Live Wilderness Adventure

Chapter 773 Sail

The heavy hull was dragged across the beach, and the wooden planks and gravel squeezed to make a slight friction sound, breaking out small grains of sand.

White foam washed the shore and touched the white wood hull, wetting it to a dark gray.

The resistance became lighter and lighter, and Bi Fang pushed the canoe into the sea with all his strength.

The two connected small boats floated on the sea surface, pushing away the incoming waves, and the sea water gushed out along the gap between the connecting platforms.

Seagulls fly across the skyline and the waves sparkle.

Above the mast, the thin rope fluttered in the wind, twisting like a mad snake.

Today is a rare windy weather.

As an island, there would not be a temperature difference and sea and land breezes, but Easter Island is too big, and the vast sea breeze rushes from the flat sea thousands of kilometers to the land, mighty and mighty.

As a canoe with sails, it is not suitable for going to sea, but what Bi Fang uses is a Latin triangle sail. As a professional survival expert, he should use the triangle sail to sail against the wind!

"Are you ready?"

The audience responded enthusiastically. The familiar opening remarks had already made the whole venue lively. There was no need to do more actions, and a large number of bullet screens flooded the live broadcast room.

【Ready! 】

[Yes, Captain Bi Fang. 】

[It's too quiet, so quiet, how can you drive a warship? 】

Everyone looked at Bi Fang expectantly.

Tourists on the shore tiptoed and held up their mobile phones to take pictures.

The audience sent gifts and barrage.

Just when everyone thought the show was about to begin, Bi Fang grinned suddenly: "Who lives in the big pineapple in the deep sea?"

Everyone was taken aback, not understanding why Bi Fang suddenly said such a sentence.

But he reacted quickly and immediately responded with a barrage.

[It's SpongeBob SquarePants! 】

【No, it's Captain Bi Fang! 】

【Dirty~~~】

[too many elements]

[The next sentence is Fang Fang Huang Huang stretching freely! 】

The sudden teasing made the tense atmosphere a little more relaxed and joyful.

"Fang Fang Huang Huang stretches freely!"

[SpongeBob SquarePants! 】

"If exploring is your desire."

[SpongeBob SquarePants! 】

Bi Fang jumped onto the platform stepping on the sea water, and struck the hull of the boat with a wooden stick, making a unique bang bang sound, like some kind of unique prelude.

"Then knock on the deck and let the big fish clear the way!"

The canoe rose and fell with the waves, Bi Fang stretched out his right arm, twisted the hemp rope several times, and pulled it from top to bottom.

The hemp rope rubbed against the wooden pole rapidly, making a violent twitching sound.

"Wow!"

The pure white canvas was pulled up, and the strong wind instantly inflated the sail.

Bi Fang pulled the rope and jumped onto the aircraft carrier, adjusted the direction of the big sail, and the whole triangle sail cut through the strong wind like a sharp knife.

The sudden weight caused the aircraft carrier to sink suddenly, and then bounced up suddenly under the support of Viking and buoyancy, bringing up a large amount of sea water.

The big arm with smooth lines pulls the full-textured rope, and the cold sea water splashes on the bare chest, which is free and easy.

Cutting through the strong wind, the jib sails swelled and deflated, just like the wings of an airplane. The huge lift acted on the canoe, swinging the sea water and accelerating forward.

"Come on!"

"come on!"

"Easter Island will record this moment!"

Someone on the shore shouted, cheered, and screamed, the voice was loud, but it was infinitely elongated and pulled away.

The speed of the canoe was getting faster and faster, and the cheers behind him were getting smaller and smaller. When I looked back, it was already insignificant.

Bi Fang laughed happily, constantly adjusting the sail, checking the wind direction according to the direction of the rope on the mast, and always keeping the sailboat at the position with the greatest lift or thrust.

This is also the place where the driver's skills are most tested.

【Come on! 】

[I used to watch the sailing championships, and I thought he was so fucking handsome. I always had a dream, that is to fly across the great lakes and oceans, but I never had the opportunity. Watching the live broadcast here is a dream come true in disguise (crying)]

[In other words, why can you move forward against the wind. . . 】

[The previous ones, I didn’t learn physics well after reading physics. Obviously, this is the basic knowledge of quantum mechanics]

【I don't read much, don't lie to me】

[Fifteen centimeters without hair is given to the anchor yacht*1——Fang Shen is so handsome! 】

[The small bearded baby bottle was presented to the anchor Big Bones*66——hell pecs, hell biceps, hell shark gills, crazy licking]

"This is very simple." After simply maintaining stability, Bi Fang fixed the rope, tied it to the mast, and took the time to look at the barrage, "There are roughly two ways for a sail to gain power, namely, blowing forward and cutting. To blow."

"Forward blowing is easy to understand. It is to capture the impact of the wind directly on the back of the sail, and then push the boat forward. This is Newton's action and reaction."

"When sailing downwind, the sails are in the 'stretched' shape and work best at this time. The larger the sail area, the greater the wind thrust, so square sails, including square sails and jibs, are very suitable for downwind sails. Sailing."

"The principle behind this is simple, Newton's third law of action and reaction."

"The wind coming from the side will also generate thrust when reflected from the back of the sail. As long as the direction is from the back, no matter how inclined, it can provide a certain thrust. Here is the tangential force generated, pulling the boat forward. Anyone who has studied force analysis should know it.”

"However, it is more complicated to use the headwind. It uses the Coanda effect and the Bernoulli effect."

[Sorry, I graduated from elementary school, what are these two]

[Fortunately, I have studied fluid mechanics in college, otherwise I really don’t understand (dog head)]

【Physics Master Fang, online】

[Teacher Fang's class is starting, the child is not good at physics, most likely because he doesn't watch live broadcasts, just give him a good meal]

"According to Coanda's theorem, when a gas or liquid enters tangentially to this surface, it will flow along a convex surface. A laminar flow along a curved surface will continue to stick to the same surface."

"This deviating airflow creates a force from the sail surface along the arc, and the result is a force perpendicular to the sail. This force is primarily used by modern wing sails."

After fixing the rope, Bi Fang sat in the Viking.

"And according to the Bernoulli effect, when the wind blows tangentially across both sides of the sail, the airflow on the front side passes through a curved surface, and then recombines with the airflow on the back side, flowing backwards as a chord flow, then the convex front side The rapid airflow will reduce its internal pressure relative to the other face."

"The Bernoulli effect is the content of fluid mechanics, and it is generally only found in university courses, so you may be relatively unfamiliar, but its case should be clear to everyone, that is, the pressure difference produces a 'lift' perpendicular to the sail—— It's the way an airplane wing works."

[I know this, I have done physics in junior high school (cover my face)]

[Finally saw the familiar content]

【Anyway, you can fly even against the wind, right?】

"It's not that exaggerated. Basically, headwinds are okay, but headwinds are theoretically impossible, but complete headwinds are rare in actual sailing."

Among invertebrates, there are some species that God did not endow them with the open genital pores that most sexual reproduction possess, but there is no limit to the way, and the earth has the virtue of good life, since God has closed a door for them , it will definitely leave a window quietly, and formally this window has created a brand-new mating method, that is, traumatic mating. During mating of species that reproduce traumatically, since the female does not have a dedicated genital opening, the male will penetrate the female's abdomen with his sharp penis, and directly spray the tide-like rice liquid into the female's body cavity, and then the sperm will circulate through the female's hemolymph Spreads to the ovary, making it pregnant.