Live Wilderness Adventure

Chapter 167 I hope Beihai is fine

It was sunny just now, and within half an hour, lead-colored clouds pushed over from the southeast, thick as a quilt in winter, and the sunlight could not penetrate.

[The weather is so scary, is it going to snow? 】

[It seems to be, I remember that professor said yesterday that it will snow the day after tomorrow, but this is only the next day? 】

[There are errors in the weather forecast, right? 】

[Fang Shen, run quickly, or it will be too late! 】

The water friends became anxious when they saw the cloud. They can still vividly remember the power of the last blizzard. If it is trapped, the glider will not be able to fly, and the geese and birds may be frozen to death.

Étienne tugged Bifang's robe nervously.

"Boss, it's going to snow."

"Don't worry, it's useless to rush."

Bi Fang naturally saw the clouds slowly drifting over, but he was not in a hurry, it was useless to be in a hurry, the more anxious the more he couldn't figure it out.

"It will take some time for the clouds to float over. The most important thing for us is to find the current position and determine the direction before flying, otherwise the route may become more and more deviated. If we go to a human city, the geese and birds will remember If you stay here, the danger will be great."

"You first pick a few pieces of charcoal, wrap them in soil and take them away, then pour water into the pit to put out the fire, remember to fill it with soil."

Hearing what Bi Fang said, Étienne could only endure temporarily and acted according to Bi Fang's instructions, but his trembling feet revealed his nervousness.

While Bi Fang was calculating, he was still explaining the method to the audience. He didn't seem to panic at all, but people with discerning eyes could still see that he was recalculating a value.

Just miscalculated.

"The sun elevation angle is equal to arctan (stick height/shadow length), and then calculate the latitude of the observation point = 90 - the sun elevation angle + the sun declination obtained from the calendar, and the latitude is calculated."

"In the future, when the days are clear, you can repeat the observation and calculation data to average multiple times to improve the accuracy. This method is properly calculated, the measurement accuracy error will be less than 1/3000, and the positioning accuracy error will not exceed 4 kilometers."

Bi Fang's hand speeded up obviously, his speech became tighter and tighter, the tip of the pen rustled, and the numbers were almost connected together, and the lines were like a rapidly growing dense forest.

The clouds were getting closer and closer, and everyone who watched was breaking out in a cold sweat.

The world is crazy, but there are still people doing math problems!

"Using the sun to measure the azimuth is the most accurate two days in a year: the vernal equinox and the autumnal equinox, because these two days are the same length of day and night around the world, and the true solar time is consistent with the flat solar time. In addition, you need to understand the meridian of the East Eighth District, which is the east longitude 120°."

"This longitude happens to pass through Hangzhou instead of the capital. The so-called capital time is actually the actual local time in Hangzhou. The time difference when calculating the longitude must be attributed to the geographical distance between Hangzhou and Hangzhou. This detail cannot be missed, otherwise the error may It's going to be big."

The more calm Bi Fang became, the more anxious Étienne became, almost jumping his feet. He kept urging him, and couldn't help but untie the rope tied to the tree.

Etienne by the lake began to urge: "Are you ready?"

"Soon."

"Ok?"

"Hurry up! Go collect your clothes first!"

Bi Fang frowned, he knew better than anyone else that the clouds seemed to be moving slowly, but they were actually rushing at a speed of more than 40 or even 50 kilometers per hour, almost comparable to the speed of a car in the city!

It only takes less than ten minutes to catch up with them!

Concentrate, concentrate!

Bi Fang has already done most of the calculations, and only the final result is missing!

"Are you ready?" Etienne hugged the jacket tightly, looking at the clouds that were about to fall over his head, his heart almost jumped out of his chest!

This time, Bi Fang didn't speak. He jumped up from the rock, as if breaking through a dark membrane and returning to reality. The wind blew through the manuscript paper, and a coordinate jumped up.

(69°1' N, 24°56' E)!

[Fuck, awesome! Really figured it out! 】

[Too awesome! 】

[Spaceship and knees here! 】

[The boss who does math problems at the critical moment of life and death! Who else! 】

【What? A blizzard is coming? Please let me finish this question first]

Bi Fang pulled off his jacket and put it on. At this moment, a gust of wind blew his black jacket, roaring like a banner.

"Go, get on the plane!"

Etienne shouted excitedly, recalling the geese to jump on the glider, Bi Fang pulled out the map, and found their current location according to the latitude and longitude.

Sure enough!

The route that was originally in the southwest direction became the southeast direction!

Bi Fang put away the map and came to the lake. Seeing Etienne sitting in the driver's seat, he was taken aback, and waved him to sit back: "What are you doing? Sit in the back!"

【Hahaha, what boy doesn't have the heart to fly a glider】

【Fang Shen is scared】

【This is a habit】

Etienne also realized that he was sitting in the wrong seat, and hurried to the back row.

Bi Fang sat in the driver's seat, pulled the engine, and the spiral blades rotated rapidly, driving the glider to slide slowly.

Etienne in the back row kept blowing his whistle, and the geese and birds who panicked because of the wind and snow gradually gathered and quickly arranged in a herringbone shape. With the first experience, the organization was very fast this time.

Bits and pieces of snowflakes began to fly and fell on the lake for a long time. Etienne reached out to catch them, and found that the snowflakes were astonishingly large, almost the size of a bean.

"The snow fell too late, and a large amount of water vapor accumulated together, which may cause serious sudden snowfall." Bi Fang looked serious, wishing the propellers could turn faster.

We were far away just now, and everyone didn't feel much. Now that the clouds are approaching, we realize that the clouds are so thick that the sun is almost completely blocked, and we can't see any sunlight.

The shrill and terrifying sound of the wind resounded through the sky, disappearing into the boundless snow, like released fierce spirits one by one.

"If I'm not mistaken, these are rain clouds, which usually cover the whole sky evenly, and the thickness is generally 4 to 5 kilometers, which is equivalent to stacking 10 Shanghai Global Financial Centers. This thickness is enough to cover the sun and the moon. All the light is covered!"

Finally, when the snow was getting heavier and the clouds almost covered the top of the head, the glider finally left the water.

The water friends started to cheer, but as soon as the glider took off, a gust of wind suddenly lifted the plane up almost seventy degrees, scaring the audience almost to heart!

Fortunately, Bi Fang pulled the joystick ahead of time and lowered the nose of the plane, so he could barely control the plane, and took advantage of the wind to climb!

Facing the strong wind, the glider flew extremely fast, and Etienne who was sitting at the back felt like he was on a roller coaster, with a strong sense of sticking to his back. Soon, with violent shaking, they successfully rushed out with snowflakes!

The clouds behind were still catching up, but it was too late, the glider flew into the sky, the howling wind roared, the wind and snow flew up, and let out an unwilling roar.

Only a little bit, it is the natural moat!

The plane gradually calmed down, and Etienne looked behind him, and found that all 18 geese were safe and sound!

He flew so fast just now, he was very worried that the wild goose would fall behind.

Bi Fang looked back and saw Etienne's nervousness, and explained: "Don't worry, wild geese fly very fast, they can fly 68-90 kilometers per hour, and even a long journey of more than 5,000 kilometers will only take more than a month." , faster than the wind speed in a blizzard, and the wind direction is tailwind, we fly fast, and they will not slow down."

【It was too dangerous just now, but luckily I flew early, otherwise it would be gone】

[That's right, if the blizzard came suddenly, wouldn't there be nothing? Fortunately, the plane flies fast]

[Speaking of which, the last time Lao Fang Mohe accidentally measured the latitude and longitude? If it is detected, can it be fixed-point rescue? 】

[You are stupid, the essence of measuring longitude and latitude is actually to look at the height of celestial bodies. During the snowstorm in Mohe for several days, there was no sunshine. Do you look at Nima's celestial bodies? Talk over your head. 】

[Awesome, there is an irritable old man who understands it! too strong】

Bi Fang saw the water friends blowing the water and smiled. He was indeed lucky this time, and escaped before the snowstorm came. However, he didn’t need to be too scared when he caught up. It wasn’t the first time he met them. Just a storm.

Storms at sea are far more dangerous than snowstorms on land.