Chinese Academy of Sciences

Beijing Institute of Spacecraft Environment Engineering

Ningbo Iii Lasers Technology Co., Ltd

Wenwu Zhang

Yang Yang

Tao Song

Chunhai Guo

Tianrun Zhang

Yufeng Wang

Junke Jiao

Shuhong Xiang

Jingyu Tong

Disclosed are a method of flying on the moon and a device for flying using the method. A medium on a surface of a moon and a medium accelerating module are used in the flying method. The medium is transferred into the medium accelerating module, accelerated by the medium accelerating module, and ejected out of the medium accelerating module by using a power supply. A counterforce is generated in accordance with the momentum conservation, and the counterforce overcomes the lunar gravity and drives a load to take off. The method is suitable for the environment of the moon where flight by means of atmospheric buoyancy is impossible due to the shortage of atmosphere.

Method of flying on the moon and a device for flying on the moon

Disclosed is a method for an all-laser hybrid additive manufacturing. After a matrix is obtained by means of selective laser melting forming, a subtractive forming is carried out on the matrix by means of a pulse laser to form a cavity, and the cavity is then packaged to obtain a forming material with an internal cavity structure. A laser precision packaging method is used in the method based on the melting of the laser selective region. Also disclosed is the apparatus, comprising a laser unit (), a control unit () and a forming unit (). The laser unit is in light path connection with the forming unit, and the control unit is electrically connected with the laser unit and the forming unit respectively. The laser unit comprises a first laser light source to and a second laser light source. The forming unit comprises a welding unit (), and the welding unit is controlled by the control unit and is matched with the laser unit for the additive manufacturing.

Method and device for manufacturing all-laser composite additive

A turbine blade having a gas film cooling structure with a composite irregular groove. The turbine blade has a hollow structure, and a plurality of first grooves which are recessed grooves are provided on an outer surface thereof. A plurality of discrete holes A extending to an inner surface of the turbine blade are provided at the groove bottom of each first groove. The first groove is an irregular groove, and includes at least two portions in a depth direction. A portion having a depth Hfrom the groove bottom of the first groove is a first portion, and the rest thereof is a second portion. At least one side surface of the second portion is formed by expanding in lateral direction from a corresponding side surface of the first portion.

Turbine blade having gas film cooling structure with a composite irregular groove and a method of manufacturing the same

A laser processing head () comprises a first-level nozzle () and a second-level nozzle () that communicate with each other, wherein the second-level nozzle () is arranged downstream of the first-level nozzle (); an inner diameter of the second-level nozzle () gradually decreases in a laser transmission direction, and minimum inner diameter of the first-level nozzle () is larger than the inner diameter of a tail end of the second-level nozzle (). The laser processing head () solves the contradiction between high energy density laser and the system reliability through gradual coupling. Also provided are a laser processing system and a laser processing method.

Laser processing head with two nozzles and systems and methods therefor

A laser shock peening apparatus for the surface of a workpiece, said apparatus comprising a resonant cavity. When said apparatus is used to conduct laser shock peening, because of the presence of the resonant cavity, shock waves that would typically escape outward may instead be utilized, and composite shock waves may be formed as a result of the wave reflection and convergence effects of the resonant cavity. Said waves can then be used on the surface of a workpiece twice or multiple times, thereby greatly increasing energy utilization rates. In addition, a fluid-based confinement layer is limited to the inside of the resonant cavity and has a fixed shape, thereby effectively solving the problems of the poor stability of a fluid-based confinement layer and the difficulty with controlling the thickness of such a confinement layer.

Growing community of inventors

Zhejiang, China

Wenwu Zhang