Автор Salo, 23.02.2015 09:43:06
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ЦитатаULA wants you to help pick name of new rocket Posted on March 23, 2015 by Stephen ClarkFile photo of an Atlas 5 rocket on the launch pad with NASA's Juno spacecraft in August 2011. Credit: NASA/Bill Ingalls Eagle? Freedom? GalaxyOne? United Launch Alliance wants public input in the naming of a next-generation launcher designed to replace the historic Atlas and Delta rocket lines in the 2020s.The top three finalists were sel ected from more than 400 names submitted by ULA's 3,400 employees and space enthusiasts, the company said in a statement."ULA's new rocket represents the future of space -- innovative, affordable and reliable," said Tory Bruno, ULA's president and CEO. "More possibilities in space means more possibilities here on earth. This is such a critical time for space travel and exploration and we're excited to bring all of America with us on this journey into the future."ULA's new rocket -- called the Next Generation Launch System for now -- is scheduled for its first flight in 2019. It will replace the Atlas 5 and Delta 4 rocket families in the early 2020s.ULA has set up an online poll for voters to share their opinion on which name should be assigned to the new launcher.Voters can also text 22333 to submit a vote for their favorite name. (Text and data rates may apply)The following key can be used to text a vote:• ULA1 for "Eagle" • ULA2 for "Freedom" • ULA3 for "GalaxyOne""Space launch affects everyone, every day, and our goal in letting America name its next rocket is to help all Americans imagine the future of endless possibilities created by affordable space launch," Bruno added.Bruno says the company plans to retire the Delta 4's medium-lift version when it finishes its already-scheduled launches around 2019. Legislation passed last year prohibits ULA from using Atlas 5 rockets with Russian-made RD-180 engines to launch U.S. national security satellites beyond its current contractual commitments, which run until 2019.ULA is lobbying for a change in the law to allow Atlas 5s to continue flying with Russian engines while the company's new launcher is being certified to carry expensive U.S. government payloads into space, ensuring competition in the national security launch market with newcomer SpaceX's Falcon 9 and Falcon Heavy rockets.The Falcon 9 is months away from achieving certification for national security military satellite launches, giving SpaceX access to a large portion of the market. The Falcon Heavy would be needed to launch the military's heavier satellites, and the larger booster has not flown yet.ULA is working with Blue Origin, a closely-held aerospace firm founded by Amazon.com's Jeff Bezos, to develop a new methane-fueled rocket engine to power the first stage of ULA's new rocket.Two BE-4 engines designed by Blue Origin would fit on the bottom of the NGLS booster, each generating approximately 550,000 pounds of thrust. Such a larger methane-burning rocket engine has never flown before.ULA says the BE-4 engine has been in development with commercial funding for three-and-a-half years, giving it a head start over other new propulsion systems. As a backup, ULA has an agreement with experienced propulsion provider Aerojet Rocketdyne for a new kerosene-fueled booster engine in the same class as the BE-4.Formed in 2006 as a 50-50 joint venture between Boeing and Lockheed Martin, ULA is facing pressure fr om SpaceX to cut costs and stay competitive for lucrative launch contracts with the U.S. military and NASA. ULA says the NGLS design will cost less than the existing Atlas and Delta rockets, and Bruno has hinted that some components could be reusable.More details on the next-generation launcher, including its design, name, and upper stage engine, will be revealed April 13 at the Space Symposium, an annual space industry convention in Colorado Springs, Colorado.
ЦитатаSalo пишет: РД-107-108 и РД-261-262 это не мешало.
ЦитатаНастоящий Искандер пишет: Сланцевый газ подойдет?
ЦитатаНастоящий Искандер пишет: Цитировать
ЦитатаULA's Next Rocket To Be Named Vulcan by Mike Gruss -- April 13, 2015 COLORADO SPRINGS , Colorado -- United Launch Alliance's next rocket will be named Vulcan. The name was sel ected from an online vote that ULA said received more than a million ballots."As the company currently responsible for more than 70 percent of the nation's space launches, it is only fitting that America got to name the country's rocket of the future," Tory Bruno, ULA's president and chief executive, said April 13 during a press conference coinciding with the start of the 31st Space Symposium.ULA employees fr om across the United States submitted more than 400 names. ULA opened voting on the vehicle, currently known as the Next Generation Launch System, March 23 and received more than one million votes online through April 6."I was astonished at what happened," Bruno said of the number of votes.The three finalists were apparent before the press conference started. Blue baseball caps embroidered with the names Vulcan, Zeus and Galaxy One made clear that Eagle and Freedom hadn't made the cut. ULA had baseball caps on hand emblazoned with the names of the three finalists. Credit: SpaceNews/Mike Gruss ULA is developing the Vulcan rocket to replace the Atlas 5 and the Delta 4 launch vehicles around the end of the decade.ULA is working with Blue Origin, Amazon.com founder Jeff Bezos' secretive space company, on the methane-fueled BE-4 engine to replace the reliable-but-Russian RD-180 engines that have successfully powered 52 Atlas 5 launches for the U.S. government and a small handful of commercial customers since 2002. Congress, however, has enacted a ban on using RD-180 engines for national security missions that is set to take effect in 2019 barring legislative relief.
ЦитатаULA plans to introduce new rocket one piece at a time Posted on April 13, 2015 by Stephen Clark Artist's concept of ULA's Next Generation Launch System. Credit: ULA United Launch Alliance is expected to reveal its design for a next generation satellite launcher Monday, outlining a 20-year roadmap to develop a new methane-powered first stage booster, an advanced space tug and a reusable rocket engine.The launch company, formed in 2006 by merging the rocket divisions of Boeing and Lockheed Martin, will make the announcement at the Space Symposium, an annual space industry conference in Colorado Springs, Colorado.ULA plans to retire its basic Boeing-developed Delta 4 rocket by the end of the decade, and then stop flying the Lockheed Martin-designed Atlas 5 booster some time in the 2020s. The shakeup of ULA's rocket line comes with competitive pressure ratcheting up from SpaceX, which says it can launch the U.S. military's satellites at less cost than ULA.Changes in the geopolitical landscape also forced ULA's hand. The Atlas 5's Russian-made RD-180 main engine became part of a war of words between Russia and the United States last year, when the U.S. government instituted sanctions against Russia following its annexation of Crimea.Dmitry Rogozin, Russia's deputy prime minister, responded by saying that RD-180 engine exports to the United States could be cut off, but the threat has been empty so far. RD-180 engines are still being delivered to the ULA, officials said.But the diplomatic spat triggered legislation passed by Congress in December that outlawed buying new Russian rocket engines to launch the Pentagon's most critical space missions, putting the Atlas 5's future in jeopardy and leading ULA to fast-track the design of a replacement U.S. launcher.The company's Next Generation Launch System will also get a new name Monday after employees and space enthusiasts cast more than a million votes in an online poll.Tory Bruno, ULA's president and chief executive, said in an interview last week that Monday's announcement will set out the firm's technology roadmap through 2035. Other details, such as which launch pads the new rocket will use, are expected to be announced at a later date.The design of the new rocket's first stage booster is progressing on pace for a first launch as soon as 2019, he said. It will likely be powered by two BE-4 rocket engines under development by Blue Origin, a start-up space company established by Amazon.com founder Jeff Bezos.The BE-4 engine will burn a mixture of methane and liquid oxygen, and two of the engines will generate 1.1 million pounds of thrust at full throttle, according to Blue Origin.ULA has a contract with Aerojet Rocketdyne, builder of a line of rocket engines dating to the dawn of the Space Age, to continue designing its own U.S-built kerosene-fueled engine in case Blue Origin runs into trouble.Bruno said the first launch of the next generation rocket will use the new first stage booster topped with one of ULA's existing upper stages using a hydrogen-burning RL10 engine. A cluster of strap-on boosters could be added to haul more cargo into space, similar to the adjustable configurations used by the existing Atlas 5 and Delta 4 rocket lines."We're doing these things kind of one at a time," Bruno said. "I only have enough resources and enough funding, if you will, because we're sort of a traditional business. We have to earn a profit, and then we take money out of the profits to invest. So I can do the new engine and the first stage first, and then I'll do the upper stage second."The new upper stage will fly with a piston engine designed in partnership between ULA and Roush Fenway Racing, a motorsports enterprise that competes in NASCAR events. The system will generate electricity and pressurize the rocket's fuel tanks, transforming the upper stage into a long-lived space tug that can maneuver in space for several days. ULA president and CEO Tory Bruno. Credit: Blue Origin Engineers plan to also phase in the capability to reuse parts of the coming rocket in a bid to cut the cost of launches, but Bruno cautioned ULA is still wary of taking the same approach to reusability as SpaceX, which aims to recover its Falcon 9 rocket boosters intact, refurbish them, and fly them again.ULA's rocket unveiling in Colorado is scheduled for 4 p.m. EDT (2000 GMT) Monday, a half-hour before SpaceX plans to launch a Falcon 9 rocket from Cape Canaveral with fresh supplies for the International Space Station. Observers may be more interested in the Falcon 9's first stage maneuvers after the liftoff, which will target a vertical descent and landing on a platform stationed in the Atlantic Ocean.If successful, SpaceX says the landing experiment is just the next step in the road to making the Falcon 9 first stage reusable. Next will come lengthy inspections, ground testing, refurbishment and convincing risk-averse customers the used rocket booster is capable of another launch.According to Bruno, ULA's internal studies indicate a reused rocket stage must fly up to 15 times to be more economically attractive than flying single-use throwaway rockets."When you talk about conventional technologies on a booster like you see other people doing, and being able to recover and reuse that booster 15 times with relatively minimial refurbishmoent costs, that's pretty darn challenging, and maybe not the right place, in our view, to start on that problem," Bruno said.ULA has a concept to start recycling components of its new rocket, a strategy Bruno terms "smart reuse.""Our concept for reusability is inside that mathematics and realizes that maybe reusability does not start with entire stages -- that there are things on it that are expensive and not that hard to get back -- and a lot easier to reuse a number of times," Bruno said. "Maybe that's the right way to start approaching reusability."Bruno hinted in a speech in February at Stanford University that one starting point for ULA's reusability plan could be in the next generation rocket's engines, which could detach from their fuel tanks and descend back to Earth. Blue Origin says its BE-4 engine can be flown multiple times.The ability to retrieve and refurbish rocket components "does not appear on the first flight of that new NGLS booster," Bruno said. "We add it later, and it's for the same reason I talked about before. We're doing our whole new rocket in a series of serial steps so that we can afford that development cost."Bruno declined to disclose how much ULA is spending on the new rocket, which is currently an entirely commercial endeavor. ULA, Blue Origin and Aerojet Rocketdyne are spending internal research and development funds on the rocket.The Defense Department has funding in this year's federal budget to support the new launcher's development, but the Pentagon has not awarded contracts.Bruno did provide ballpack figures, saying new rocket engines typically cost at least $1 billion to design, test and fly. An all-new launch vehicle may cost $2 billion, he said."Our numbers are going to be be different, and I can't talk about how we divide them between ourselves and Blue Origin and ourselves and Aerojet Rocketdyne," Bruno said.The target price point for the new ULA rocket is about $100 million per "launch service," Bruno said. He said that is about half of the average price of a ULA booster today.SpaceX advertises its Falcon 9 rocket for $61 million, but Bruno said the base version of ULA's NGLS will lift more cargo into orbit than the Falcon 9. The much larger Falcon Heavy rocket, formed of three Falcon 9 booster cores strapped together, is priced at $90 million, according to SpaceX.SpaceX president Gwynne Shotwell told a House subcommittee last month that launch prices for U.S. Defense Department missions would be higher due to special technical and mission assurance requirements levied by the Air Force.Shotwell said a Falcon 9 launch for a U.S. national security payload would likely be priced between $80 million and $90 million, and an Air Force-purchased Falcon Heavy would go for more than $150 million.Follow Stephen Clark on Twitter: @StephenClark1.
ЦитатаThe new upper stage will fly with a piston engine designed in partnership between ULA and Roush Fenway Racing, a motorsports enterprise that competes in NASCAR events. The system will generate electricity and pressurize the rocket's fuel tanks, transforming the upper stage into a long-lived space tug that can maneuver in space for several days.
ЦитатаAccording to Bruno, ULA's internal studies indicate a reused rocket stage must fly up to 15 times to be more economically attractive than flying single-use throwaway rockets."When you talk about conventional technologies on a booster like you see other people doing, and being able to recover and reuse that booster 15 times with relatively minimial refurbishmoent costs, that's pretty darn challenging, and maybe not the right place, in our view, to start on that problem," Bruno said.
ЦитатаBruno hinted in a speech in February at Stanford University that one starting point for ULA's reusability plan could be in the next generation rocket's engines, which could detach from their fuel tanks and descend back to Earth. Blue Origin says its BE-4 engine can be flown multiple times.The ability to retrieve and refurbish rocket components "does not appear on the first flight of that new NGLS booster," Bruno said. "We add it later, and it's for the same reason I talked about before. We're doing our whole new rocket in a series of serial steps so that we can afford that development cost."
ЦитатаПетр Зайцев пишет: Очень впечатляет инерция сего действа. О спасении капсулы с двигателями разговор уже давно шел. Разница в том, что теперь ее будут делать на новой ракете вместо привинчивания к Атласу. Будет ли метан, еще не известно. С ACES они возятся чуть ли не с 2003-го лохматого года. То есть получается типичный Atlas VI как его видел Зейгер со товарищи еще до Гасса, только теперь Тони обещает включить их разработки в официальный план развития.Единственная интересная новость между строк - блюшники будут конкурировать за новый двигатель верхней ступени на замену RL-10. Ну и ветер им в спину. Я все равно болею за XCOR.В целом при таком консерватизме и может быть даже костности мышления они отстали от SpaceX навсегда. Лично я ожидал от Тони большего, но очевидно зря. Понятно, что на него давит ответственность, а Маску легко обещать. Но тем не менее.
ЦитатаПетр Зайцев пишет: Единственная интересная новость между строк - блюшники будут конкурировать за новый двигатель верхней ступени на замену RL-10. Ну и ветер им в спину. Я все равно болею за XCOR
Цитата2. Использование такой громоздкой схемы с "hypersonic deceleration shield" опять-таки нужно из-за ТТУ, да? Т.е., они добавляют delta-v ступени с БЕ-4 настолько, что Спейсовская схема никак не прокатит?
ЦитатаSalo пишет: Болеть, насколько я понял, надо за Roush Fenway Racing. А зачем нужна поршневая помпа стало понятно только сейчас.
ЦитатаПетр Зайцев пишет: Цитата2. Использование такой громоздкой схемы с "hypersonic deceleration shield" опять-таки нужно из-за ТТУ, да? Т.е., они добавляют delta-v ступени с БЕ-4 настолько, что Спейсовская схема никак не прокатит? Я подозреваю, что прокатила бы. Доказать не могу, конечно. Исторически Зеглер аргументировал так в AIAA 2008-7874: "In an effort to realize the benefit of reusability at realistic launch rates, developers have considered partial rocket reuse." В качестве модели полного переиспользования тогда предлагалось что-то вроде Venture Star. Понятно, что если сравнивать с таким монстром, то с-хема со спасением двигателей демонстрирует кучу преимуществ. И вот прошло 7 лет, Маск уже у порога успеха, а мы тут переиспользуем этот НИР чтобы не платить за новый.P.S. А без надувнушки, понятно, капсула сгорит. ТЗЩ ведь нет. Нужно фронтальную нагрузку на площадь улучшить, а иначе нельзя. Ну или крылья как на Байкале, или двигателем подтормозить заранее как у Маска.P.P.S. Надувной конус такого типа Тумлисон предлагал для возвращения индивидуального астронавта с орбиты без спускаемого аппарата. В общем-то не новая концепция.