The air intake-compression systems of modern aircraft usually use the aero-engine intake and fan/compressor as the main components. Inlet-engine compatibility has always been the key to the stable and safe operation of thepropulsion system, including the influence of inlet distortion on thecompressor...
Riccati equationimpedance matrixmodal scattering propertiesThe paper is concerned with the measurement of the random pressure fluctuations on the rotating blades of a low pressure axial fan. The force fluctuations due to the pressure fluctuations are the d...
The evolution of the impact force, energy absorption, temperature rise and the crack propagation are analyzed. It is worth mentioning that the thermal/aerodynamic effects on the casing containment may be also important, especially for the high-pressure compressor casing. In the current study, the ...
Figure 25 shows that under the NZHC, the flow rate of the pump system is large, the angle between the relative velocity of the liquid flow and the circumferential direction is increased, and the blade angle is not changed, resulting in a decrease in the blade airfoil angle. There is ...
Leading Edge Thicker portion of the airfoil that is the first part of the blade to meet the air. Net Free Area Net area at the plane of the fan through which all air must pass. Usually based on the nominal fan diameter minus seal disc area or hub diameter. Note that blade area is ...
The pumping or propulsion device of the present invention, however, uses multiple rotor-stator stages that include geometrically efficient blades and vanes, e.g., an airfoil shape, to minimize internal drag and to successively increase static pressure of the working fluid at each stage of the dev...
Through the radial momentum equation, this radial force variation is responsible for creating the streamline curvature that leads to the expansion of the streamtube (slipstream) that is responsible for slowing the wind velocity ahead of the wind turbine leading edge, which is quantified as the ...
Through the radial momentum equation, this radial force variation is responsible for creating the streamline curvature that leads to the expansion of the streamtube (slipstream) that is responsible for slowing the wind velocity ahead of the wind turbine leading edge, which is quantified as the ...
As the turbojet engine gradually change to a high BPR engine (using new fan), some portions of fan exit station with very low total pressure (near to hub section) have destructive effect on cold thrust force. On the other hand, flow entering the core of engine has very low pressure ...
To take into account the three-dimensional rotational effect, the 2D airfoil data is modified by the Du-Selig stall-delay model [20]. 2.2. Near Wake Model The wake that extends downstream from the blade is divided into two parts: the near wake and the far wake (Figure 1b). The near ...