The aerodynamic performance analysis and blade planform design of a coaxial here rigid rotor in forward flight were carried out utilizing CFD solver CLORNS.Firstly, the forward flow field characteristics of the coaxial rotor were analyzed.Shock-induced separation occurs at the advancing side blade tip and severe reverse flow occurs at the retreatin
In this paper we poise pads in bulk propose a method for monitoring and evaluating the development and early education of children under the age of six by using historical and cultural heritage objects.We begin with outlining several problems identified in our research and then describe the internals of our method.Last, we define an architecture fo
Personalized news recommendation is an important technology to help users obtain the news information they are interested in and alleviate information overload.In recent years, with the development of information technology and society, personalized news recommendation has been increasingly widely studied, and has achieved remarkable success in loc
In a smoke environment, ethical nutrients mega magnesium powder citrus 450g suspended particles can scatter and absorb laser photons, making target echo signals extremely weak and difficult to extract and identify, which causes obvious difficulty in fixed-distance of laser fuze.In this paper, the multiple scattering model of frequency-modulated-con
Introduction Unstructured use of motor vehicles has created many social problems especially in large cities.Heavy traffic, fatal accidents, obesity and less mobility, voice pollution, air pollution, physical harms such as headache, eye sting, respiratory diseases, heart diseases, some cancers and finally increasing of consumption of the fossil fuel