The recurrent debate of whether simple questions are allowed or not is back. The questions are simple in the sense that answers are very easy to get online. Such recent questions:
- Why does the Ka-50 (Hokum) have two main rotors, one on top of another?
- What is the lump under the English Electric Lightning's fuselage?
The OP didn't search hard enough (maybe they didn't search at all) before asking, and optionally the question should be downvoted.
The site policy is not against questions that have already a good answer online.
My personal mindset at the moment is:
Unless the question is a trick to get some hidden benefit (e.g. disguised advertising), all good questions are good enough, regardless of existing answers.
There must be apparent good will / honesty.
As it was discussed in the related comments, someone may miss the way to search for an existing answer (on the site, or elsewhere). We do not have to penalize by a downvote such questions.
Answerers may use existing online documentation from different sources, and add value by assembling elements in better / more educational / more simple / ... ways.
We are all together building a another reference where simple answers have to be found too.
It would be good it more expert-level Q/A existed, but increasing the ratio cannot be done by limiting simple questions, it has to be done by additions.
I don't bother to link to the author as it doesn't matter who said them, and I think it may vary depending on the day / the question:
Not a good question:
Please do a little basic research before asking here.
Questions on SE normally expect a bit of research ahead of time. This was obviously not done in this case.
In this case, your question is already answered by the Wikipedia article about this particular helicopter.
History.SE actually has a Close reason of "Easily found on Wikipedia".
This site is generally speaking supposed to be beginner friendly, I'm actually pretty surprised by all the downvotes.
If we refused to answer questions that already have a relevant Wikipedia article, this site would be a lot smaller :-)
So far the consensus on this site is that we answer questions, we don't tell people to RTFM or JFGI.
Not a good question, but let's answer it:
I do agree with you that people who do some research first usually ask better questions.
It happens, even to the best of us.
We should give people the benefit of the doubt.
We have no idea why the OP wasn't able to find the answer on their own, perhaps they are young, perhaps they're google-fu was off today.
Chat is best suited:
- Some of your questions may actually work a bit better in chat, perhaps you would like to join us there?
Should we have a common position?
Can we agree on principles?