supported by the National Natural Science Foundation of China (Grant Nos.12172014,U2241264,and 12332001);the National Key Laboratory of Helicopter Aeromechanics Fund (Grant No.61422202206).
This study investigates surface erosion wear caused by collision and friction between propellers and sand particles during the flight of propeller transport aircraft in harsh environments like deserts and plateaus,whi...
supported by the Major Special Science and Technology Project(2019B10076)of“Ningbo Science and Technology Innovation 2025”.
In recent years,Remotely Operated Vehicles(ROVs)have played an increasingly important role in the construc-tion and monitoring of underwater pile foundations.However,due to the open frame structure of such vehicles,a ...
JKA through its promotion funds from KEIRIN RACE and by JSPS KAKENHI Grant Number 21K03856.
In this study,we adopt a coupled fluid-rigid body simulation using the moving computational domain method and multi-axis sliding mesh method for the takeoff,hovering,and yawing flight of an electric vertical takeoff a...
A theoretical model of a propeller cavitation noise modulation spectrum of ships with skewed propellers is proposed.According to the relationships between the wake velocity and the cavitation noise volume and between ...
supported by the National Natural Science Foundation of China(21704065,21902073);Guangdong Basic and Applied Basic Research Foundation(2021A1515010228);the Innovation Research Foundation of Shenzhen(CYJ20190808115215125).
Herein,a pair of chiral macrocyclic luminogens derived from chiral 1,1-bi(2-naphthol)(BINOL)and tetraphenylethenes(TPEs)have been prepared with high yield via intramolecular McMurry coupling,in which the preferential ...
Methodological issues associated with the determination of the vertical take-off and landing aerodynamic parameters equipped with two rotary propellers during take-off and hovering, descent and landing are studied in ...
the National Natural Science Foundation of China(No.11774355).Special thanks are extended to the Wildlife Park,Hefei,Anhui,China for providing the feathers of owls and hawks.
The Leading-Edge(LE)serrations on owls'wings are known to be responsible for silent flight.However,this design has rarely been applied to reduce the noise of rotational rotor propellers and the morphologies of the exi...
In this article, we consider, based on the super-diamagnetic model, the new problems of Saturn’s rings discovered by Cassini, such as: 1) anomalous purity of water ice;2) Saturn’s magnetic field alignment with the p...
Ocean energy has a potential of providing a large amount of renewable energy around the world. One of the forms of ocean energy, tidal stream power is widely recognized as the continuous, predictable and eco-friendly ...
Tidal stream power units with horizontal-axis propellers are one of promising technologies for generating the renewable green energy. The ebb and flow require that the power unit must operate in bidirectional tidal st...