J-20 5th Gen Fighter Thread VIII
- Thread starter Blitzo
- Start date
Not true as I understand.
Here is a paper from Institute of Engineering Thermophysics of CAS.
guess which one among a, b and c are the stable combustion therefor highest temperature?
Color is determined by the emitter's EM spectrum/frequency. Temperature is determined by the energe release in a given time. There is no direct relationship between them.
Fuel/oxgygen consumption rate has nothing to do with color either. A tiny blowtorch can produce blue flame with smaller fuel/oxygen bruning rate than a bonfire.
If you read Chinese you can better understand it by reading the paper.
"Articles" and "analyses" of J-20's RCS versus other fighters are done every now and then, and this particular one has been posted on the J-20 thread before and discussed at length and everyone has explained why they shouldn't be viewed as useful.
The quality of the output is only as good as the model that they're using and ultimately they do not have a good model with sufficient detail to be complete.
I am deleting the posts related to this because everytime these discussions come up we always end up using pages of back and forth and reaching the same conclusion. Sorry folks, it means that we aren't willing to do another groundhog day.
@Duke Xiao of Qin , be more selective with what you are posting. Chances are if you come across something which is new and interesting for you, it has already been discussed before, so if you desperately have to post something you come across, I advise to first ask "has this been discussed and is there anything useful to gather from it" rather than to take it seriously upon their own merits.
The quality of the output is only as good as the model that they're using and ultimately they do not have a good model with sufficient detail to be complete.
I am deleting the posts related to this because everytime these discussions come up we always end up using pages of back and forth and reaching the same conclusion. Sorry folks, it means that we aren't willing to do another groundhog day.
@Duke Xiao of Qin , be more selective with what you are posting. Chances are if you come across something which is new and interesting for you, it has already been discussed before, so if you desperately have to post something you come across, I advise to first ask "has this been discussed and is there anything useful to gather from it" rather than to take it seriously upon their own merits.
I am not interested in talking about myself, and even if I was, this is not the place to do so.
You should dial back on your posts a little bit, because many of them are of poor quality and off topic.
I am going to delete the last few posts. If you continue this sort of posting in this thread or others, there will be moderator action taken. You may mean no negative intent, but the outcome of your posting is distracting and off topic.
You do not need to acknowledge or reply to this post.
um there is a direct relationship between color and temperature.
Not to be confused with spectral lines.
The hotter the something is the lower the wavelength of the peak of the em spectrum coming off it.
Glowing red embers are cooler than a yellow flame which is cooler than a blue flame.
Last edited:
I see Blitzo. Your name is Rick Joe.
I think I know enough about you.
I will not ask anymore.
Thank you,
Sincerely,
I think I know enough about you.
I will not ask anymore.
Thank you,
Sincerely,
Maxwell boltzmann distribution. Now given I'm not an expert in physics perhaps there's some more consideration to be made for exhausts in jet engines?
The exhaust gas is the source of the color, there is no exceptions for jet engines.
described in the equation below
This equation was the birth of quantum physics
| B | = | |
| v | = | frequency |
| T | = | |
| kB | = | |
| h | = | |
| c | = |
kwaigonegin
Colonel
It's funny because I remember the excitement here on SDF. Geez I'm dating myself .. i guess I've been here a very long time as well.
I think we hit something like 5000 people viewing the forum simultaneously. Crazy times. I don’t think anything like this will ever happen again.