2023-09-26 AEAC 2024 Sync

2023-09-26 AEAC 2024 Sync

Attendance

Directors:

  • @Anthony Luo

  • @Daniel Puratich

  • @Megan Spee

Mechanical:

  • @Alison Thompson

  • @Arjun Mandair

Electrical:

  • @Mena Azab

  • @Neel Patel

Flight Test

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Embedded Flight Software

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Autonomy

  • @Mihir Gupta

  • @Amy Hu

Others:

  • @Georgia Westerlund

Announcements / Admin

  • CONOPS SYNC WAS GOOD

  • FILL IN ARCH DOC

    • @Anthony Luo to explain structure & scope again at end of meeting

    • 2024 System Architecture

      • locked down in ~2 weeks from now then we will go into RFC

Action Items (we do these right now and assign immediately)

  • @Georgia Westerlund Structure completed by October 1st AEAC 2024: Phase 1 Proposal

    • Will be made in Microsoft word: <link>

  • @Anthony Luo Doing lidar sensor choice. Will create a doc with conclusion by Sunday.

  • @Michael Botros Wiring diagram to be updated for what we’re going to have wired up for primitive system should be ready for review by this weekend.

  • @electrical to review Tracking Antenna Status & Mechanical/Electrical Components and ensure tracking antenna hardware is correct

    • EE to update what is going on the tracking antenna

Updates / Blockers / Finished items

  • Document structure proposal: https://uwarg-docs.atlassian.net/l/cp/ouA1b08i

  • Need to determine which sub-teams are responsible for each section

  • Need to determine due dates to keep us on track: (try and complete before christmas break)

    • Skeleton/outline - due October 1st (?)

    • Draft - due early/mid November (nov 6th ish)

    • Review - due early December (dec 6th ish)

    • Final - due January 15th

Airframe ON TRACK

  • Generally on track, no significant changes of note.

  • Mech to look at reducing weight, but those reductions will be limited

    • Baseframe + Motors (carbon fiber, aluminum, 3d printed stuff, motors, PDB, ESC, Wiring) 4.2 kg

    • ~1.5kg of electronics so far no jetson/rpi/gemini/payload/radios

    • Batteries @ 850g each → 6 batteries -> 9.2kg total drone (5.1 kg of which is batteries)

    • no cabin, no jetson/rpi/gemini/payload/radios

  • Weight is a problem

    • 15kg limit per comp but we aim to be much below this

    • Mech looking at weight reduction

    • 8 kg goal, 10kg abs max is everything included (including barbies)

      • if we exceed this it will be problems :d

  • Once flight tests need to decide 4 or 6 batteries and ensure we get flight time we want.

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Payload NOT STARTED

  • Some ideas/inspo:

  • The first design seems really simple to integrate onto the current air-frame and very manufacturable.

  • We have some ideas to allow it to be pretty easy to iterate on the wall shape (ie flat, curved, etc.) according to aero sims + testing. We would like to have “hot-swap” aero components so we can get something easy done quickly, then work on more advanced stuff in parallel with other subteams' use of the drone

  • A few ways cargo could be integrated, cargo compartment below passenger compartment (maybe stairs somehow a part of this??) or behind like the first image. Could also sell this as a “safety” feature?

  • Curved thin polycarb or something similar is easy to do for windows and looks pretty cool

  • 3 Face curved CF plate (2D) - Needs a glass fiber fold for reusability

  • PLA Hinge/clips to secure the plates

    • Version 1 - clips between top and bot plate using the square cutouts

    • Version 2 - full custom push clip solution - more ridged but might block batteries depending on the config (4 in X will be fine, 6 maybe not)

    • Finalizing the CAD and fitting, will get them printed in BLACK

    • The pieces will be epoxied to the CF Plate

    • Scaled down a version to 66%, its weaker but way smaller (3g per connector vs 10g)

    • Final decisions still need to be made

  • CF plate research still needs to be done

  • Negative CAD mold not complete yet - But it should be quick

Aerodynamics In pog-ress (pog)

  • Started looking at Ansys Fluent simulation

  •  

  • Planning to run simulations on the drone in the next two weeks

  • Starting in a new software, could try stripping some things down

Sensors WAITING DESIGN REVIEW

  • Critical for flight and will go on drone:

    • 2x GPS

    • 1x OFS

    • 1x Lidar (downward facing)

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  • Omnidirectional object sensing/detection

    • 4x unidirectional lidar vs 1x rpa1

      • rpa1 heavier

      • unidirection

        • tfmini

        • 45 deg from each other

      • plz write constraints, plz dont change them after

      • below is diagram for unidirectional ones

      •  

    • Used for landing near those shipping containers at comp

  • @Anthony Luo is going to research and make this decision by the end of this weekend and will make a document. Will ask for review on Sunday.

Harnessing Delayed

  • On pace for Spin up this upcoming Saturday.

  • Battery Harness + ESC + Motors + PDB + FC + Power monitor are wired and tested.

  • Diagram status

    • Have the components we are flying been determined/confirmed?

    • Current diagram could go in Arch doc? Maybe too much of a sketch?

    • Altium is started.

    • @Michael Botros is doing Altium currently.

    • Up to what we’re going to have wired up for this weekend should be ready for review by this weekend.

  • Anyone interested in bulk capacitance?

  • Where, how many, MPN, why?

  • Ping @Daniel Puratich if u wanna do this, I can provide some details.

Gemini delayed In pog-ress (pog)

  • @Farris Matar (Deactivated) has ordered the required components.

  • https://discord.com/channels/776618956638388305/1155994338581565450

  • 3 week shipping + 1 week assembly estimated

  • COTs Gemini exists now but it kind of sucks compared to what we designed but it is an option if ours is a challenge

    • Ours is a lot better

  • EFS, led by @Aaditya Chaudhary (Deactivated) , should be ready to flash by assembly

  • EFS meeting today to sync on COTs stuff

Antenna TrackerIn pog-ress (pog)

  • Currently undergoing small revisions. Will start ordering components shortly

  • We were having trouble with gear compatibility but we are confident we found compatible gears

  • Working on redesigning the Yaw Servo Mount to withstand a higher load and reduce wobbliness. Manufacture out of Aluminum.

    • Will undergo review tomorrow

  • Next steps consist of creating the electrical mounts and weatherproofing

  • List of Electrical Components (Tracking Antenna Status & Mechanical/Electrical Components )

    • EE please take a look and add any other electrical components I’ve missed to the document attached above

    • What size battery? → 5/6s (old comp drone batteries?)

      • bake in as much flexibility as you can

    • I know that we used a perf board on wiring the components together for the first revision. How will we be connecting them moving forward?

  • Where are we stationed with respect to the map? I am trying to figure out if infinite rotation is necessary

    • No infinite rotation needed

 

 

  • @Nolan Haines & @Nolan Haines Leading the nucleo shield project

  • @Daniel Puratich Battery info:

    • Size for our large 6S we use for flight

    • Should be less than that but we need to test to figure it out

    • Size big for now and leave flexibility

  • No slip ring for first version

  • Perf board is for EFS prototype

  • Most components selected, moving onto schematic phase

  • still some minor features like rpp need to be selected

  • @Hardy Yu Doing a fun low voltage LED

  • @Daniel Puratich Supporting any circuits questions for this project

  • Possibly bring in another EE to help with the components here!

  • @Yuchen Lin Driving this.

  • one last try on BMX160 software (due next week)

    • if not working will find a off the shelf solution asap and replace the bmx160 system

    • VN-300 or some other cots sensor.

  • starting tracking antenna software integration next week

Auto-landing Not started

  • Just received objects that will need to be detected on the ground

  • Plan on training a new model for the upcoming competition

  • Working on command output to flight controller and polling if a mission is completed.

  • Need to discuss decision model. Will be simplified.

  • We have it working by using a USB-TTL cable

  • Working on purchasing another USB-TTL cable for Autonomy Airside

  • Reading through documentation and figuring out how we can pass data to groundside to the airside system

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Pathing

  • Scoped out how we want the system to run

    • Will define the system more and assign a PM to this task in a future meeting this week

  • Scoped out how we want the system to run

    • Should be very similar to what we did in the Summer term

    • Flight test this weekend to test out the code we worked on in the summer

      • Will validate that we can successfully upload mission to the drone.

    • Will define the system more and assign a PM to this task in a future meeting this week

Testing goals for near future

  • Done

  • Super pog EE team

  • We have lots of people done but we haven't gotten interface for booking yet

  • Can run in 1401 for small spin up

    • or bay with everyone out lol

  • @Hardy Yu Running this for September 30th

  • Need to check emails if we have this

 

Arch Doc

  • Announcement regarding the doc from @Anthony Luo

 

 

 

 

 

 

 

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