A demisable fuel supply system for a satellite includes a pressurized aluminum alloy tank with an aluminum alloy propellant management device therein. The propellant management device (PMD) can have any capillary action surface tension fluid transport features known in the art. Selected inner surfaces of the tank and the PMD are covered with a titanium based coating to guarantee propellant wettability and corrosion resistance of the fuel supply system.
A demisable fuel supply system for a satellite includes a pressurized aluminum alloy tank with an aluminum alloy propellant management device therein. The propellant management device (PMD) can have any capillary action surface tension fluid transport features known in the art. Selected inner surfaces of the tank and the PMD are covered with a plasma powder sprayed titanium based coating to guarantee propellant wettability and corrosion resistance of the fuel supply system.
A welding method and apparatus is provided that is suitable for arc welding processes using shield gas. A weld area on an aluminum weldment is exposed to sulfur hexafluoride to chemically bind hydrogen in the weld area with the sulfur hexafluoride to reduce porosity.
Disclosed is a variable polarity power supply for arc welding that quickly switches between polarities in order to more easily re-establish the arc. The variable polarity power supply includes a current-limited boost circuit for providing increased open circuit voltage to re-establish the arc, while limiting the re-establishment current. The variable polarity power supply is particularly suitable for computer-controlled welding applications because it periodically restarts the arc in either direction without using high frequency radiation, and provides quick switching times along with a low reverse current to reduce the heat in the torch, thereby increasing the longevity of the torch.
Method Of Fabricating Space Satellite Tank Components Utilizing Additive Manufacturing And Spin Forming
A thin wall spinformed metallic tank shell includes a first region with a first thickness and at least one second region with a second thickness greater than the first thickness including structural features formed by an additive manufacturing process, where the features are added outside and inside of the metallic tank shell and can include: polar bosses added to one or both external polar regions of a spherical section of the tank; mounting tabs on a circumferential skirt of the tank; mounting rings containing threaded holes attached to the interior or exterior surface of the tank; mounting trunnions attached to the external surface of the tank; propellant management devices attached to the interior surface of the tank; structural reinforcement vanes and ribs attached to the inside surface of the tank; and brackets and/or shelves attached to the inside surface of the tank.
Center Of Mass Control Of Liquid Tanks For Spacecraft Use
- Long Beach CA, US Ian Ballinger - Anaheim Hills CA, US Wayne H. Tuttle - Torrance CA, US
International Classification:
B64G 1/40 F17C 13/00
Abstract:
A rigid structure propellant management device (PMD) liquid storage tank includes an outer shell and internal structures inside the outer shell that include a plurality of vertical columns each made up of a stack of individual storage cells. Each of the storage cells has solid vertical sidewalls and top and bottom capillary windows that allow vertical liquid transfer between adjacent cells in a vertical column. The top and bottom capillary windows in each of the storage cells have permeabilities that result in a selected direction of liquid flow in each column. A piping and valve system may be connected to the top capillary window of a top storage cell and to the bottom capillary window of a bottom storage cell of each vertical column, configured to allow controlled liquid transfer between adjacent vertical columns so that locations of empty cells in the tank as liquid is drawn from the tank achieves a selected column by column drainage sequence and controls a center of mass of the tank.
A helmet configured to protect a human head against mild traumatic brain injury upon impact includes an outer shell and a liner consisting of fluid fillable flexible fluid chambers fluidly connected to each other by fluid connections. The fluid chambers being spaced around the circumference of the helmet and configured to fill a space between the head and the outer shell when the helmet is positioned on the head. Impact resistant flexible pads are also in the liner and are spaced around an inner circumference of the outer shell adjacent to each of the fluid fillable flexible fluid chambers. A flexible inner shell inside the liner is configured to fit closely on the head. The flexible fluid chambers are configured to compress in response to impacting of the helmet on an impact side and to force liquids through the fluid connections to inflate other fluid chambers inside the helmet thereby cushioning the head against a rebound impact on the inside of the helmet.
Wayne H. Tuttle - Torrance CA, US Lisa C. Whitaker - Torrance CA, US
International Classification:
A42B 3/12 A42C 2/00 A63B 71/08 A42B 3/06
Abstract:
A helmet configured to protect a human head against mild traumatic brain injury upon impact includes an outer shell and a liner consisting of pairs of fluid fillable flexible fluid chambers fluidly connected to each other by fluid connections between each of the pairs of fluid fillable flexible fluid chambers being spaced on opposite sides of the helmet and configured to fill a space between the head and the outer shell when the helmet is positioned on the head. Impact resistant flexible pads are also inside the liner and are spaced around an inner circumference of the outer shell adjacent to each of the fluid fillable flexible fluid chambers. A flexible inner shell inside the liner is configured to fit closely on the head. The flexible fluid chambers are configured to compress in response to impacting of the helmet on an impact side and to force liquid through the fluid connections to inflate fluid chambers on an opposite side of the helmet thereby cushioning the head against a rebound impact on the opposite side.
Name / Title
Company / Classification
Phones & Addresses
Wayne Tuttle Owner/G.M
Service Dog House.com The Potty Dog House. A Couple of Tuttle. Two Tuttles Pet Supplies & Foods - Retail. Service Animals - Dogs
155 Broadway Ave, Welland, ON L3C 5L6 9057347034
Wayne Tuttle Owner/G.M
Service Dog House.com Pet Supplies & Foods - Retail · Service Animals - Dogs
Hamilton Sundstrand Apr 2004 - Mar 2013
Manager, Welding Development
Keystone Engineering Company (Formerly Utc Long Beach) Apr 2004 - Mar 2013
Director of Innovation
Laser Light Industries 2001 - 2011
Owner
California State University, Dominguez Hills 2007 - 2010
Grad Student
Nuspace 2007 - 2010
Director of Innovation
Education:
California State University - Dominguez Hills 2007 - 2010
Masters, Master of Arts, Conflict Resolution
University of Redlands 1975 - 1980
Bachelors, Bachelor of Science
South High School
Skills:
Microsoft Excel Engineering Microsoft Office Catia Systems Engineering Solidworks Testing Aircraft Manufacturing Aerospace Lean Manufacturing Six Sigma Program Management Manufacturing Engineering Gd&T Process Improvement Materials Root Cause Analysis Continuous Improvement Engineering Management Product Development Cad Composites Mechanical Engineering Value Stream Mapping Design For Manufacturing Quality Management Iso Spc R&D Earned Value Management Quality System Kaizen Aviation Product Design
Wayne Tuttle (1987-1991), J Sommerville (1990-1994), Scott Allen (1978-1982), Heather Keller (1986-1987), Ann Wade (1993-1997), Nancy Johnson (1972-1976)