Author Topic: Whatif I design a plane  (Read 614 times)

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Offline Tophe

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Re: Whatif I design a plane
« Reply #15 on: June 20, 2020, 09:24:24 am »
This is already a good work! :thumbsup:
Not "ready to fly" but great as drawing ;)
[the word "realistic" hurts my heart...]

Offline perttime

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Re: Whatif I design a plane
« Reply #16 on: June 20, 2020, 09:26:35 am »
You could just get a 2-view or 3-view and put some color on it, for a conventional drawing entry.

A bit of your reasoning and calculations to go as a back story, perhaps. A back story is often appreciated.

Offline Caveman

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Re: Whatif I design a plane
« Reply #17 on: June 20, 2020, 09:55:47 am »
This is already a good work! :thumbsup:
Not "ready to fly" but great as drawing ;)

But tophe, this is literally as “realistic” as a whif gets! ;)

Thank you for your kind comments all the same.  <_<
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Offline Caveman

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Re: Whatif I design a plane
« Reply #18 on: June 21, 2020, 02:27:35 pm »
Ok, I managed to do a bit more to pretty up the basic draft.







No paint job for this level of detail. I imagine that I'd end up with something mostly white (I'm envisaging a composite construction and it doesn't like the thermal variation that complicated colour schemes produce). As you can see, the packaging around the pilot is tight. I might look at stretching that out a bit. The whole thing comes in at just over 6m long. Meaning that each wing is longer than the overall aircraft length. Also conspicuous by its absence is the landing gear. I think I'd probably go with a retractable single as per the two reference aircraft. However, where it retracts to is a very interesting question. Both reference aircraft have it between the pilots knees. My pilot position makes that a bit of a long stretch. Behind the pilots looks like the next obvious position, but that may interfere with the wing spar. I could move the wing up but that would affect the length of any wing stabilisers. Lots to investigate there! Im not particularly happy with the empennage either. I've used standard sizing factors from Raymer but I don't think that they suit this application well. To me it looks like I've got too much vertical area. I've also chosen a far too great aspect ratio. It may be that a shorter wider fin would look "better". Final tail size will be determined by control effectiveness. If I wanted to do that really properly I'd need to do a bit of CFD with the fuselage and main wing to find out what the local airflow is doing around the back end of the aircraft with and without power. A long way away yet though!

Plenty more to do to come up with a "good" design. This was simply the first step.
« Last Edit: June 21, 2020, 02:36:00 pm by Caveman »
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Offline Tophe

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Re: Whatif I design a plane
« Reply #19 on: June 21, 2020, 08:52:53 pm »
Congratulations, this step is finished and well done! :thumbsup:
[the word "realistic" hurts my heart...]