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changes.mady.by.user Yuchen Lin

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changes.mady.by.user Daniel Puratich

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titleWeek Before Checklist
  •  Raspberry Pi can collect images with the $200 CV Camera
    •  Test the imaging repository with the Raspberry Pi and confirm images are taken and stored on the SD card
    •  Edit the rc.local and ensure that image collection code runs on Raspberry Pi startup
  •  Raspberry Pi can be powered onboard the drone. Need help from the Electrical team.
  •  Raspberry Pi and $200 CV Camera are mounted onto Houston. The $200 CV Camera needs to be pointing in the downards direction.. Need help from the Mechanical team.
  •  Flight test location booked
  •  Drone Registration -
    •  Houston
    •  Tubie
    •  Pegasus → flying on vanny registration
  •  Ensure we have good props for Pegasus after last tests crash
  •  Telemetry Verified Functional - Nathan Green to verify with new LTE connectors
  •  Nolan Haines Schematic for and delegating manufacturing of anti-spark connector configuration
  •  Daniel Puratich to update template with all the new things he added to this template this time
  •  Nathan Green add to Onedrive logs from last time
  •  Georgia Vachon Westerlund uploading past test images to onedrive media
  •  Conall Kingshott potentially slop on landing gear
  •  Hardy Yu purchase request for more crossfire Rxs
  •  Pilot scheduled - Daniel Puratich
  •  Test Plan - Daniel Puratich
  •  Initial frame parameters set - Nathan Green
  •  Verify we have wrestrc card
  •  Systems test - Daniel Puratich
    •  Check flight controller orientation - Nathan Green
    •  Check motor spin & rotation direction - Nathan Green
      •  Check DSHOT configuration (DS300, bidir?)
      •  Motors plugged into correct pins on pixhawk
      •  Verify motors 1,2,3,4 in motor test go in the correct order
      •  Verify motors in a,b,c,d configuration is correct order
      •  verify rotational response of motors is correct (with more than just audio), move the drone around and check each motors reponse individually
    •  Check transmitter mappings
    •  Verify communication links
      •  VTX/RX - no video on any of these aircrafts
      •  Controller
      •  Groundstation
    •  Ammeter working - Nathan Green
    •  Verify data logging - Nathan Green checked SD card, its working
  •  Transportation logistics finalized
  •  Setting Failsafes, Nathan Green
    •  normal failsafe set to land
    •  disabled battery failsafe, dont want it to randomly land
    •  GCS failsafe set to always land after 5 seconds of no GCS
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titleMorning of Checklist
  •  Confirm the Raspberry Pi is securely attached to the drone.
  •  Confirm the image collection software runs when the Raspberris powered on.
  •  Nathan Green configuring the GPS so both GPS’s are used
  •  Nathan Green Setting the controller profile on the radio master
  •  SDC Vehicle key collected → machine shop is closed, we will not be able to grab the key Hardy Yu
  •  Batteries Planned for (DON'T LEAVE CHARGING OVERNIGHT)
    •  Drone batteries & spares - 2 sets for pegasus, 3 houston batteries
    •  Transmitter batteries - 70% on transmitter
    •  Battery tester/indicator
  •  On-site kit together - Daniel Puratich announcing checklist
    •  First Aid Kit
    •  Ground station if applicable
    •  Laptop
    •  Antenna / Receivers
    •  Transmitter
    •  Extra Water
    •  Power cords / Extension cables
    •  Wrenches - none needed
    •  Allen keys (metric ones) - three sets
    •  Knives
    •  Tape
    •  Rope/string - not needed
    •  Zip ties
    •  Velcro
    •  Radios
    •  Safety goggles - not needed
    •  Fire extinguisher - we dont have one, theyre out of our budget gg
    •  Spare foam - not needed
    •  hot glue gun w/ hot glue stick - not bringing that
    •  harnesses
    •  ratchet set
    •  battery removed for velcro (thin 3d printed thing) for pegasus
    •  Wrestrc
  •  Airfame assembled
  •  ESCs/flight controller wired
  •  Radio equipment tested
    •  Channel mappings
    •  Flight modes
  •  Motors tested
    •  Check DSHOT configuration (DS300, bidir?)
    •  Motors plugged into correct pins on pixhawk
    •  Verify motors 1,2,3,4 in motor test go in the correct order
    •  Verify motors in a,b,c,d configuration is correct order
    •  verify rotational response of motors is correct (with more than just audio), move the drone around and check each motors response individually
  •  Wiring secured (Harnessing)
  •  End-to-end test (neglecting props)
    •  Props require a little gold ring which we did not use during the strap down test, may have caused extra vibrations.
  •  Check the center of gravity - CG is off quite a bit but because only running two batteries and much less hardware then anticipated it will be reasonable for this test
  •  All components not on the airframe that are required should be in the flight box (e.g. props & prop nuts)
  •  Airframe payload - Raspberry Pi + $200 Camera
    •  Mount to airframe pointing downwards (exact angle doesn’t really matter)
  •  Spare parts
    •  Props
      •  Houston props
      •  Peggy props
    •  Airframe components (landing struts, arms, etc)
      •  wings nuts - n/a
      •  prop nuts
      •  any detached components such as angle mount - none needed
  •  Hardware to assemble these components
  •  Spare Electronics - we dont have much
    •  ESCs
    •  Motors
    •  Flight controllers
    •  Receiver
  •  Ground station Software updated

...

  1. get the flight log and check with Anthony Luo

Debrief

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titleTimeline

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titleData & Data Analysis

  • houston cold battery endurance time: 8 min

  • temp today: 3 degree outside

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titleWhat Went Well?

  • good logsitic solid plan

  • Houston still in one piece

  • Battery got charged and discharged

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titleWhat was less than ideal but turned out okay?

  • we figured out the cold battery is not enough to complete auto tune even with one axis

  • pegasus is not ready in advance

    • sensor not plugged in

    • not knowing how to set up LTE

  • Takeoff in stabilize once and pilot wasn’t aware

    • that leads to a crush- didn’t break anything tho

  • Houston battery performance were greatly affected by cold temperature

Expand
titleWhat major issues occurred?

  • We lost the flight logs by accident

  • Pegasus bullet connector fails

    • the insulation of the wire got rip off

All of these major issues should be addressed via Root Cause Analysis Forms:

Create from Template
spaceKeyFT
templateName2184183815
title@currentDate - RCA for xxx
templateId2184183815
buttonLabelCreate a RCA

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titleAction Items Following Test

Daniel Puratich Directing this section of flight test post mortem!

  •  Nathan LTE lesson - teach more ppl how to set it up
  •  consider battery heater
  •  Fixing pegasus motor bullet connectors
  •  reconsideration of wiring inside arm, it is ripping the insultaion
  •  Daniel Puratich will make an example of good bullet connector
  •  Daniel already emailed about the golden ring spacer for pegasus prop
  •  labelling the rangfinder and ofs connector