Solar unmanned aerial vehicle (uav) to build local area air made staggered results

Recently, reporters learned from the research of Chinese aerospace science and industry group, the hospital is put forward based on the near space solar uav LAN feiyun engineering to build the air, which can realize to ground and on the surface of the user a wide range of communication support for a long time. So far, feiyun project successfully completed the more autonomous flight sorties, successful validation carried out based on space-based platform communication applications, phased achievements.

near space solar unmanned aerial vehicle (uav) is based on solar energy to power source, in the process of flight independently obtain energy from the outside world, can fly continuously for days or months of the new platform; Flying height of near space, with high altitude, long life time, use convenient maintenance etc, has a certain sense & other Quasi satellite & throughout; Characteristic, is the current international research hot spot.

the aerospace science and industry research and development of solar unmanned aerial vehicle (uav) in realizing high resistance than the pneumatic performance and decrease the difficulty of the uav flight control using lightweight, high strength composite airframe structure, enhance the wind resistance of unmanned aerial vehicle (uav) and environmental adaptability, adopt efficient energy power system, enhance the mission reliability of unmanned aerial vehicle (uav) long-endurance flight.

　　“ By matching the coordination design of each subsystem unmanned aerial vehicle (uav), with its high altitude, solar energy battery life long outstanding advantage, can be widely used in emergency communication support, remote sensing mapping, meteorological observation, and many other fields, has wide application prospect. ” Said hong-wen zhang, the research director of the China aerospace science and industry group.

hong-wen zhang introduces, feiyun project using solar uavs air LAN communications equipment, can provide greater than the ground base station network coverage and not subject to regional restrictions & other; Along with the type & throughout; Internet access service, the realization of regional connectivity user information, and for the user's IP data, voice, video and other business data transmission link; Can be difficult to set up base areas for effective communication network coverage solutions, at the same time can in a natural disaster, regional communications facilities damaged conditions, rapid recovery to communication skills.

sedimentary Al2O3 films, production feasible methods mainly include PECVD method and technique of atomic layer deposition ( ALD) Method, PECVD method are consistent with the principle of sedimentary SiNx thin film technique, the main reaction gas for trimethyl aluminum ( TMA) 。 Atomic layer deposition ( ALD) Precursor method is to different gas phase reactant alternately into the reaction chamber, form a thin film on sedimentary basement chemical adsorption and reaction process, by way of the limit surface of reactants, the sedimentary process control at the atomic level. ALD method of deposition in the process of Al2O3, the first kind of trimethyl aluminum precursor gases