STUDY OF METHODS AND DEVICES FOR LOCATING SMALL DISTRESSED SUBMERSIBLES. (2005)
Thomas,V. N., Germeraad,D. P., Andris,R., Bentkowsky,J., Brophy,J.
The task of locating a cooperative submarine, equipped with locator aids, is compared to that of locating a noncooperative submarine. It is shown that, if a cooperative search can be undertaken, the...
Brophy, J., Jacques, A., Blais, R., Battista, R.N., Lebeau, R.
Background: Little is known about how physicians’ knowledge of and attitudes to practice guidelines for stable angina may influence their implementation. Aim: To explore the association between...
Modeling Ion Thruster Plumes Under Flight and Ground Test Conditions (2004)
Wang, J., Murphy, G., Liewer, P., Brophy, J.
Ion thrusters are valued as a high-specific impulse class of space propulsion system.
(abstract) Cyclic Endurance Test of a SPT-100 Stationary Plasma Thruster (2004)
Garner, C., Polk, J., Brophy, J.
The preliminary results of a cyclic endurance test of Russian 1.35 kW Stationary Plasma Thruster SPT-100 will be described. Data on thruster characteristics such as thrust, plume current densities,...
(abstract) Experimental Evaluation of Russian Anode Layer Thruster (2004)
Garner, C., Polk, J., Brophy, J.
This paper describes the results of a preliminary evaluation of a 1.35 kW anode layer thruster. Data on performance and plume characteristics will be presented. Data on thruster characteristics such...
Wang, J., Brophy, J., Liewer, P.
Ion thrusters are valued as a high-specific impulse class of space propulsion system.
3-D Simulations of NSTAR Ion Thruster Plasma Interactions (2004)
Wang, J., Brophy, J., Polk, J., Brinza, D.
Described is a Particle-in-Cell with Monte Carlo Collision code developed to perform detailed three-dimensional ion thruster simulations. To capture the full kinetic behavior of ion thruster plumes,...
3-D Simulations of NSTAR Ion Thruster Plasma Environment (2004)
Wang, J., Brophy, J., Brinza, D.
Full three-dimensional numerical models based on partical-in-cell with Monte Carlo collisions (PIC-MCC) simulations are developed to study ion thruster plasma interactions. 3-D simulation results for...
The Ion Propulsion System on NASA's Space Technology 4/Champollion Comet Redezvous Mission (2004)
Brophy, J., Garner, C., Polk, J., Weiss, J.
The ST4/Champollion mission is designed to rendezvous with and land on the comet Tempel 1 and return data from the first-ever sampling of a comet surface.
Polk, J., Kakuda, R., Anderson, J., Brophy, J., Rawlin, V., Patterson, M., ...
Deep Space 1 is the first interplanetary spacecraft to use an ion propulsion system for the primary delta-v maneuvers. The purpose of the mission is to validate a number of technologies, including...
An Overview of the Results from an 8200 Hour Wear Test of the NSTAR Ion Thruster (2004)
Polk, J., Anderson, J., Brophy, J., Rawlin, V., Patterson, M., Sovey, J., ...
A major component in validating ion propulsion for use on future deep space and earth orbital missions is demonstrating that the engines have sufficient service life capability.
In-Flight Performance of the NSTAR Ion Propulsion System on the Deep Space One Mission (2004)
Polk, J., Kakuda, R., Anderson, J., Brophy, J., Rawlin, V., Sovey, J., ...
This paper provides an overview of the system and presents the first flight validation data on an ion propulsion system in interplanetary space.
NSTAR Technology Validation Report (2004)
Brophy, J., Marcucci, M., Kakuda, R., Polk, J., Anderson, J., Brinza, D., ...
NSTAR Technology Validation (2004)
Brophy, J., Kakuda, R., Polk, J., Anderson, J., Marcucci, M., Brinza, D., ...
NSTAR Service Life Assessment (2004)
Brophy, J., Marcucci, M., Polk, J., Ganapathi, G., Patterson, M., Hamley, J.
Advanced Ion Propulsion Systems for Affordable Deep-Space Missions (2004)
A key feature of future deep-space science missions will be the need for significantly greater on board propulsion capability.
Performance of the NSTAR ion propulsion system on the Deep Space One mission (2004)
Polk, J., Kakuda, R., Anderson, J., Brophy, J., Rawlin, V., Patterson, M., ...
This paper provides an overview of the system and presents the flight validation data from the first 7600 hours of ion propulsion system operation in interplanetary space.
Sengupta, A., Anderson, J., Brophy, J., Rawlin, V., Sovey, J.
A long duration test of the DSl flight spare ion thruster (FT2) is presently being conducted at the Jet Propulsion Laboratory. To, date the thruster has accumulated over 23,500 hours of operation,...
Numerical simulations of ion thruster accelerator grid erosion (2004)
Brophy, J., Katz, I., Polk, J. E., Anderson, J. R.
The highly successful demonstration of ion propulsion on Deep Space 1 has stimulated the study of more demanding applications of ion propulsion. These future applications require ion thrusters...
The DS1 hyper-extended mission (2004)
Brophy, J., Brinza, D., Polk, J., Henry, M.
The Primary Mission for Deep Space (DS1) was to demonstrate 12 new technologies one of which was the Ion Propulsion System (IPS). After successfully completing its primary mission, DS1 was given a...
Large carbon-carbon grids for high power, high specific impulse ion thrusters (2004)
Polk, J., Brophy, J., Shih, W., Beatty, J., Laufer, D. M., Wilbur, P., ...
This paper reports performance and lifetime predictions based on numerical modeling and issues associated with fabrication of carbon-carbon composite grids for high power, high ISP grids.
The status of ion propulsion development and implementation at JPL in 2003 (2004)
Brophy, J., Anderson, J., Beatty, J., Goodfellow, K., Katz, I., Kolasinski, R., ...
The successful demonstration of ion propulsion on NASA's Deep Space 1 mission has stimulated substantial interest in the application of this technology to future solar system exploration missions.
Brophy, J., Jacques, A., Blais, R., Battista, R., Lebeau, R.
Background: Public agencies responsible for implementing health care policies often adapt and disseminate clinical practice guidelines, but the effectiveness of mass dissemination of guidelines is...
Are patients suffering from stable angina receiving optimal medical treatment? (2001)
Blais, R., Jacques, A., Battista, R.N., Lebeau, R., Brophy, J.
There is good evidence for the use of antiplatelet, beta‐blocker and lipid‐lowering drugs in the treatment of ischaemic heart disease, but few data on how these medications are used in...
The Galway Study of Panic Disorder. III. Outcome at 5 to 6 years (1996)
O'Rouke, D., Fahy, T.J., Brophy, J., Prescott, P.
BACKGROUND. The aim was to evaluate long-term outcome of DSM-III-R panic disorder at a mean of 5.3 years following a controlled trial of treatment that included antidepressants and behavioural...
Community health profile of Windsor, Ontario, Canada: anatomy of a Great Lakes area of concern.
The rates of mortality, morbidity as hospitalizations, and congenital anomalies in the Windsor Area of Concern ranked among the highest of the 17 Areas of Concern on the Canadian side of the Great...
Community health profile of Windsor, Ontario, Canada: anatomy of a Great Lakes area of concern.
The rates of mortality, morbidity as hospitalizations, and congenital anomalies in the Windsor Area of Concern ranked among the highest of the 17 Areas of Concern on the Canadian side of the Great...