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Dive into the research topics where Glenn McDonald is active.

Publication


Featured researches published by Glenn McDonald.


oceans conference | 2008

The Nereus hybrid underwater robotic vehicle for global ocean science operations to 11,000m depth

Andrew D. Bowen; Dana R. Yoerger; Chris Taylor; Robert McCabe; Jonathan Howland; Daniel Gomez-Ibanez; James C. Kinsey; Matthew Heintz; Glenn McDonald; Donald B. Peters; Barbara Fletcher; Chris Young; James Buescher; Louis L. Whitcomb; Stephen C. Martin; Sarah E. Webster; Michael V. Jakuba

This paper reports an overview of the new Nereus hybrid underwater vehicle and summarizes the vehicles performance during its first sea trials in November 2007. Nereus is a novel operational underwater vehicle designed to perform scientific survey and sampling to the full depth of the ocean of 11,000 meters - almost twice the depth of any present-day operational vehicle. Nereus operates in two different modes. For broad area survey, the vehicle can operate untethered as an autonomous underwater vehicle (AUV) capable of exploring and mapping the sea floor with sonars and cameras. For close up imaging and sampling, Nereus can be converted at sea to operate as a tethered remotely operated vehicle (ROV). This paper reports the overall vehicle design and design elements including ceramic pressure housings and flotation spheres; manipulator and sampling system; light fiber optic tether; lighting and imaging; power and propulsion; navigation; vehicle dynamics and control; and acoustic communications.


oceans conference | 2006

Ceramic External Pressure Housings for Deep Sea Vehicles

J. D. Stachiw; Donald B. Peters; Glenn McDonald

Only glasses, ceramic and carbon fiber reinforced plastic can provide the necessary weight to strength ratio to make the external pressure housings for undersea vehicles positively buoyant at the abyssal design depth. This group of materials poses unique challenges to the designer and fabricator of pressure housings. This paper summarizes the findings of the R & D program aimed at developing the technology for the design, fabrication, and testing of ceramic housings culminating in the application of ceramic housings to the WHOI ROV/AUV diving system with 36,000 ft (11,000 m) capability


oceans conference | 2014

Design of Nereid-UI: A remotely operated underwater vehicle for oceanographic access under ice

Andrew D. Bowen; Dana R. Yoerger; Christopher C. German; James C. Kinsey; Michael V. Jakuba; Daniel Gomez-Ibanez; Chris Taylor; Casey Machado; Jonathan Howland; Carl L. Kaiser; Matthew Heintz; Clifford Pontbriand; Stefano Suman; Loral O'Hara; John Bailey; Chris Judge; Glenn McDonald; Louis L. Whitcomb; Christopher J. McFarland; Larry A. Mayer

This paper reports the development of a new underwater robotic vehicle, Nereid-UI, with the goal of being capable of deployments in polar ocean regions traditionally considered difficult or impossible to access such the ice-ocean interface in marginal ice zones, in the water column of ice-covered seas, and the seas underlying ice shelves. The vehicle employs a novel lightweight fiber-optic tether that will enable it to be deployed from a ship to attain standoff distances of up to 20 km from an ice-edge boundary under the real-time remote-control of its human operators, providing real-time high-resolution optical and acoustic imaging, environmental sensing and sampling, and, in the future, robotic intervention.


oceans conference | 2002

Heat-transfer advances for submerged oceanographic systems

Glenn McDonald; M. Naiman

This paper outlines various heat-transfer methods utilizing modern fabrication techniques in conjunction with computer modeling to provide low-risk alternatives for thermal management. It presents details of a particular heat pipe configuration capable of dissipating 400 watts through a 9 1/2-inch diameter, 2-inch-thick grade 5 titanium endcap. Traditional dry contact methods, liquid cooling, and improved geometry are also discussed. The amount of power delivered to cabled systems is on the rise. As all-electric ROVs, manned submersibles, and high-powered cabled seafloor observatories come on line, inevitable inefficiencies mean that these systems must dissipate more heat. The rationale for this effort is multifaceted. Excessive heat is the enemy of solid-state electronics. It affects component longevity and efficiency in addition to introducing undesired drift in instrumentation. Increased component density is creating more heat per volume. Additionally, power conversion modules and improved motor drives are decreasing in form factor and providing less area for heat dissipation. New and improved heat-transfer methods will facilitate a greater selection of appropriate pressure case materials. Titanium, stainless steel, plastics, and ceramics should not be disallowed because they limit heat transfer. Trends in electronic components and material selection can continue to improve system design without compromising overall heat transfer. Thermal engineering needs to be part of the system integration at the onset of a projects design.


oceans conference | 2006

Design and Construction of a Polar Remote Interactive Marine Observatory (PRIMO)

Vernon L. Asper; Scott M. Gallager; Keith von der Heydt; Steven Lerner; Andrew Girard; Kenneth R. Peal; Emily Miller; Glenn McDonald; Jay Sisson; Chris Griner

A seafloor marine observatory is under development for deployment in Antarctic coastal waters to study and monitor the physical, biological, and biogeochemical processes as a function of global climate change. This observatory will consist of an instrument package on the seafloor 3.5 km from shore in 130 m of water connected the U.S. base Palmer Station by electro-optical cable, providing the capability for internet-based teleoperation by educators, students, and scientists from anywhere in the world


Underwater Technology | 2009

The Nereus hybrid underwater robotic vehicle

Andrew D. Bowen; Yoerger; Chris Taylor; Robert McCabe; Jonathan Howland; Daniel Gomez-Ibanez; James C. Kinsey; Matthew Heintz; Glenn McDonald; Donald B. Peters; Chris Young; James Buescher; Barbara Fletcher; Louis L. Whitcomb; Stephen C. Martin; Sarah E. Webster; Michael V. Jakuba


oceans conference | 2009

Field trials of the Nereus hybrid underwater robotic vehicle in the challenger deep of the Mariana Trench

Andrew D. Bowen; Dana R. Yoerger; Chris Taylor; Robert McCabe; Jonathan Howland; Daniel Gomez-Ibanez; James C. Kinsey; Matthew Heintz; Glenn McDonald; Donald B. Peters; John Bailey; E. Bors; Timothy M. Shank; Louis L. Whitcomb; Stephen C. Martin; Sarah E. Webster; Michael V. Jakuba; Barbara Fletcher; Chris Young; James Buescher; Patricia Fryer; Samuel M Hulme


Archive | 2014

THERMAL TRANSFER SYSTEM

Glenn McDonald


2013 OCEANS - San Diego | 2013

Operations to 11,000m: Nereus ceramic housing design and analysis

Glenn McDonald


Archive | 2016

SYSTEM FOR THE DEPLOYMENT OF MARINE PAYLOADS

T. Austin; Michael Purcell; Robin Littlefield; Frederic Jaffre; Gwyneth E. Packard; Glenn McDonald

Collaboration


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Andrew D. Bowen

Woods Hole Oceanographic Institution

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Chris Taylor

Woods Hole Oceanographic Institution

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Daniel Gomez-Ibanez

Woods Hole Oceanographic Institution

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James C. Kinsey

Woods Hole Oceanographic Institution

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Jonathan Howland

Woods Hole Oceanographic Institution

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Matthew Heintz

Woods Hole Oceanographic Institution

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Michael V. Jakuba

Woods Hole Oceanographic Institution

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Dana R. Yoerger

Woods Hole Oceanographic Institution

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Donald B. Peters

Woods Hole Oceanographic Institution

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