Автор Salo, 04.12.2013 01:59:14
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ЦитатаBlue Origin is one of four NASA partners working with the agency's Commercial Crew Program to develop new capabilities to transport people to low-Earth orbit. Ultimately, NASA intends to certify and use commercial systems to fly astronauts from the United States to the International Space Station and back. Click here for a printable version of this poster.
ЦитатаOne milestone covers an in-flight test of a "pusher" escape system, where rocket engines at the base of the vehicle would push the spacecraft away from its launch vehicle in the event of an abort. Under the CCDev2 milestone, NASA personnel would review data and video from the test, which would use an unspecified subscale booster.A second milestone involves a flight test of Blue Origin's BE-3 rocket engine, a liquid oxygen/liquid hydrogen engine that the company has tested on the ground in earlier milestones. That flight would test the engine on a "representative suborbital mission," which NASA personnel would be invited to observe.The third milestone involves a flight test of a subscale propellant tank, also on a representative suborbital mission. The assembly review for that tank was a milestone in a prior unfunded extension of Blue Origin's CCDev2 agreement.The extension states that the BE-3 and propellant tank milestones would be achieved by September 2015, while the pusher escape system test milestone is scheduled for March 2016. The overall agreement now expires April 17, 2016.
ЦитатаBlue Origin has completed testing of one engine it is developing for its own suborbital vehicle as it continues work on a second, much larger engine for United Launch Alliance's new orbital launch vehicle, the company announced April 7.The company said it had recently completed acceptance testing of the BE-3 engine after several years of work, allowing the company to move forward with test flights of its New Shepard vehicle later this year from its test site in West Texas. Those flight tests will ultimately lead to commercial suborbital flights later this decade."The acceptance testing came at the tail end of a very, very long development program," Blue Origin President Rob Meyerson said in an April 7 teleconference with reporters. That included 450 tests of the engine, with a cumulative running time of more than 500 minutes.BE-3 uses liquid hydrogen and liquid oxygen propellants, which the company said makes it the first engine with that propellant combination developed in the United States in more than a decade. The engine can generate up to 110,000 pounds of thrust, but can be throttled down to 20,000 pounds. Such "deep throttling" is useful for vehicles that, like New Shepard, plan to take off and land vertically.
ЦитатаHe added that while Blue Origin developed the BE-3 for its own vehicle, it is making the engine available commercially as well. The company is working on a version of the engine, designated BE-3U, for use in upper stages, including a future orbital launch vehicle in the company's long-term plans.
Цитатаоктоген пишет: Интересен его вакуумный уи. Думаю что в районе 420-430 с.
ЦитатаАнтон пишет: В связи с возможностью использования на ACES BE-3U вместо RL-10 хочу спросить, у BE-3U что тоже тяга в 50 тонн будет?
ЦитатаОлег Шляпин написал: Аппарат состоит из ракетного модуля и капсулы, где смогут разместиться три астронавта.
ЦитатаЧебурашка написал:На второй ступени New Glenn BE-3U будет