Well, if you have matlab I have designed an algorithm about the hovering flight - time with respect to the battery properties and the quadrotor weight. If you don't have Matlab I recommend you visit my personal profil in Researchgate
I have a 5 inch propeller designed and up on my account, also have a 2205-2300 kv motor both built to scale on my profile for download, feel free to download.
Vishanth Reddy Kommidi- Achilles
All the info related to drones is in these linkshttp://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.1016.9375&rep=rep1&type=...
Very good information, however very outdated. Great to see how the very first drones were made.