Hello guys. I posted a thread previously about the challenges I'm facing in building a B52 with a max wing span of 60cm. From my calculations, this would require a ducted fan with a diameter of not more than 16mm. I have never come across such a ducted fan as the smallest i see online are about 30mm diameter. I need the plane to be scale and i do not want to use pusher props etc. Please I need suggestions on how I can propel this airplane, please what are my options. Thanks guys
"For every door that closes...." The rest of this saying claims that another one opens, but in reality, each door that closes simply limits the number of doors you have to choose from. The same applies when trying to design and build a plane. As you make design decisions, these decisions will have the effect of limiting your options as you move further into the design process. At this point in the design it seems that you have made the following decisions:
(1) Wingspan can't be more than 60cm
(2) Plane needs to be scale (so the fuse diameter is limited by the wingspan to 31 mm at its widest point)
(3) Plane needs to be powered by EDF (based on the "no pusher props" decision).
This basically leaves you with, and locks you into, the 30mm EDF option mounted in the fuse at its widest point with the exhaust going through the end of the fuse which needs to be open (although there might be some 25-28mm options also available, but as you start looking at smaller and smaller EDFs, the thrust is going to fall short of what you need for the build).
That being said, I think this is a doable project at 60cm and a 28-30mm EDF mounted in the middle.
So some questions would be:
Do you have a budget for the build?
Is there any flexibility on the wingspan (can you go bigger)?
Would you consider micro motors (like the really small quad brushed motors) with props mounted on the nacelles?
What build material are you planning on using (I recall you said you were in Africa in a different thread and I don't know what foam / foamboard you intend to use).
DamoRC