Overview

Project team:	Former user (Deleted) Owen Kim (Unlicensed) Annie Zhang (Unlicensed) Lorraine Zixi Li (Deactivated) Vu Julian Hoa-Chau Huynh (Unlicensed) Rachelyn Collins (Unlicensed) Diwya De Silva Bonnie Yu
Project supervisor(s):	Angela Chao
Stakeholders:	Aerobody
JIRA Link:

Vision

Background Information

MSXII's aerobody will me modular in that it will be made up of a number of separate panels and structurally supported by a spaceframe chassis. In doing so, we minimize the repercussions of a bad layup since a poor outcome would only effect a small portion of the car and could easily be redone. By contrast, about 80% - 90% of MSXI was done in a single layup which yielded unsatisfactory results. Other benefits of this design include smaller molds, the potential for spare panels and the potential for easy access to the car's "internal organs" if there is need for servicing or rework.

Goal

In order to make the the car as serviceable as possible we want to be able to take off the aerobody panels easily. This will require designing a custom interface/fastening system to be able to join a carbon fibre panel to members in the steel space frame. Overall, the goal is to design a custom fastening solution that will secure the aerobody panels strongly in place but allow the car to be stripped of most of it's shell in under 30 minutes to allow access to critical assemblies such as the suspension, steering and electrical enclosures.

For design ideation purposes, assume that the panels will be flat and that chassis members are 1" OD steel tubes.

Project Requirements

Rayce Regulations

These are requirements driven by the Rayce regulations.

Carefully look through regulations for WSC/ASC and find out if anything applies to this project.
Begin by going through section 7.1 of the 2017 FSGP Regulations

Internal Requirements

These are requirements driven by Midnight Sun.

Panels should not be able to come loose due to vibrations under any circumstances
Fastening system must be able to be released from the exterior of the car
Fastening system should be streamline to reduce any aerodynamic interference and turbulence
One unit of the system (i.e. both the aerobody and space frame components) should weigh less than 100g
Must less than 30 seconds to release the fastening mechanism
Releasing the fastening mechanism must use at most a single tool

Soft Requirements

Some items to consider

Ease of manufacturing
Weight
Costs (material, method of manufacturing, etc.)

Ideas and Prototypes

Come up with at least three designs and explain the advantages and disadvantages of each. Include sketches and screenshots of CAD models where applicable.

Author	Sketches	Comments
Former user (Deleted)	1. 2. 3.	This is my initial design presented last week. The main intent of this hinge design is to reduce, or if possible, eliminate disassembly time. There is also a lock mechanism between adjacent panels. 2. Pipe sleeve connected to flaps with hinges. Panel and chassis shaft may be disassembled by unfastening the two fasteners on each end of the flaps, rotating them to be perpendicular with the panel, and sliding the flap down through the fitted slits of the panels. *Not necessary to unfasten both flaps, system may be disjoined by sliding only one flap under the panel to create an opening. This design allows disassembly from up-top. Manufacturing would entail creating the "U" shape sleeve with hinged upper ends, two rectangular flaps also with hinges, and cutting two slits through the panel.
Owen Kim (Unlicensed)	1. 2. 3.
Annie Zhang (Unlicensed)	1. 2. 3.	Bracket and screws, can be welded or not. The shape of the bracket can be changed to leave room between the panel and the chassis. Would be secure, not sure about weight/ease of assembly. Hinges held together with screws. Not sure about weight, could be too bulky. The manufacturing could be an issue. (Side note: the top part could probably just be one big piece, I just made half and reflected it).
Lorraine Zixi Li (Deactivated)	1. 2. 3.
Vu Julian Hoa-Chau Huynh (Unlicensed)	1. 2. 3.
Rachelyn Collins (Unlicensed)/Rachelyn Collins (Unlicensed)	1. 2. 3.
Bonnie Yu	1. 2. 3.

Browser not supported