Gliding towards free flight
After my latest attempt at rubber powered free flight, an attempt that we can best describe as having 'mixed results'. Previous attempts ie the "Cardboard Cessna 180" flew but were not durable enough.
Reviewing past posts and the kind comments in this forum, I decided to go back to basics and build simple gliders with 12" -14" span ( about 40 cm) for a start, to work out the aerodynamics and crash resistance.
Initial tests have been encouraging, hope to post some pix of an all card glider here.
What I have learned so far:
Last edited by knlever; Dec 27, 2012 at 11:42 PM.
I am once again involved on several projects at the same time. It seems like it is taking ages, but I have made some progress. I admit the previous post is not very helpful.
It is simply that I have realized that I should build a non - powered version of the model to test flight loads, impact strength, stability and durability.
So I will build:
I have now on my desk a card model that can survive an impact with a brick wall several times ( except for the propeller) .
Getting the airframe right (strong enough and light enough) is a common requirement for Micro EDF, rubber power, gliders and so on.
I have read of an example of a balsa model that got destroyed falling off a shelf. I am not really going to be working with that level of fragility. I don't like working with foam either, though I tried it in my early experiments.
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