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    NASA Launch Vehicles and Spacecraft: Discussion & News

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    Big_Gazza
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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  Big_Gazza on Sun Dec 27, 2015 2:27 am

    Rmf wrote:
    Big_Gazza wrote:
    Rmf wrote:
    Big_Gazza wrote:
    Project Canada wrote:U.S. space firm’s success may threaten Russian satellites


    The daily newspaper Vzglyad reports that U.S. company SpaceX's success in bringing back to Earth a unit from the Falcon-9 rocket in functioning condition is something really unimaginable. Now the delivery of cargo to near-earth orbit will be at least 10 times cheaper, writes the publication. Does this mean that the Russian Proton and Soyuz satellites will be left without a job?

    Experiments on returning the first unit of the Falcon-9 had been carried out since 2010. Only the eighth attempt, conducted on Dec. 21, 2015, was absolutely successful.

    The cost of the Falcon-9 launch is currently estimated at about $60 million. The unit returned costs $54 million. SpaceX will therefore lose only $6 million on the Falcon-9 if the unit is able to land by itself for further use.

    This could lead to a real revolution in the world space market since the delivery cost of one kilogram of cargo onto the Earth's orbit could fall to $1,100, which on average is 20 times less than on other one-time carriers.

    This would leave the Proton, Soyuz, Arian and Atlas satellites out of work, if it were not for one "but." Despite its variety, the Falcon-9 cannot replace, for example, the Proton, since the load-bearing capacity of the Russian carrier is 10 tons more.

    However, if the matter involved a large space apparatus weighing 20 tons, two Falcon-9s could deliver a 26-ton object into orbit at a cost of $12 million. One Proton can deliver a 23-ton object for $100-120 million. Therefore, using two Falcon-9s is more advantageous than one Proton, writes Vzglyad.

    Someone is channelling Musks propaganda as this is the usual hyper-optimistic fan-boi garbage.  It remains to be seen if a pre-flown F9 can be reused with anything like the reliability of a brand new unit fresh off the assembly line.  Given the experience with operating "reuseable" shuttles (which in reality were "refurbishable" shuttles requiring huge expenses between launches) I personally doubt that recovery of F9 stage will change the dynamics in a significant way.

    One question that is ignored is this - how many satellite owners will be willing to risk their expensive payloads worth several $100M on a USED launcher?  Isn't it better business sense to go for superior reliability and plug for the new item?  Launcher costs are a small part of a payloads cost in any event.

    Another factor that is regularly ignored is that flying back the booster is only achieved by accepting a huge penalty in weight delivered to orbit.  The core stage needs enough fuel to reverse its course, fly back to its pad, and then control its descent.  This F9 flight delivered a small payload of only 2.2T.  That's a large rocket for such a small payload.  The idea that "two Falcon-9s could deliver a 26-ton object into orbit at a cost of $12 million" is simply absurd.  There is NO WAY that an F9 with a recoverable 1st stage can lift 13T to LEO.

    Reuseability is a good idea, but I think Musk is barking up the wrong tree on this one.  A large fly-back booster is the better idea as it leverages off conventional aircraft technologies and established maintenance knowledge base of commercial and heavy military aircraft.  Design it with modular propulsion plant so that engines can be changed out after each flight and returned to factory for de-coking and cleanup, retest and recertification, while the flyback vehicle is fitted with another propulsion module and reflown.

    In any case, only time will tell.  The idea that Musk and his F9 will threaten Russia's space industry is simply laughable scare-mongering.

    why? shuttle rs-25 engines were refurbished and reused with 100% reliability (better then soyuz) without major problems ,and they are much bigger and older ! so your story is trash.
    usa private space has got 1 up on russians thats for sure...
    falcon 9 is bit oversized and redundancy is intristic , it uses concept of many engines but with very high thrust to weight ratio (better then famed nk-33), and when launches with 80% full load or lower , it uses spared fuel for landing first stage and its reuse.
    if some engine stops working other compensate with 110% power and you still have successful mission but without reusable stage.
    so your empty jelaous post is jus that . i warned something must change in communist style bueracracies in russian space agency but every rusophyle apologyst was talking how thats not the case.

    Shuttle RS-25s were practically rebuilt after every flight at great expense - that's part of the reason why it cost ~$1B to launch a shuttle. In this instance, reuseability failed comprehensively to deliver on its promise of cheaper access to space.

    You are comparing SpaceX Merlin engine to NK-33s???  Merlin are low-tech gas-generator engines while NK-33 is a closed-cycle master-piece.  You are correct that Merlins have a higher power-to-weight ration, but thats because it is simpler and inefficient and dumps energy overboard via its turbine exhaust while the NK-33 wastes nothing.  Thats why the NK-33 specific impulse (the TRUE measure of an engines efficiency) is 297 sec at sea level, while the poor little Merlin slouches along at 282... (at vacuum its 331 vs 311).

    I like how you point out that "if some engine stops working"....  Tell me the last time a Soyuz or Proton main engine (not vernier) "stopped working"...

    Take a look at the recovered F9 core - its engine bay and lower section is scorched from the heat of its vertical descent (the airflow carries the heat up and around the core rather than down and away as it does during ascent) and if anyone really believes that this recovered stage can simply be wiped down, refuelled and relaunched is quite frankly deluding themselves. At best, the engine bay will need to be dismantled. thermal insulation replaced, and heat-affected metallic components will need to be replaced (consider what an under-strength strut did to the previous F9 flight, now imagine the effect of heat-weakened components in the engine bay which carry the full engine thrust force).  They will likely be able to be salvaged and put under heat treatment to return them to the proper temper, but it still adds to the refurb workscope.

    "rusophyle apologyst"????  What the fuck are you smoking?  I've said NOTHING that isn't properly considered and defensible.  Maybe SpaceX have all the answers and can make a real go out of re-use of returned hardware, but its VERY POSSIBLE that like the shuttle before, the F9 reuseability promises will remain undelivered.  Again, only time will tell.
    thanks for nothing that is. rs-25 were man-rated and that increased costs much more then usual , also used older technology. this is something new and well thought out.
    wrong , its different concept , merlin d uses- lower chamber pressure and simpler gas generator, safer direct injection instead of showerplate ,and thus lighter ,cheaper ,and safer ,+ reusable engine because its componenets are not stressed mechanicaly as other engines.
     
                                 ....  ISP
    RD-180 26,700 kPa 338
    NK-33 14,500 kPa 331
    Merlin 1D 9,700  kPa 311

    their ""loss"" of only less then 10% ISP for all that gain in other areas is actually  impressive!!
    Wrong again ,its core stage on return is empty of fuel so it uses only 1 of 9 engines to land. ahahahaha...
    and even that 1 is refurbished withour problem you dont need much thrust for empty core stage and youre going down not lifting anyway ,its black from coal dirt deposit and its nothing.
    but continue russophyle apologyst....

    There you go with your stupid "russophyle apologyst" crap.  I don't even mention Russia, you sign off with a Russian flag, yet I'M the "russophyle apologyst"?

    ISP is king, regardless of your assertions, and for a given set of propellants, ISP is proportional to chamber pressure.  Reducing chamber pressure to increase reliability to achieve man-rating is perfectly fine, but it sacrifices performance, and the alternative technique is to build heavier but more robust engines to not only handle the high pressures, but can also withstand multiple full-duration firings.  SpaceX adopts the former, while Energomash adopts the later.  Which is the better path is open for debate, but I prefer the Energomash approach, especially as their products are staged combustion, and RD-series engines, once lit, go like blazes and don't quit.

    Ask yourself - if Musk/SpaceX concept of using a large number of smaller simpler engines is such a winner, why does ULA and the US Military still insist in using RD-180s (despite the political issues), and why do so many in the US want to exercise their negotiated rights to start manufacture in US under license? Why does the Atlas use a single large chamber engine per core? Why do Ariane 5 core use a single engine?

    Musk & Space X also claim their engine config has been developed for using a single unit as a return engine, but this isn't overly convincing.  Design specification for a low thrust return engine burning for extended periods are very different from a main ascent engine, and trying to do the same job with a single design places too many design constraints on the engines main job of getting to altitude.  The Merlin cannot be throttled to very low thrust levels and this mandates a landing trajectory at a high decent rate and a sudden deceleration just prior to touchdown.  Its a finicky maneuver and difficult in practice.   A much better config would be use of 3-4 RD-180 class engines with a dedicated centreline descent engine optimized for low thrust and capable of wide throttle operation.  Bring the stage down at a more leisurely and controlled pace, and have the ability to hover precisely and stabilize prior to committing to the touchdown. SpaceX didn't do this, because they were ideologically wedded to the idea of 100% in-house hardware and lacked the tech for world-class high performance engines, so they had to cobble together a reuseable scheme based on what they could build and then make it work however well they can.

    Face facts - the Merlin is a poor-mans engine, and Musk has chosen this approach simply because he lacks the IP for better technology (and doesn't want to pay to buy them).  SpaceX hypes their "cheaper & simpler" engine design but  the rationale for clustering large numbers of combustion chambers is the same today as when Korolev was forced to cluster 30x NK15s on the N1 1st stage due to lack of availability of a suitable large chamber engine. Musk might emphasis the advantages of an "engine out" capability, but simply using a large number of engines increases the chance of a single unit failure, so I don't see any real advantage, especially when RD-series engine reliability is taken into account.

    Edit: I should add however that I do like the Merlin engine for using high-pressure fuel from the turbopump to supply hydraulic power to engine gimbal mechanism. The advantages are that a heavy HPU and fluid reservoir is not required, and it eliminates any risk of losing hydraulic pressure due to a shortage of fluid.
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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  Rmf on Mon Dec 28, 2015 9:44 pm

    there is some thrust augmentation due to engine spacing and incoming air heating and expanding underneath it. even n-1 was using that effect.
    like i said less then 10% loss of isp is impressive for simplicity ,less parts, and low pressure chamber which other cheaper and easily produced materials can be used and still be reusable. tolerances are amazing. you can put small steel bearing and pump would still works thats advantage of gas generator compared to closed cycle , and closed cycle engines are heavier ,and because combustion pressure is low you dont waste much fuel for gas generator anyways ,lol. there is usually always some fuel left in primary stages i am surprised you didnt know ,because you never cutoff at 0 fuel but at 2-5% fuel because you can have instability... so 5% -7%even that is enough to land.
    and youre wrong -combustion pressure doesnt increase isp proportionatly, but very slightly the higher you go ,less and less gain you have.
    merlin still cant replace rd-180 its stupid they are diferent categories -i cant belive you pull this off only to discredit yourself.
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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Fri Jan 15, 2016 4:13 pm

    NASA Picks Orbital ATK, SNC Space Systems, SpaceX to Deliver Cargo to ISS

    NASA has selected Orbital ATK, Sierra Nevada Corporation’s Space Systems and SpaceX to deliver cargo to ISS.

    WASHINGTON (Sputnik) — The US National Aeronautics and Space Administration (NASA) has selected Orbital ATK, Sierra Nevada Corporation’s (SNC) Space Systems and SpaceX to deliver cargo to the International Space Station (ISS) in 2019-2024.

    "Each contract guarantees a minimum of six missions, however, as of today, we have not yet ordered any of those missions," Sam Scimemi, director of the ISS division of NASA said on Thursday.

    NASA’s competition for commercial resupply mission (CRS) contracts ended on Thursday.

    SpaceX, Boeing, Orbital ATK, Lockheed Martin and SNC Space Systems had submitted bids for the CRS contracts.

    Two of the winners – California-based SpaceX and Virginia-based Orbital ATK — currently fly cargo to the ISS. Their contracts expire in 2017.

    The third winner, SNC Space Systems, has developed the Dream Chaser Cargo System, a robotic cargo variant of its Dream Chaser spaceplane, in a bid to win a NASA CRS contract.

    Read more: http://sputniknews.com/science/20160115/1033158189/nasa-picks-atc-snc-spacex.html#ixzz3xKI724KW


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    U.S. space firm’s success may threaten Russian satellites

    Post  Big_Gazza on Mon Jan 18, 2016 1:39 am

    PapaDragon wrote:
    Rmf wrote:............................................
    thanks for nothing that is. rs-25 were man-rated and that increased costs much more then usual , also used older technology. this is something new and well thought out.
    wrong , its different concept , merlin d uses- lower chamber pressure and simpler gas generator, safer direct injection instead of showerplate ,and thus lighter ,cheaper ,and safer ,+ reusable engine because its componenets are not stressed mechanicaly as other engines.
     
                                 ....  ISP
    RD-180 26,700 kPa 338
    NK-33 14,500 kPa 331
    Merlin 1D 9,700  kPa 311

    their ""loss"" of only less then 10% ISP for all that gain in other areas is actually  impressive!!
    Wrong again ,its core stage on return is empty of fuel so it uses only 1 of 9 engines to land. ahahahaha...
    and even that 1 is refurbished withour problem you dont need much thrust for empty core stage and youre going down not lifting anyway ,its black from coal dirt deposit and its nothing.
    but continue russophyle apologyst....


    1) Method for engine retrieval used by SpaceX is most complicated and inefficient there is.

    2) Airbag/parachute combo is far cheaper and superior.

    3) Airbag/parachute combo is also what will most likely be used for Angara engine retrieval as announced already by Roskosmos.


    This may be hard to swallow for SpaceX fanboy like yourself but by all criteria SpaceX is at most 2nd best launch company in USA.

    We know you want some of that Elon's musk but he is simply No.2

    http://comedycentral.mtvnimages.com/images/shows/south-park/clip-thumbnails/season-11/1109/south-park-s11e09c14-bono-is-crap-16x9.jpg?


    Your observations are supported by todays failed attempt at a F9 landing on sea barge.  Vehicle apparently tipped over due to a failure of a landing strut to open and lock in place.  My personal preference is to leverage existing technology of UAV flight controls and flyback the core on a glide profile using a pivioted deployable wing and small air-breathing engine to increase cross range capability or to provide an emergency go-around capability, similar to the Baikal concept.  Mass penalty would be higher with the wing and engine (and landing gear/skids) as opposed to carrying the fuel margin for a controlled descent, but I'd suggest that the technique is more reliable and much less thermally stressful on the engine bay. One disadvantage is the need for a landing strip, but this is not too significant for State-owned enterprises operating from established Cosmodromes (whereas private operators like SpaceX would balk at the cost of establishing and maintaining such facilities).

    More info on todays F9 launch follows (which is still a full success BTW as the payload is up safe and sound).

    http://spaceflightnow.com/2016/01/17/falcon-9-jason-3-mission-status-center/


    Last edited by Big_Gazza on Mon Jan 18, 2016 4:06 am; edited 1 time in total
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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Sat Jan 23, 2016 3:18 am

    NASA Starts Working on Huge 'Spy Telescope' (VIDEO)

    NASA is set to begin the construction of a flagship space observatory that will use a decommissioned top secret spy satellite telescope, with a field of view 200 times wider than that of the Hubble Space Telescope and capable of studying exotic dark matter, distant exoplanets and the formation of faraway solar systems.

    The Wide Field Infrared Survey Telescope, or simply WFIRST, will begin its first build stage in February, according to agency officials.

    The telescope, to be mounted into the new observatory, was originally designed for the National Reconnaissance Office, America’s spy satellite agency, and previously flew surveillance missions.

    The telescope’s 2.4 meter mirrors are the same as those used in Hubble, and, coupled with new electronics, allow seeing space in near-infrared wavelengths at greater depth than previously measured.

    WFIRST will be also equipped with a sensitive coronagraph, an instrument used to block extremely bright surfaces, such as stars, allowing the observation of objects such as exoplanets in greater detail.

    Other mission specifications and requirements will be detailed during the construction phase, according to David Spergel, co-chair of the WFIRST science definition team.

    "An example of something that we will decide during formulation is the filters that we will use. We need to weigh the relative merits of being sensitive to bluer photons versus having sharper wavelength coverage" Spergel outlined in an interview with Discovery News. "Improved blue sensitivity will help us better characterize the properties of stars in nearby galaxies, but possibly at the cost of less accurate determination of distance to galaxies through photometry," he added.

    Congress has currently allocated some $90 million to NASA for the 2016 fiscal year, six times more than agency initially requested. Due to the financial boost the build phase will start a month ahead of a schedule.

    The mission is expected to be launched by 2024, and to spend some six years at the L2 Lagrange point, a location a million miles from Earth in the direction away from the sun.



    Read more: http://sputniknews.com/art_living/20160123/1033583737/nasa-spy-telescope.html#ixzz3y1uxdSCq


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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  max steel on Sat Jan 23, 2016 12:41 pm

    US gov increasing funds for NASA meanwhile Russian govt cutting funds for its Aerospace Industry. pale
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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Thu Jan 28, 2016 10:49 am

    Aerospace company Blue Origin announced that it has successfully landed a booster that was previously launched and landed, marking a first in the pursuit of reusable space technology.

    Read more: http://sputniknews.com/science/20160126/1033700072/blue-origin-reuses-rocket.html#ixzz3yWzQgekM



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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  max steel on Fri Feb 05, 2016 11:02 pm

    NASA’s New Super-Fast Solar Ship May Have Just Revolutionized How We Explore Space

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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Tue Feb 23, 2016 1:43 pm

    NASA Wants to Use Spy Telescope for Science

    What once was used to spy on rival nations will now be turned toward the cosmos.

    After nearly 30 years of flawless service, the Hubble Space Telescope is expected to go into retirement in 2020. After capturing thousands of stunning images and contributing to humanity’s fundamental understanding of the universe, Hubble will have degraded beyond functionality, and will be left to drift in orbit before being pulled by Earth’s gravity to a fiery end during reentry.

    To make up for the loss, NASA will need new tools. The James Webb Space Telescope (JWST) is set to launch in 2018, but scientists have another trick up their sleeve. With the permission of the National Reconnaissance Office, NASA will use hardware repurposed from spy satellites to launch the Wide Field Infrared Survey Telescope (WFIRST).

    "WFIRST has the potential to open our eyes to the wonders of the universe, much the same way Hubble has," John Grunsfield, Hubble repair astronaut and associate administrator of NASA’s Science Mission Directorate, said in a statement.

    "This mission uniquely combines the ability to discover and characterize planets beyond our own solar system with the sensitivity and optics to look wide and deep into the universe in a quest to unravel the mysteries of dark energy and dark matter."

    To accomplish these goals, the telescope will be equipped with several instruments. A wide-field camera, similar to the one installed on Hubble, will be used to measure how fast the universe is expanding.

    Those measurements will rely partially on observing distances between supernovas.

    "WFIRST is designed to address science areas identified as top priorities by the astronomical community," said Paul Hertz, director of NASA’s Astrophysics Division, in a statement.

    "The Wide-Field instrument will give the telescope the ability to capture a single image with the depth and quality of Hubble, but covering 100 times the area. The coronagraph will provide revolutionary science, capturing the faint, but direct images of distant gaseous worlds and super-Earths."

    The telescope will also feature a coronagraph, a device that blocks light from stars, in order to hunt planets circling close to their host, and use atmosphere scanning equipment to better characterize exoplanets.

    NASA hopes to launch WFIRST in the mid-2020s.

    "In addition to its exciting capabilities for dark energy and exoplanets, WFIRST will provide a treasure trove of exquisite data for all astronomers," said Neil Gehrels, project scientist with NASA’s Goddard Space Flight Center, in a statement.

    "This mission will survey the universe to find the most interesting objects out there," he claims.

    Read more: http://sputniknews.com/science/20160223/1035195339/nasa-wfirst-telescope.html#ixzz40ziZva8p


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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Fri Mar 11, 2016 11:44 pm

    Launch of Dragon Spacecraft to ISS Postponed Until April

    Read more: http://sputniknews.com/science/20160310/1036097362/dragon-laaunch-postponed-april.html#ixzz42dYw5Vf3


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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Wed Mar 23, 2016 9:27 am

    Cygnus rocket carrying supplies for ISS blasts off from Cape Canaveral

    More:
    http://tass.ru/en/science/864414


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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Fri Mar 25, 2016 3:05 pm

    US Aerospace Company Completes Preliminary Design Review for Vulcan Centaur

    Read more: http://sputniknews.com/us/20160324/1036926371/us-vehicle-launch-engine.html#ixzz43vJlCxYb


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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Fri Apr 08, 2016 10:24 am

    Dragon Spacecraft to Fly to International Space Station on Friday

    The US SpaceX aerospace manufacturer will carry out the first Dragon resupply flight to the International Space Station (ISS) in nearly a year on Friday, also attempting yet another drone ship landing.

    WASHINGTON (Sputnik) – The launch of the Dragon cargo spacecraft is scheduled for 20:43 GMT, April 8, from Cape Canaveral Air Force Station in Florida, according to the US National Aeronautics and Space Administration (NASA). The robotic spacecraft will be launched using the Falcon 9 carrier rocket.

    In June 2015, A Falcon 9 rocket with a Dragon cargo ship carrying supplies to the ISS exploded 3 minutes after it had been launched from Cape Canaveral. SpaceX has since modified the Falcon 9 rocket and the Friday launch, which is the first Dragon mission since last year’s accident, will be carried out using the upgraded model.

    SpaceX will also try to get the first stage of the two-stage Falcon 9 rocket to land on a drone ship.

    In December 2015, SpaceX succeeded in making Falcon’s reusable first stage land upright about 6 miles from where it was launched at Cape Canaveral, Florida. The rest of the company’s attempts to have rocket boosters land on a drone ship have failed.

    Read more: http://sputniknews.com/science/20160408/1037669810/dragon-flies-iss-friday.html#ixzz45DnLCJAC


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    Boeing's XS-1 spaceplane design

    Post  max steel on Wed Apr 13, 2016 3:34 pm

    DARPA to hold open competition for XS-1 demonstration phase

    DARPA has been working with industry teams Boeing-Blue Origin, Masten Space Systems-XCOR Aerospace and Northrop Grumman-Virgin Galactic to mature three competing designs. However, it will select just one team for Phase II and III, worth up to $140 million.

    Brad Tousley, who heads the agency’s tactical technology office, says there are now enough mature concepts on the market to warrant a full and open competition.

    His believes that enough progress has been made in the commercial space sector since the original solicitation for Phase Zero in 2013 that it will be worthwhile accepting bids from incumbents and those not involved in the initial government-sponsored design phases.

    “We expect that the current three performers will bid,” Tousley said at the 32nd annual space symposium in Colorado Springs, Colorado on 12 March. “We don’t think it’s necessary for some to go through phase zero and phase one because of their maturity. There’s a lot going on in the commercial sector.”

    Boeing's XS-1 spaceplane design:



    The XS-1 programme aims to launch 10 payloads into space over 10 days using a two-stage launch system comprised of a business jet-sized spaceplane and second-stage launch vehicle or rocket.

    The spaceplane would have a turnaround time between recovery and relaunch of less than 24h, and would ultimately be capable of putting a 1,360kg (3,000lb) payload into low Earth orbit for under $5 million.

    DARPA is preparing a solicitation for the next phase, Phase II, which covers “final design, fabrication, and integration assembly and test”. A “proposers day” will be held in Arlington, Virginia on 29 April.

    Northrop's XS-1 concept :

    Tousley expects that XS-1 will succeed where other spaceplane programmes like the Rockwell X-30 National Aero-Space Plane (NASP) and Lockheed Martin X-33 failed by focusing on affordability and technological maturity.
    “This is not quite the challenge of the Space Shuttle, because obviously the Mach numbers are much less,” he says, noting that the maximum speed required will be Mach 10. “In contrast to other programmes we’ve had in the past, we’re not developing new engines here. It’s about integrating existing engines, and making sure those existing engines have been robustly tested.”

    Those propulsion systems must be “ready for flight no later than fiscal year 2020,” according to the 7 April XS-1 proposers day notice.

    If successful, Tousley believes there will be an immediate need for the XS-1 system to launch both commercial and national security payloads.

    “It’s very difficult. It’s worth going after,” he says. “We think it has national security applications and commercial applications and will have a positive impact on the launch market.”

    Masten' XS-1 proposal:

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    Delta 4 Heavy rocket with a US intelligence satellite was launched in Florida

    Post  max steel on Mon Jun 13, 2016 4:57 pm

    Delta 4 Heavy rocket with a US intelligence satellite was launched in Florida

    Delta 4 Heavy rocket launched in Florida carrying US intelligence satellite.

    It is considered the most powerful rocket used by US, it displays the satellite into orbit for the central control of the military and space exploration.

    In this start, which took place today at 20:51 Moscow time, I was supposed to occur more June 9 but was postponed due to weather conditions.

    As reported by "RIA Novosti", the machine can be used for listening and collecting intelligence.
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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  max steel on Wed Jun 15, 2016 9:03 pm

    SpaceX launches satellites but fails to recover rocket

    SpaceX successfully launched two satellites into orbit on Wednesday, but failed in an attempt to land the first stage of its Falcon 9 rocket undamaged on a barge in the Atlantic.

    The rocket apparently malfunctioned some 330 feet (70 meters) off the ground and was in flames when it reached the platform on the powered barge—known as a drone ship—live images via a SpaceX webcast showed. SpaceX chief Elon Musk later confirmed the failure on Twitter.

    "Ascent phase & satellites look good, but booster rocket had a RUD on droneship," he wrote, using an acronym for "rapid unscheduled disassembly," or explosion.

    The rocket shook the barge when it landed, causing the ship's camera to freeze. The final images showed the craft standing upright, enveloped in flames and thick smoke. The rocket earlier successfully boosted into orbit a communications satellite for the French firm Eutelsat and another for Bermuda-based ABS.

    The launch from Florida's Cape Canaveral took place at 10:29 am (1429 GMT) and the satellites deployed around 30 minutes later.
    It was SpaceX's sixth launch of the year.Wednesday's failure ends a recent streak of landing successes. The California-based company has successfully landed the first stages of its Falcon 9 rockets three times—twice on water and once on land.

    Musk wants to revolutionize the launch industry by making rocket components reusable, much the same way as commercial airplanes.
    Expensive rocket parts are currently jettisoned into the ocean after each launch. SpaceX is next set to launch a cargo resupply mission to the International Space Station for NASA next month.


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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Mon Aug 22, 2016 3:38 pm



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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Thu Sep 01, 2016 11:10 pm

    Explosion rocks SpaceX launch site in Florida during test — AP

    Eyewitnesses reported that a cloud of dark smoke filled the overcast sky

    EW YORK, September 1. /TASS/. - An explosion has rocked the SpaceX launch site in Florida during a routine test firing of an unmanned rocket, the Associated Press reported on Thursday.

    The test was conducted in advance of an Israeli satellite launch planned for Saturday from Cape Canaveral Air Force Station.

    Eyewitnesses reported that a cloud of dark smoke filled the overcast sky.

    Florida Today news portal said quoting the local emergency management office that the blast was no threat to general public.


    More:
    http://tass.com/science/897110


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    Space-X launch pad explosion

    Post  kvs on Fri Sep 02, 2016 2:07 am

    https://www.youtube.com/watch?v=_BgJEXQkjNQ

    I have never seen such a failure mode before. It is as if the final stage rockets ignited while the rocket was still on the ground.

    Maybe Hollywood can use this actual footage for some Superman vs. Batman movie in the future instead of a cheesy edit of a
    Soyuz rocket explosion that never happened.
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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  OminousSpudd on Fri Sep 02, 2016 2:10 am

    Beautiful... I mean, how tragic.
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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  GarryB on Fri Sep 02, 2016 10:44 am

    Such a failure will be expensive.

    Not just exploding on the launchpad with the payload on board, but added to previous failures to recover the rocket after use will be putting enormous pressure on them.

    After all if you plan to be able to recover and reuse rockets and you can't because they are exploding on landing, or worse... exploding before launch with the expensive payload on board it becomes very very hard to make that money back.

    This will really screw up their business model if they can't sort this out.


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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Tue Sep 13, 2016 12:50 am

    The project of company's Blue Origin space heavy launcher



    http://bmpd.livejournal.com/2124516.html


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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Mon Dec 12, 2016 7:41 pm



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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Mon Feb 20, 2017 5:12 pm

    US’ SpaceX launches Dragon spacecraft to ISS

    More:
    http://tass.com/science/931777


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    Re: NASA Launch Vehicles and Spacecraft: Discussion & News

    Post  George1 on Fri Mar 31, 2017 10:37 am

    SpaceX conducts first re-launch of Falcon 9 rocket

    The booster of a previously flown Falcon 9 carrier rocket blasted off from Cape Canaveral and successfully landed on a drone ship

    NEW YORK, March 31. /TASS/. The first stage of a previously flown Falcon 9 carrier rocket blasted off from Cape Canaveral and successfully landed on the SpaceX drone ship in the Atlantic Ocean, SpaceX representatives announced.

    Thursday’s mission, carrying the SES-10 telecoms satellite, took off from Florida’s Kennedy Space Center at 18:27 local time (22:27 GMT) and successfully landed the booster again.

    The mission made use of the rocket that blasted off for the first time in April 2016 to deliver the Dragon spacecraft to the International Space Station (ISS). The rocket performed the company's first ever successful ship landing when it landed on a drone ship in the Atlantic.

    Thursday’s launch marks another success in the project by SpaceX to build reusable rockets that can be launched, landed and relaunched several times before they reach operational limits.

    So far, SpaceX has managed to land eight Falcon 9 boosters, but no re-launches were carried out to date.


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