2024-01-22 AEAC Sync
Attendance
Mechanical:
@Alison Thompson
@Conall Kingshott
@Evan Janakievski
@Hao Gao
@Nathan Green
@Sohee Yoon
Electrical:
@Jerry Tian
@Mena Azab
@Neel Patel
Embedded Flight Software:
@Derek Tang
@Hardy Yu
@Sam Zhang
@Yarema Dzulynsky
@Yuchen Lin
@Ayush Ganguly
Autonomy:
@Aaron Wang
@Amy Hu
@Mihir Gupta
@Tong Zhang
@Vibhinn Gautam
Operations:
@Georgia Vachon Westerlund
Directors:
@Anthony Luo
@Megan Spee
Agenda
Propulsion + Control
Action items / blockers:
look at the RFC document after the meeting (all relevant leads)
Updates:
proposal for new batteries (still 4 battery confirmation)
Mech | RFC for new batteries | see ‘updates’ above |
Electrical | 4 battery harness configurations | are we good with the + configuration for 4 batteries
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EFS | Bidir DShot verification |
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| Controls Tuning |
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Kind of propulsion/control ralated, using 4x 6200mAh batteries instead of 5000mAh ones.
The 6200mAh ones cost $96.09 and weigh 895g each (https://hobbyking.com/en_us/turnigy-heavy-duty-6200mah-6s-60c-lipo-battery-pack-w-xt90.html?___store=en_us ).
The 5000mAh ones cost $75.18 and weigh 838g each (https://hobbyking.com/en_us/turnigy-battery-heavy-duty-5000mah-6s-60c-lipo-pack-xt-90.html ).
Using 4x 6200mAh would weigh 228g more (6.58%) while having 2400mAh more capacity (21.43%). It would cost $83.64 (24.42%) more.
Sensing
Action items / blockers:
Sensor calibrate/quality test next weekend @ efs
Mech needs to mount 360 lidar mount on Houston
Houston needs a downward facing rangefinder mount? (can be sticky tack + ziptie)
Needs EFS support
make sure sensor offsets are ok, make sure as much as possible is calibrated before leaving the bay for the flight test
EFS needs pointers on how to do calibration / testing
Updates:
< Decision Documentation >
Mech | Sensor mounts |
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Electrical | Sensor wiring |
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| Conformal coating on PCB |
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EFS | Sensor calibr & quality test |
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| Rangefinder support on Houston |
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Autonomy | Sensing | monster mount holds the camera. Not in a position to test the camera yet - need geolocation working before putting it on Pegasus. Will take place after ground testing with geolocation |
Video System
Action items / blockers:
Waiting for procurement order to arrive on-site.
Updates:
Switching to flywoo gear as primary. This means diversity vrx!!! (unsure if this is better) (needs to be flight tested)
Order has been procured, not in yet.https://discord.com/channels/776618956638388305/1197248910721298592
have 2 transmitters (flywoo and (old ver ))
Mech | VTX Mount | making a new one - not very urgent, someone is working on it |
| VTX Antennas | mount for antennas for VTX system
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Electrical | Harnessing (airside) |
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| Harnessing (groundside) |
more information - check arch doc or EE-specific wiring. Will reach out to people to get a better handle on this project. 2024 System Architecture |
EFS | Ardupilot VTX mgmt |
resources/requirements
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Autonomy | LTE Comms |
Aiming for the 10th to FT |
| admin |
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Command + Telem
Action items / blockers:
Updates:
RFC for control links
EFS critique this document
Mech | ELRS RX (TCXO) |
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Electrical | RFD900x harnessing |
~ a week until completion. 2 weeks to ship, 3 weeks from now receive the board. |
EFS | ELRS Gemini status | Assigned Akam to this task. He aims to start work on 23 Jan 2023 |
| ELRS / ardupilot channel mapping |
Side notes - during ~ 3 weeks of reading week downtime. not urgent
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Autonomy | LTE @ FT |
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| GeoLocation |
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Airframe - General
Action items / blockers:
Updates:
< Decision Documentation >
Mech | Airframe Timeline: | Current due dates for tasks (I’m not gonna read all of these but they are here for visibility):
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| Houston |
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Electrical | Houston power | raspberry pi harness was made from last term, it was supposed to improve the raspberry pi input voltage, not tested its performance yet, will test it Tuesday, Jan 23rd (or sometime later this week) |
EFS |
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Autonomy |
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Tracking Antenna - General
Action items / blockers:
@Arjun Mandair - Servos from ServoCity® Servos, goBILDA, Gears, Motors and More! are to be available in two weeks (Called them). Currently sold out.
Updates:
@Arjun Mandair - The Page Tracking Antenna Status & Mechanical/Electrical Components has been updated and will no longer change.
Mech | CAD and Parts Ordering Status | CAD Review - 2024 Season Pegasus Mechanical Decisions Documentation | Antenna Tracker
Build Status
Funding
Antenna Tracker |
Electrical |
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EFS | telemetry fwd’ing | decide how information is getting from GS to antenna - xbees, ELRS airport, cables?
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Autonomy |
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General Updates
Flight test schedule
Next ft; Jan 27th: https://uwarg-docs.atlassian.net/wiki/spaces/FT/pages/2392489985
OpFlow calibration
magfit check?
tracking antenna algorithm check (on either)
obstacle avoidance check (on houston)
Past that, Feb 3rd: https://uwarg-docs.atlassian.net/wiki/spaces/FT/pages/2399043643
Airspeed / efficiency data for Pegasus
Gemini on Houston
Extended tracking antenna tests on Pegasus or Houston