论文部分内容阅读
一、前言“704”森林灭火剂是目前用于空中喷洒的灭火药液。它是深红色悬浊液,比重1.22粘度10—50厘泊(10℃)。这种灭火剂使用运五型飞机喷洒,只能在30米以下的飞行高度进行,对林区稀疏林下地表火,灌木丛火和沟塘草类火均能起到良好的隔火灭火作用。如果在30米以上喷洒时,或用直升飞机喷洒,该灭火剂就会由于药液粘度低,受风力影响而减少地面受药量,降低灭火效果。因此,为了提高运五型飞机灭火的安全性,
I. Preface “704” forest fire extinguishing agent is currently used for aerial spray extinguishing liquid. It is a dark red suspension with a specific gravity of 1.22 centipoise (10 ° C). This kind of fire extinguishing agent is transported by using the five types of aircraft and can only be carried out at a flight altitude below 30 meters. The fire extinguishing agent can play a good fire extinguishing function against surface fires, shrub fires and ditch pond grass fires under the sparse forest in the forest area . If sprayed over 30 meters or sprayed with a helicopter, the fire extinguishing agent will reduce the dose received on the ground and reduce the fire extinguishing effect due to the low viscosity of the liquid and the wind force. Therefore, in order to improve the safety of the five aircraft flying fire,