2) by modifying the basket-wall open-hole area.nThe combustor modifications investigated consisted of combi¬nations of design modifications in three principal sections of the combustor:(l) the primary-zone basket wall, (2) the secondary-zone basket wall, and (3) the hollow radial struts.