A nuclear electric rocket is a type of spacecraft propulsion system where thermal energy from a nuclear reactor is converted to electrical energy, used to drive an ion thruster or other electrical spacecraft propulsion technology. The nuclear electric rocket terminology is inconsistent, as technically the "rocket" part of the propulsion system is non-nuclear and could be driven by solar panels; this is in contrast with a nuclear thermal rocket, which directly uses reactor heat to add energy to a working fluid, expelled out of a rocket nozzle. The key elements to NEP are: A compact reactor core An electric generator A compact waste heat rejection system such as heat pipes An electric power conditioning and distribution system Electrically powered spacecraft propulsion In 2001, the Safe affordable fission engine was under development, with a tested 30 kW nuclear heat source intended to lead to the development of a 400 kW thermal reactor with Brayton cycle gas turbines to produce electric power.
Waste heat rejection was intended to be accomplished using low-mass heat pipe technology. Safety was intended to be assured by a rugged design. Project Prometheus was an early 2000s NASA study on nuclear electric spacecraft. Kilopower is intended for surface use only. See TEM. March 2016 - First batch of nuclear fuel receivedOctober 2018 - Successful initial tests of the water droplet radiator system A pebble bed reactor using high mass-flow gaseous nitrogen coolant near normal atmospheric pressures is a possible heat source. Power generation could be accomplished with gas turbine technology, well developed. Nuclear fuel would be enriched uranium encapsulated in low-boron graphite balls 5–10 cm in diameter; the graphite would moderate the neutrons of the nuclear reaction. This style of reactor can be designed to be inherently safe; as it heats, the graphite expands, reducing the reactor's criticality. This property can simplify the operating controls to a single valve throttling the turbine; when closed, the reactor produces less power.
When open, the reactor cools, but produces more power. The graphite encapsulation simplifies waste handling. Graphite is mechanically strong, resists high temperatures; this reduces the risk including fission products. Since this style of reactor produces high power without heavy castings to contain high pressures, it is well suited to power spacecraft. A variety of electric propulsion technologies have been proposed for use with high power nuclear electrical generation systems, including VASIMR, DS4G, pulsed inductive thruster. PIT and VASIMR are unique in their ability to trade between power usage, specific impulse and thrust in-flight. PIT has the additional advantage of not needing conditioned power. A number of heat-to-electricity schemes have been proposed. In the near term, Rankine cycle, Brayton cycle, Stirling cycle generators go through an intermediate mechanical phase, with attendant energy losses. More exotic technologies have been proposed: thermoelectric, thermophotovoltaic and magnetohydrodynamic type thermoelectric materials.
Radioisotope thermoelectric generators, radioisotope heater units, radioisotope piezoelectric generators, the radioisotope rocket all use the heat from a static radioactive source for a low level of electric or direct propulsion power. Other concepts include the nuclear thermal rocket, the fission fragment rocket, nuclear pulse propulsion, the possibility of a fusion rocket, assuming that nuclear fusion technology is developed at some point in the near future. Electrically powered spacecraft propulsion Ion thruster Magnetic sail Nuclear pulse propulsion Nuclear thermal rocket Nuclear reactor Polywell Radioisotope thermoelectric generator Spacecraft propulsion
Briones Reservoir is an open cut terminal water storage reservoir located in western Contra Costa County, in the East Bay region of the San Francisco Bay Area, California. It is operated by the East Bay Municipal Utility District; the reservoir is in the Briones Hills, on the west side of Briones Regional Park and northeast of Orinda. It is impounded by Briones Dam, an earthen dam completed in 1964; the reservoir is the largest of EBMUD’s five East Bay terminal reservoirs, with a total capacity of 60,510 acre⋅ft, it has a total watershed of 8.59 square miles. The Briones Reservoir has two sources for one local and one imported, its watershed of 22 km² includes the Bear Creek drainage. Bear Creek flowed down the valley, which the reservoir submerges, still enters from the eastern section; the major water source into the Briones Reservoir is imported from the Briones Diversion Works near Orinda. It is delivered through the Briones Aqueduct, a 7-foot, 6-inch steel pipe, operated by four pumps that can deliver up to 60 million gallons a day.
This is water imported from EDMUD’s biggest water source, the Mokelumne River in the San Joaquin Valley. Water leaves Briones Reservoir and flows to the lower part of the valley and into San Pablo Reservoir. From there, the water is distributed by a pumping plant in Kensington; because the water in the reservoir is for human potable water uses, EBMUD is strict about recreational activities. Fishing and wading are not allowed. However, college rowing teams from Mills College, UC Berkeley and Saint Mary's College have permission to use the lake under certain rules, such as the inspection of all boats before use on the lake in order to prevent contamination. Two trails, the Bear Creek Trail and the Oursan Trail, together form a 14-mile hiking trail loop that circumnavigates the reservoir; the trailhead is at the Bear Creek Staging Area, within Briones Regional Park. A Trail Use Permit issued by EBMUD is required for all hikers, which can be obtained online at the EBMUD website for $10. No mountain biking is permitted on the trail.
Horseback riding is allowed. Dogs are allowed on the Oursan Trail segment only, must be leashed. Briones Reservoir and Briones Hills area List of dams and reservoirs in California List of lakes in the San Francisco Bay Area EBMUD—East Bay Municipal Utility District website "EBMUD Trail Map". Archived from the original on 2013-03-03. EBMUD Trail Use Permit — online purchasing website
The 1999 WNBA Season was the Women's National Basketball Association's third season. The 1999 season saw two expansion teams join the Minnesota Lynx and Orlando Miracle; the schedule was increased from 30 to 32 games per team. The season ended with the Houston Comets winning their third WNBA championship. Eastern Conference Western Conference There were 12 teams in the league. For the playoffs, the three teams with the best record in each conference were seeded one to three; the top seeded team in each conference got a bye for the first round. Charlotte Sting: Dan Hughes Cleveland Rockers: Linda Hill-MacDonald Detroit Shock: Nancy Lieberman New York Liberty: Richie Adubato Orlando Miracle: Carolyn Peck Washington Mystics: Nancy Darsch Houston Comets: Van Chancellor Los Angeles Sparks: Orlando Woolridge Minnesota Lynx: Brian Agler Phoenix Mercury: Cheryl Miller Sacramento Monarchs: Sonny Allen Utah Starzz: Frank Williams 1999 WNBA Awards 1999 WNBA Playoffs
Thomas Spencer Smith is an English professional footballer who plays as a midfielder for Bath City. Smith was given the number 28 shirt at the start of the 2014–15 season and was an unused substitute for Swindon Town in games against Scunthorpe United, Gillingham Fleetwood Town and Leyton Orient, he made his professional football debut as a second half-substitute in the League One game against Preston North End. Handed the number 31 shirt for the 2015–16 season, he was involved in the Newport County Football League Trophy game as a used substitute. Smith scored his first goal for Swindon against Crewe Alexandra on 5 September 2015. After being assigned the number 15 jersey for the 2016–17 campaign, Smith made his first appearance of the season in an EFL Cup first round tie against Championship side Queens Park Rangers, replacing Yaser Kasim in the 65th minute; the game resulted in a 4–2 victory for the Championship side on penalties after a 2–2 draw in normal time. On 13 September 2016, Smith made his first start of the campaign, in Swindon's EFL Trophy group stage tie against Chelsea U23s.
The game resulted in a 2–1 victory with Smith playing for the entire 90 minutes. On 22 February 2017, Smith joined Irish side Waterford on loan, along with teammate Jake Evans, until June 2017. On 24 February, Smith made his Waterford debut in their 1–0 away defeat against Athlone Town, on the opening day of the 2017 campaign. On 10 March 2017, Smith scored his first goal for Waterford, in their 2–0 away victory over UCD, netting the visitors' second in the 85th minute. Smith made a big impact at Waterford, his loan ended in May 2017 and his last appearance came in a 3–0 defeat to the League of Ireland Champions Dundalk in the EA Sports Cup. On 12 October 2017, Smith joined National League South side Bath City on a one-month loan. Two days he made his debut for Bath during their FA Cup fourth qualifying round tie against Chelmsford City, in which he was awarded man of the match despite the 0–0 draw. Following an impressive first month at Bath, Smith's loan was extended until 6 January 2018. On 24 November 2017, Smith was recalled by parent club, following increasing injury problems.
On 8 December 2017, Smith returned to Bath on a one-month loan and went on to score in their FA Trophy tie against Hendon, which resulted in a 2–1 defeat. On 19 January 2018, Smith again rejoined Bath on loan for the remainder of the campaign, he was released by Swindon at the end of the 2017–18 season. On 1 June 2018, following his release from Swindon, Smith agreed to join fellow League Two side, Cheltenham Town on a two-year deal. On 20 September 2018, Smith returned to Bath City on a four-month loan; the deal was extended for the rest of the season. On 2 July 2019, after several loan spells, Smith returned to Bath City on a permanent deal, signing a two-year contract; as of 16 October 2018. Tom Smith at Soccerbase
For divisional competitions, see: 2014 Asian Five Nations division tournaments The 2014 Asian Five Nations, known as the 2014 HSBC Asian 5 Nations due to the tournament's sponsorship by the HSBC, was the 7th and final series of the Asian Five Nations rugby union tournament, before it shrinks to only include the top 3 Asian teams from 2015. Japan, as victors, qualified for the 2015 Rugby World Cup as Asia 1 in Pool B, while the runner up, Hong Kong, qualified for the repechage playoffs, against Uruguay. In additional qualifications, only the top three teams would play in the leading tier in 2015, after the ARFU reduced the top tier from five, to three. United Arab Emirates has been replaced with Sri Lanka, who earns promotion from Division 1; the teams involved are: Points are awarded to the teams as follows: The tournament is broadcast live in many different countries. Official Website ARFU
Jazzen is a studio album by Swedish musicians Nina Ramsby and Martin Hederos, released 16 October 2006 on Amigo Musik. It is the second collaboration by the duo; the album consists of English-language jazz standards, translated into Swedish by Ramsby, as well as new compositions by Hederos and Ramsby. Tracks include Swedish versions of "I Got It Bad" by Duke Ellington, "Open the Door" by Betty Carter and "Lover Man" by Jimmy Davis, Roger Ramirez and Jimmy Sherman; the album reached No. 36 on the Swedish Sverigetopplistan albums chart. All lyrics are written by Nina Ramsby