2023-10-11 Mechanical Meeting

This Weekend

@Conall Kingshott

No mech work session this weekend.

We will be doing a hover test, so stay tuned and check out the relevant thread.

Frame

@Conall Kingshott

@Smile Khatri and I fixed our fastener woes this evening, so we are ready to fly whenever.

Feet need holes drilled for them and to be mounted.

Monster mount going on for flight test? Not sure yet

Possible shroud/clamping block updates from Andy and Jonathan

No other major changes here.

Antenna Tracker

@Arjun Mandair

• I have updated 2024 Season Pegasus Mechanical Decisions Documentation

  • Includes updates on the project and what has been done so far

  • Feel free to take a look!

• New Servo Mount

  • Cutouts for screw clearance

Open

Open

• I want to order the servo, hex gear, and hex bearings: Servo, Gear Mechanism, & Bearings

  • @Conall Kingshott Are we 100% sure that the gear system and servo will rotate everything?

    • To the best of my understanding, it should. That’s the best I think we’re gonna get. -C

  • Who should I contact for ordering?

    • https://uwarg-docs.atlassian.net/l/cp/x75modjE

    • Talk to Wingchee if you have any specific question after reading that. Try to procure whatever you can. -C

• Started Electronics Mounts

  • Need to modify Buck Converter Mount to add side holes for ventilation

  • Nucleo mount is temporary for prototyping purposes with the Perf Board

  • Should 6S battery mount utilize velcro? I can create slots for this

    • Consider 6S battery 30ft in the air, do not want it to fall on someone

    • I think is is a valid concern. Maybe consider either supporting geometry (Ie: Box) or something like a buckle. -C

• Yaw Servo Able to move everything? https://www.servocity.com/hs-788hb-servo/

  • Should be able to -C

Next Steps

• Anthony and I had a discussion on the Antenna Tracker: Tracking Antenna Status & Mechanical/Electrical Components

• Continue mounting RC and Video Components

• Need to see if I can combine the two or if I need to make two distinct towers

Cabin

@Alison Thompson

• Cabin design still underway!

• Update from AEAC sync, no opposition to cargo bay in the back

• @Evan Janakievski want to talk through skeleton updates? Skeleton My thoughts:

  • My orginal thoughts for seat layout to avoid a middle asile was something like this to allow for a big window in the front, though totally open to nixing that idea in favour of your seat layout (no big window will make assembly easier but may hurt aestheics?) thoughts?

  • I’d suggest that where ever we decide to have the cargo/cabin divide we add another 2 vertical CF tubes to give use something to mount hinge and a divider?

  • For simpicity maybe the divide is also where we have the hinge for the passenger cabin and the back standoff is where the hinge for the cargo bay is? Want thoughts on this, particularly @Georgia Vachon Westerlund

• @Georgia Vachon Westerlund want to talk through your updates in Aero-Panels ? My thoughts:

  • CAD isn’t checked in so I haven’t seen it (maybe add screenshot in the doc when you have the time?) but the sketch in there looks good for the first version!

  • One suggestion, maybe the front and back panels extend a bit back so the top and bottom of them has flat bits to mount with the existing skeleton bolts and then we just use the other mounting method for the side panels? bad paint drawing:

  • I agree carbon fiber is going to be best for most of cabin, will likely want some cut-outs in CF for some sort of clear windows. I see your concern about CF manufacturing being challenging, but I think we want to try making more complex layups with moulds, though router time will be limited, want thoughts from @Conall Kingshott on this

    • Flat panels are all easy. We can do under 12” in the ESMS and over 12” at the EMS. -C

    • 4mm != 4 layers. 8 layers was ~2.75mm. -C

    • We can probably start with super thin panels that are made flat, then just put on to the frame wrapped around something to get the “bent” profile similar to Icarus for the first rev. Open to thoughts though. -C

  • see above convo about doors and windows

• @Aric Quan Want to explain your idea for the aero-panel mounting in Aero-Panel Mounting ? My thoughts:

  • I like this idea so far!

  • What is stopping the pin from sliding out?

  • Alternative to the pin, could do a through bolt and a threaded heat-set insert? tbh this way you may not even need the seconded printed piece that mounts to the panels. bad paint drawing:

  • Want to hear what others think about this

• @Jason Li any seat updates? Seats

• @Wallace Lee are you still interested in doing Cargo Compartment ?