scholarly journals Adhesive quality inspection of wind rotor blades using thermography

2018 ◽  
Author(s):  
Xiaoli Li ◽  
Jiangang Sun ◽  
Jingling Shen ◽  
Xun Wang ◽  
Cunlin Zhang ◽  
...  
Keyword(s):  
Rotor Blades ◽  
Quality Inspection ◽  
Adhesive Quality

Calculating the aerodynamics of vertical axis wind turbines

2012 ◽  
Vol 34 (3) ◽  
pp. 169-184 ◽  
Author(s):  
Hoang Thi Bich Ngoc
Keyword(s):  
Wind Turbine ◽  
Incidence Angle ◽  
Vertical Axis ◽  
Rotor Blades ◽  
Vertical Axis Wind Turbine ◽  
Horizontal Axis Wind Turbine ◽  
Velocity Triangle ◽  
Relationship Of ◽  
The Relationship

Vertical axis wind turbine technology has been applied last years, very long after horizontal axis wind turbine technology. Aerodynamic problems of vertical axis wind machines are discussible. An important problem is the determination of the incidence law in the interaction between wind and rotor blades. The focus of the work is to establish equations of the incidence depending on the blade azimuth, and to solve them. From these results, aerodynamic torques and power can be calculated. The incidence angle is a parameter of velocity triangle, and both the factors depend not only on the blade azimuth but also on the ratio of rotational speed and horizontal speed. The built computational program allows theoretically selecting the relationship of geometric parameters of wind turbine in accordance with requirements on power, wind speed and installation conditions.

Three-Dimensional Strains on Twisted and Swept Composite Rotor Blades in Vacuum

2020 ◽  
pp. 1-16
Author(s):  
Cheng Chi ◽  
Anubhav Datta ◽  
Inderjit Chopra ◽  
Renliang Chen
Keyword(s):  
Three Dimensional ◽  
Rotor Blades

Diagnostics of Flow Suppression on Rotor Blades: Final Report

2009 ◽  
Author(s):  
Narayanan M. Komerath ◽  
Vrishank Raghav ◽  
James DiOttavio
Keyword(s):  
Rotor Blades ◽  
Final Report

Process Approach to Determining Quality Inspection Deployment

2015 ◽  
Author(s):  
Eric S. Richter ◽  
Arthur L. McClellan ◽  
Jack Harrington ◽  
Jeanne Kerr ◽  
Dan Gresham ◽  
...  
Keyword(s):  
Process Approach ◽  
Quality Inspection

FEATURES OF CONSTRUCTION OF ON-BOARD HELICOPTER RADAR ICE EXPLORATION ON BASIS OF CIRCULAR GROUND SURFACE WITH SYNTHESIS OF APERTURE ROTATING ANTENNA

2019 ◽  
pp. 31-37
Author(s):  
I. G. Antсev ◽  
A. P. Aleshkin ◽  
V. V. Vladimirov ◽  
E. O. Kudrina ◽  
O. L. Polonchik ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Ground Surface ◽  
Rotor Blades ◽  
Navigation Systems ◽  
Propeller Blade ◽  
Antenna Aperture ◽  
Sensing System ◽  
Radar Systems ◽  
Simulation Results ◽  
Circular Antenna Array

The results of modeling the processes of receiving and processing the signals of remote sensing of the Earth’s surface using helicopter radar and synthesizing the antenna aperture due to its placement on the rotating rotor blades are presented. The mathematical correctness of the application of the developed algorithms for processing probing signals, as well as the uniqueness of the measurements, was confirmed. At the same time, the dimensions of the synthesized aperture due to the rotation of the radiator placed at the end of the propeller blade are equivalent to a circular antenna array with a diameter of tens of meters. The functionality of the remote sensing system based on this radar meets the requirements for ice observation and navigation systems for seagoing ships off the coast. The simulation results confirm the promise of further research in this direction and can be used in the development of radar systems with synthesized antenna aperture mounted on rotating rotor blades.

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