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UAVs for Environmental Science - Coursera online class
www.coursera.org/learn/drones-for-environmental-science/
eCalc tool for RC plane calculations
GENERAL SG RESOURCES
HELPFUL/INTERESTING YOUTUBE CHANNELS:
Rctestflight - https://www.youtube.com/@rctestflight
Project Air - https://www.youtube.com/@Project-Air
Samm Shepherd (RIP) - https://www.youtube.com/@SammSheperd/videos
Samm Shepherd has a bunch of great videos for learning RC basics; here are some of my favorites;
If you want help with terminology, watching tons of RC plane/drone videos can help you familiarize yourself with them. I might make a “dictionary” if I have time.
Electricity basics:
Watts = Volts * Amps
Volts = V
Amps = A
Watts = W
Add milli- to make it 1/1000 (ex. 5mV = 0.05 volts)
Amps are also sometimes called “current.”
“Draw” is the term for using amps; ex. This motor draws 40 amps when spinning an 8x6 prop” ===> the motor is using 40A from the battery
Battery basics:
mAh = milliamp hours; measure of the CAPACITY of a battery
V = volts; measure of the “power” of the battery
S = cells; directly correlates to volts; 1S = 3.7volts (4.2 volts when “fully charged”); we are using 3S for project UVAV
“LiPo”; abbreviation used to describe lithium-polymer batteries
C rating; kinda hard to understand and not very useful, but is basically how any amps the battery can output without burning up. A low C rating is only bad when paired with a small-capacity battery (C * mAH = max amp draw)
Motor basics:
kV = 1000 RPM per volt (ex. 1000kV motor on 11.1v can produce 11,100 RPM at no load at full throttle, theoretically.) —-btw, do not confuse kV with KV. capital K means kilo, KV means 1,000 volts (3KV = 3,000V), we never use KV in this field/hobby
Lmao thats basically it
Propeller basics:
How to classify props? –
AxB (sometimes stylized as A0BC) where A and B and C are integers
A = the diameter of the propeller in inches
B/C = pitch of the propeller, also in inches(?) which I don’t really understand, but higher pitch number means more thrust but more amp draw
Ex. 8x6 (or 8060) propeller has a diameter of 8 inches and a pitch of 6
IMPORTANT: PROPELLERS ARE MORE IMPORTANT THAN MOTORS FOR THRUST!!
A small, slow, weak motor spinning a large, high-pitch prop produces exponentially more thrust than an overpowered motor spinning a small prop. Always check thrust and amp draw specifications when buying motors.
RC Plane parameters/guidelines:
T/W should be at least 0.5:1
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