Monday, March 31, 2014

Medusa PVC Prototype Design and Build


Medusa Project Design

The Medusa PVC prototype is just one phase in the journey to fly our TechShop UAV at this years Autodesk University. The PVC air-frame is being built to test the physical scale of the final design. It will also provide our team invaluable feedback to optimize the air frame geometry and let us test the flight controls and power systems.

Medusa Project Design


Check out how the PVC Prototype fits into the overall scope of the Medusa Project. Medusa Project Workflow Diagram

Medusa Project workflow


Before get started let me say thank you to all the users on RC Groups.Com Scratch Build PVC Forum for inspiring our working model prototype to test for AU submission. Check out there Gallery!  RCGroups.com Scratch Built PVC Gallery

Since the V-tailed Quad copter is related to Tri-Copter geometry I started our design process by researching symmetrical design theory. I ran into a great website that helped me get under way (Link).

Medsua Project
Autodesk Fusion 360 air-frame symmetrical design layout sketches
I started the PVC build by dropping by my local hardware store and purchasing some thin walled PVC schedule 30 3" inch pipe. The scale looks good and the large diameter should provide the necessary rigidity for a 1500mm motor to motor span. In addition I picked up some PVC T's, 45 degree elbows and some end-caps to connect up the frame.


Medusa Frame 3" PVC Thin walled PVC pipe.

As soon as I got home I fired up Autodesk Fusion 360 and layed out the Tri-Copter symmetry, Tested out Leonardo's sketch and then overlayed Eric Nantel's vtailed quad copter design to triple check the our base geometry configuration.
Medusa Project Design robotshop
Eric Nantel's air-frame design superimposed over the Medusa Fusion 360 symmetrical T-Copter layout sketches
Once I had that locked down I created a 3" pipe with a .045 wall and then measured and modeled the tees and the elbows.  I added the tees for the body connections and landing legs and the 45s elbow for the V-Tail rear props.

Medusa Project Design Fusion 360

Medusa Project Design Fusion 360 1

Medusa Project Design Fusion 360 2

I needed to scale down the pipe to a 1" around the prop so not to disrupt the airflow so using a schedule 40 pipe Tee and Cross pipe fitting I got off Grab CAD I designed a simple system to connect the pipes. The hole in the end of the 3" PVC cap allows allows for a 1/8 vibration dampening o-ring and plenty of support to keep the the smaller pipe fixed.

Medusa Project Design Fusion 360 3



Saturday morning I headed out early to the join Harry and the team at the TechShop to start the Medusa PVC build. First things first, we placed the 20 foot 3" pipe on the scale. It measured in a 4lbs. Next using the fusion 360 measurements we cut the pipe to size and tested the prop distance. We made some slight adjustments and connected it together. It was really cool to see it come from design to reality.

Medusa Project Detroit Drones
Harry Arnold from Detroit Drones
20' 3" PVC Pipe 1820 grams


Medusa Project TechShop 1

Medusa Project TechShop 2



Medusa Project Avorto 1
Avorto 3520 KV400 Engines and 17"inch Props from Monto Hobbies.



Medusa Project Avorto 2
Avorto 3520 KV400 Engines and 17" Props from Monto Hobbies.

We should have the final parts in the next weeks and hope to testing the flight by April.

Check out our PVC prototype weights and costs :)

Medusa Weights And Costs




















Wednesday, March 26, 2014

The Medusa Team is Growing! Join Us.



The Medusa Project Open Design team is growing at a rapid rate, so I thought it would be a good idea to introduce all our team members and supporters in a new post. I will continue this practice posting new team members as we move along.

Acknowledgements:
I would like to say a special thanks to the TechShop and Will Brick who’s sponsorship of two 9 month memberships are the core foundation of the Medusa Project’s success.  The Detroit shop is an amazing space filled with new and experienced makers and thinkers all working toward their dreams while freely exchanging knowledge and ideas. It’s such a powerful exciting sense of community and is the most important part of the Medusa Projects mantra Creativity, Cad and Community.

Thank you all for your support!
To join us send me an email eric.pinkel-AT-us.mackevision.com



New Members

Ed Martin: (Supporter/Consultant)  Senior Marketing Manager for Autodesk
I would like to thank Ed Martin to our team. Ed stopped by the Mackevision office last week to get a complete overview of the Medusa Project. He will be helping us create a awareness in the Autodesk ranks about our project and he will be leading the charge to get us on the main-stage at Autodesk University for the Keynote.

Tom Weisz: (Supporter/Consultant) Mackevision Creative Advisor
Tom is a great guy who I have had the fortunate opportunity to share an office with at Mackevision J He is passionate about process and tools that empower creative professional and he has an incredible ability to connect the dots of emerging technology and ground breaking artistic process. Tom has been excited about the vision of Medusa Project from the very beginning and his experience, persistence and network of executive creative professionals make him an invaluable part of our success.

Joseph Wurcher: ( Supporter/Consultant ) Autodesk  AU Program Development     
I contacted Sandy Profeta at Autodesk and inquired about when the submission opening for AU. She passed our project on to Joseph who contacted me with an interest in our project. He is currently acting as a silent observer, but as the AU selection process begins he will be an invaluable asset in our effort to gain admittance to AU. He is also our point of contact for our special request to place the Medusa in a highly visible location during the show.J

Chris Hall: (Supporter/Consultant/Builder) Autodesk Program Manager MFG/M&E
Chris is a longtime friend and Co-worker. Since his role is part manufacturing and media and entertainment He is the perfect Autodesk fit for our creative to CAD build team. Chris will be proving Fusion 360  support and training. He is also a long time RC enthusiast and will provide input on all aspects of the build, as well as, helping us lead the charge for AU submission.      

Joshua Smith: (Sponsor/Consultant)  Owner of MakerGeeks
Joshua is an amazing DIY multi-rotor enthusiast who is sponsoring our project with his newly developed 16x16 Zyon 3d printer and supplies to tackle the difficult task of printing the large Medusa thin-walled  plastic exoskeleton components. He is also providing us with much needed 3d material and 3d printing expertise on large scale 3d prints. Joshua has committed to shipping us a Zyon in 4 weeks. We are so excited about its arrival in the near future.

Mandee Mikulski: (Supporter) Director of Development Academy of Model Aeronautics
Mandee is a current supporter of our project. She has shared invaluable insight on fundraising, social media and marketing of the Medusa Project. She has dedicated herself to helping share the news of the Medusa project to the AMA community. As we move forward she will hopefully help us involve the Medusa open design message at RC aircraft events in North America.

Kyel Engelhart: (Sponsor) Mackevision Senior Retoucher and Photographer
Kyel has recently agreed to sponsor some of his valuable time to capture our flights and build process. Kyel’s creative professionalism and eye for detail will be critical to communicate the Medusa message as we progress.

Contributing Members

Peter Rubins: (Sponsor) Concept Artist
Peter created  and gifted our team with the HK painting for the opening of the site. His work is an inspiration to us all.

Jim Scartz: (Sponsor) Owner of Monto RC
Jim is the designer and Sponsor of the Medusa motors, The Avroto 3520 400Kv. He has been running performance evaluations on his engines with 17inch carbon fiber props. Jim has also went out of his way proving us with 33% off purchase’s from his store, Monto RC, making it possible for us to achieve first flight in mid-April.

Harry Arnold: (Builder/Sponsor) Owner of Detroit Drone
An avid multi-copter builder who upon my first meeting explained that he could make almost anything fly. His UAV experience and expertise with the Detroit Fire department and other regional authorities to help saves lives is a  gift to our project and our community. Harry is a fellow TechShop builder and I have enjoyed our long talks about details of flight design and 3d prining. Harry will be our lead test pilot as well as the official UAV electrical system engineer consultant.

Eric Nantel: (Consultant/Sponsor)  RobotShop Lead UAV Specialist
Eric has designed one of the most incredible V-Tailed quad copter on the market. His skill, ingenuity and  UAV design construction and manufacturing experience is key for the success of our project.  Eric has been very generous with his time helping with a wide range of challenges with building  one of the largest V-Tailed Multi-rotors in existence.

Will Brick:  (Sponsor) Manager of Detroit TechShop
Will is providing us with a focus point for our team with his generous sponsorship of two TechShop memberships for the Medusa Team. He is also a RC enthusiast and has been influential in organizing and communicating information on our project within the TechShop community.

Dave Gill: (Sponsor) President of Npower Software
I have worked very closely with David and the nPower team on development of their Power NURBS plug-in for 3ds Max. He has graciously sponsored a version of the software for our project and is dedicated to publishing project information to their users as soon as we have it available.

Heiko Wenczel: (Sponsor) President Mackevision Detroit
I have been working with Heiko at Mackevision for 5 years. He is an excellent leader and accomplished RC copter pilot. He has been our biggest supporter proving design hardware and rendering support for our team. He is focused on helping us achieve additional funding and support for the AU presentation. To be sure, Heiko is always looking to take things to the next level, so expect things to have a Mackevision professional polish for the final presentation. Heiko will also be our AU pilot and will be involved in helping us get things flying in the right direction.

Leon Carpenter: (Sponsor/Consultant) Producer/Account Manager
I work with Leon every day and he is a great daily source of inspiration for our blog and ideas for fund raising and marketing. He has also offered to help us with capturing interviews and progress reports as we progress.

Vaughn Gernhardt: (Builder/CGI/Consultant) Mackevision CG Specialist
Vaughn was my first point of contact on the project. He is a very creative professional and been my sounding board on so many of my ideas from the beginning.  Once we have completed the 3ds Max modeling he will be leading the animation and rendering pre-visualizations including materials, environment, VFX and rendering. Once Vaughn gets a hold of the 3ds Models we can expect great things.

Joe Palma: (Consultant/Visionist ) Mackevision CG Specialist
Joe is my number one sounding board. We meet multiple times a week discussing everything from web marketing to structural engineering. He has turned on so may light bulbs in my head over the course of the project to date. As we move forward he will continue to add relevant insight and constructive criticism to help us achieve our final objective.