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piotr-placzek-software / fpv-construction-helper

An app for performing calculations and comparing parts, supporting the construction of an FPV drone
https://piotr-placzek-software.github.io/fpv-construction-helper/
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calculator module development #10

Closed piotr-placzek closed 2 months ago

piotr-placzek commented 2 months ago
piotr-placzek commented 2 months ago

rpm=vbat*kv

piotr-placzek commented 2 months ago

tip speed = (2πR*rpm)/60 R- propeller radius in meters

General guidelines for prop tip speed:

    Too low prop tip speed: This can lead to low efficiency and insufficient thrust, which may prevent the drone from taking off or result in very short flight times.
    Too high prop tip speed: This can cause excessive noise, increased air resistance, reduced efficiency, and a risk of mechanical damage (e.g., propeller breakage). Prop tip speed approaching the speed of sound (343 m/s in air at 20°C) results in a drastic increase in drag and noise.

Typical ranges for optimal prop tip speed:

    Racing and FPV drone propellers: The optimal prop tip speed usually falls within the range of 150 - 250 m/s. This allows for sufficient thrust and efficiency while keeping noise levels under control.
    Filmmaking and photography drone propellers: For these drones, where stability and low noise are priorities, the optimal prop tip speed is 100 - 200 m/s. Lower tip speed helps minimize vibrations and interference.
    Large transport or long-flight drones: For larger drones, the optimal prop tip speed can be up to 150 m/s, reducing air resistance and maximizing flight time.
piotr-placzek commented 2 months ago

acceleration a=F*i/m F-thrust (has to be get from motor specification) i-amount of motors (default 4) m-total weight in kg