2024-03-18 AEAC Sync

Attendance

Mechanical:

  • @Evan Janakievski

  • @Smile Khatri

Electrical:

  • @Neel Patel

  • @Nolan Haines

  • @Jerry Tian

Embedded Flight Software:

  • @Sam Zhang

  • @Yuchen Lin

Autonomy:

  • @Maxwell Lou

Operations:

  • @Georgia Vachon Westerlund

Directors:

  • @Megan Spee

  • @Nathan Green

Agenda


General updates

 

Propulsion + Control

Action items / blockers:

  • Check LED board progress

  • Ordered XT30 for gemini board, don’t know when it will arrive

  • LED board discussion this week

Updates:

  • < Decision documentation >

Mech

 

 

Electrical

Batteries Ordered

8x 6200mAh 6S 60C LiPo batteries have been ordered and should arrive this week

 

LED board

follow up on this next week re: signal integrity?

EFS

 

 

Sensing

Action items / blockers:

  •  

Updates:

  • < Decision Documentation >

Mech

Houston Rangefinder Mount

  • Almost complete, can be ready for next flight test if needed

Temporary mount exists

Design exists, can get this on Houston in the next 2 weeks (requires also editing landing gear)

Electrical

Rangefinder Harness

  • waiting for rangefinder order to arrive

  • it has arrived! Ready to work on. Would be cool to have ready for this weekend

EFS

OFS Config

Cameron configured it last week before flight test

  • Heard the OFS wasn’t working well in the flight test?

  • left on ‘op flow only’ settings

Any more sensors that need to be configured this week? no

Autonomy

 

 

Video System

Action items / blockers:

Updates:

Mech

Mounts

  • Will work on video system mounts for OSD and mux if needed

VTX mount being worked on

We need a new mount that has both cameras nice and close together to reduce wire runs. Will discuss in mech meeting.

Electrical

VTX Wiring

  • Aiming to reduce noise in the VTX camera muxing harness, shorter lengths == less strange noise / interference

EFS

OSD config

Heard OSD got cut off in the flight test

  • being solved by mechanical and electrical

Autonomy

LTE Communication

  • All image format encoder have been benchmarked on raspberry pi

    • HEIF took too long, JPEG was fastest

to discuss more in auto meet. probably will use jpeg for image encoding

CV camera works

Command + Telem

Action items / blockers:

Updates:

Mech

Gemini case

someone is working on this

Electrical

ELRS Gemini PCB

XT30 still has not arrived yet. Reordered more connectors

EFS

ELRS for comp

  • @Aryan Kashem will be focusing on tracking antenna tasks. No longer on Gemini telemetry debug

  • Currently have no one working on Gemini telemetry debug or LRS

Autonomy

Pathing

Pathing works as expected on Houston during flight test

TODO: Integrate auto landing with pathing

Last command in sequence was return to launch point. We need to use the auto-land sequence. Ideally run this during next weekend’s flight test (comp sim)!

Airframe - General

Action items / blockers:

  • Waterproofing, new cabin, seats, cargo area

Updates:

  • < Decision Documentation >

Mech

Pegasus 2.0

  • New Pegasus is making progress, machining of center block is complete

  • Only arm connectors and landing gear parts are left, assembly should begin soon

  • Hardened steel gears for 3D printer have been ordered to allow us to print using carbon fibre filament. They will be installed when they arrive and we will print the remaining parts for Pegasus 2.0

^ last week

Cabin being redesigned

Center block and arm connectors are done

Assembly beginning soon!

Waiting on landing gear redesign

Waterproofing to discuss in mech meet @Conall Kingshott

Electrical

Schematics

Pegasus schematic cleaned up, comments left by Daniel were addressed. Mena will continue to update schematic with sensors.

  • ongoing: still moving things around. adding rangefinder, etc.

 

houston harness cleanup

  • shortening the cables

EFS

Lighting Board

  • Owen successfully flashed the firmware on the board, but the lights are not working consistently

  • Figure out there is signal integrity issue, still don’t know the root cause

Autonomy

 

 

Tracking Antenna - General

Action items / blockers:

  •  

Updates:

  • < Decision Documentation >

Mech

Improvements

  • Mounting improvements for stabilization almost complete. Need to double check measurements for yaw-servo dimensions with CAD. Going to order metal by either today or tomorrow.

  • May need help with machining this weekend as I need to head home. Will reach out to mechanical members shortly.

  • Assuming all goes, will be finished this weekend hopefully Saturday.

 

Question for EFS:
When will testing for the Yagi Antennas be ready?

  • haven’t been tested

  • it’s ok to just throw them on untested

Electrical

custom PCB

needs to be reviewed

 

Arduino antenna

@Nathan Green made an arduino tracking antenna PCB

@Nolan Haines reviewing it a bit

Nice

EFS

Arduino Tracking Antenna

  • Heard they integrated the new NEOM8Q GPS into the tracking antenna, and it had worked well

  • What is more needed for arduino tracking antenna?

GPS working well

EFS will test the yagi. how to test it well?

  • if we have all the cabling we need

    • ELRS gemini link stats working

    • logging all these link stats

  • fly 1 path with omnis

  • fly 1 path with yagis

  • see if there is improvement in signal!

 

omnis vs yagis swap out completely. then mix and match to see what happens. (optimize it!)

yagis - show how well tracking works

omnis - baseline.

goal is to be better than just the omnis

Autonomy

 

 


General Updates

Autonomy Image Labeling Social? - tabled for now

 

  • @mech to run weights/ barbie equivalents in the cabin! @Smile Khatri @Alison Thompson

Flight test schedule

  • Comp sim 1 - Mar 23

    • make sure everyone’s clear on how competition should work

    • make sure things like checklists, general workflow, task distribution

    • run through mock task 1 and task 2

    • probably will switch up the flightline members for fun

    • checklists should be optimized 2024-03-23 Comp Sim #1 | Checklists

      • @Nathan Green @Yuchen Lin heavily participate please!

  • end-to-end test weekend after this.

    • to ensure all subsystems are working the way we predict.

  • Comp sim 2 - April 6

    • Nail it down harder

 

  • Comp sim 3 - next term

    • rock and roll

 

Want to run tests in as many conditions as possible.

  • hot weather

  • terrible weather

  • rain if waterproofing is working ok (kinda risky though)

  • comp sim where you simulate certain failures: LTE dropout, device failure, telem drop, etc. nail down all the contingency plans. break out the redundant systems

    • important to simulate this with flight line team.

 

 

  • auto landing

  • pathing

  • vtx system