In this paper, an attempt was made to obtain the aerodynamic performance of a Hex-rotor unmanned aerial vehicle with different rotor spacing.The hover efficiency of the Hex-rotor unmanned aerial vehicle is Pitcher analyzed by both experimental tests and numerical simulations.First, a series of index to characterize the aerodynamic performance of th
White Dwarf Research Corporation is a non-profit organization dedicated to scientific research and public education on topics relevant to white dwarf stars.It was founded in 1999 in Austin, Texas to help fulfill the need for an alternative research center where scarce funding dollars could be used more efficiently, and to provide a direct link betw
The most common way to increase power and reduce fuel consumption by modern power plants is contact cooling of a gas or air flow by water injection.A promising development of this direction is to use aerothermopressor technologies.The use of heat air, which is compressed by the power plant compressors, accelerates the flow to a speed close to the s
Abstract Background A core difficulty for individuals with autism is making friends and successfully engaging and interacting with peers.The majority of measures to assess peer interactions are observations in a school setting or self-report.The present study examined the convergent validity of using a teacher rating scale, the Penn Interactive Pee