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Thread: Blue Origin's launch vehicles

  1. #61
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    Quote Originally Posted by bknight View Post
    I don't believe you are using the common definition of outer space:

    https://en.wikipedia.org/wiki/Atmosp...0outer%20space.



    So yes there was a reentry.
    You can't "reenter" what you never left. The only physical meaning of the Karman line is as an upper boundary to sustained aerodynamic flight, there's no physical basis for equating that with the beginning of "outer space". There's plenty of atmosphere up there: meteoroids can be seen burning up as high as 120 km.

    And of course, the whole reason reentry is significant for spaceflight is the reentry speeds dictated by the physics of spaceflight, which are not shared by these vehicles that fly vertically up to the boundary and barely cross it.

  2. #62
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    Quote Originally Posted by cjameshuff View Post
    You can't "reenter" what you never left. The only physical meaning of the Karman line is as an upper boundary to sustained aerodynamic flight, there's no physical basis for equating that with the beginning of "outer space". There's plenty of atmosphere up there: meteoroids can be seen burning up as high as 120 km.

    And of course, the whole reason reentry is significant for spaceflight is the reentry speeds dictated by the physics of spaceflight, which are not shared by these vehicles that fly vertically up to the boundary and barely cross it.
    All sources that I remember seeing uses reentry in this case. Often qualifying it as suborbital reentry but orbital reentry is pretty wussy compared to lunar return reentry and so on and so forth. It is a very mild case of reentry but then it is designed to be mild.

  3. #63
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    Quote Originally Posted by cjameshuff View Post
    You can't "reenter" what you never left. The only physical meaning of the Karman line is as an upper boundary to sustained aerodynamic flight, there's no physical basis for equating that with the beginning of "outer space". There's plenty of atmosphere up there: meteoroids can be seen burning up as high as 120 km.

    And of course, the whole reason reentry is significant for spaceflight is the reentry speeds dictated by the physics of spaceflight, which are not shared by these vehicles that fly vertically up to the boundary and barely cross it.
    So if you're in outer space then you are not in the atmosphere any longer, thus reentry.
    I'm not disagreeing that there is very thin atmospheric conditions but by definition it is outer space.
    The shuttle interface was 400000 feet ~50000 above where the Glenn reached.
    https://spaceflight.nasa.gov/shuttle.../events/entry/

    Same for Apollo:
    191:20:55 PAO: This is Apollo Control; present altitude, 4,296 nautical miles [7,956 km]; 27 minutes away from Entry Interface. About 12 minutes away from separating the Service Module from the Command Module; this takes place at 15 minutes prior to 400,000 feet (121,920 metres], or what is called Entry Interface. Still live on air-to-ground.
    if you are opposed to my using the definition then say so, because it is in place.

  4. #64
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    I've changed the title to cover all of Blue Origins launch vehicles.
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  5. #65
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    Thank you. Bezos is stepping down from Amazon, so as to focus on other projects. He could beat Musk in three easy steps: . First........fire the talking heads. Second...give his checkbook to Gary Hudson. Third? Walk away :-P

  6. #66
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    Jeff Bezos’ role at Blue Origin hints at how his profile at Amazon is likely to change. Back in 2018, he said Blue Origin was “the most important work that I’m doing.”

    https://www.geekwire.com/2021/jeff-b...likely-change/
    Do good work. —Virgil Ivan "Gus" Grissom

  7. #67
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    An unleashed Jeff Bezos will seek to shift space venture Blue Origin into hyperdrive. "Blue Origin has fallen far behind SpaceX on orbital transportation, and lost out to SpaceX and United Launch Alliance (ULA) on billions of dollars’ worth of U.S. national security launch contracts which begin in 2022. ULA is a joint venture of Boeing Co and Lockheed Martin Corp. Now, Blue Origin is battling to win a competition with SpaceX and Dynetics to develop a new lunar lander for NASA’s potentially multibillion-dollar push to return humans to the moon in a few years. Dynetics is owned by Leidos Holdings Inc. Winning the lunar lander contract - and executing its development - are seen by Bezos and other executives as vital to Blue Origin establishing itself as a desired partner for NASA, and also putting Blue on the road to turning a profit, the people said."

    https://www.reuters.com/article/spac...-idUSL1N2K908X
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  8. #68
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    I have heard that the New Armstrong was not a serious proposal. A hydrolox Big Onion design would be the cleanest option-and put Starship to shame.

  9. #69
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    Blue Origin is pushing back the first launch of its New Glenn rocket to late 2022, saying it “re-baselined” the development of the launch vehicle after losing a key Pentagon contract last year.

    https://spacenews.com/blue-origin-de...-to-late-2022/
    Do good work. —Virgil Ivan "Gus" Grissom

  10. #70
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    Quote Originally Posted by publiusr View Post
    I have heard that the New Armstrong was not a serious proposal. A hydrolox Big Onion design would be the cleanest option-and put Starship to shame.
    They've never publicly released anything more than the name and general idea of a larger successor. I don't see how they could be "not serious" about the idea of a follow-on to the New Glenn.

    LEO/Big Onion was a SSTO with hydrolox sustainer and RP-1 booster engines, you would not get the thrust required or have room for the propellant required with a pure hydrolox system. It would have had about twice as many engines as Starship's first booster, 8 times the dry mass of Starship itself, would only get twice the payload to orbit, and orbital refueling would be pointless due to the huge dry mass, making it useless for anything beyond low orbit. It also would have required an artificial lagoon for a launch site and a 5 km wide artificial pond as a landing site. Inflation-adjusted launch costs would be about $50M/flight, estimated development costs >$40B.

    If SpaceX gets close to their cost goals, two Starships would be able to get the same payload to orbit cheaper. The 18m Starship Musk has suggested as a possible future development would put at least twice as much payload into orbit in one shot.

  11. #71
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    Quote Originally Posted by Roger E. Moore View Post
    Blue Origin is pushing back the first launch of its New Glenn rocket to late 2022, saying it “re-baselined” the development of the launch vehicle after losing a key Pentagon contract last year.

    https://spacenews.com/blue-origin-de...-to-late-2022/
    Oh dear, who could possibly have foreseen this. What a shock.

    The "re-baselined" excuse is particularly odd and unconvincing though, especially since they claim it's about finances. The contract they lost would only have gotten them a couple hundred million at most by the time of the launch, they never seriously had a good chance of getting it given the competition, and Bezos has been pouring a billion dollars a year into the company for several years now. Maybe they should have tried to control costs a bit more on their $1B launch pad?

  12. #72
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  13. #73
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    Blue Origin’s massive New Glenn rocket is delayed for years. What went wrong? The big delay can be traced to a decision Jeff Bezos made years ago.

    https://arstechnica.com/science/2021...-glenn-rocket/
    Do good work. —Virgil Ivan "Gus" Grissom

  14. #74
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    NASA has signed an agreement with Blue Origin to use that company’s New Shepard suborbital vehicle for flights that will simulate the reduced gravity on the surface of the moon. NASA said March 9 that it is supporting upgrades to New Shepard to allow the vehicle to briefly similar lunar gravity on its suborbital flights. On those flights, the vehicle’s crew capsule will use reaction control thrusters to spin at a rate of 11 revolutions per minute, turning it into a centrifuge that can simulate lunar gravity — approximately one-sixth of Earth’s gravity — for more than two minutes.

    https://spacenews.com/blue-origin-to...ghts-for-nasa/
    Do good work. —Virgil Ivan "Gus" Grissom

  15. #75
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    Blue Origin New Shepard-15 could fly as soon as Wednesday...

    https://twitter.com/thesheetztweetz/...68888525139968

  16. #76
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    More details on the test.

    https://spacenews.com/blue-origin-to...epard-flights/

    A test flight of Blue Origin’s New Shepard suborbital vehicle, scheduled for as soon as April 14, will be a dress rehearsal for long-awaited crewed flights.

    Blue Origin said April 12 that it will perform “astronaut operational exercises” before and after the flight of the vehicle at the company’s West Texas test site. That launch is scheduled for a window that opens at 9 a.m. Eastern April 14. Launch opportunities run through April 17, according to temporary flight restrictions published by the Federal Aviation Administration.

    During prelaunch preparations, Blue Origin personnel will board the vehicle, strap into seats and test communications, much as astronauts flying on the vehicle would do. Ground personnel will close the hatch briefly, simulating closeouts prior to launch, before opening the hatch again and allowing the personnel to exit the capsule.
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  17. #77
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    Blue origin aces dress rehearsal for new Shepherd crewed flights.

    Blue Origin completed another test flight of its New Shepard vehicle April 14, putting the company on the verge of finally flying people.

    Blue Origin’s New Shepard vehicle lifted off from the company’s West Texas test site, known as Launch Site One by the company, at 12:51 p.m. Eastern. The capsule, separating from its booster after the powered phase of flight, reached a peak altitude of about 106 kilometers before parachuting to a soft landing 10 and a half minutes after liftoff, three minutes after the booster made a powered landing.
    https://spacenews.com/blue-origin-ac...rewed-flights/

    https://www.youtube.com/watch?v=domwsgorRW0
    Last edited by DavidLondon; 2021-Apr-14 at 09:52 PM.

  18. #78
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    The cargo lunar lander. https://www.geekwire.com/2021/blue-o...-lunar-lander/ Maybe his mind was on other stuff, there was a $38 billion divorce settlement also ... Jeff Bezos to Start Treating Employees Better? https://gizmodo.com/jeff-bezos-tells...ile-1846690165 Too late to change horse now, I dont know if you guys know the James Bond spoof comedy movie 'Johnny English' the actor Rowan Atkinson. Bezos might get there, one day get there some long time in the future but it I feel it would be like the invention of the Fuldamobil or 'Reliant Regal' a 3-wheeled Mr.Bean style car which came 100 yrs after the invention of the automobile. Anything they do now until they actually start launching rockets, it's likely outdated. Here's the Brutal Truth: Elon Musk Won. Jeff Bezos Lost. https://flipboard.com/article/here-s...4a40%2Finc.com

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