You would need to clarify your mission parameters a bit more. What is your inexpensive? How long are you planning to stay airborne? Why top-speed limits?
My gut numbers for you:
With 12 kg payload on a plane you would need a minimum of about 3 m wing span, will have a dry weight of about 7 to 15 kg. This kind of plane needs somewhat proper place and space to operate.
I would start by calculating a plane with 20 - 25 kg AUW, derive necessary wing areas for a, say 0.4 lift coefficient at your target speeds. From there estimate the drag coefficients and estimate the power need. For take-off and landing you may find profiles and wing configurations which go up to around 1.0 lift coefficient. If you are looking for long duration flights, that will drive your wing span longer and the aspect ratio higher and add somewhat serious structural requirements to the wing design.
In case you have little experience in building/flying and/or feel of how much an airframe can carry, I would warmly recommend starting with something considerably lighter.
Make sure to post a picture of the 25 pound wine bottle for us here to dream about. I am sure your mother in-law's heart will melt when you deliver that payload to her...
Replies
YES IT IS VERY POSSIBLE. ARE YOU WILLING TO PAY FOR SUCH AN AIRCRAFT?
C.P. RYAN
Thats one big bottle, would that bottle perhaps be a proffesional video camera?
Just askin
You would need to clarify your mission parameters a bit more. What is your inexpensive? How long are you planning to stay airborne? Why top-speed limits?
My gut numbers for you:
With 12 kg payload on a plane you would need a minimum of about 3 m wing span, will have a dry weight of about 7 to 15 kg. This kind of plane needs somewhat proper place and space to operate.
I would start by calculating a plane with 20 - 25 kg AUW, derive necessary wing areas for a, say 0.4 lift coefficient at your target speeds. From there estimate the drag coefficients and estimate the power need. For take-off and landing you may find profiles and wing configurations which go up to around 1.0 lift coefficient. If you are looking for long duration flights, that will drive your wing span longer and the aspect ratio higher and add somewhat serious structural requirements to the wing design.
In case you have little experience in building/flying and/or feel of how much an airframe can carry, I would warmly recommend starting with something considerably lighter.
Make sure to post a picture of the 25 pound wine bottle for us here to dream about. I am sure your mother in-law's heart will melt when you deliver that payload to her...
cheers
-mikko