Chapter 15 Chapter 14 A supersonic car with a speed of 3000㎞ per hour! ?

It is common sense in utopian science that the car of a righteous hero must be extremely fast.Moreover, the later the hero comes out, the faster the car will be!This is also one of the laws. Kamen Rider 1's "Storm" has a speed of 400㎞, "New Storm" has a speed of 500㎞, Kamen Rider V3's "Whirlwind" has a speed of 600㎞, and Kamen Rider X's "Cruise". No. 1” has a speed of 700㎞, the strong “Armor No.” has a speed of 1100㎞, and the super No. 1 “V Jet Car” has a speed of 1340㎞!"Progress" according to this ratio. By the time of "Special Exedraft" in 1992, the "Barias 7" in the play was already a supersonic car with a speed of 3000㎞ per hour, with the speed of sound. 2.5 times higher speed!In other words, the speed of this car is faster than that of the Concorde Jet!

According to the data, the maximum speed of an F1 car is 350㎞ per hour, which is 0.29 times the speed of sound.However, there have also been records of rocket-propelled vehicles reaching speeds of thousands of kilometers per hour.But that can only go on a straight runway, basically it doesn't rely on the power of the wheels to rotate, it can only be regarded as a rocket that can't fly.Therefore, the current scientific power in the real world is still the record of the highest speed engine with a speed of 350㎞ per hour.The speed of 3000㎞ per hour, 2.5 times the speed of sound means 833 meters per second, which is faster than the speed of a rifle bullet (800 meters per second)!In other words, if Cop gets in this car, even Brother 13 can't do anything to him... The bullets can't catch up at all!Just like the Atomic Spaceman... sounds cool, let's see what the finished car looks like.

The first is the output of the engine.It is not easy to fight against air resistance and road friction. The size of air resistance depends on the speed of your own. If you want to get 2 times the speed, you will have 4 times the air resistance, and the resistance of 3 times the speed is 9 times... Get it ? The top speed of an F1 car is 350㎞ per hour, and the engine is 600 horsepower.The speed of 3000㎞ per hour is 8.6 times that of it, so the engine output is 73 times that of 44,000 horsepower!It is about the same output as the battleship "Ise"! When F1 racing cars do not prohibit the use of turbo engines, the maximum output that can be obtained with a displacement of 1000㏄ is about 1000 horsepower.

By analogy, the engine exhaust of this supersonic car is 44 liters...more than the capacity of a domestic refrigerator!However, the engine weight of a 3500㏄ F1 racing car is about 160kg. In this way, the engine of a supersonic car weighs two tons, and the car body weighs at least 6 tons...General vehicles are only 1 ton, and F1 racing cars are only about 550kg. ...Secondly, it is useless just to have a strong engine. If the grip of the tires is not enough, no matter how fast it is, the tires are just idling!The grip of the tire is related to the coefficient of friction. (The definition of the coefficient of friction is: when an object is placed on a 45° slope, and it is just able to keep still without slipping, the coefficient of friction of this object is set as 1.) F1 racing car can run in 2.5 seconds Accelerate to a speed of 100㎞ per hour. If you follow this speed, you must have a friction force 1.13 times your own weight; that is to say, the coefficient of friction between the tire and the ground must be 1.13! !

Based on this calculation, it will take 75 seconds to accelerate to 3000㎞ per hour, and it will take 1 minute and 15 seconds from activation to reaching the highest speed. Such an idle speed is disadvantageous in actual combat.Moreover, the acceleration time of 75 seconds has already traveled 31㎞, which means that this supersonic car needs an acceleration runway of up to 31㎞!According to the story of "Big Men", their headquarters is in Tokyo, so a 31㎞-long acceleration runway should be built outside the garage of the supersonic car, which can go from Tokyo to Tachikawa... The construction of a 31-kilometer straight road outside the garage of the search headquarters triggered opposition from the surrounding residents, and the acquisition of construction land caused budget problems at the headquarters of the special search... If you want to shorten the acceleration time, you need to increase the friction coefficient of the tires .If it is to be accelerated to 3000㎞ per hour within 10 seconds, then the coefficient of friction must be 8.5, which means: the friction force must be large enough to allow the car to stop on a slope of 83° without slipping!

Icon: 83°!That's not called a "slope", it's a "wall" at all!Want to "park" a car body weighing up to 6 tons on a nearly 90° vertical wall?What kind of "instant adhesive tire" is this? For a tire with a diameter of 2 meters, the part in contact with the ground is only 10cm, and the contact time of each point on the tire with the ground is less than 0.00012 seconds. It is necessary to form a strong friction with the ground in such a short time , and immediately loosen!Tires are impossible, how about changing gears with thorns?But there is no cogging on the road, unless the convex teeth made of diamonds are used on the wheels to dig cogging on the road, but this will reduce the speed sharply.Unless the cogging is dug on the road in advance, but the supersonic vehicle is going to chase the enemy, how can it know in advance where the enemy is fleeing?

How about digging the road ahead of the supersonic car?Good idea, but the speed of a supersonic car is 2.5 times the speed of sound, so the road digger must have this speed to catch up!That...only an airplane can do it!Use a supersonic jet fighter at 2.5 times the speed of sound to catch up in front of the supersonic car, fire at the ground with a machine gun, and shoot the ground out of the cog, so that the gear tires of the supersonic car can run! (As shown in the picture) However, the shooting of this machine gun should be more intensive, because the interval between the tooth grooves cannot exceed 10cm. In terms of 2.5 times the speed of sound, one shot is fired every 0.00012 seconds, and 17 shots are fired in one second. Tens of thousands of bullets, if a bullet weighs 50 grams (this kind of machine gun bullet that needs to open holes in the road surface cannot be too light), it will consume 8.3 tons of ammunition in one second, and 5,000 tons of ammunition will be consumed in 10 minutes (30 times the weight of the Concorde)...ah...but...in this case, wouldn't it be good to just ask the fighter to fly to the front and shoot the enemy?Why do you need a supersonic car? ?

There is another question. It is said that a supersonic vehicle needs a friction coefficient of 8.3 when accelerating, which means that it must be able to withstand a force 8.3 times its own weight.This means that when accelerating, all the things on the car (including the occupants) must bear the force of 8.3 times their own weight!Need to be aware...to turn?That's serious, the corner of F1 car has a coefficient of friction of 4.3, which means it can stop on a slope of 77°.The requirements for supersonic cars are even higher. F1 racing cars can only use a speed of 100㎞ when passing a curve, which is less than 29% of the full speed; calculated by the same ratio, 29% of the full speed of a supersonic car is 857㎞ , to pass the same curve at this speed, the coefficient of friction should reach 316!This means that at the moment of turning, the car body (including the occupant) will be subjected to a lateral force 316 times its own weight!

I think it's better not to corner... The next question is "heat".At 2.5 times the speed of sound, friction with the air generates heat, and the front part will reach 386°C!Therefore, it is impossible to dissipate heat through ventilation, because the gust of 830 meters per second will destroy the interior of the car.Ventilated cooling is impossible, what about using an ordinary freezer?It is necessary to lower the high temperature of 386°C to about 350°C. This is not something that can be done by ordinary industrial freezers. Can larger freezers...be able to carry it? In this way, supersonic vehicles cannot carry people at all!When people sit on it, they will die in the first ten seconds, and then the car will become an unmanned "land missile runaway"... How about using wireless remote control instead?No one is allowed to ride... Icon: A supersonic car controlled by the head himself!Like Iron Man 28? ……(Arslan’s Note: Our director Yanagida Riko has always been fond of remote control methods, and he is opposed to super weapons equipped with humans... If he lived in the world of EVA, he would be a member of JA’s group, right? ?) Well, even if the supermen of our special search EXEDRAFT are all wearing superalloy armored combat suits, they are not afraid of high temperatures, and can withstand any acceleration of gravity, so if we really dispatch this supersonic car once, it will be What scene?

Don't forget what we said in Chapter 11, when an object travels at supersonic speed, a "shock wave" will occur!Even if the body of the supersonic vehicle is extremely strong, the shock wave still cannot be ignored for people or things on both sides of the road!The Concorde jet dared to fly out at 2.05 times the speed of sound at an altitude above 2, because it was afraid that the shock wave would damage the residents and buildings below!Because the shock wave has lethality within 5000 meters! Icon: The scene of the city after the supersonic vehicle passed by... When the supersonic vehicle with a speed of 2.5 times the sound speed was dispatched, the glass of the buildings on both sides of the road was completely shattered, the eardrums of all the surrounding residents burst, seven holes were bleeding, and the ground was also dug out by the shock wave. Faults... Not only that, there will be jet fighters in front of the supersonic vehicle, firing 170,000 cannons per second to the ground in order to "clear the way" for the supersonic vehicle, blasting out countless potholes on the road surface of the city... how?Is special search EXEDRAFT's Superman extraordinary?Once dispatched, corpses are scattered all over the field, and the people are in dire straits. This way, bad people dare not come out to do bad things. Otherwise, if a supersonic car is dispatched and innocent citizens are killed, wouldn’t it be conscience-stricken? Are you upset?

It can be seen that the supersonic car is really a weapon to prevent crime!The villains obediently bow their heads and confess their sins!Otherwise, when the Superman comes, everyone will die together! Second preview: Huh?Long time no mention of giant robots?no problem!The next time our protagonists are Gait Robot and Combatella V!Please see the next chapter "Fit together! Super robot!"