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潘老师:最恐惧的3大雅思口语PART2题目
2019-04-04 17:50:54
最恐惧的3大雅思口语PART2题目之一:Describe a math skill you learned at middle school
 
摆脱乘法口诀表的答题思路吧。。。。每年几十万考生恐怕都准备乘法口诀。。
今天来说说飞机下滑道高度计算,很简单,用初中学的三角正切函数公式就行了。
 
The topic does remind me of a triangular formula, by which I can relive the traditional calculation for descending my simulated airplane. I was given the particular formula when my online flight school tutor learnt that I was very into calculation for VFR, which is short for Visual Flight Rules.
The equation is known as tangent function, which is used to calculate a suitable altitude to start descent at an angle of 3 degrees, at which passengers feel the most comfortable for descent although it’s just a flight simulation, 90 percent of the functions are the same as real-life.
Let's assume a scenario, the fix to descend is 36 nautical miles from runway, which is equal to 220,000 feet. As the formula says, side a is for altitude, the side B for distance to go, so, to multiply tangent 3 degress by the side B can get the correct/exact altitude to descend. I feel the pilots with whom I fly is unprofessional when the airplane is getting lower at a much higher angle, making my ear bulge膨胀.


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