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SESSION OBJECTIVES

Guide

Result

Frame shape

Rectangular carbon fibre frame is popular (twin boom model). provides stability to quad frame

Single fuselage easier to handle centre of gravity calculations

twin boom

  • with rectangular CF frame to mount quad motors, stable

Cabin layout: barbies + batteries

6 barbies. Pick dimensions, figure out loading mechanism and way to secure them in seats

batteries are not in cabin. just barbies.

cabin that has a door on one side that opens to 3 rows of 2 barbies each

1kg of barbies plan for

flat top of cabin. rounded sides. flatness of bottom depends on landing gear attachment

door that swings down and becomes steps. 3 barbie seats wide

Batteries

possibly custom lithium ions. Whether or not they need to get replaced.

on top of fuselage/somewhere else

This means they can

  • up to 50% more energy dense

need some power in the plane while the batteries are getting swapped. for ZP3, the passover is where 1 battery is swapped at a time.

Want to be able to quickly change batteries in Task 2

Airfoil shape

Will require some research. Actually do some of the research here (just pick one from a website probably)

Looking at model RC airfoils not passenger planes

Naca airfoil https://en.wikipedia.org/wiki/NACA_airfoil

airfoil/exact wing shape can be changed, make the joint universal

  • Will be using foam not CF

Materials/mass for each part of plane

Carbon fibre. what portion of the plane will be carbon fibre? And how feasible is it to manufacture this in 6 weeks? (or should we go for entirely foam wings etc)

carbon fiber - find sponsor for chemicals

will not be done for 6 weeks. use prototype materials:

  • foam

3.3 kg of electronics

leaves 1.7kg for entire airframe.

1kg of barbies

Locations of motors

Just put numbers to the dimensions, like how far forward the motors should be. DON’T assign this for research later, do research now and take the best guess (think about general prop size)

Also consider push motor location

depends on COM

Scale of plane

Wingspan, nose-to-tail dimensions. Remember more wingspan adds more weight. Ideally between 2-3 meters.

30 inch fuselage, 10 inch square.

80 cm fuselage, 25 cm square (height and width)

wings

2.4 meters

40 cm wing chord

Landing gear

VTOL, so relatively basic landing gear. how it attaches/ where it attaches

centered around COM, close to it. Not to overlap with landing pad edges

helicopter skid idea

Decide later for exact numbers.

off the shelf would be structurally nice

Control surfaces

Decide which ones we need. Rough estimates of sizes of each (websites will estimate this fast for us)

use websites to calculate estimations based on wingspan and wing areas. structurally flaps are between boom and fuselage

INTRO to mass budget

(will not have finalized. but crunch some densities or whatever and find a number for an empty frame)

not rn

CAD and assigning tasks - project manager for MAIN CAD ASSEMBLY is Conall Kingshott. This means if there are new parts to push to the assembly, he’s the go-to person to help with this, and he manages how the parts integrate w/ each other

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  1. FOLLOW THE NAMING SCHEME 🙏 CAD Guidelines

  2. Come to the CAD sessions this week! Every evening from monday-wednesday from 7-9:30pm (tongue) !! drop in so come when you can, leave when you need to, Megan Spee will be running them in-person @ bay and Matthew Visser running joint ones online simultaneously in #mech VC

  3. Make a task list RIGHT NOW on the google sheet. sign up for things!

Inside fuselage

  1. door

  2. stairs

  3. attachement to wing spar

  4. bottom camera (how to implement - drilling hole)

  5. front camera

  6. landing gear

  7. seats for barbies attached

  8. lights around fuselage

  9. wire routing

  10. electronics

  11. batteries on top

hardware in fuselage: electronics and sysint

  1. PCBs

  2. ?? check

This week, besides CAD

  1. Motor, battery, prop calculations coming up

  2. CoG calculations etc coming up

  3. Ground tower architecture coming up

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