Met with John to discus the proof of concept model and preperations that needed to be made for the presentation model.
I continued to update my Auto CAD model and I started to document and capture the past versions of the model for my journal.
This is my first design, it utilizes the sunroof and cartage design. the piston that pushed the carnage forward, up a ramp would also compress a set of arms that would lift the back of the platform to be flush with the deck. The issue with this design is that it would rely solely on the strength and integrity of the piston for structural support, meaning a single point of failure could compromise the stage.
This is the dissection of the 4 steel bar window hinge that I found in a catalog. The arms of the hinge are each have 3 points of constraint to create 1 compound axis of movement.
I wanted to extend an bar to be perpendicular and flush to the bottom of my platform. A leg extending from the foundation to the hatch would provide significant support vertical compression and not rely on the piston for structural support when in position.
The next draft used the scissor lift idea but got rid of the ramp because it would not work with a single point hinge and kept inverting the platform. This design has four legs and would use cross bars to move the legs simultaneously.
This was reformed into the current design that uses a 2 part ramp to lift the stage to a preset level and then a vertical lift that moves the platform level with the deck as the legs are set into a vertical position.
Fighting with open lab to publish scans is challenging.
PDF’s do not show up as images so I need to save them as images, reformat them to 16bit color, then convert them into jpeg files because bitmap and XPS are insecure formats.
Automated trapdoor: Avoiding Pitfalls
Introduction
I am Andrew Ng, I am an entertainment technology student specializing in technical directions and lighting design. I have created and Automated trapdoor that can operated in a shallow deck and be safe resilient enough for the theater.
Materials and Methods
The trapdoor will be designed for a stress skin trisket and stud-wall deck. I will have a autoCAD model, a one to one proof of concept and several prototypes.
A four step design approach is used to test a hypothesis or design to progress the project to new milestones. It cycles begins with researching, then incubating and developing the approach or hypothesis, executing or building a model to test the hypothesis, they reflecting on the results and returning back to the research step to start the process over again with a new idea.
Results
The project gradually evolved from a theoretical sketches and a brainstorm of unrefined ideas into a computer drafted assembly and physical model that incorporates several existing ideas and patents to solve an novel problem with spacial constraints.
Conclusions
The trapdoor project taught me how to adapt, modify, and revise both my own designs and designs of other people. I learned how to reverse engineer structures into elements the I can use in future projects with drafting and modeling tools.
Literature Cited
US Patent Office R736001R
McMaster Catalog 4 bar steel hinge
Stud wall and Trisket platforms Yale theater PDF
Acknowledgements
John McCullough, Rudy, Remmy, Cortly Dennis, and Angelo
For Further Information
Contact Andrew Ng at Andrewj.ng@outlook.com
Leave a message at # (518)-712-9466
Visit the project website at https://openlab.citytech.cuny.edu/andrewng-eportfolio/
PDF available here: