...Firat Sal Purpose This paper aims to offer a simultaneous design approach for helicopter having swept anhedral blade tip shape and helicopter flight control system (HFCS) to minimize controller cost. Design/methodology/approach By considering previously stated offer, control-oriented models...

...Mehmet Konar; Aydin Turkmen; Tugrul Oktay Purpose The purpose of this paper is to use an ABC algorithm to improve the thrust–torque ratio of a rotating-wing unmanned aerial vehicle (UAV) model. Design/methodology/approach The design of UAVs, such as aircraft, drones, helicopters, has become...

...Firat Sal Purpose The purpose of this paper presents the effects of actively morphing root chord and taper on the energy of the flight control system (i.e. FCS). Design/methodology/approach Via regarding previously mentioned purposes, sophisticated and realistic helicopter models...

...Firat Sal Purpose The purpose of this study is to examine the effect of passive and active morphing of blade root chord length and blade taper on the control effort of the flight control system (FCS) of a helicopter. Design/methodology/approach Physics-based helicopter models, which...

...Florian Knoth; Christian Breitsamter Purpose Aerodynamic characteristics of engine side air intakes for a lightweight helicopter are investigated aiming to achieve an efficient engine airframe integration. Design/methodology/approach On a novel full-scale model of a helicopter fuselage section...

... Emerald Group Publishing Limited 2016 Emerald Group Publishing Limited Licensed re-use rights only Helicopters High speed flight Lift offset A = disk area, m²; A_s = sine amplitude of the lift coefficient, nd...

...Tugrul Oktay; Cornel Sultan Purpose The purpose of this paper is to show the feasibility of constrained model predictive control (MPC) for sophisticated helicopter models which are derived by physical considerations. Design/methodology/approach Physics‐based modeling is used to create control...

...Emanuele Piccione; Giovanni Bernardini; Massimo Gennaretti Purpose The purpose of this paper is to present the development and application of a numerical formulation for the structural dynamics and aeroelastic analysis of new generation helicopter and tiltrotor rotor blades...

... of an aeroelastic system based on condition number (CN) of aeroelastic FRF matrix or directly from FRFs data. Findings Stability margins of typical section and hingeless helicopter rotor blade in the subsonic flow regimes (quasi‐steady and unsteady models) are determined using proposed techniques as two case...

... by rotor pitching or rolling rate significantly changes the rotor off‐axis response. Research limitations/implications This method should be further validated using experimental measurements of full‐scale helicopter rotors. Originality/value The paper presents a new time‐marching free‐vortex wake...

... in predicting many of the aerodynamic performance characteristics (Smith et al., 2006). Automation Helicopters Air transport engineering Design Aerofoil characteristics Rotorcraft design Rotor blades design Symbol M=Mach number Re=Reynolds number α=angle...

...Ismaila B. Tijani; Rini Akmeliawati; Ari Legowo; Agus Budiyono; A.G. Abdul Muthalif Purpose The purpose of this paper is to present the synthesis of a robust controller for autonomous small‐scale helicopter hovering control using extended H_∞ loop shaping design techniques...

...Jungguk Kim; Agus Budiyono; Dong‐Min Kim; Ho‐Geun Song; Doo‐Hyun Kim Purpose The purpose of this paper is to introduce a new danger‐aware Operational Flight Program (OFP) for the unmanned helicopter's auto‐navigation based on the well‐known time‐triggered message‐triggered object (TMO) model...

.../methodology/approach The vertical takeoff and landing capabilities of a helicopter are particularly important. The need for efficient hover and the effectiveness of forward flight in the helicopter can cause conflicts within the design process. The designers usually wish to increase the helicopter's maximum...

...Endra Joelianto; Edwina Maryami Sumarjono; Agus Budiyono; Dini Retnaning Penggalih Purpose The purpose of this paper is to investigate the feasibility of controlling a small‐scale helicopter by using the model predictive control (MPC) method. Design/methodology/approach The MPC control...

... helicopter. Design/methodology/approach In order to meet the time constraints and enhance control application performance, two major improvements were done at real‐time operating system (RTOS) kernel. They are thread scheduling algorithm and lock‐free thread message communication mechanism. Both of them...

...M. Vijaya Kumar; P. Sampath; S. Suresh; S.N. Omkar; Ranjan Ganguli Purpose This paper seeks to present a feedback error learning neuro‐controller for an unstable research helicopter. Design/methodology/approach Three neural‐aided flight controllers are designed to satisfy the ADS‐33 handling...

.... This paper aims to describe the process of generating a specific framework for helicopter design and manufacturing in general, and a method for main rotor blade design. Design/methodology/approach The e‐design process integrates a pre‐conceptual, conceptual and preliminary design phases and includes many...

...Hardian Reza Dharmayanda; Agus Budiyono; Taesam Kang Purpose The purpose of this paper is to design a model‐based robust controller for autonomous hovering of a small‐scale helicopter. Design/methodology/approach The model is developed using prediction error minimization (PEM) system...

...Agus Budiyono; Idris E. Putro; K. Yoon; Gilar B. Raharja; G.B. Kim Purpose The purpose of this paper is to develop a real‐time simulation environment for the validation of controller for an autonomous small‐scale helicopter. Design/methodology/approach The real‐time simulation platform...