Upcoming Team Events

• Houston flight-test this weekend (leave at 11am - return by 2pm)2024-06-29 Houston 2 First Time Flight Test - Flight Tests - WARG (atlassian.net)

  • may be some work involving mounting electronics available

Other Announcements

• Plz fill out team roster form

  • https://forms.office.com/r/ka0MJHJQ9D

PDM Issues

• Lots of PDM issues lately. If you continue having ‘cannot find license’ error then may be worth checking out https://discord.com/channels/776618956638388305/1033816030990041170/1254590928643952661 .

  • Before opening PDM file vault, type ‘SolidWorks PDM search’ in Windows search bar → right click ‘WARG_CAD’ and press ‘log in’. Normally what I do and its been working for me, may not be the solution but worth a shot?

Printing stuff

• Downloaded bambu studio

• 3D Printing Guidelines and Bambu Labs + Prusa Instructions

• CAD design review pls

Electronics Cases

• Pixhawk mount?

• VTX mount updates?

  • Calum made a mount and needs to be printed

• EP2 case updates?

Frame

• Frame Design - Mechanical - WARG (atlassian.net)

New Task

• IMACS Case

  • IMACS Case - Mechanical - WARG (atlassian.net)

Wings

Nathaniel & Thushanth

Link to the page: Air Foil Design

Nathaniel:

• NACA 2412 and 4412 are popular choices for RC planes due to thinner design for lower drag

  • Slight under cambered design provides additional lift

• Is there anything we should initially prioritize?

  • Eg. Low stall speed, reduced drag at cruising, stability

• Ran a quick CFD sim for a NACA 4412 to see if its beneficial for future testing

  • Found L/D ratio of 11.36

  • L/D of around 20 is typically found for RC planes (just wings)

• Possible next steps:

  • Choose some types of wings like: NACA 2412, Semi-symmetrical, Clark-Y, Selig and compare sims

  • Determine some important testing conditions

    • Speed (stall, takeoff, landing, cruising)

    • AOA and other angles to test at

    • Reynolds number (hoping Thushanth can speak more to this)

      • value representing turbulent flow

      • Causes more drag

      • chord length affects Reynold’s number

    • Weight and wingspan → If 5kg and 2ft 4ft is firm, we can design around this

    • Drag and lift scale with velocity^2

• S1223 airfoil

• High aspect ratio for low speed

• 9in chord length → ~5 aspect ratio

• Discuss control surfaces

  • single aileron on each wing

  • t-tail to start off

• AT3530 + 14 x 7” prop

• NACA 6512 → higher camber

• Try one with high camber vs. low camber → gives majority of flight characteristics

  • start w 2 variance for now

• NACA 4412 but w a higher camber

  • change just 1 factor for now