The choice of geometrical shape of the blades has a considerable effect on aerodynamic performance and flow characteristics in axial compressors. In this paper, the effects of the blades shape on the aerodynamic design characteristics are investigated based on Streamline Curvature Method (SCM). Initially, the Streamline Curvature Method (SCM) is used for designing a two-stage axial compressor. ...

New rotor blades are to be fabricated for the 24 foot diameter, 3-stage axial compressor which provides airflow in the 11by 11-Foot Transonic Wind Tunnel Facility at NASA Ames Research Center in Moffett Field, California. This presents an opportunity to increase the peak Mach number capability of the tunnel by redesigning the compressor for increased pressure ratio. Simulations of the existing ...

A scroll compressor concept is presented which has a very unique method of eliminating the inherent overturning or tipping moment associated with conventional orbiting scrolls. This design is a high~side compressor with axial compliance. An innovative gas discharge path from the involute effectively reduces the height of the assembly. A special offset is placed in the location of the involute, ...

John P. Elson Mgr. New Products The application of scroll compressor technology to the residential air conditioniong and heat pump markets has generated a variety of compressor design approaches to address special system requirements. This paper >till revie>t both special design needs of this application and unique scroll design concepts used to address these needs. Design concept discussions >...

The decision-making process behind the selection of a gas turbine engine (GT) is crucial and must be made in accordance with economic, environmental, technical requirements. This paper presents relevant exergoeconomic exergoenvironmental analyses for four GT engines different compressor configurations. configurations are identified according to type compressor: axial, axial-centrifugal, two-sta...

We show an application of the method of extremum seeking to the problem of maximizing the pressure rise in an axial flow compressor. First we apply extremum seeking to the Moore–Greitzer model and design a feedback scheme actuated through a bleed valve which simultaneously stabilizes rotating stall and surge and steers the system towards the equilibrium with maximal pressure. Then we implement ...