Think seriously about stupid things.”
I have a lot of ideas, but I’ll start with the ones that come to mind easily.
There will be no readers who do not know Bugatti Veyron, but it is a machine with about 1000 horsepower and about 400 km / h.
How many horsepower would it take to reach the speed of light?
Just to verify that.
In addition, although it is a matter of course, we basically do not consider various things such as heat generation due to roads and air resistance, and feasibility in the first place.
In the first place, how many km/h does the light travel?
If you can’t quantify your goals, nothing will happen.
It’s convenient time. For the sake of convenience, the speed is assumed to be 300,000 km/s.
I’m sorry that I can’t do this myself, but I confirmed that 300,000 kilometers is 300 million meters.
I got the answer. It is km/h somehow. Too many zeros, can’t copy…
It seems to be 1,080,000,000 km/h.
I thought here I thought it would have been better if I had just looked at the normal “speed of light”.
For the time being, save the value for later copy-paste.
“1079000000” “1,079,000,000”
Roughly estimated from Veyron Veyron’s horsepower and maximum speed difference
Quoting from Wikipedia here, “Veyron is 1001 horsepower and 407 km / h”. The problem here seems to be that the Chiron cannot provide a theoretical maximum speed because the tires cannot withstand it.
The nominal maximum speed is 420km/h, but it is said that it is not difficult to actually exceed that speed. Theoretically, it is possible to exceed 500km/h, but even if new Chiron-specific tires were developed, there were no tires that could withstand that speed, so it was said that it could not be achieved [5]. However, on September 2, 2019, the maximum speed measured by the prototype was 306.5525 mph (490.484 km / h) [6] [7], and it was the first hypercar to exceed 300 mph [8].
Wikipedia:ブガッティ・シロン
It seems that the actual measured value reached 490.484km / h without knowing it, but since tire performance is ignored this time, it can not be said to be an ideal reference source.
Here, we examined various models such as Speedtail and GT-R, but decided that it lacked accuracy because “air resistance makes a big difference”.
So what to do, use the existence of “SuperSport”.
When I checked it, it seems to be 431km / h with 1200 horsepower.
There may be various differences, but at least in the world above 400 km / h, 200 horsepower is required to add 24 km / h.
Since the air resistance increases in proportion to the speed put out, what will happen?
If we attack from this direction, it will end in vain, so we will consider another approach.
What is the strength of air resistance at the speed of light?
Perhaps this verification will come down to the story of “horsepower enough to overcome air resistance”.
Let’s do the calculation of mathematics called physics.
The official website of ISUZU has the following formula.
I would like to think based on Veyron, but in order to do that, the projected area and the air resistance coefficient (probably cd value) are unknown.
After some research, it seems that the Cd value is 0.36.
And what is unknown is the projected area. Since it is really unknown, it seems that there is no choice but to guess what it is good at from the width x total height and the feeling of size when viewed from the front.
Here’s what I found:
By the way, Veyron measures 1998mm wide and 1206mm tall.
It’s a little rough, but it seems to be useful for estimation.
By the way, don’t forget that the front tire is also included in the projected area.
Also, this figure does not include mirrors.
Rounding the size to meters gives 2 meters x 1.2 meters = 2.4 square meters.
Now it’s time to guess. What percentage of the projected area of the Veyron is the 2.4m^2 box? ?
I don’t know why, so I have no choice but to make an appropriate decision.
I decided to go with 2.0m^2 because I thought it looked like it was 15% less, and because it had a good sharpness.
Bring back the previous formula.
“Air resistance at the speed of light) = 0.36 x 2.0 x 1079000000”.I got the answer.
776880000N.
Air resistance at 400km/h
Here, once again, find the air resistance at 400km/h in the same way.
(air resistance at 400km/h) = 0.36 x 2.0 x 400
It’s a really easy calculation.
I got 288N.
Try to find horsepower from the difference in air resistance
Since “300 N at 1000 horsepower”, will it be “776880000 N at x horsepower”?
If so, 2,589,600,000 horsepower.
It seems to be about 2.6 billion horsepower.
Don’t feel wrong…
There are too many coefficients to ignore in the first place.
Like the historical explanation chatGPT wrote, I may have written a shameful sentence by writing a meaningless sentence…
summary
I would like to value the attitude and thinking habits of challenging questions that have no answers, rather than the correct answers that can’t be given anyway.
I’m sure I’m wrong, but I remembered high school physics for the first time in a while. Should I buy a scientific calculator?
References/sites
It seems that educational institutions and academic societies do not allow Wikipedia to be included in references, but I have no intention of ratifying such a thing, so I quote it without mercy.
