PropellerSafety.com

Archive for Prop Guards – Page 5

Guard Technologies Category Launched

Prior to mid 2011 we captured technologies with potential applications to virtual propeller guards (sensor based guards) or to conventional boat propeller guards on our Technologies page, now titled Prop Guard Technologies

Propeller Guard CFD: Oliver Lee Thesis

Propeller Guard Design: An Investigation Using CFD. Oliver Lee. University of Sydney (Australia). November 2011. We are thrilled to welcome this Computational Fluid Dynamics (CFD) analysis of propeller guards into the library of academic research studies on propeller guards by college students around the world. We also proud to have been a small part of […]

Cushioned Propeller Guard – Senior Design Project

Marine drive companies have long employed damping / cushioning technologies to protect marine drives, most typically trim cylinder log strike systems that allow the drive to swing back, up, and over underwater obstacles. Recent years have brought several through hull drives to the market, most prominently Volvo Penta’s IPS, and Brunswick’s / Cummins Mercruiser Diesel […]

Developing a Consumer Guide for the Selection of Propeller Guards and Other Propeller Safety Devices

This propeller guard selection guide is NOT ready for use. As brightly emblazoned on our documents, they are rough drafts. We posted them to generate a discussion that could improve them as well as provide some ideas to those working on the U.S. Coast Guard’s recently announced efforts to produce a consumer guide to propeller […]

Propeller Guard Designed for Courtroom Use – Senior Design Project

The boating industry continues to reject the use of propeller guards and vehemently testifies against them in propeller injury trials. One of their tools is to illustrate ANY changes in the performance of the boat with the guard vs. without the guard and claim those changes are unacceptable. We propose a Senior Design Project, Capstone […]

Propeller Guard Drag Research Projects – Senior Design Projects

Boat propeller guards create drag which effects the performance of the boat, especially the top speed attainable at wide open throttle and time to plane. Propeller guard designers try to minimize drag by increasing the size of the mesh (make the open holes larger) and by decreasing the size of the wires / rods used […]

Listman trial 17 November Session 1b

This post is part of our coverage of the Listman v. OMC propeller injury trial Robin Listman vs. Outboard Marine Corporation Second Judicial District Court of the State of Nevada, County of Washoe 17 November 2011 Session One

Entrapped by a Boat Propeller

The boating industry has long objected to propeller guards. One of their frequent objections is the possibility that someone might become entrapped in the propeller guard (physically caught on the prop guard). We find their objection interesting considering we frequently encounter reports of boat propeller accidents in which people were entrapped or entangled in open […]

Shock Mounted, Forward Facing, Catchers Mask Propeller Guard Invention

Our Shock Mounted, Forward Facing, Catchers Mask Propeller Guard invention disclosure below was posted on 15 August 2011. We will make no changes to the text below line following this paragraph except to correct misspellings, punctuation, and to update html/computer codes and links. Any updates to the invention will be posted below the invention disclosure. […]

Boat and Propeller Strike Tests Model Turtles But Not People

Earlier we pointed out the fallacies of CED’s propeller guard testing at SUNY’s circular tank not using a boat AND using chimes to represent people in The Emperor Has No Boat. We came across an interesting article this weekend describing a joint Georgia Tech / Georgia Department of Natural Resouces (DNR) project using a boat […]