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Case IH 7140 rotary harvester with corn header with cutaway showing rotary threshing mechanism. Case IH axial-flow combines (also known as rotary harvesters) are a type of combine harvester that has been manufactured by International Harvester, and later Case International, Case Corporation, and CNH Global, used by farmers to harvest a wide range of grains around the world.
A gas turbine or gas turbine engine is a type of continuous flow internal combustion engine. [1] The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the direction of flow: a rotating gas compressor; a combustor; a compressor-driving turbine.
The modern combine harvester, also called a combine, is a machine designed to harvest a variety of cultivated seeds. Combine harvesters are one of the most economically important labour-saving inventions, significantly reducing the fraction of the population engaged in agriculture. [ 1 ]
One of AxSTREAM's features is high integration of all software components, which allows users to combine separate phases of design to create a single processing chain. Having designed a flow path, AxSTREAM can export the resulting geometry to CAD/CAE systems (e.g. UGS, Pro-E, SolidWorks, Fluent, AutoCAD, ANSYS CFX, NUMECA etc.).
V f = flow velocity (axial component in case of axial machines, radial component in case of radial machines). The following angles are encountered during the analysis: α = absolute angle is an angle made by V with the plane of the machine (usually the nozzle angle or the guide blade angle) i.e. angle made by absolute velocity V and the ...
Turbojet engines or other gas turbines, using axial-flow through a multi-stage compressor. These allow a higher overall pressure ratio than a centrifugal compressor, but are more complex to design. Subcategories
In the axial compressor the air flows parallel to the axis of rotation. Axial compressors are made to be multi-staged. A stage consists of a row of rotating blades called the rotor, which are connected to the central shaft and a row of stationary or fixed blades called stator. In axial flow compressor, the air flows from stage to stage.
Compressor surge is a particular problem during slam-accelerations and can be overcome by suitable adjustments to the fueling schedule and/or use of blow-off (bleeding air off the compressor, for handling purposes). In the particular example shown, a slam-acceleration from ground idle would cause a high-pressure compressor surge.