How to design an aircraft like cri cri?

I am making an aircraft as like as cri cri. Now I want to know How to select engine, wing span and propeller size for an small aircraft?

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rinipakhe11 (author) 4 days ago
So what should I use?

You must spend time observing trades men building sheet metal shapes by crimping and expanding aluminum and then acquiring or rent the appropriate tools and practice to acquire the skill to do the same...

All craft builders must go through a student process there is no magic that can make a sheet metal man out of an amateur...

Perhaps you can hire a professional for those tasks that are beyond your abilities.

Bare in mind the purpose of the aircraft shape, curve and smoothness is strongly designed to maintain laminar air flow over the metal surface rather then turbulent air flow which a bad surface will never allow the plane to fly..

rinipakhe11 (author)  iceng4 days ago
can't I make the front flat like this cardboard model?
20171114_224313.jpg

"The purpose of the aircraft shape, curve and smoothness is strongly
designed to maintain laminar air flow over the metal surface rather then
turbulent air flow which a bad surface will never allow the plane to
fly..
"

Flat will increase drag forcing you to use more HP which means a bigger heavier engine with more fuel weight making the wings generate more lift..

iceng iceng3 days ago

You may really want study Bernoulli !!

https://en.wikipedia.org/wiki/Bernoulli%27s_princi...

rinipakhe11 (author) 3 days ago
Which foam should I use in my aircraft to glue with aluminium sheets or with other material?
iceng5 days ago

Can you crimp aluminum sheet to a curved point nose like this cri cri ??

nose.jpg
rinipakhe11 (author)  iceng4 days ago

What metal is used to make cri cri 's body??

rickharris7 days ago

You won't get a better answer than you got for your previous question on this subject.

Essentially if your asking the question you do not yet have enough skill to carry out the project effectively and safely. If you do you would already know the answers.

As is so often the case start with SMALL things, start building models and flying them, learn about structures, materials, engines. Learn about flight there is a lot of information on the web you can access.

https://www.flitetest.com/

has a multitude of FREE PLANS for models, I won't tell you how to find them - go explore.

https://www.youtube.com/results?search_query=Build...

You really really need to do a lot more thinking and study - drawing and design work before you can even think about an answer to engine and prop size.

https://www.experimentalaircraft.info/articles/air...

https://www.eaa.org/en/eaa/aviation-communities-an...

If I can find these things so can you.

Good luck. Remember getting off the ground is the easy part.

rinipakhe11 (author)  rickharris5 days ago

Wing span : 16ft.

Body length : 7ft.

Prop : 140 cm. It was my first model. I have visited your given url. Can be it POSSIBLE?

Engine : 18ps.

Body : Aluminium Sheet.

20171113_171153-1.jpg

Hmm. I would have thought that ploughing into the ground at very high speed was the EASY part. The history of flight is learning how to throw yourself at the ground and miss......

Most people study aeronautical engeneering to answer these questions.
So I doubt too many of them are around here to help out.
My most obvious question would be: Do you have a license to fly your proposed aircraft?
The next would be: Are you actually qualified to build something like this and have the money to get the legal paperwork done?

iceng7 days ago

Even an experienced aeronautical engineer could not make a metal craft asking these questions.. Engine, wing span, prop size are nothing compared to strength of materials, metalurgery and knowing tools to shape sheet metal parts .