what is the least reliable component in a UAV?

I know this is hard to answer, maybe even wrongly asked, but the point is to try to enlist and rank among all UAV components, which is more and less likely to fail.

for example:

for a hexacopter:

1. frame structural stability

2. lipo batteries

3.ESCs

4.Autopilot

4.1. CPU and firmware

4.2 Sensors

4.3 connectors

5.Radio receiver and telemetry

6.Motors

7. Propellers

8. connectors and cables

9.payloads

Some of these are critical for flying, others are not but affect the mission.

Calculating the probablilty of failure and the MTBF or MTTF is difficult and complicated, but this forum has lots of data and experience that could be harnessed to obtain some trends.

so, what is in your opinion the part that may fail first or is more fragile?

is there a way to use redundancy? im willing to use two or three autopilots if necessary (plus a supervisor computer). I had a few unexplained crashes and all I can conclude is that it has to do with a slightly larger propeller than the motor can handle that leads to bad sync with ESC.. only sometimes. Solving this would requiere individual current and RPM sensors for each motor (or a smaller prop, maybe a new ESC just in case).

Cheers!

MM

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Activity

Liam left a comment on Agricultural UAVs
"Hi
I'm Liam from T-MOTOR. I would like to reach out to see if there is any possibility for us to work together.
We are a propulsion system manufacturer who offers motors, propellers and ESCs for all kinds of drone applications which vary from secur…"
Jun 30
Richard Cox left a comment on Australia
"Anyone in the DIYDRONES Australian subgroup based in Alice Springs, NT?
I am experimenting with Ardupilot (standard Arduplane), Pixhawk 4 FC in a 4-ch
RC "AXN Floater Jet" foamy plane..."
Jun 29
Omar Sykes left a comment on Australia
"Hi everyone, I am looking for someone who is good at drone building, repair and software in Adelaide. Please give me a call on 0477 319 219."
Jun 29
More…