The name Yancy is a baby boy name.

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Native American Meaning:
The name Yancy is a Native American baby name. In Native American the meaning of the name Yancy is: Englishman.

SoulUrge Number: 1

People with this name have a deep inner desire to use their abilities in leadership, and to have personal independence. They would rather focus on large, important issues, and delegate the details.

Expression Number: 5

People with this name are excited by change, adventure, and excitement. They are dynamic, visionary and versatile, able to make constructive use of freedom. They fight being restricted by rules and conventions. They tend to be optomistic, energetic, intelligent, and to make friends easily. They may be changeable, restless, untidy, and rebellious.


By Antik Batik Sep 16, 2014

Originally Posted: November 12, 2002 An RS-68 engine is test fired. Photo: BoeingPowering the Delta 4 is Rocketdyne's RS-68 powerplant, the first large all-American liquid-fueled rocket engine built since the space shuttle main engine a quarter-century ago.Developed over the past five years, the RS-68 is the world's largest hydrogen engine, yet relatively simple and cheap to produce."What we do is very, very difficult. But when we do it right, it's just a great feeling," said Dan Collins, Boeing's vice president of Delta programs. "Nobody has ever developed an engine like this and done it in the amount time that Rocketdyne did. This is a great success and really the heart and soul of Delta 4 and what we are going to build our future on as far as our propulsion system."Guzzling nearly a ton of propellants per second, the liquid hydrogen/liquid oxygen-fed RS-68 engine will produce 656,000 pounds of sea-level rated thrust. "You have developed a system that is using 17 million horsepower and (the equivalent of) 11 Hoover Dams to go defeat gravity. Yeah, it's cool!"During the Delta 4 launch, the engine will fire for the first four minutes of flight. It will be running at a throttle setting of 101 percent until the final seconds when a throttle-down to 58 percent is started in preparation for shutdown.RS-68 built upon lessons of pastAlthough not directly derived from the space shuttle main engine (SSME), the RS-68 is comparable to that reusable, hydrogen-fueled engine developed by Rocketdyne in the 1970s."We've taken a lot of the good parts of the SSME," Collins said. "Then we've learned some of the lessons of operating that engine over the past two-and-a-half decades and really sat down with a clean sheet of paper and said 'if you were looking to take all of that experience and build something today, how would you go do it?' And that's what we came up with."Driving the design of the RS-68 is cost. Keeping the expenses of producing the engine as low as possible will reduce the overall ticket to fly a satellite atop the Delta 4."The RS-68 is the first rocket engine designed specifically for low cost (to provide) affordable space-lift and worldwide commercial competitiveness," said Bryon Wood, the vice president and general manager of Rocketdynepared to the SSME, development time for the RS-68 was cut in half, the number of parts was reduced by 80 percent, the hand-touched labor reduced by 92 percent and non-recurring costs were cut by a factor of five."We've been able to get a lot of hand-work out of the RS-68 and replaced it with numerically-controlled machines. So instead of having a thrust chamber built up of a lot of tubes, we've machined this thing out of a solid piece of metal, which increases reliability," Collins said."A lot of those advancements help make the engine a more economical engine to build. So I really think it is a good balance of higher reliability, lower life-cycle cost and having the ability to all the development data and really have known this thing since inception gives us a whole lot of insight into the engine and what's going on with it."The pieces and partsThe engine has 11 major components, including the combustion chamber, single oxygen and single hydrogen turbopumps, gimbal bearing, injector, gas generator, heat exchanger and fuel exhaust duct. It stands 17 feet tall, has a bell-shaped nozzle with an 8-foot diameter and features a quadrapod thrust frame that mates the engine to the Common Booster Core first stage."It has a regeneratively-cooled main chamber, which provides for operation of the engine in a gas generator cycle which means it has a small combustion chamber that drives the turbines. We made efficient use of the gases to do that by providing roll-control for the gases that exit the hydrogen turbopump," Wood explained.All of the engine parts are delivered to NASA's Stennis Space Center in Mississippi where Rocketdyne has set up shop to assemble RS-68s, check them out and then conduct test firings on the B-1 stand there. Once the acceptance testing is completed, the engines are shipped to Boeing's factory in Decatur, Alabama, for installation into the Delta 4 rockets.Put to the testOver the past four years, RS-68 engines have logged more than 20,000 seconds of firing time during development, including tests with a thrust level of 105 percent, four percent higher than planned for launches. Three specific engines have been fired over 20 times for nearly 4,000 seconds each.Flight engines are designed for eight starts and 1,200 seconds of burn time, well in excess of what is required. But the extra margin allows for acceptance testing and on-pad aborts without having to replace the engine.The RS-68 was certified for use on Delta 4 in late 2001."It was a very, very good program," Collins said of the development. "It was a program where we learned a lot. We had our ups and downs at times, but when the team got this engine right where they wanted it to be, the amount of seconds and amount of testing we were able to put on it really escalated. We got through a lot of good testing in 2001, really gave us high confidence on the RS-68.The particular engine for the first Delta 4 launch, number 20003, has undergone about 565 seconds of firing time during five tests, including the brief Flight Readiness Firing on launch pad 37B last month.Collins said the engine passed the FRF with flying colors."We are checking the engine constantly all through the countdown. But during the last 8 and a half seconds, we are sampling engine data at about a thousand times per second. We have predictions and if we fall outside of those we will abort the launch. "We fired that thing up and all the predictions were right down the middle of the corridor. It looked really clean." The Delta 4 rocket undergoes the Flight Readiness Firing on October 14. Photo: Thom Baur/BoeingReturn to Flight crew patchThe official mission STS-114 emblem for space shuttle Discovery's seven astronauts includes a tribute to Columbia.Choose your store: - - - Ares 1-X PatchThe official embroidered patch for the Ares 1-X rocket test flight, is available for purchase.Apollo CollageThis beautiful one piece set features the Apollo program emblem surrounded by the individual mission logos.Expedition 21The official embroidered patch for the International Space Station Expedition 21 crew is now available from our stores.Hubble PatchThe official embroidered patch for mission STS-125, the space shuttle's last planned service call to the Hubble Space Telescope, is available for purchase. | | | | 2014 Spaceflight Now Inc.New communications craft launched for U.S. military SPACEFLIGHT NOWPosted: December 5, 2009 The Delta 4 rocket debuted its latest variant with a display of power and precision Saturday night, successfully using an energetic creation to heave a vital communications satellite into space for the U.S. military. Credit: Pat Corkery/ULA Blasting away from Cape Canaveral's Complex 37 at 8:47 p.m. EST with a dashing speed not seen on previous Delta 4 vehicles, the rocket roared through the sound barrier in just 36 seconds and climbed past the edge of space only three minutes later.Four solid-fueled boosters affixed to the rocket in pairs provided the impressive kick that propelled the 217-foot-tall Delta into the nighttime sky, augmenting the thrust from the first stage's hydrogen-fed main engine.The hotrod rocket is known as the Medium+ (5,4) configuration. It's distinguished by a five-meter composite payload shroud, a similarly-sized upper stage and the quad arrangement of solid rockets. Previous Medium+ rockets have flown with the smaller four-meter nose cone, an upper stage that carries less fuel and only two solid motors.The United Launch Alliance Delta 4 family was conceived around a modular design, allowing mission planners to match different rocket configurations with the payloads they carry. Earlier flights spanned the spectrum of options ranging from the simplest version featuring just two stages all the way to the triple-body heavy-lifter that can haul the largest satellites.The spacecraft needing a ride to space Saturday night was the Air Force's third Wideband Global SATCOM communications satellite, weighing a hefty 12,800 pounds. The "5,4" variant of Delta 4 fit the role of launching the craft into the desired supersynchronous transfer orbit.The cryogenic main engine and all four solids were ignited on the launch pad, causing the rocket to depart the Florida spaceport in a hurry.The strap-on motors fired for 94 seconds and then separated. The RS-68 engine continued burning through the initial four minutes of flight by consuming liquid hydrogen and liquid oxygen.Shortly before the first stage's burn concluded, having already left the atmosphere, the 47-foot-long nose shroud covering the satellite was jettisoned.The first stage finished its job and separated about 100 nautical miles over the ocean, leaving rocket's upper stage and cryogenic RL10B-2 powerplant to perform a lengthy firing to achieve an intermediate parking orbit and then a second, brief burn near the western coast of Africa that sent the payload toward an orbit that was targeted to hit 237 nautical miles at perigee, 36,167 nautical miles at apogee and inclined 24 degrees.The payload separated from the launcher just before T+plus 41 minutes while soaring away from the planet over the Indian Ocean."Now more than ever, our nation depends on our ability to successfully deliver space-based capabilities with 100 percent mission success," Col. Gary Henry, commander of the Air Force's Launch and Range Systems Wing.Known as WGS 3, this satellite is the third in a major program to upgrade to the military's main communications infrastructure, replacing the aging Defense Satellite Communications System (DSCS) spacecraft. Each WGS has 10 times the capacity of a DSCS satellite, allowing users to process and receive data quicker than ever before. "WGS is the nation's next generation wideband satellite communications system that will increase the security, availability and bandwidth of communications for our globally-engaged service men and woman," said Lt. Col. Dave Hook, commander of the 5th Space Launch Squadron at Cape Canaveral.The satellites supply communications such as maps and data to soldiers on the battlefield, relay video from unmanned aerial reconnaissance drones, route voice calls and data messaging, and even offer quality-of-life considerations like television broadcasts and email delivery to the troops. WGS 1 entered service last year to cover the vast Pacific Command that stretches from the U.S. western coast all the way to Southeast Asia. The WGS 2 satellite launched earlier this year was placed into operation over the Indian Ocean for use by U.S. Central Command to provide coverage for the warfighters in Afghanistan, Iraq and other parts of Southwest Asia.The new WGS 3 satellite will be positioned above the Eastern Atlantic at an orbital slot of 12 degrees West longitude. Its broad reach will cover U.S. European Command and U.S. Africa Command, plus lend additional support over the Middle East."WGS 3 is the next step in deploying Wideband Global SATCOM to augment and eventually replace the legacy Defense Satellite Communications System, or DSCS, which has been the Department of Defense's backbone for satellite communications over the last three decades," said Col. Bill Harding, vice commander, Military Satellite Communications Systems Wing."WGS 3 is slated for operations over EUCOM and AFRICOM and will provide an order of magnitude increase in military communications bandwidth for Soldiers, Sailors, Airmen and Marines."The satellite will be maneuvered into a circular geostationary orbit 22,300 miles above the planet where it can match the Earth's rotation and appear parked over one area of the globe. On-orbit testing is scheduled to last a few months, enabling the craft to begin full use next April.The WGS spacecraft are constructed around Boeing's powerhouse 702-model design used by commercial satellite operators. But within the WGS craft are Ka- and X-band military communications packages.The WGS craft offer X-band communications, like the venerable DSCS satellites, to connect with military users anywhere within the field of view from orbit. What's new on WGS is Ka-band communications. Officials describe the extra frequency as a way of serving up large amounts of information for reception by U.S. and allied forces across a wide area using the so-called Global Broadcast System, or GBS."The GBS is like DirecTV to the warfighter. With the emerging requirements for more and more Predator and Reaper unmanned aerial system data, the GBS is allowing us to double the amount of full motion video we are able to carry," Harding said. "With the GBS data, it allows us to bring that full motion video down to small, one-meter terminals."The satellites also adjust and shift their multiple beams of coverage, a feature that is employed as local hotspots on Earth move."That is a key advance for our warfighters of giving them the communications where they need it, when they need it," said Mark Spiwak, the WGS program director for satellite-builder Boeing."We can make (the beams) more oblong, we can put notches in them, we can make them bigger and global. But we can shape the beams and shape the throughput."The Air Force says nine DSCS satellites remain in use while the new WGS craft are continuing to be built and deployed."We're trying to squeeze as much as capability out of the DSCS birds as we possible can. We continue to monitor the capability of the spacecraft and how much fuel in there," Harding said.With the first two WGS satellites already in use and the third en route, the Air Force seems pleased with the new constellation of spacecraft they are assembling."We're getting great feedback in terms of the support they are providing," Harding said. "The first one went up over (Pacific Command). As you realize, that particular theater deals with the tyranny of distance a lot more than some of the other theaters, so (satellite communications) is extremely important to them. Of course, the X-band -- the DSCS replacement capability -- plus the Ka-band provide them not only a lot of bandwidth...but a lot more coverage area. So there's a lot of antennas and we're able to cover forces no matter where they are in the Pacific.""Quality-of-life for the folks on the ships has been significantly increased due to WGS being fielded," Spiwak added, noting that WGS 1 can provide 24/7 Internet and television to the military deployed across the Pacific.Three more WGS satellites are under construction at Boeing's manufacturing plant in El Segundo, California. They are incorporating a slight upgrade from the previous trio of spacecraft and should be ready to begin launching in 2011."We are very active on satellites 4, 5 and 6. In fact, before the end of the year we will be assembling the F4 satellite into a complete satellite," Spiwak said."Those satellites are on schedule...we've got the formula now."Harding said the WGS program -- and its six satellites ordered thus far -- is valued at $2.1 billion."WGS addresses our military's ever-growing appetite for high-bandwidth satellite communications," said Craig Cooning, vice president and general manager at Boeing Space and Intelligence Systems. "We're now working with the Air Force to determine how future WGS satellites could be enhanced to handle missions involving airborne intelligence, surveillance and reconnaissance, and communications-on-the-move."Final Shuttle Mission PatchFree shipping to U.S. addresses!The crew emblem for the final space shuttle mission is now available in our store. Get this piece of history!STS-134 PatchFree shipping to U.S. addresses!The final planned flight of space shuttle Endeavour is symbolized in the official embroidered crew patch for STS-134. Available in our store!Ares 1-X PatchThe official embroidered patch for the Ares 1-X rocket test flight, is available for purchase.Apollo CollageThis beautiful one piece set features the Apollo program emblem surrounded by the individual mission logos.Project OrionThe Orion crew exploration vehicle is NASA's first new human spacecraft developed since the space shuttle a quarter-century earlier. The capsule is one of the key elements of returning astronauts to the Moon.Fallen Heroes Patch CollectionThe official patches from Apollo 1, the shuttle Challenger and Columbia crews are available in the store. | | | | 2014 Spaceflight Now Inc.New era of rocket launches begins at California baseSPACEFLIGHT NOW Antik Batik

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