Results 31 to 40 of about 3,999 (214)
Fuzzy Logic Controller for a Mini Coaxial Indoor Helicopter
Journal of Intelligent & Robotic Systems, 2011 In this paper the design process of a fuzzy logic based controller for a coaxial micro helicopter is presented. The developed controller for altitude, attitude, and position control is tested through simulations on an identified non-linear model of the helicopter.
Τσουρβελουδης Νικολαος(http://users.isc.tuc.gr/~ntsourveloudis) +2 more
openaire +2 more sources
Wind Tunnel Studies on Hover and Forward Flight Performances of a Coaxial Rigid Rotor
Aerospace, 2021 The aerodynamic performance of a reduced-scale coaxial rigid rotor system in hover and steady forward flights was experimentally investigated to gain insights into the effect of interference between upper and lower rotors and the influences of the ...
Chang Wang +5 more
doaj +1 more source
Numerical Study of Coaxial Main Rotor Aerodynamics in Steep Descent
Aerospace, 2022 Numerical studies of the aerodynamic characteristics of the coaxial main rotor of the Kamov Ka-32 helicopter in steep descent modes, including the area of the vortex ring state (VRS) modes, have been performed.
Pavel Makeev +2 more
doaj +1 more source
A flight dynamics investigation of compound helicopter configurations [PDF]
, 2013 Compounding has often been proposed as a method to increase the maximum speed of the helicopter. There are two common types of compounding known as wing and thrust compounding.
Ferguson, K., Thomson, D.
core
Advanced Intelligent Systems, Volume 8, Issue 3, March 2026.This review systematically analyzes deformable drones, including extendable, foldable, and tilting configurations, along with nature‐inspired flapping rotorcraft. By classifying deformation principles and structural mechanisms, design trade‐offs, functional capabilities, and future development potential are highlighted.
Ju‐Hee Lee +9 more
wiley +1 more source
Научный вестник МГТУ ГА, 2018 The efficiency of the helicopter main rotor in the hover mode is very important, because this mode essentially determines the performance characteristics of the helicopter.
Y. M. Ignatkin +2 more
doaj +1 more source
Real-time evolution of an embedded controller for an autonomous helicopter [PDF]
, 2008 In this paper we evolve the parameters of a proportional, integral, and derivative (PID) controller for an unstable, complex and nonlinear system. The individuals of the applied genetic algorithm (GA) are evaluated on the actual system rather than on a ...
Coupland, Simon +3 more
core +2 more sources
Near Surface Geophysics, Volume 23, Issue 4, Page 310-323, August 2025.Abstract Extensive pumping, storm floods or sea‐level rise can lead to regional and local‐scale processes of saltwater intrusion into coastal aquifers. Particularly when exacerbated by the impacts of climate change, these processes can threaten freshwater resources and thus drinking water supplies and need to be prevented by investigation and ...
Mathias Ronczka +5 more
wiley +1 more source
Performance and Vibration Analyses of Lift-Offset Helicopters
International Journal of Aerospace Engineering, 2017 A validation study on the performance and vibration analyses of the XH-59A compound helicopter is conducted to establish techniques for the comprehensive analysis of lift-offset compound helicopters.
Jeong-In Go, Do-Hyung Kim, Jae-Sang Park
doaj +1 more source
Unmanned Helicopter Type Aircraft for the Pesticides and Fertilizers Application
Сельскохозяйственные машины и технологии, 2020 Digital agricultural production is based on robotic agricultural technologies for the use of pesticides and fertilizers using unmanned aerial systems, which are based on unmanned aerial vehicles for monitoring agricultural land, the pesticides ...
L. A. Marchenko +4 more
doaj +1 more source