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Introduction

 Attendance

Please add your name here if you are present during the meeting! Feel free to add it in advance if you plan on attending.

 Summarizing Recent Flight Tests

  • Daniel Puratich

  • 2023-11-18 Flight Tests

    • Tuned Three Axies successfully on Houston!

  • 2023-11-19 Flight Tests

    • New camera mount pog

    • Flew drone manually

    • Collected images on first flight

    • RPi did not work after that

      • suspecting temperature?

        • if temp was around zero,

      • Low voltage on power

        • possible issue on buck converter or temperature

        • looking at RPi readout

        • should temperature test buck board

        • possibly wiring voltage drop is the issue as well?

      • Should check temperature operating range of all autonomy components as we get into winter

 Competition Admin

Systems

 Airframe Structure

  • Conall Kingshott Nathan Green Jonathan Di Giorgio

  • Frame is currently disassembled following the flight test

    • arms removed currently

      • nothing was noted wearing early

      • should inspect holes? Conall Kingshott will look tmrw, but should be goooooood

    • wear that happened to wires is most likely from monster mount install so not going to focus on correction to the rest of arm stuff

    • awaiting heatshrink for wires to reassemble

  • We considered options for removing thread-to-wire contact in the system

    • Conall Kingshott thinks this isn’t necessary. Do others disagree?

      • Bolts that aren’t threaded on the top in such a way that would address this are not easily available

    • Lots of effort, likely wasnt the problem

 Cabin
 Avionics & Battery Shrouds

  • Andy Zhang Conall Kingshott Alison Thompson

  • Shrouds are made and cut

    • done on bandsaw instead of waterjet bc pre thin

  • layups that were done last week are good

  • Gotta look at connecting them to clips.

    • Will use some sort of adhesive.

 Monster Mount (Sensors: Rangefinder, Optical Flow, & Autonomy Downward Camera)

  • Smile Khatri Mena Azab

  • Going to consider covering bolt threads.

    • Possibly heat shrink?

  • Flight test to test these!

    • see below!

 Aerodynamic Simulations
 Sensors (Non-monster mount)

  • 360 Lidar flight test with Houston!

  • Should consider a mount to get this on Houston?

    • Lidar is very expensive so should have a thought out about mount for this!

    • Anthony Luo to list constraints in a confluence document!

      • Preferably as a subpage to Sensors for generic information

      • Preferably mech requirements live as a subpage to F23 Mechanical Decisions Documentation this is a requirement for mech stuff

      • This process will help mech understand constraints! Process has been explained a lot in individual meetings, possible questions to be discussed later.

 Custom PDB

  • Tom Chiu

  • From last weeks EE meeting:

    • Majority of technical details related to choosing voltage divider values into ADC figured out after taking into account the equivalent circuit in the ADC that contributes to the input impedance.

    • Finishing up LTspice simulation to try to validate proper equivalent input impedance after taking into account the shottky diode and low pass filter.

    • Still trying to figure out pros and cons in deciding to put RPP across the input voltage from the batteries or just the input into the 5V and 12V buck regulators.

 Aircraft Schematic
 Bulk Capacitance
 System Harnessing

  • Mena Azab

  • Bullet connectors soldered and frayed wire repaired.

    • Lessgooo!

    • Inspected by Daniel Puratich all solder joints on bullets look good!

    • Needs heatshrink before arms can be reinstalled

  • Will need to order more 16awg wire

    • unless we know where the remaining wire we ordered in the summer

    • we orderred a bunch, we need to order more!

 LEDs System

  • Neel Patel Parker Lawrence-Valeriani

  • Goal to have prototype on perf-board ready for end of term.

    • Working on schematic design and LED selection currently.

  • Path forward is to run LED part number idea by mechanical once we have them selected

    • This should hopefully be completed within a week or two, before end of term

  • the control circuit will be prototyped first on breadboard then on perf-board by end of term!

 Gemini Hardware Programming
 Tracking Antenna Mechanical
 Tracking Antenna Electrical
 Tracking Antenna Sensors & Firmware
 Object Detection Autonomy
 LTE RPi Setup (Airside Autonomy System) & Camera System
 Pathing Algorithms/Software
 Houston Camera Mount

Admin

 Upcoming Flight Test(s)

  • Hardy Yu Yuchen Lin Anthony Luo Daniel Puratich

  • Remaining Testing Goals before end of term

    • end to end sensors (all of which can be tested in ground)

      • Gemini

      • Video over LTE

      • Calibrate Opflow

      • Monster mount offsets (for rangefinder and opflow)

    • Four vs Six Batteries test (all require test flights)

      • Houston Autotune

      • Pegasus Autotune

      • Pegasus Four Battery Endurance

      • Pegasus Six Battery Endurance

  • Nov 25th

    • same day as open house

  • Nov 26th

  • Remaining possible flight dates for this term:

    • Dec 2nd

    • Dec 3rd

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