Results 1 to 10 of about 21,109 (160)
Data-driven analysis and new findings on the loss of tail rotor effectiveness in helicopter accidents [PDF]
Scientific Reports, 2022 Loss of tail rotor effectiveness (LTE) is an unstable dynamic phenomenon that affects single-rotor helicopters and frequently leads to accidents. LTE accidents recur with troubling regularity and show no sign of abatement.
Joseph Homer Saleh +5 more
doaj +2 more sources
Research on Tail Rotor Load Test Flight Technology for Helicopters Based on Strain Sensor Measurement [PDF]
SensorsThe load characteristics of the helicopter tail rotor system are critical to flight safety and handling performance, and flight testing remains the most direct and reliable means to obtain authentic load data.
Shuaike Jiao +3 more
doaj +2 more sources
Main Rotor Wake Interference Effects on Tail Rotor Thrust in Crosswind
International Journal of Aerospace Engineering, 2021 Reverse pedal operational property in front crosswind flight condition is a potential hazard for accidents involving loss of tail rotor effectiveness (LTE), which is closely related to the main rotor (MR) wake interference on the tail rotor (TR).
Chang Wang +4 more
doaj +2 more sources
Helicopter Tail Rotor Thrust and Main Rotor Wake Coupling in Crosswind Flight [PDF]
Journal of Aircraft, 2010 The tail rotor of a helicopter with a single main rotor configuration can experience a significant reduction in thrust when the aircraft operates in crosswind flight. Brown’s vorticity transport model has been used to simulate a main rotor and tail rotor system translating at a sideslip angle that causes the tail rotor to interact with the main rotor ...
Fletcher, Timothy M., Brown, Richard
exaly +4 more sources
Fracture fault analysis of tail rotor on a helicopter
Hangkong gongcheng jinzhan, 2023 Finding out the reason of the fracture fault of tail rotor on a helicopter is of practical significance for using and maintaining the helicopter and is of significant reference for improving safety of new type helicopter. The fracture fault of tail rotor
HOU Bo +3 more
doaj +2 more sources
Generator configuration for helicopter quadruplex electric tail rotor [PDF]
The Journal of Engineering, 2019 With the move to more electric aircraft (MEA), a key area of investigation is the development of commercially viable systems which are reliable, efficient, low mass, and are compatible and commensurate with the power and multiplex requirements of current
Julian D. Booker +3 more
doaj +4 more sources
The influence of helicopter tail rotor parameters on RCS
Hangkong gongcheng jinzhanHigh requirements have been placed on the stealth performance of armed helicopters during wartime missions，in order to reduce the probability of the helicopter being found during the task，based on geometric optics method and consistent diffraction theory，
ZHAO Qijun
doaj +2 more sources
Simulation of Tail Boom Vibrations Using Main Rotor-Fuselage Computational Fluid Dynamics (CFD)
Applied Sciences (Switzerland), 2017 In this work, fully-resolved rotor-fuselage interactional aerodynamics is used as the forcing term in a model based on the Euler-Bernoulli equation, aiming to simulate helicopter tail-boom vibration.
George Barakos, Barakos George N
exaly +3 more sources
Methods for Attenuation of Helicopter [PDF]
فناوری در مهندسی هوافضا, 2023 Helicopters can be a source of loud noise. The high production noise of helicopters makes them unsuitable for densely populated areas, especially in low-flying conditions.
Hamid Parhizkar +2 more
doaj +1 more source
Авіаційно-космічна техніка та технологія, 2021 Under certain conditions of a helicopter flight, the main rotor can exert a rather strong effect on the tail rotor, changing its traction and power characteristics.
Михайло Юрійович Кибальний +3 more
doaj +1 more source