Make a carpet undulate like Alladin's - I'm stuck

[Josh Merrow]

Hi everyone

I've got some students who want to make a flying carpet vehicle for our annual kinetic sculpture race. They can make a steel chassis powered by a bike hub motor, topped by a carpet - but I'm stuck on how to make the carpet undulate. What comes to mind - the "carpet" is comprised of wooden slats (lath maybe) connected with fabric, so it's flexible, and there's a big, slowly rotating corkscrew underneath the carpet aligned perpendicularly to the slats - seems a little farfetched. Hopefully I'm not seeing something obvious. 

Anyone have any ideas?

Thanks!

Josh

[Lisa Heineman]

The first thing that comes to my mind is to use cams to vary the height of the slats creation an undulating motion. The cams could be in the middle, or they could have one at each end of the slats - moving together or opposite the other end. This picture shows a similar motion:

Lisa Kunkle Heineman, MSME, MEd

Mechatronics Instructor

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[Patrick Murray]

Off the top of my head I'm thinking some type of automata set up.

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Patrick Murray
Lower School Interdisciplinary Integrator
pmu...@riverdale.edu
718-549-7780 x4303

On Tue, Apr 2, 2024 at 8:33 AM Josh Merrow <jme...@riverdale.edu> wrote:

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[Paul Meinersmann]

Maybe a series of offset cams on a shaft.  Something like this automata (at the 6 second mark): https://www.youtube.com/watch?v=foFWQnfyxpE.

Thank you,

Paul

Paul Meinersmann Technology & Makerspace Director St. George Municipal School Unit 65 Main St, PO BOX 153 Tenants Harbor, ME 04860 mobile: 207-975-3043 school: 207-372-6312 Pronouns: he/him/his

On Tue, Apr 2, 2024 at 8:33 AM Josh Merrow <jme...@riverdale.edu> wrote:

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[Clint Johns]

If the goal is to be lifesize for the kids to sit/stand on, perhaps have the facade of a carpet undulation on either side of the person with separate cams for each which decreases the amount of oomph needed to make the whole system rotate with as minimal an applied force as possible, preserving the most power for the drive train.

Continued success in all you do,

Clint Johns (he/him/his)
Woodside Priory
MS/US Robotics Head Coach
Computer Science Department
STREAM center + Tinker Lab

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[Josh Merrow]

Thanks everyone! Cams look like the way to go. Hopefully I'll have pix to share in a month or so.

Best

Josh

On Tue, Apr 2, 2024 at 9:51 PM Kim Fogarty <fogar...@gmail.com> wrote:

Ditto to Lisa’s ideas. I immediately thought cams - that turn rotary motion into linear motion. 

Kim Fogarty

Sent from my iPhone

On Apr 2, 2024, at 11:01 AM, Patrick Murray <pmu...@riverdale.edu> wrote:



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Josh Merrow
Middle and Upper School Visual Arts, Coordinator of Creativity
jme...@riverdale.edu

Acting CEO, Safety-Flo, Inc.

[Kim Fogarty]

Ditto to Lisa’s ideas. I immediately thought cams - that turn rotary motion into linear motion. 

Kim Fogarty

Sent from my iPhone

On Apr 2, 2024, at 11:01 AM, Patrick Murray <pmu...@riverdale.edu> wrote:



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[Lisa Heineman]

Yes, please share -this event sounds amazing!!!

Lisa Kunkle Heineman, MSME, MEd

Mechatronics Instructor

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