Hi
I want to know Quad Lifting power calculation formula. I've seen all calculators online. I want to know formula, as each returns different values, I have to understand formula and check stuff myself.
I've attached my Quad settings. With these settings, I cannot even get a lift, it doesn't get off from ground but calculator says I can have 1.5kg more payload.
What do you think? Please tell me about formula for calculation.
Thanks
Replies
There is no substitute for actually testing something, but it certainly helps to understand the theoretical constraints in any particular configuration. I'm not a big fan of calculators, since if you're reasonably good with basic algebra, you can figure this out on your own.
The way to go about this is to first calculate the ideal hover power, which is a function of disk area and thrust:
http://diydrones.com/forum/topics/the-case-for-large-scale-electric...
For estimation purposes, you can assume that your actual power will be twice that (FM = .50).
If you want to get more exact, you can see if the University of Illinois has actually tested the prop you're using under laboratory conditions:
http://www.ae.illinois.edu/m-selig/props/propDB.html
Then apply the formulae in this thread to convert the data into actual thrust and watts:
http://www.diydrones.com/forum/topics/propeller-selection?xg_source...
Another one
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Results from another calculator
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