NUMERICAL INVESTIGATION OF DIFFERENT HELICOPTER MAIN BLADE TIP GEOMETRY ON AERODYNAMIC COEFFICIENTS AND ROTOR VORTICAL EFFECTS

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NADERI ALIREZA; AFSHARI REZA

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Modares Mechanical Engineering Year:2017 | Volume:16 | Issue:11 Page(s): 449-452

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Title

NUMERICAL INVESTIGATION OF DIFFERENT HELICOPTER MAIN BLADE TIP GEOMETRY ON AERODYNAMIC COEFFICIENTS AND ROTOR VORTICAL EFFECTS

Author(s)

NADERI ALIREZA | AFSHARI REZA | Issue Writer Certificate

Keywords

HELICOPTER MAIN BLADE TIP GEOMETRYQ1

VORTEX WAKEQ1

VORTICAL FLOWSQ1

TRANSONIC SHOCKQ1

NUMERICAL SIMULATIONQ2

Abstract

In this article, the effects of helicopter main rotor blade tip geometric shapes on the aerodynamic of hover flight are analyzed. Aerodynamic coefficients, VORTICAL FLOWS and VORTEX WAKEs are discussed.Fluent software with implicit finite volume method has been used for NUMERICAL SIMULATION process. The grids are structured. Experimental results of the Caradonna and Tung have been used for aerodynamic validations. In this investigation, the flow has been considered turbulent, compressible, and viscous. The results of several RANS models for a specific rotor have been compared and the standard k-e turbulent model is finallyselected. The Roe method with second order scheme was selected. Thirteen different geometrical shapes on the tip of the blades have been presented and the results of the models have been compared. These studies show that the blades of BERP IV, Blue edge, Actual, Bell-214 and BERP III produce maximum thrust and MIL-17, Sikorsky RH-53D, Tapered, Bell-412, Sikorsky SH-3D and ComancheRAH-66 produce minimum torque and also the blades of BERP III and IV, Ogee and Bell-214 produce maximumtorque.

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APA: Copy

NADERI, ALIREZA, & AFSHARI, REZA. (2017). NUMERICAL INVESTIGATION OF DIFFERENT HELICOPTER MAIN BLADE TIP GEOMETRY ON AERODYNAMIC COEFFICIENTS AND ROTOR VORTICAL EFFECTS. MODARES MECHANICAL ENGINEERING, 16(11 ), 449-452. SID. https://sid.ir/paper/178904/en

Vancouver: Copy

NADERI ALIREZA, AFSHARI REZA. NUMERICAL INVESTIGATION OF DIFFERENT HELICOPTER MAIN BLADE TIP GEOMETRY ON AERODYNAMIC COEFFICIENTS AND ROTOR VORTICAL EFFECTS. MODARES MECHANICAL ENGINEERING[Internet]. 2017;16(11 ):449-452. Available from: https://sid.ir/paper/178904/en

IEEE: Copy

ALIREZA NADERI, and REZA AFSHARI, “NUMERICAL INVESTIGATION OF DIFFERENT HELICOPTER MAIN BLADE TIP GEOMETRY ON AERODYNAMIC COEFFICIENTS AND ROTOR VORTICAL EFFECTS,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 11 , pp. 449–452, 2017, [Online]. Available: https://sid.ir/paper/178904/en

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