Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   FEBRUARY 2017 , Volume 16 , Number 11 ; Page(s) 449 To 452.
 
Paper: 

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

 
 
Author(s):  NADERI ALIREZA*, AFSHARI REZA
 
* AEROSPACE RESEARCH INSTITUTE, MALEK-ASHTAR UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN
 
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.

 
Keyword(s): HELICOPTER MAIN BLADE TIP GEOMETRY, VORTEX WAKE, VORTICAL FLOWS, TRANSONIC SHOCK, NUMERICAL SIMULATION
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 57
 
Latest on Blog
Enter SID Blog