Results 11 to 20 of about 6,631,530 (188)
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
The effect of helicopter configuration on the fluid dynamics of brownout [PDF]
, 2008 Brown’s Vorticity Transport Model, coupled to an additional particle transport model, is used to simulate the development of the dust cloud that can form around a helicopter when operating in dusty or desert conditions.
Brown, R.E. +3 more
core +13 more sources
Interactional aerodynamics and acoustics of a hingeless coaxial helicopter with an auxiliary propeller in forward flight [PDF]
, 2008 The aerodynamics and acoustics of a generic coaxial helicopter with a stiff main rotor system and a tail- mounted propulsor are investigated using Brown's Vorticity Transport Model.
Brown, R.E. +7 more
core +10 more sources
Design and hardware-in-the-loop test of the embedded control system of an indoor quadrotor helicopter [PDF]
, 2008 The paper deals with the quick prototype design and hardware-in-the-loop real-time test of the embedded control system of an indoor miniature quadrotor helicopter (UAV) before first flight.
Lantos, Béla +5 more
core +2 more sources
Helicopter crashworthiness: a chronological review of research related to water impact from 1982 to 2006 [PDF]
, 2008 This paper discusses in detail the contributions made in the field of water impact from 1982 to 2006 and provides a summaryof the major theoretical, experimental, and numerical accomplishments, up to and including the latest present-day Europeanprograms ...
Hughes, Kevin, Campbell, James C.
core +1 more source
IEEE Access, 2021 To solve the problem that the trajectory tracking control system of the unmanned helicopter is limited by the accuracy of the physical model (parameters and dynamic characteristics) and external disturbance of the unmanned helicopter, this paper designs ...
Suiyuan Shen, Jinfa Xu
doaj +1 more source
Авіаційно-космічна техніка та технологія, 2018 Today, Motor Sich JSC is developing its helicopter production. At the same time, great attention is paid to the creation of an infrastructure that should provide a full cycle of development and testing of new and modernized helicopter assemblies.
Нина Николаевна Лопунова +1 more
doaj +1 more source
Development and Application of Special Extinguishing Agent Concentration Measurement
Hangkong gongcheng jinzhan, 2020 It is necessary to measure the situation of extinguishing agent concentration along with time in the ground simulation test of helicopter/airplane powerplant.
WU Yanyan +5 more
doaj +1 more source
The flow physics of helicopter brownout [PDF]
, 2010 The formation of the dust cloud that is associated with low-level helicopter operations in desert environments has been simulated using the Vorticity Transport Model together with a coupled model to represent the entrainment and subsequent transport of ...
Brown, R.E. +2 more
core +3 more sources
Analysis of rotor aeroelastic loads during control ramp increase of helicopter
Hangkong gongcheng jinzhanSince ramp control is the most prevalent control method in complex helicopter maneuvering scenarios, investigating rotor loads during control ramp increase holds significant guiding importance.
SHAN Yiming +3 more
doaj +1 more source