CFD ANALYSIS OF THE EFFECT OF PARABOLIC TAPER DISTRIBUTION OF AN UNTWISTED HELICOPTER ROTOR BLADE
Havacılık ve Uzay Teknolojileri Dergisi, 2018 The effect of parabolic taper distribution along the span of a helicopter rotor blade is analyzed in terms of the rotor thrust, torque and Figure of Merit. Various maximum chord length values are investigated.
Munir Elfarra, Mustafa Kaya
doaj
Optimization methods applied to the aerodynamic design of helicopter rotor blades [PDF]
Described is a formal optimization procedure for helicopter rotor blade design which minimizes hover horsepower while assuring satisfactory forward flight performance.
Bingham, Gene J. +2 more
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AviationThe general objective of this paper is to present the initial results obtained as an outcome of applying a coupled Experimentally Derived – Blade Element Momentum Theory (BEMT) model for evaluating the airflow-defining parameters of a hovering ...
Gabriel Georgiev
doaj +1 more source
A flight investigation of performance and loads for a helicopter with NLR-1T main-rotor blade sections [PDF]
Data on performance and rotor loads for a teetering-rotor, AH-1G helicopter flown with a main rotor that had the NLR-1T airfoil as the blade-section contour are presented. The test envelope included hover, forward-flight speed sweeps from 35 to 85 m/sec,
Morris, C. E. K., Jr. +2 more
core +1 more source
Analysis of stall flutter of a helicopter rotor blade
14th Structures, Structural Dynamics, and Materials Conference, 1973 A study of rotor blade aeroelastic stability was carried out, using an analytic model of a two-dimensional airfoil undergoing dynamic stall and an elastomechanical representation including flapping, flapwise bending and torsional degrees of freedom. Results for a hovering rotor demonstrated that the models used are capable of reproducing both classical
openaire +2 more sources
Surface pressure measurements at two tips of a model helicopter rotor in hover [PDF]
Surface pressures were measured near the tip of a hovering single-bladed model helicopter rotor with two tip shapes. The rotor had a constant-chord, untwisted blade with a square, flat tip which could be modified to a body-of-revolution tip.
Gray, R. B. +3 more
core +1 more source
Conceptual design and optimization of a sustainable and environmentally friendly archetypal helicopter within the selection criteria and limitations. [PDF]
Heliyon, 2023 Gunaltili E +6 more
europepmc +1 more source
Design of mold for helicopter composite rotor blade [PDF]
, 2006 This paper shows CAD/CAM programming technique of mold recess for helicopter main rotor blade. It is necessary to achieve high precision in this process. Due to the dimensions along one of the blade axis, the segmented mold is found necessary. In this paper the programming procedure is shown for one of these mold segments.
Simonović, Aleksandar +1 more
openaire
Dynamic Electromagnetic Scattering Simulation of Tilt-Rotor Aircraft in Multiple Modes. [PDF]
Sensors (Basel), 2023 Fei Z, Yang Y, Jiang X, Zhao Q, Chen X.
europepmc +1 more source
Advancing-side directivity and retreating-side interactions of model rotor blade-vortex interaction noise [PDF]
Acoustic data are presented from a 40 percent scale model of the four-bladed BO-105 helicopter main rotor, tested in a large aerodynamic wind tunnel.
Elliott, J. W. +3 more
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