StRaNgEdAyS
Well-Known Member
In the process of becoming familiar with the operations of my new CAD program, working within the already familiar realm of Large scale R/C models,I recently did an experiment on the issue of scaling (albeit in the other direction) just to examine the results for myself...
I took one of my large scale model designs (this Baby has a wingspan of almost 3M) and reduced it in scale, right down to the engine thrust...
now I should mention, these particular engines get disproprtionately larger as the thrust factor decreases, so when scaling down the engine therefore appears much larger in relation to the airframe...
this model was scaled down to 1/4 of the original size and even before I add the empennage, I can see it Ain't gonna fly, not without some substantial changes. Most noticably the engines, but also notice the comparative size of the wing foil...
This was just an experiment I did to check out the effects scaling has on these things...
Just to think years of experimenting and toying withg R/C models of varying scales, and I never actually did this before. (probably because The idea of drawing up a plane that looked so much out of proportion and had no chance of getting off the ground just didn't occur to me)
Now there are probably a couple of factors which I have blatanty (and purposefully) ignored, such as, as I scale down the weight of the plane also comes down at a disproportionate rate, so while my size is coming down to 25% of the original model, the weight will end up being less than 25% of the original, therfore I could use smaller engines etc, but this was an exercise in direct scaling, and I treated it as such.
I took one of my large scale model designs (this Baby has a wingspan of almost 3M) and reduced it in scale, right down to the engine thrust...
now I should mention, these particular engines get disproprtionately larger as the thrust factor decreases, so when scaling down the engine therefore appears much larger in relation to the airframe...
this model was scaled down to 1/4 of the original size and even before I add the empennage, I can see it Ain't gonna fly, not without some substantial changes. Most noticably the engines, but also notice the comparative size of the wing foil...
This was just an experiment I did to check out the effects scaling has on these things...
Just to think years of experimenting and toying withg R/C models of varying scales, and I never actually did this before. (probably because The idea of drawing up a plane that looked so much out of proportion and had no chance of getting off the ground just didn't occur to me)
Now there are probably a couple of factors which I have blatanty (and purposefully) ignored, such as, as I scale down the weight of the plane also comes down at a disproportionate rate, so while my size is coming down to 25% of the original model, the weight will end up being less than 25% of the original, therfore I could use smaller engines etc, but this was an exercise in direct scaling, and I treated it as such.