论文部分内容阅读
十七世纪以来,气球被有些国家用在飞行、气象、军事、科研等方面。1950年瑞典林业科学研究所才把气球用于林业生产,进行了首次集材试验,但因控制失灵和漏气等故障而没有成功。1955年,瑞典又一次进行了气球集材试验,获得成功。进入六十年代以后,加拿大、美国等也分别进行了气球集材试验,先后都获得成功。我国1979年在黑龙江带岭林业实验局碧水林场进行试验。通过试验,对气球集材的技术性能,集材工艺、适宜条件等进行了初步的探索。
Since the seventeenth century, balloons have been used by some countries in flight, meteorology, military affairs and scientific research. In 1950, the Swedish Academy of Forestry used balloons for forestry production for the first time, but failed due to failures of control and air leaks. In 1955, Sweden once again carried out a balloon test, the success. Into the sixties, Canada, the United States also conducted a balloon test, respectively, have been successful. In 1979, our country experimented with the Bishui Forest Farm of Heilongjiang Yiling Forestry Experimental Bureau. Through the experiment, the technical performance of the balloon material, the skidding process, the suitable conditions for a preliminary exploration.