Experimental Investigation ofthe Hovering Performance of aTwin-Rotor Test Model

Farid Shahmiri

Volume 10, Issue 2 , September 2013

Abstract
  Hover performance of a twin-rotor test model in terms of rotor overlap sweep, blade collective pitch, and blade tip speedwasexaminedexperimentally.The experimental setup consisted of two three-bladed rotors (tandem rotor configuration) with a diameter of1,220 mm and constant chord of 38 mm, giving a ...  Read More

Rotor Sizing of Helicopters Using Statistical Approach

فرید شاهمیری

Volume 10, Issue 1 , March 2013

Abstract
  This paper is concerned with the statistical model development issues, necessary for rapid estimation of the rotor sizing for single main rotor helicopters at the preliminary design stage. However, Central Composite Design (CCD) method, simulation-based data collection, linear regression analysis, mathematical ...  Read More