Results 11 to 20 of about 564,776 (415)
Free flight wind tunnel test similarity law derivation for light store separation from aircraft
Advances in Mechanical Engineering, 2019 Based on the linear displacement motion similarity and angular displacement motion similarity, the similarity law for free flight test of light store separation from aircraft is deduced.
Fei Xue +5 more
doaj +2 more sources
Photogrammetry applied to wind-tunnel testing [PDF]
AIAA Journal, 2000 In image-based measurements, quantitative image data must be mapped to three-dimensional object space. Analytical photogrammetric methods, which may be used to accomplish this task, are discussed from the viewpoint of experimental fluid dynamicists.
Tianshu Liu +3 more
+5 more sources
, 2001 The primary objective of the insteady aerodynamics experiment was to provide information needed to quantify the full-scale, three-dimensional aerodynamic behavior of horizontal-axis wind turbines.
M. Hand +6 more
semanticscholar +2 more sources
Boundary layer wind tunnel tests of outdoor airflow field around urban buildings: A review of methods and status [PDF]
E3S Web of Conferences, 2022 Outdoor airflow fields have received increasing attention in the building aerodynamics community due to that the airflow distributions around outdoor buildings are closely related to issues such as thermal comfort, building ventilation, and pollutant ...
Zhao Yi +4 more
doaj +1 more source
A New Algorithm on Automatic Trimming for Helicopter Rotor Aerodynamic Loads
Aerospace, 2023 In order to simulate the flight state of the helicopter effectively, it is necessary to trim the helicopter during the forward flight in a wind tunnel test.
Xinfan Yin +5 more
doaj +1 more source
Gust Alleviation and Wind Tunnel Test by Using Combined Feedforward Control and Feedback Control
Aerospace, 2022 Gust alleviation is of great significance for improving aircraft ride quality and reducing gust load. Using aircraft response (feedback control) and gust disturbance information (feedforward control) to improve the gust alleviation effect is worthy of ...
Yitao Zhou, Zhigang Wu, Chao Yang
semanticscholar +1 more source
Aerodynamic Characteristics Analysis of Iced Conductor Based on BP Neural Network
Buildings, 2022 Major disasters and losses would be caused by the galloping of transmission lines. The basis for studying the galloping mechanism of transmission lines is to analyze the aerodynamic characteristics of iced conductors.
Junhao Liang +6 more
doaj +1 more source
Performance analysis of control allocation using data‐driven integral quadratic constraints
Advanced Control for Applications, Volume 4, Issue 4, December 2022., 2022 Abstract A new method is presented for evaluating the performance of a nonlinear control allocation system within a linear control loop. To that end, a worst‐case gain analysis problem is formulated that can be readily solved by means of well‐established methods from robustness analysis using integral quadratic constraints (IQCs).
Manuel Pusch +2 more
wiley +1 more source
Applied Sciences, 2020 To investigate the spray atomization characteristics of aerial nozzles adapted to manned agricultural helicopters under medium-low airflow velocity (0 to 27.8 m/s) conditions, the droplet size test was carried out in both wind tunnel and field tests.
Weixiang Yao +6 more
doaj +1 more source
Convergence of transonic wind tunnel test results of the AGARD-B standard model
FME Transaction, 2020 AGARD-B is a widely-used configuration of a standard wind tunnel model. Beside its originally intended application for correlation of data from supersonic wind tunnel facilities, it was tested in a wide range of Mach numbers and, more recently, used for ...
Dijana Damljanović +3 more
semanticscholar +1 more source