Effect of heat and power extraction on turbojet-engine performance. 4 - Analytical determination of effects of hot-gas bleed /

In general, with a turbojet engine operating at constant engine speed, bleeding gas from the tail pipe at constant tail-pipe-nozzle area and reduced turbine-inlet temperature caused 2.5 to 4 times as great a loss in thrust as bleeding gas at constant turbine-inlet temperature and reduced tail-pipe-nozzle area.Generalized working charts are presented with which the performance of a turbojet engine operating with tail-pipe gas bleed can be determined. From these generalized working charts, the performance of an engine operating with tail-pipe gas bleed at several typical flight conditions and modes of engine operation is calculated. A method of determing the performance of a turbojet engine with turbine-inlet bleed from the performance with compressor-outlet bleed is also given.NACA TN No. 2304."March 1951."In general, with a turbojet engine operating at constant engine speed, bleeding gas from the tail pipe at constant tail-pipe-nozzle area and reduced turbine-inlet temperature caused 2.5 to 4 times as great a loss in thrust as bleeding gas at constant turbine-inlet temperature and reduced tail-pipe-nozzle area.Generalized working charts are presented with which the performance of a turbojet engine operating with tail-pipe gas bleed can be determined. From these generalized working charts, the performance of an engine operating with tail-pipe gas bleed at several typical flight conditions and modes of engine operation is calculated. A method of determing the performance of a turbojet engine with turbine-inlet bleed from the performance with compressor-outlet bleed is also given.Mode of access: Internet