EXPERIMENTAL INVESTIGATION OF HOVERING PERFORMANCE OF A TWIN-ROTOR TEST MODEL

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Shahmiri Farid

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Seminar Paper

Paper Information

Seminar: CONFERENCE OF IRANIAN AEROSPACE SOCIETY
Year:2015 | Issue:14

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Title

EXPERIMENTAL INVESTIGATION OF HOVERING PERFORMANCE OF A TWIN-ROTOR TEST MODEL

Author(s)

Shahmiri Farid

Keywords

TWIN

ROTOR

CENTRAL COMPOSITE DESIGN

HOVERING PERFORMANCE

INTERACTIONS

Abstract

HOVER PERFORMANCE OF A TWIN-ROTOR TEST MODEL IN TERMS OF ROTOR OVERLAP SWEEP, BLADE COLLECTIVE PITCH ANGLE, AND ROTOR ROTATIONAL SPEED WAS ESTIMATED. THE TEST MODEL CONSISTED TWO THREE-BLADED ROTORS WITH A DIAMETER OF 1220MM AND CONSTANT CHORD OF MM, GIVING A BLADE ASPECT RATIO OF 16.05. THE BLADES WERE RECTANGULAR PLANFORM WITH CROSS&NBSP;NACA0012 SECTIONS MADE OF COMPOSITE CARBON FIBER AND HAD NO TWIST OR TAPER. IN THIS MODEL, THE REAR ROTOR WAS FIXED ON THE FUSELAGE AND THE FRONT ROTOR COULD MOVE LONGITUDINALLY FOR TESTS UP TO 40% ROTOR OVERLAP SWEEP. THE TEST PLAN WAS PREPARED BASED ON CENTRAL COMPOSITE DESIGN (CCD)&NBSP;THAT WAS FOUND AS A LOW COST EXPERIMENTAL DESIGN METHOD. THE MATHEMATICAL EXPRESSIONS OF THRUST AND POWER REQUIRED SHOWED THAT OPTIMAL PERFORMANCE (I.E., MINIMUM POWER REQUIRED AT MAXIMUM THRUST) CAN BE OBTAINED FOR NON-OVERLAP ROTORS AT 11.5&NBSP;COLLECTIVE PITCH AND RPM.

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APA: Copy

Shahmiri, Farid. (2015). EXPERIMENTAL INVESTIGATION OF HOVERING PERFORMANCE OF A TWIN-ROTOR TEST MODEL. CONFERENCE OF IRANIAN AEROSPACE SOCIETY. SID. https://sid.ir/paper/945735/en

Vancouver: Copy

Shahmiri Farid. EXPERIMENTAL INVESTIGATION OF HOVERING PERFORMANCE OF A TWIN-ROTOR TEST MODEL. 2015. Available from: https://sid.ir/paper/945735/en

IEEE: Copy

Farid Shahmiri, “EXPERIMENTAL INVESTIGATION OF HOVERING PERFORMANCE OF A TWIN-ROTOR TEST MODEL,” presented at the CONFERENCE OF IRANIAN AEROSPACE SOCIETY. 2015, [Online]. Available: https://sid.ir/paper/945735/en

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