65 results on '"nuclear propulsion"'
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2. BMI Research: Brazil Defence & Security Report: Market Overview.
- Subjects
DEFENSE industries ,HIGH technology industries ,NUCLEAR propulsion ,AIRBORNE warning & control systems - Abstract
The article offers information on the defence sector in Brazil. It states that country's defence sector has involved in a broad range of advanced arms programmes such as nuclear-propulsion submarine technology, airborne early warning & control (AEW&C) aircraft, and surface attack aircraft. Furthermore, Brazil has been considered as the prime importer of high-technology weapons systems in various countries including the U.S., France, and Great Britain.
- Published
- 2012
3. Contributions Regarding the Aircraft Nuclear Propulsion.
- Author
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Mitrica, Bogdan, Stanciu, Virgil, Petre, Marian, Dima, Mihai Octavian, Petre, Carmelia, and Precup, Irinel
- Subjects
- *
HEAT transfer , *HEAT exchangers , *AIRPLANE motors - Abstract
The possibility to use a nuclear reactor for airplanes propulsion was investigated taking in to account 2 possible solutions: the direct cycle (where the fluid pass through the reactor’s core) and the indirect cycle (where the fluid is passing through a heat exchanger). Taking in to account the radioprotection problems, the only realistic solution seems to be the indirect cycle, where the energy transfer should be performed by a heat exchanger that must work at very high speed of the fluid. The heat exchanger will replace the classical burning room. We had performed a more precise theoretical study for the nuclear jet engine regarding the performances of the nuclear reactor, of the heat exchanger and of the jet engine. It was taken in to account that in the moment when the burning room is replaced by a heat exchanger, a new model for gasodynamic process from the engine must be performed. Studies regarding the high flow speed heat transfer were performed. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
4. Parametric Sizing of Composite Metal Lined Tanks for Bimodal Nuclear Thermal Propulsion Applications.
- Author
-
Abumeri, Galib H. and Roche, Joseph M.
- Subjects
- *
NUCLEAR rockets , *NUCLEAR propulsion , *SPACE exploration , *DIRECT energy conversion , *ROCKETS (Aeronautics) , *SPACE ships , *SPACE flight propulsion systems - Abstract
A computational method is described to evaluate the structural performance of composite over-wrapped metal lined LH2 tanks. This work was performed in support of the human space exploration initiative undertaken by NASA. The method is a judicious combination of available computer codes for finite elements, composite mechanics, durability, damage tracking, and damage tolerance. To illustrate the effectiveness of the analytical approach, composite over-wrapped LH2 core tanks of the Bimodal Nuclear Thermal Rocket (BNTR) were sized parametrically using launch loads and burst test requirements. The benefits and debits of inserting advanced composite technology into existing LH2 tank design concepts are evaluated in the paper. Results obtained indicate that LH2 tanks made from tape placement carbon fiber in a toughened epoxy matrix backed by a metallic liner for hermiticity are able to: (1) sustain micro-cracking in the matrix of the composite system prior to liner failure, (2) offer significant weight savings as compared to present technology (up to 31%), and (3) use unified design and weight configuration to support both launch loads and burst test requirements. The structural performance and sizing evaluation was performed for composite tanks varying in length from 10 m to 28 m. Weight calculations for the composite over-wrapped tanks show that the larger the tank length, the larger the weight savings (compared to those of traditional metallic tanks). © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]
- Published
- 2006
- Full Text
- View/download PDF
5. Investigation of nuclear electric powered interstellar precursor missions
- Author
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Simone, Domenico, Bruno, Claudio, and Czysz, Paul A.
- Subjects
- *
ELECTRIC propulsion , *ASTROPHYSICS , *INTERPLANETARY medium , *ROCKET payloads , *MASS budget (Geophysics) - Abstract
Abstract: Nuclear Electric Propulsion (NEP) is a technology conceptually proposed since the 1940s by E. Stuhlinger in Germany. The JIMO mission originally planned by NASA in the early 2000s produced at least two designs of ion thrusters fed by a 20–30kW nuclear powerplant. When compared to conventional (chemical) propulsion, the major advantage of NEP in the JIMO context was recognized to be the much higher I sp (lab-tested at up to 15,000s) and the capability for sustained power generation, up to 8–10 years when derated to I sp about 8000s. The goal of this paper is to show that current or near term NEP technology enables missions far beyond our immediate interplanetary backyard. In fact, by extending the semi-analytical approach used by Stuhlinger, with reasonable ratios α≡power/mass of the propulsion system (i.e., 0.1– 0.4kW/kg), missions to the Kuiper Belt (40AU and beyond) and even the so-called FOCAL mission (at 540AU) become feasible with an attractive payload fraction and in times of order 10–15 years. Further results regarding missions to Sedna’s perihelion/aphelion, and to Oort’s cloud will also be presented, showing the constraints affecting their feasibility and mass budget. [Copyright &y& Elsevier]
- Published
- 2011
- Full Text
- View/download PDF
6. Radioisotope electric propulsion (REP): A near-term approach to nuclear propulsion
- Author
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Schmidt, George R., Manzella, David H., Kamhawi, Hani, Kremic, Tibor, Oleson, Steven R., Dankanich, John W., and Dudzinski, Leonard A.
- Subjects
- *
ELECTRIC propulsion of space vehicles , *RADIOISOTOPES in astronautics , *NUCLEAR propulsion , *ROBOTICS , *SPACE flight - Abstract
Abstract: Studies over the last decade have shown radioisotope-based nuclear electric propulsion to be enhancing and, in some cases, enabling for many potential robotic science missions. Also known as radioisotope electric propulsion (REP), the technology offers the performance advantages of traditional reactor-powered electric propulsion (i.e., high specific impulse propulsion at large distances from the Sun), but with much smaller, affordable spacecraft. Future use of REP requires development of radioisotope power sources with system specific powers well above that of current systems. The US Department of Energy and NASA have developed an advanced Stirling radioisotope generator (ASRG) engineering unit, which was subjected to rigorous flight qualification-level tests in 2008, and began extended lifetime testing later that year. This advancement, along with recent work on small ion thrusters and life extension technology for Hall thrusters, could enable missions using REP sometime during the next decade. [Copyright &y& Elsevier]
- Published
- 2010
- Full Text
- View/download PDF
7. In defiance of nuclear deterrence: anti-nuclear New Zealand after two decades.
- Author
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Reitzig, Andreas
- Subjects
NUCLEAR ship laws ,INTERNATIONAL relations ,INTERNATIONAL security - Abstract
In 1984, nuclear-armed and nuclear-powered vessels were banned from New Zealand to express the country's rejection of the nuclear deterrence concept. This led to a disagreement with the United States. Today, the ban on nuclear-powered ships is the only element of the nuclear-free legislation that still strains US–New Zealand relations. This article presents the reasons for the ban on nuclear-powered ships, which include scientific safety concerns, a symbolic rejection of the nuclear deterrence posture, and patriotic factors such as a nuclear-free national identity. The military and economic consequences of the ban are also examined. Since the ban on nuclear-powered vessels appears to be neither widely known abroad nor commonly recognised as a supportive disarmament measure outside New Zealand, it is concluded that whatever the future of this ban will be, New Zealand's anti-nuclear image will remain known internationally through the ban on nuclear arms. [ABSTRACT FROM AUTHOR]
- Published
- 2006
- Full Text
- View/download PDF
8. Nuclear propulsion—a historical perspective.
- Author
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Gunn, Stanley
- Subjects
- *
NUCLEAR propulsion , *INTERPLANETARY voyages , *ASTRONAUTICS & state - Abstract
Focuses on the development of nuclear propulsion for space travel in the United States. Success of the nuclear rocket tests; History of the U.S. Nuclear Engine for Rocket Vehicle Application programme; Termination of the funding for the program.
- Published
- 2001
- Full Text
- View/download PDF
9. REVISITING THE NUCLEAR OPTION.
- Author
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Spears, Lieutenant William
- Subjects
- *
TECHNOLOGY , *ELECTRIC power , *COLD War, 1945-1991 , *NUCLEAR propulsion , *NUCLEAR energy , *WARSHIPS - Abstract
The article discusses the reliance of the naval technology on electrical power. Topics include the nine nuclear-powered cruisers (CGNs) commissioned by the U.S. through out the Cold War in the beginning of 1961, the design of receptor required by the nuclear propulsion for destroyers, and the potential of the nuclear-powered warship in passing through flank speed.
- Published
- 2014
10. From One-Man Submersible to High-Tech Behemoth.
- Author
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Polmar, Norman
- Subjects
- *
HISTORY of submarines , *NUCLEAR propulsion , *TORPEDO tubes - Abstract
The article focuses on the history of the development of submarines in the U.S. It mentions that the Nautilus, built in 1800 by Robert Fulton, was equipped with ballast tanks and a horizontal rudder. Some of the other submarines discussed include H. L. Hunley, USS Holland developed by engineer, John P. Holland, and USS Thresher (SSN-593), a derivative of nuclear propulsion and equipped with four torpedo tubes.
- Published
- 2008
11. Navy CG(X) Cruiser Design Options: Background and Oversight Issues for Congress: RS22559.
- Author
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O'Rourke, Ronald
- Subjects
CRUISERS (Warships) ,WARSHIPS ,NUCLEAR propulsion ,NUCLEAR energy - Abstract
The Navy would like to use the design of its new DDG-1000 destroyer as the basis for its planned CG(X) cruiser. Ships based on other hull designs are possible. Nuclear propulsion is an option being studied for the CG(X). For a more general discussion of both the CG(X) and DDG-1000, see CRS Report RL32109, Navy DDG-1000 (DD(X)) and CG(X) Ship Acquisition Programs: Oversight Issues and Options for Congress, by Ronald O'Rourke. This report on basic CG(X) design options will be updated as events warrant. [ABSTRACT FROM AUTHOR]
- Published
- 2007
12. U.S. capacity factors: Leveled off at last.
- Author
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Blake, E. Michael
- Subjects
NUCLEAR reactors ,NUCLEAR energy ,NUCLEAR facilities ,NUCLEAR propulsion - Abstract
Reports on the better capacity factors of the U.S. fleet of nuclear reactors for the three-year period 2003-2005 than in 2000-2002. Percentage increase of the median design electrical rating (DER) net capacity factor; Bottom quartile in the 2003-2005 period; Median boiling water reactors (BWR) factor in the 2003-2005 period.
- Published
- 2006
13. Nuclear propulsion and power for space.
- Subjects
- *
NUCLEAR industry , *NUCLEAR energy , *NUCLEAR propulsion , *SPACE sciences , *NUCLEAR power plants - Abstract
Presents nuclear technology experts' views about space nuclear power and propulsion projects in the United States. National Aeronautics and Space Administration's Project Prometheus aiming to develop nuclear electric power-plant for the Jupiter Icy Moons Orbiter; Plans to develop advanced technology nuclear radioisotope power systems; Risks involved in the development and use of nuclear propulsion systems.
- Published
- 2004
14. We Know You're Very Careful But: A Writer's Enlistment.
- Author
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Staudt, David
- Subjects
UNITED States Navy recruiting & enlistment ,RECRUITING & enlistment (Armed Forces) ,NUCLEAR propulsion ,NUCLEAR submarines ,MILITARY science ,ANTINUCLEAR movement - Abstract
The article discusses the author's experiences of being enlisted as a seaman recruit in the U.S. Navy. He participated in the Nuclear Propulsion Program, a two-and-a-half year course designed to train technicians for nuclear-powered submarines. He studied thermodynamics, reactor physics and radiological controls for another six months. He remembered that he and his colleagues used to laugh at claims by anti-nuclear protestors that real submarines were replacing depleted nuclear fuel cells at their base.
- Published
- 2004
15. Aptly named after the god of the underworld, the Pluto Project created a cruise missile from hell.
- Author
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Hallstead, William
- Subjects
- *
CRUISE missiles , *NUCLEAR propulsion , *GUIDED missiles - Abstract
In 1952, the cold war and the arms race prompted the U.S. Air Force, and the Atomic Energy Commission (AEC) to underwrite the development of an under-the-radar-screen supersonic low-altitude missile (SLAM), a cruise missile capable of extended missions carrying up to 12 hydrogen bombs that could be released at low altitude over successive targets. The missile's nuclear ramjet propulsion system would superheat the incoming air blast, ejecting it at a velocity that would thrust the missile forward at six times the speed of the V-1. The entire project was code named Pluto and the nuclear engine was code named Tory. The development contract was awarded to the University of California's Ernest O. Lawrence Radiation Laboratory (now the Lawrence Livermore National Laboratory) in Livermore, 30 miles east of San Francisco, California. On July 1, 1964, the Air Force and the AEC canceled Project Pluto. Perhaps the most compelling reason for killing the project was that the United States was now deploying intercontinental ballistic missiles (ICBMs).
- Published
- 2003
16. Providing a Policy Foundation for Nuclear Propulsion in Space.
- Author
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Dhillon, Harry
- Subjects
- *
NUCLEAR propulsion , *NUCLEAR rockets , *SPACE exploration - Abstract
Provides a history of the use of nuclear propulsion in the U.S. Advantage of using nuclear propulsion; System under nuclear propulsion; Information on the nuclear rocket technology initiative called the Project Rover which will be used in outer space exploration.
- Published
- 2002
17. Development of a Nuclear-Powered Merchant Ship.
- Subjects
NUCLEAR ships ,NUCLEAR energy ,NUCLEAR propulsion ,SHIPS - Abstract
The article reports on the announcement of U.S. President Dwight D. Eisenhower to develop a nuclear-powered merchant ship which will be carried out by the Atomic Energy Commission (AEC) and the Maritime Administration. According to AEC commissioner Willard F. Libby, a pressurized water reactor of the Nautilus type would be used to drive the vessel. Libby informs that the estimated time before the ship can begin its mission is from 24 to 30 months, and the estimated cost of the nuclear propulsion plant including the nuclear fuel charge is about $21 million. Meanwhile, Maritime Administrator Clarence G. Morse describes that the ship would resemble one of the new Maritime Administration designs to carry out its mission of atoms for peace.
- Published
- 1955
- Full Text
- View/download PDF
18. U.S. Atomic Energy Developments.
- Subjects
NUCLEAR energy ,ELECTRIC power ,ELECTRIC reactors ,CARBON dioxide ,NUCLEAR propulsion ,RADIATION - Abstract
The article offers news briefs regarding the development of atomic energy in the U.S. The production of electric power from nuclear energy was achieved by an experimental homogeneous reactor at Oak Ridge National Laboratory. Commander Gerald J. Duffner announced the start of a test that will determine the menace of carbon dioxide in an atomic-powered submarine. The Atomic Bomb Casualty Commission conducted a study on the loss of vision due to radiation effects on the eyes of Hiroshima victims.
- Published
- 1953
19. American Developments in Atomic Energy.
- Subjects
NUCLEAR energy ,SUBMARINES (Ships) ,NUCLEAR propulsion ,PUBLIC spending - Abstract
The article offers news briefs regarding the developments in atomic energy in the U.S. The keel plate of the first atomic-powered submarine, USS Nautilus, has been laid at Groton, Connecticut on June 14, 1952. President Harry S. Truman has requested the Congress for an appropriation of 3,341 dollars for a five-year atomic program.
- Published
- 1952
20. Can ion engines conquer space?
- Subjects
ION rockets ,PROPELLANTS ,NUCLEAR rocket engines ,NUCLEAR rockets ,NUCLEAR propulsion - Abstract
The article examines the potential of ion propulsion for rockets as a new contender for propelling vehicles through space. It is noted that chemical propellants and problems with nuclear rockets have contributed to the emergence of ion propulsion as an alternative to conventional propellants. The biggest share of the development money for electrical propulsion in the U.S. is received by ion engines.
- Published
- 1963
21. Nuclear weapons at sea, 1990.
- Subjects
- *
NAVIES , *NUCLEAR weapons , *NUCLEAR reactors , *BALLISTIC missiles , *NUCLEAR submarines , *AIRCRAFT carriers , *ARMED Forces , *NUCLEAR propulsion - Abstract
Presents and charts the nuclear weapons capability of the five nuclear powers' naval forces. The naval forces of the five nuclear powers possess about 14,600 nuclear weapons, nearly 30 percent of the world's total arsenal. About 750 ships and submarines can fire naval nuclear weapons, down 100 from last year. Significant developments in the last year include the launchings of the Soviet's sixth and last Typhoon and sixth Delta IV SSBN, and the first U.S. Ohio class submarine carrying Trident II missiles. Of the major warships and submarines of the British navy, some 32 percent are nuclear capable, as are 12 percent of the French navy and 2 percent of Chinese ships.
- Published
- 1990
22. NUCLEAR PLANE.
- Subjects
NUCLEAR aircraft ,CONTRACTS ,NUCLEAR propulsion ,NUCLEAR aircraft engines ,AIRPLANES ,NUCLEAR reactors - Abstract
The article reports that the contract to build and create a nuclear-powered airplane was awarded by the American government to Boeing Aircraft Corp. On March 12, 1952, the U.S. Air Force announced that Boeing Aircraft Corp. won the contract for work toward building an airplane powered by nuclear energy. Moreover, it was announced that Pratt and Whitney Aircraft Corp. located in East Hartford, Connecticut will work in conjunction with Boeing Aircraft Corp. towards the completion of the nuclear powered aircraft.
- Published
- 1952
23. New Zealand at risk from nuclear rocket test?
- Author
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Charles, Dan
- Subjects
- *
ROCKETS (Aeronautics) , *SCIENTISTS , *NUCLEAR reactors , *NUCLEAR propulsion , *ECOLOGICAL disturbances , *DISASTERS - Abstract
Reveals that Pentagon documents released by the Federation of American Scientists warn that proposed testing of a nuclear powered rocket could send a nuclear reactor crashing into New Zealand. Military program code-named Timberwind; Funding from the Strategic Defense Initiative program; Potential environmental disaster; Comment of Steve Aftergood, researcher at the Federation of American Scientists; Results of analysis by Sandia National Laboratories.
- Published
- 1991
24. The Atom Goes to Sea.
- Subjects
NUCLEAR propulsion ,NUCLEAR energy ,NUCLEAR submarines - Abstract
The article focuses on the developments of nuclear power by U.S. Navy, in relation to the success of submarine Nautilus. It relates the Navy's proposal programs, which include several reactors and experimental prototypes, exercising the advantages of applying nuclear power in naval warfare. It mentions that nuclear carriers does not consist ducts while submarines were stealthy. It notes the submarine Albacore which, along with Nautilus, inspired the creation of Skipjack by Electric Boat Corp.
- Published
- 1957
25. Nuclear Milestone.
- Author
-
Covault, Craig
- Subjects
- *
SPACE robotics , *SPACE exploration , *NUCLEAR energy , *NUCLEAR propulsion - Abstract
The article reports that the U.S. National Aeronautics and Space Administration (NASA), in a major advancement for robotic exploration, is moving quickly to make space nuclear power, and eventually nuclear propulsion, an inherent design element in near-term, medium-cost planetary missions. The objective will be to open previously isolated areas of the Solar System for robotic exploration as early as 2013.
- Published
- 2007
26. Propulsion Systems for Navy Ships and Submarines: GAO-06-789R.
- Author
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St. Laurent, Janet A.
- Subjects
COST of navies ,PROPULSION systems ,NUCLEAR propulsion ,MILITARY budgets ,MILITARY supplies ,SUBMARINES (Ships) - Abstract
In recent years, the Navy has used nuclear propulsion systems for its submarines and most aircraft carriers and conventional propulsion systems that rely on fossil fuel for its surface combatants and amphibious warfare ships. As the Navy looks to design an affordable force that is capable of meeting future security challenges, some of the assumptions and factors that have guided past Navy decisions on propulsion systems may require reassessment. For example, technological advances have enabled greater efficiency in both nuclear and conventional propulsion systems. Moreover, the cost of fossil fuel has risen sharply in recent years. Congress requested that we review the Navy's assessment of alternative propulsion methods for submarines and surface combatants. Our objectives were to determine (1) the status and scope of key Navy studies on alternative propulsion methods, (2) the major improvements to existing propulsion systems, (3) near-term and future ships' propulsion systems, and (4) the various ship propulsion related technologies the Navy is pursuing. In March 2006, we provided you with a briefing of our findings regarding propulsion systems for Navy ships and submarines. This report summarizes the results of that briefing as well as additional work we performed since that time. The Navy has completed one study, and is in the process of completing two other studies on alternative propulsion systems for surface combatants, amphibious warfare ships, and submarines. The completed study is a "quick look" analysis of comparative life cycle costs of nuclear and fossil-fueled surface combatants and amphibious warfare ships. Although the study attempted to examine the fiscal break-even point for nuclear and conventional propulsion systems, it had several limitations. Specifically, it did not consider the operational requirements or advantages of nuclear and conventionally powered propulsion systems, nor did it undergo a high-level, Navy-wide review. According to Navy officials, the second study, required by the 2005 Chief of Naval Operations guidance, will be similar, but will provide in-depth analysis covering costs and operational factors for surface combatants as well as submarines. The Navy anticipates that the third study, required by the National Defense Authorization Act for Fiscal Year 2006, will build upon the Chief of Naval Operations study. Our limited review indicates that while the planned methodology for this study, as described by Navy officials, appears reasonable, its usefulness will depend on the extent to which the Navy uses accurate, reliable data and reasonable assumptions for its modeling and considers all relative costs. Nuclear and conventional propulsion systems for Navy ships and submarines have been improved in recent years. According to Navy officials, nuclear power plants are now simpler and smaller with reduced maintenance and personnel requirements, and their life span has also been increased. These... [ABSTRACT FROM AUTHOR]
- Published
- 2006
27. From Bean Counter to Visionary: A Space Odyssey for NASAChief.
- Author
-
Lawler, Andrew
- Subjects
- *
PHYSICISTS , *NUCLEAR propulsion , *FEDERAL aid to research , *SPACE exploration - Abstract
It wasn't too long ago that a senior Republican lawmaker blasted physicist Sean O'Keefe's vision for NASA as timid and anemic. The U.S. administrator's early push to develop nuclear power and propulsion systems, build a shuttle alternative and lift the old taboo on discussing human missions beyond the space station were obvious clues to what lay ahead. In the wake of space ship, Columbia, O'Keefe surprised the White House by asking for a massive spending increase on the order of $27 billion over 5 years to speed up and expand work on space exploration efforts.
- Published
- 2004
- Full Text
- View/download PDF
28. WASHINGTON outlook.
- Author
-
Asker, James R.
- Subjects
- *
DEFENSE industries , *ARMORED military vehicles , *NUCLEAR propulsion - Abstract
Reports developments on defense industry in the United States as of January 2002. Development of unmanned combat air vehicle by the U.S. Navy; Proposal of nuclear propulsion by the U.S. Energy Department and the National Aeronautics and Space Administration; Program reviews of Space-Based Infrared System.
- Published
- 2002
29. Navy Needs More Info On CG(X) Before Propulsion Discussions Begin, Admiral Says.
- Author
-
Fein, Geoff
- Subjects
MILITARY supplies ,NUCLEAR propulsion - Abstract
This article reports on a statement issued by U.S. Navy Admiral Kirkland Donald regarding the installation of a nuclear propulsion plant in a cruiser of the service. The Navy is still going through the CG(X) Analysis of Alternatives (AoA), that among other things looks at weapons systems, hull types and propulsion options. Kirkland said that there is still work the Navy needs to do to make sure that the warfighting requirements are fully defined.
- Published
- 2008
30. Navy Study Finds Nuclear Propulsion Could Be Good Fit For Medium Surface Combatants.
- Author
-
Fein, Geoff
- Subjects
NUCLEAR propulsion ,MILITARY weapons - Abstract
The article reports that nuclear propulsion is ideal for medium surface combatants based on a study conducted by the U.S. Navy. Rear Admiral Kevin McCoy notes that nuclear propulsion is ideal for the Navy's missions with the rising oil prices. In March 2007, the Navy presented the findings to the House Armed Services seapower and expeditionary warfare subcommittee. McCoy said that the study did not explore directed energy weapons or rail gun systems.
- Published
- 2007
31. Navy Nuclear Propulsion Holding Steady In Recruiting And Retention.
- Author
-
Fein, Geoff
- Subjects
RECRUITING & enlistment (Armed Forces) ,ENGINEERING students ,NUCLEAR propulsion ,EMPLOYEE retention ,LABOR incentives - Abstract
The article reports on the difficulty being faced by the U.S. Navy in finding recruits as the pool of engineering and science graduates declines in 2006. The shortage in recruits came as the Navy tries to compete with the private sector to hang onto its nuclear propulsion personnel. According to head of Navy nuclear propulsion Kirkland Donald, though there is a diminishing technology education base, the retention rate has improved over time by offering incentives and bonuses.
- Published
- 2006
32. Continuing History of Safe And Effective Nuclear Propulsion Vital, Official Says.
- Author
-
Fein, Geoff
- Subjects
NUCLEAR propulsion ,NUCLEAR power plant design & construction ,QUALITY control - Abstract
The article provides information on the elements of the nuclear propulsion program of the U.S. Navy. According to Kirkland Donald, director of Navy nuclear propulsion, there are a number of steps that need to be taken to ensure a safe and effective system, from developing a good design all the way through quality control. He further notes that once the plant is designed, engineered and built, it has to be operated within constraints and boundaries set by the design.
- Published
- 2006
33. Caught cheating -- again.
- Author
-
Scutro, Andrew
- Subjects
STUDENT cheating ,NUCLEAR propulsion ,SAILORS ,EXAMINATIONS - Abstract
The article reports on a cheating incident on a nuclear propulsion test involving 13 U.S. sailors aboard the aircraft Harry S. Truman in early May 2009. According to Lukas McMichael, a spokesman for Naval Nuclear Propulsion director Admiral Kirkland Donald, the Navy punished the eight sailors by removing their nuclear Navy enlisted classifications. McMichael cites that the service allowed the five sailors to keep their nuclear qualifications following captain's mast. It notes that after the incident, the nearly 300 sailors retook the test.
- Published
- 2009
34. Nuclear and future flight propulsion.
- Author
-
Moton, Tryshanda and Donahue, Benjamin B.
- Subjects
- *
SPACE flight propulsion systems , *NUCLEAR propulsion , *OUTER planets , *SPACE vehicles , *CONFERENCES & conventions , *GAS giants - Abstract
The article focuses on the nuclear and future flight propulsion in the U.S. Concepts for the atmospheric mining of the outer planets were investigated by researchers at the John H. Glenn Research Center of the U.S. National Aeronautics and Space Administration in Cleveland, Ohio. Studies of fusion-powered interplanetary spacecraft were conducted by the University of Illinois in Urbana-Champaign. 10 papers on the emerging field of breakthrough propulsion physics were included by the July Joint Propulsion Conference.
- Published
- 2006
35. Space Nuclear Conference: Adjusting to a "change of course.".
- Author
-
Blake, E. Michael
- Subjects
CONFERENCES & conventions ,NUCLEAR industry ,SUPERCONDUCTING magnets ,PROPULSION systems ,NUCLEAR propulsion - Abstract
Provides information on topics discussed at the Space Nuclear Conference in the U.S. in 2005. Changes in the Project Prometheus embryonic space nuclear program of the U.S. National Aeronautics and Space Administration (NASA); Use of superconducting magnets in propulsion system according to Samuel Ting, professor of Physics at the Massachusetts Institute of Technology in Cambridge; Priorities set by the NASA for Project Prometheus, including nuclear electric propulsion.
- Published
- 2005
36. Fission power back on NASA's agenda.
- Author
-
Hand, Eric
- Subjects
- *
NUCLEAR propulsion , *ASTRONAUTICAL research , *SPACE flight , *INTERPLANETARY voyages - Abstract
The article reports on the priority that is focused on the use of nuclear propulsion in several space-technology research and development for 2012 in the U.S. It mentions that the report "Space Technology Roadmaps and Priorities," revealed that nuclear power and propulsion rank on top of the list of important areas of technology development. Michael Houts, nuclear-research manager at Marshall Space Flight Center, wants astronauts to ride a nuclear reactor in their space missions.
- Published
- 2012
- Full Text
- View/download PDF
37. Weightlessness and nuclear power in space.
- Subjects
- *
LARGE space structures (Astronautics) , *SPACE colonies , *ARTIFICIAL gravity , *WEIGHTLESSNESS , *SPACE stations , *SPACE ships , *MOON , *MARS (Planet) , *NUCLEAR propulsion , *AERONAUTICS - Abstract
Addresses several issues that will play a significant role in the National Aeronautics and Space Administration's plans for a lunar base and expeditions to Mars. Weightlessness; Replacing the space-shuttle fleet; Proposed use of nuclear-propulsion technology.
- Published
- 1990
38. Nuclear and future flight propulsion.
- Author
-
Palaszewski, Bryan
- Subjects
- *
NUCLEAR propulsion , *NUCLEAR aircraft engines , *INERTIAL confinement fusion , *CONTROLLED fusion , *INTERNAL combustion engine ignition - Abstract
The article discusses significant developments in nuclear and flight propulsion in 2010. An overview of the six aerospace studies of atmospheric mining performed by Case Western Reserve with the assistance by the National Aeronautics and Space Administration (NASA) Glenn Research Center is given. Some developments for laser-driven inertial confinement fusion (ICF) are discussed, including the concept of fast ignition which is efficient in providing high gains and maintaining low electron temperatures.
- Published
- 2010
39. Sailors caught cheating on nuke test.
- Author
-
Scutro, Andrew
- Subjects
STUDENT cheating ,NUCLEAR propulsion ,SAILORS ,NUCLEAR aircraft carriers ,NAVAL discipline ,EXAMINATIONS - Abstract
The article reports on cheating in nuclear propulsion test by 13 U.S. sailors aboard the aircraft carrier Harry S. Truman in May 2009. The incident is the third involving the carrier. Lukas McMichael, spokesman for Naval Nuclear Propulsion director Admiral Kirkland Donald, said that the Navy removed the enlisted classifications of eight sailors as a disciplinary action while the other five were allowed to keep theirs following a captain's mast. As a result, nearly 300 sailors retook the test.
- Published
- 2009
40. Ferguson: Fleet short on officer, enlisted nukes.
- Author
-
Scutro, Andrew
- Subjects
SAILORS ,UNITED States naval officers ,NUCLEAR propulsion - Abstract
The article reports on the major shortage of nuclear-trained sailors and officers in the U.S. Navy according to chief of naval personnel, Vice Admiral Mark Ferguson. In a hearing of the House Appropriations Committee defense subcommittee on March 19, 2009, Ferguson told lawmakers the Navy is short 452 nuclear-trained officers from ensign to captain and 922 enlisted sailors trained in nuclear propulsion. Ferguson also told the committee that the service will attempt to remedy the shortfalls with selective re-enlistment bonuses.
- Published
- 2009
41. Lawmakers: Nuclear power is Navy's future.
- Author
-
Peterson, Zachary M.
- Subjects
NUCLEAR propulsion ,WARSHIPS ,LEGISLATIVE bills - Abstract
The article concerns the proposal of Representatives Gene Taylor and Roscoe Bartlett that the U.S. Navy should be required to use nuclear propulsion to fuel large ships. It is inferred that some senators have argued that the 2008 defense authorization bill for nuclear power to be used for cruisers in light of the rising cost of fossil fuels would be too costly. Both Taylor and Bartlett argue that it is cheaper to go nuclear in the long run.
- Published
- 2007
42. Lawmakers: Put a face on shipbuilding budgets.
- Author
-
Matthews, William
- Subjects
LEGISLATIVE amendments ,UNITED States armed forces appropriations & expenditures ,SHIPBUILDING ,AIRCRAFT carriers ,NUCLEAR propulsion - Abstract
Reports on the approval of an amendment to the 2007 Defense Authorization Act by the U.S. House Armed Services Committee which would require someone in the U.S. Navy to take responsibility for shipbuilding costs incurred by the force. Intention of U.S. Representative Gene Taylor (R-Miss.) to impose financial discipline on the Navy; Influence of rising ship costs on the decision of the committee to reject an amendment involving the purchase of three aircraft carriers by 2019; Recommendation of the committee for the Navy to consider using nuclear propulsion.
- Published
- 2006
43. Herculean Effort Got Nautilus Underway on Nuclear Power.
- Author
-
Winkler, David F.
- Subjects
- *
NUCLEAR submarines , *NUCLEAR propulsion , *NUCLEAR warships , *NUCLEAR energy - Abstract
This article focuses on the nuclear-powered submarine USS Nautilus. On January 21, 1954, at the shipyard of the Electric Boat Co. at Groton, Connecticut, the USS Nautilus was launched. This marked the culmination of a vision that began in 1939 with Ross Gunn at the Naval Research Laboratory, who suggested that nuclear power would enormously increase the range and military effectiveness of a submarine. After 10 years of research into reactor development, a Submarine Officers Conference held in March 1949 endorsed the concept of building a nuclear propulsion system for installation in a submarine in January 1955.
- Published
- 2004
44. Nuclear and future flight propulsion.
- Author
-
Hrbud, Ivana
- Subjects
- *
NUCLEAR propulsion , *AEROSPACE engineering , *AEROSPACE industries , *AIRCRAFT industry - Abstract
Discusses developments in the area of nuclear and future flight propulsion in the United States aerospace industry for 2003. Andrewspace's research on improving the original Orion nuclear pulse propulsion concept; Experiments at Sandia National Laboratory using the Saturn and Z-pinch pulsed-power machines; U.S. National Aeronautics and Space Administration-Marshall's exploration of innovative technologies for solar salt propulsion systems.
- Published
- 2003
45. Space Reactor for Sale: Call 555-USSR.
- Author
-
David, Leonard
- Subjects
- *
SPACE vehicles , *AERONAUTICS , *NUCLEAR reactors , *NATIONAL security , *NUCLEAR facilities , *NUCLEAR propulsion - Abstract
Announces that the United States has purchased an unfueled Soviet Topaz 2 space nuclear power system. Estimated costs of a Soviet space nuclear reactor; Cooperation between the National Aeronautics & Space Administration (NASA) and the U.S. Department of Defense; How several Soviet engineers will assist in set-up and initial testing of the Topaz 2 system.
- Published
- 1991
46. IS INDUSTRY LAX?
- Author
-
Rickover, H. G.
- Subjects
- *
NUCLEAR power plants , *NUCLEAR propulsion , *QUALITY control , *CONTRACTS , *NUCLEAR reactors - Abstract
This article reports that during the past few years hundreds of major conventional components, such as steam generators, have been produced for naval nuclear-propulsion plants in the U.S. Less than 10 percent have been delivered on time. Reinspection showed that over 50 percent had to be reworked to meet contract requirements. In one case the strength properties of a common material, as given by the manufacturer, were found on test to be 30 percent too high. When a reactor component failed to function properly not long ago, its failure was traced to the use of the wrong material in a pin. Yet this component had passed quality-control inspection.
- Published
- 1963
47. A Drop-In Looking for Signs of Company.
- Author
-
CHANG, KENNETH
- Subjects
- *
SPACE vehicles , *NUCLEAR propulsion , *GRAVITY , *MARS (Planet) - Abstract
Right now, a spacecraft containing Curiosity -- a car-size, nuclear-powered planet rover -- is coasting at 8,000 miles per hour toward Mars, nearing the end of a journey that began in November. With tightening budgets, it is the last big hurrah for NASA's planetary program for quite a few years. Packed with ingenious new instruments, the rover promises to provide the best-ever examination of the Red Planet, digging up clues to a profound question: Could there ever have been life there? Over the coming week, the pull of gravity will accelerate the spacecraft to 13,000 miles per hour, and early Monday morning Eastern Daylight Time, it is scheduled to execute a series of astoundingly complicated maneuvers and place the rover on the surface. Its new home will be the Gale Crater, just south of the equator, a 96-mile-wide bowl punched out by a meteor more than 3.5 billion years ago. It is one of the lowest places on Mars, which should help advance Curiosity's $2.5 billion mission: studying the environment of early Mars. [ABSTRACT FROM AUTHOR]
- Published
- 2012
48. NASA Picks Rover Destination: Mountain on Mars.
- Author
-
Chang, Kenneth
- Subjects
- *
MARS probes , *SPACE vehicle design & construction , *NUCLEAR propulsion , *MARTIAN craters - Abstract
NASA's next Mars rover -- the ambitious, beleaguered, delayed Mars Science Laboratory -- finally has a destination. Mission scientists announced Friday that the rover, a nuclear-powered vehicle the size of a small S.U.V., would head to Gale Crater, a 96-mile-wide depression near the Martian equator. What attracted them there is a mountain that rises upward nearly three miles at the center, making it taller, for example, than Mount Rainier outside Seattle. [ABSTRACT FROM PUBLISHER]
- Published
- 2011
49. Regulators Find Design Flaws In New Reactors.
- Author
-
Wald, Matthew L.
- Subjects
- *
NUCLEAR reactors , *NUCLEAR energy , *NUCLEAR facilities , *NUCLEAR propulsion - Abstract
WASHINGTON -- In a setback for the only model of nuclear reactor for which ground has been broken in the United States, government regulators have found additional problems with the design of its shield building, a crucial component, the chairman of the Nuclear Regulatory Commissionsaid on Friday. The chairman, Gregory B. Jaczko, said that computations submitted by Westinghouse, the manufacturer of the new AP1000 reactor, about the building's design appeared to be wrong and ''had led to more questions.'' He said the company had not used a range of possible temperatures for calculating potential seismic stresses on the shield building in the event of an earthquake, for example. [ABSTRACT FROM AUTHOR]
- Published
- 2011
50. Official Confident About Fuel Pools at U.S. Reactors.
- Author
-
Wald, Matthew L. and Berger, Joseph
- Subjects
- *
NUCLEAR reactors , *NUCLEAR propulsion , *NUCLEAR facilities - Abstract
WASHINGTON -- The chairman of the Nuclear Regulatory Commission said Sunday morning that the spent fuel pools at American nuclear reactors are less vulnerable than the ones in Japan because of steps ordered by his agency after the attacks of Sept. 11, 2001, including having utilities prepare to use fire hoses to pump in extra water in the event ordinary cooling systems are knocked out. Nuclear utilities were ordered to ''identify and prestage equipment'' that would be useful in such an emergency, according to commission officials. They have been reluctant to disclose details, because some preparations against terrorist attack are classified, but indicate that the preparation includes locating emergency generators, diesel-driven pumps, hoses and diesel fuel, as well as setting up procedures. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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