Project Portfolio - Raven Dorr

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Project Portfolio
Raven Dorr
Contents
Design & Fabrication 2 – 14
3D CAD Modeling 15 – 20
GD&T Drawings 21 – 24
Technical Writing 21 – 40

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Project: Parabolic Solar Furnace, Private Sponsor: Dave Wills, Owner of Freshops
Type: Design & Fabrication
Time Period: Summer 2011 Duration: 3 months
Objective: Convert a large derelict satellite dish into a device which tracks the sun continuously while reflecting
sunlight towards a focal point collector for the purpose of creating steam, fermentation science, and culinary arts.
Approach: The satellite was acquired and the existing structure was modeled in CAD to obtain important
construction dimensions and motion studies. An aluminum arm was added to raise and lower the focal point
collector by human strength. The existing tilt actuator was kept, but a panning base frame of steel was added which
rotates a steel shaft supported by a thruster bearing and two radial pillow block bearings, rotated by an electric
motor driving a orbiting chain and sprocket. The reflective surface is made from hand polished aluminum sheets.
Results: It has been tested to burn wood and boil water. The thruster bearing is too small and needs to be
reinforced, and the original tilt actuator replaced. Next, the solar panel and sun tracking sensors will be installed.

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Project: Payload Rack, Oregon State University Mars
Rover Team
Type: Design and Fabrication
Time Period: Winter 2011 - Spring 2011
Duration: 6 months
Objective: Build a lightweight detachable payload
rack that allows a mars rover vehicle to deliver and unload seven boxes weighing twelve pounds across a quarter
mile of rough terrain.
Approach: The (jig for lathing Teflon) The (jig fo

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Project: Modeling of My Underwater Engineering Designs, Oregon State University Underwater Robotics Team
Time Period: Spring 2011 Duration: 4
days
Objective: Build a lightweight cover for a pan-tilt-
zoom camera to be used in a hot dusty Utah desert.
Approach: The (jig for lathing Teflon).

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Project: Line Following and Maze Solving Robot, ENGR 412 Introduction to Robotics
Time Period: Spring 2011 Duration: 3 months
Objective: Build a robot to compete in a line following race and maze solving race using a 9V battery.

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Results: The
Project: Rolling Frame and Launcher, Oregon State University Underwater Robotics Team
Time Period: Fall 2011 – Winter 2012 Duration: 6 months
Objective: Build a rolling frame and launcher to transport a 200 pound robot and supporting power and tether
systems, and be able to launch the robot over the side of a boat.
Approach: The design uses a wood 2x4 main frame to reduce weight and cost. The wood is joined with aluminum
brackets using bolts. The launcher system is a welded aluminum boom arm supported by a steel tension cable, and
swivels about a welded steel base. The swivel motion is about a steel shaft supported by a vertical thrust bearing

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above two radial pillow block bearings bellow the thrust bearing. A manual push bar is included, made from steel
pipe and fittings. 4” caster wheels were used.
Results: The rolling frame serves well as a transportation device, allowing the robot to be pushed up ramps and
pushed several blocks up hill. The 2x4 main frame is durable when rolled over large bumps and cracks. The frame
has held up for over two years of heavy use. After the initial construction, the launcher was found to require
additional reinforcement in the form of a steel compression support below the boom, shown in the rendering
below, as well as steel tubing bolted to the vertical launcher post and a larger thrust bearing supporting the
rotation shaft.
Project: Vacuum Forming Table, Oregon State University Underwater Robotics Team
Time Period: Winter 2012 Duration: 2 months
Objective: Build a vacuum forming table for manufacturing camera housings used on the underwater robot.
Approach: The

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Results: The
Project: Underwater Housing for PTZ Cameras, Oregon State University Underwater Robotics Team
Objective: Build a waterproof camera housing using for allowing pan-tilt-zoom cameras a full range of view.

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Results: The
Project: 36 Hour Underwater Camera Housing, Oregon State University Underwater Robotics Team:
Time Period: Spring 2012 Duration: 36 hours
Objective: Build a waterproof camera housing in 36 hours rated for 20’ accommodating one CAT5 port.

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Results: The
Project: 6 Hour Underwater Camera Housing, Oregon State University Underwater Robotics Team
Time Period: Spring 2012 Duration: 6 hours
Objective: Build a waterproof camera housing in 6 hours rated for 20’ accommodating one CAT5 port.

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Results: The
Project: Under Actuated Robotic Arm, Oregon State University Mechanical Engineering Capstone Project
Time Period: Winter 2013 - Spring 2013 Duration: 6 months
Objective: Build a robotic arm which uses less actuators than degrees of freedom to make various shapes
repetitively, apply force, while having stiffness and being lightweight.

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Results: The
Project: Lathe Collet Holder, Oregon State University MIME Machining and Product Realization Lab
Time Period: Spring 2013 Duration: 5 days
Objective: Build a rack to hold three sets of lathe collets.

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Results: The
Project: Ammunition Reclamation for Autonomous Robot, Oregon State University ENGR 421 Applied Robotics
Objective: Build a system for an autonomous robot which collects spent ammunition during a competition game
play and reloads that ammunition for use against the opposing robot.

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Results: The
Project: Controls Programming for Autonomous Vessel, U.S. Navy
Time Period: Summer 2013 Duration: 1 month
Objective: Program the control and data acquisition ability of a semi-autonomous surface vessel, including
scripted trajectory with manual override, hover ability, and several data acquisition sensors and alarm features.

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Results: The
Project: Remote Control DC-3 Design Investigation, Personal Project
Type: 3D CAD Modeling
Time Period: Spring 2012 Duration: 2 days
Objective: Model the reusable parts of a decomissioned remote control airplane and investigate a method to build
a remote controlled DC-3 airplane using the decommissioned parts.

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Results: The
Project: Cowling for Quad Copter, Oregon State University Autonomous Aerial Vehicle Team
Time Period: Fall 2011 Duration: 1 day
Objective: Design a lightweight cowling system for an existing autonomous quad copter aerial vehicle to protect
the vehicle from collision damage.

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Results: The
Project: Guides for Making Affordable Underwater Robotics, Oregon Underwater Volcanic Exploration Team
Time Period: Summer 2011 Duration: 1 month
Objective: Make easily understood instructions and guides for teaching middle school students how to build
affordable underwater robotic components, modeled from components I had previously built.

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Results: The
Project: Modeling Underwater Engineering of Teammates, Linn-Benton Community College ROV Team
Time Period: Fall 2010 - Spring 2011 Duration: 9 months
Objective: Model the designs described by teammates of the underwater robotics team for the purpose of greater
system integration troubleshooting and for including in the team’s poster competition entry and technical report
competition entry.

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Results: The
Project: Modeling of My Underwater Engineering Designs, Oregon State University Underwater Robotics Team
Time Period: Fall 2011 - Spring 2013 Duration: 1 year 9 months
Objective: Model the underwater engineering designs I am delegated while on the underwater robotics team for
the purpose of greater system integration troubleshooting and for including in the team’s poster competition entry
and technical report competition entry.

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Project: Parabolic Solar Furnace Modification, Private Sponsor: Dave Wills, Owner of Freshops
Time Period: Summer 2011 Duration: 1 week
Objective: Communicate the design concept to the project sponsor by animating the motion, and derive important
construction measurements.

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Project: Component A-1 from an Printer Ink Cartrige, ME 511 Geometric Dimensioning & Tolerancing
Type: GD&T Drawings
Time Period: Spring 2013 Duration: 1 day
Objective: Develop a GD&T drawing for a mechanical component from a mechanical assembly.

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Type: GD&T Drawings

Project Portfolio - Raven Dorr

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