Welcome once more!!! Today we will talk about the primary piece of the entire Quadcopter/Multirotors framework. Here we will find out about How to pick Propeller for your quadcopter/multirotor and RC Plane. Before thinking about What is Propeller you must know the nuts and bolts of Quadcopters or UAV or Multirotors. As we are talking about How to pick Propeller for your quadcopter/multirotor and RC Plane so we must know the about the framework on which we need to execute it.
basics of Quadcopters or UAV or Multirotors
Choose Propeller for quadcopter/multirotor & RC Plane
To select a right propeller for your multirotor is little bit difficult task because of its aero foils shape which decode what it does either it pull air or push.
Propeller
As indicated by Wikipedia:- A Propeller is a kind of fan that changes over rotational movement into push and transmit the produced power.
Because of the airfoil-formed sharp edge there is a weight contrast delivered between the forward and back surfaces of the airfoil-molded edge, and a liquid, (for example, air or water) is quickened behind the edge.
Lets clarify this definition by softening it up 2 half's:
1st Half
A propeller is a type of fan that transmits power by converting rotational motion into thrust.
T=k.
Where
T= Thrust
k = Constant, which depends upon numbers of parameters (Frontal area of propeller, density of air, etc.)
ω = Angular velocity of prime mover to which propeller is connected,
Prime mover may be Diesel engine, 3 Ф brushless motor in multirotor
2nd Half
A pressure difference is produced between the forward and rear surfaces of the airfoil-shaped blade.
Description of propeller
Propeller is specified by 4 digit number written on it like 1245, 8045, 6045, 1680, etc.
What does this 4 digit no means XY UV
XY- Diameter of propeller in inch
UV – pitch of propeller in inch
For example
1245 means a propeller with 12 inch diameter & 4.5 inch pitch
8045 means a propeller with 8 inch diameter & 4.5 inch pitch
How to choose a propeller
Propeller, Motor and LIPO battery will work productively when its blend is "right".
Alternatives A: Select Propeller first and choose engine and Lipo battery as needs be.
Choice B: Select Battery first and choose engine and Propeller in like manner.
Choice C: Select Motor first and choose Lipo Battery and Propeller in like manner.
Simply think which choice will be right???
Right Option Is "C"
As Motor is capable to turns propeller and it pull back force from battery so begin from engine… .
Engine have some appraised push with indicated propeller and LIP
For Example:
Turnigy D2830-11 1000kV brushless Motor
It implies you will get greatest push (890 gram) and most extreme productivity with either 2 cell and 1070 propeller or 4 cell and 8040 propeller.
On the off chance that your Quadcopter surmised weight is 900 gram including everything so from Golden principle you need aggregate of push = 2*900= 1800 gram push so every engine need to contribute 450 gram push.
Which is very nearly half of most extreme push.
Steps to Select propeller
Step first : Calculate inexact weight of your multirotor including engine Lipo edge even stray pieces everything. (say X gram)
Step second : Multiply 2 with computed weight in step first to consider drag and additional push for acrobatic.(2Xgram)
Step third : Divide by no of engines for ex. Quadcopter (4 Motor ) , Hexacopter (6 Moto ), Tricopter and so on.
2X/4 = .5X gram (Thrust of every engine)
Step fourth: Select LIPo Battery from manual of Motor.
Step fifth :Chose Propeller as indicated by LiPo
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