危险天气

直升机飞行危险天气区数值建模方法研究

Research on Numerical Modeling Method of Dangerous Weather Region for Helicopter

危险天气条件下的航空飞行与安全

Aviation Flight and Safety under Dangerous Weather Condition

提出应用Graham算法划设静态飞行受限区的方法，同时在考虑危险天气的移动、边界变化和随机因素的影响下，提出动态飞行受限区的划设方法。

The method for establishing the static flight forbidden area based on Graham algorithm is proposed . Then , considering the movement and change of the severe weather and stochastic factors , the dynamic flight forbidden area are established .

散点状分布危险天气区域下的航班改航路径规划

Flight Rerouting Path Planning in Dispersedly Distributed Severe Weather Areas

危险天气是影响航空运输飞行安全和导致航班延误的重要原因。

The severe weather affects flight security extraordinarily and is the leading cause of flight delays .

这些台站可以1小时或不到1小时报告1次天气以警告（人们注意）危险天气的临近。

These stations may report weather intervals of an hour or even less to warn of approaching weather dangers .

随机性扰动是造成空中流量管理延迟的一个重要因素，如危险天气。

A important factor of the delay in the air traffic management systems arises from the stochastic disturbances such as heavy weather .

在航空安全中，约有1／3的事故是由于环境因素造成，而环境因素主要就是危险天气。

The ratio of flight accident result from circumstance factor is 1 / 3 . To a great extent , is dangerous weather .

同时还指出了运用直观的卫星云图，对日常实时航线作适当调整，以避开危险天气区。

And also the suggestion that the practical route may be adjusted slightly to prevent dangerous weather region using real-time satellite image is given .

通过建立概率模型，及设计危险天气避让算法来建立最佳路径图，以解决预达时间问题。

The optimal route map is worked out with establishment of a probability-model with the help of an algorithm that is created to help avoid bad weather .

研究了在危险天气条件下，在雷达管制空域下，计算航空器预达时间的问题。

Discussing problems of how to forecast ETA ( estimated time of arrival ) in given bad weather conditions of an air-space within the reach of monitoring radars .

影响航空运输安全的危险天气因素较多，而在我国航空运输中，低空风切变、雷暴、大气湍流和降水是主要影响飞行安全的危险天气。

There are a lot of dangerous weather factors that influence civil flight safety . But in China , mainly there are four kinds of dangerous weather factors , such as low wind shear , thunderstorm , air turbulence , and precipitation .

这个季节最寒冷最危险的天气现象已经侵袭了中西部地区，并逐渐向东南部地区推移。

Some of the coldest and most dangerous weather in this season already has Midwest formally in its grip , has been pushing east and south .

因此，关于这三类典型航空危险性天气的短期预报技术进行深入研究，对于进一步提高航空气象预报业务能力具有重要的现实意义。

Therefore , the in-depth study on the short-term forecast for three kinds of dangerous weather has important practical significance for improving aviation weather forecasting operational capacity .

即使是最谨慎的商人愿意冒险运送他们的产品很长的距离，更不要说在危险的天气情况下，当他们有这种保护。

Even the most cautious merchants became willing to risk shipping their goods over long distances , not to mention in hazardous weather conditions when they had this kind of protection available .

两件事绝对不能碰到一起：节假日高峰出游和危险的严冬天气。

Two things that should never go together : peak holiday travel and treacherous winter weather .

骑士和驿站工作人员都面临许多危险，恶劣天气就是其中之一。

The riders and the people who worked at the stations faced many dangers . One was the weather .

那太危险了，天气也不好，路也难走，还有您的年纪。他说。

The weather is not good , the roads are bad , think of your age , ' he said .

本周，被称为极地涡旋的天气系统为美国大部分地区带来了危险的寒冷天气。

A weather system known as a polar vortex brought dangerously cold weather to large parts of the United States this week .

保护使之免遭危险和恶劣的天气。

Protected from danger or bad weather .