Results 81 to 90 of about 7,948 (233)
Xibei Gongye Daxue Xuebao, 2019 This paper studies helicopter optimal landing and control procedure after tail rotor control failure (TRCF) in different collective pitch. The optimal control problem of landing after tail rotor control failure was solved numerically by direct multiple ...
doaj +1 more source
Utilising Drones in Agriculture: A Review on Remote Sensors, Image Processing and Their Application
Modern Agriculture, Volume 3, Issue 2, December 2025.The utilisation of drones in agriculture involves the integration of advanced sensing technologies, data analytics and targeted applications. Drones equipped with sensors such as RGB, multispectral and hyperspectral capture diverse spatial and spectral data.
Chetan Yumnam +10 more
wiley +1 more source
Design and Physical Prototyping of a Novel Braking System for a Helicopter Rotor
Designs, 2019 The aim of this paper was to demonstrate the improved functionality and performance of an electromechanical brake for a helicopter main rotor, which to date has been hydraulically actuated using a disc brake and caliper arrangement.
Julian D. Booker +2 more
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RESULTS OF THE FIRST MI-171A2 FLYING LABORATORY TEST PHASE
Научный вестник МГТУ ГА, 2016 The present publication describes the results of the first stage of the flying laboratory (Mi-171 helicopter) flight tests performed at Mil Moscow Helicopter Plant, JSC facilities. Main rotor components with blades made of polymer composite materials and
V. A. Ivchin, K. Y. Samsonov
doaj
Dynamics of helicopter rotor blades
Computers & Structures, 1988 A rotating blade finite element with coupled bending, torsion and axial stretching degrees-of-freedom is developed. APL is used for symbolic manipulations required for the development of the element. The element is implemented in MSC/NASTRAN to generate the numerical results.
Magari, P. J. +2 more
openaire +1 more source
Helicopter brownout - can it be modelled? [PDF]
, 2010 Significant progress has been made to date in modelling, computationally, the formation and development of the dust cloud that forms in the air surrounding the rotorcraft under brownout conditions.
Brown, R.E. +3 more
core
Optimizing performance variables for small unmanned aerial vehicle co-axial rotor systems [PDF]
, 2011 The aim of this project was to design and build a test-rig that is capable of analyzing small unmanned aerial vehicles (SUAV) co-axial rotor systems.
Stephen Prior +5 more
core +1 more source
Effect of rotor stiffness and lift offset on the aeroacoustics of a coaxial rotor in level flight
, 2009 The acoustic characteristics of a twin contra-rotating coaxial rotor configuration with significant flapwise stiffness are investigated in steady forward flight.
Brown, R.E. +5 more
core
Sand Erosion Resistance and Failure Mechanism of Polyurethane Film on Helicopter Rotor Blades. [PDF]
Polymers (Basel), 2023 Zheng L, Fan J, Gong Q, Sun W, Jia X.
europepmc +1 more source
The effect of rotor design on the fluid dynamics of helicopter brownout
, 2009 Helicopters operating close to the ground in dusty environments tend to generate large clouds of dust in the surrounding air. These clouds can obscure the pilot's view of the ground and lead to a dangerous condition known as brownout.
Brown, R.E. +4 more
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