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posted by martyb on Tuesday February 21 2017, @09:44AM   Printer-friendly
from the giving-launches-a-lift dept.

The Belfast Telegraph reports on the Spaceflight Bill, proposed legislation that is to be put before Parliament this week.

The government issued a statement on the proposed legislation. According to the statement, Britain could build space-ports on its own territory "by 2020."

Whether the launch facilities would be on the home islands, in the British Overseas Territories (which include islands in the Caribbean such as Montserrat), or both was unclear to the submitter.

[What, if any, advantages are there for launching from Britain vs a location in the Caribbean? -Ed.]


Original Submission

 
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  • (Score: 5, Interesting) by subs on Tuesday February 21 2017, @09:58AM

    by subs (4485) on Tuesday February 21 2017, @09:58AM (#469636)

    Depends on where you want to go:
    1) Carribean: good for equatorial orbits (communications satellites, commercial stuff), limited infrastructure, "far from home". This last element is why most commercial launches in the US are conducted from Florida rather than Kwajalein atoll, even though Kwajalein is closer to the equator.
    2) Northern Scotland: good for polar orbits (earth observation satellites, weather, military stuff), good infrastructure, "close to home" and close to various other military infrastructure in the north of Scotland. Launches from Scotland to the equator are difficult, since launching vehicles could overfly Denmark, Sweden, Poland or the Baltic states, none of which would be too happy about your dropping spent rocket stages on their densely populated areas - this basically puts severe limits on launch vehicle design, as staging would need to be designed to very tight windows, which can make launch vehicle design much more complicated.

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  • (Score: 0) by Anonymous Coward on Tuesday February 21 2017, @10:44AM

    by Anonymous Coward on Tuesday February 21 2017, @10:44AM (#469649)

    Northern Scotland: Bad (from the English perspective) if Scotland decides to leave UK. Because then it won't be domestic any longer.

    • (Score: 0) by Anonymous Coward on Tuesday February 21 2017, @07:57PM

      by Anonymous Coward on Tuesday February 21 2017, @07:57PM (#469852)

      Similar deal for UK's remote colonial possessions.

      Consider the USSR (often erroneously referred to as "Russia" back in the day) and how they put their Baikonur Cosmodrome in the non-Russian republic of what is now Kazakhstan (nuclear-tipped missiles too).

      When they actually were Russia again, that country had assets spread out in what were now other sovereign nations.

      Is the UK going to mount a war every time a place declares that it is now not a British colonial possession?
      How much did the Falklands/Malvinas escapade suck out of the exchequer?
      ...not to mention the bodies that came home in a box.

      The thing about empires is that, in time, they all fall apart.

      ...and, as AC #469639 has noted, when you include Scotland, you're now talking about Great Britain, not UK.

      -- OriginalOwner_ [soylentnews.org]

      • (Score: 0) by Anonymous Coward on Wednesday February 22 2017, @01:34PM

        by Anonymous Coward on Wednesday February 22 2017, @01:34PM (#470143)

        ...and, as AC #469639 has noted, when you include Scotland, you're now talking about Great Britain, not UK.

        To leave your partner, you don't need to have been part of that partner.

  • (Score: 5, Insightful) by VLM on Tuesday February 21 2017, @12:59PM

    by VLM (445) on Tuesday February 21 2017, @12:59PM (#469661)

    An interesting third option is the Russians launch stuff (like their ISS) into 51.6 degree orbits so for maximal efficiency you should launch around lower 50s which conveniently is more or less Scotland/England. You can reach any inclination from any spot on the earth if you're willing to burn extra propellant, which is how you launch a shuttle in FL and it ends up in a 51.6 degree inclination orbit, but its probably easier to just launch from a 51.6 degree latitude, like the Russians do, more or less.

    The situation is actually weirder in that the Russians don't launch at 51 degrees but considerably further south however they have to launch into 51 degrees and waste some propellant in order to avoid overflying China. The Chinese and Russians have been butthurt about each other on and off for centuries and essentially launching an ICBM over China is just going to piss them off. This means that a launcher in jolly ole england or wtf actually has a competitive advantage over the Russians that the Russians initially forced us to accept for the ISS.

    Also people get really confused and low earth orbits don't see the whole hemisphere like a high geosync orbit only a range of many hundreds of miles, so WRT to space telescopes and earth observation science BS launching into a 0 degree orbit is actually not very scientifically useful unless you're solely interested in earth science of the topics, so a "ridiculous" 51 degree orbit is actually scientifically valuable aside from being a political pawn and a waste of good propellant from a purely engineering standpoint. Maybe an outright polar orbit would have been better, but when ISS was planned, polar orbits look scarily like an ICBM launch, so they happened but were nervewracking.

    Once everyone trusts spacex to deposit their first stage in a safe location, like back at the base, or at least hit some lake or empty ocean if it can't make it back, then the overfly countries might not be so worried about overflights. I've never considered that spacex's "secret sauce" might be mixing launches from the uk WITH the famous ability to return booster to launch site resulting in a possibly huge competitive advantage for ISS resupply missions. That's kinda cool.

    Another topic no one has discussed is the USA is famous for being all butthurt and PITA about exporting top tier military technology and one way to avoid all that BS is just to launch internally. So if some UK company wants to launch a top secret spy satellite for the UK military, well, one way to avoid stupid export laws is to launch locally.

    • (Score: 2) by subs on Tuesday February 21 2017, @07:35PM

      by subs (4485) on Tuesday February 21 2017, @07:35PM (#469837)

      like their ISS

      Yes, of course, but you gotta remember, that non-equatorial AND non-polar orbits have relatively little use in the commercial space, except for a few very specialty applications. "Mir" was placed there simply because it was convenient for them and Mir was hardly a commercial venture.

      You can reach any inclination from any spot on the earth if you're willing to burn extra propellant

      Yeah, and that last part is the problem. IF you have the propellant, then sure. But it also severely limits your launch capability and can increase vehicle cost and complexity.

      in that the Russians don't launch at 51 degrees but considerably further south however they have to launch into 51 degrees and waste some propellant in order to avoid overflying China

      Yeah, it was one of the design constraints for the ISS orbital parameters, in that 51.6 was pretty much the southernmost LEO that the Russians could hit. The Americans would have preferred the ISS to be a lot lower. The problem for Scotland is that there's pretty much nothing you can do to avoid Norway & Sweden this way, so the lowest you could hit would be around 70, which is just silly at this point. That's getting so impractical that you'd have to carry a whole extra stage just to do the inclination correction at an extremely high apogee bi-elliptic transfer. That means designing an extra upper stage designed for deep space maneuvers. I mean we're talking easily an extra 2-3 km/s of delta-v and that's pretty extreme.

      one way to avoid stupid export laws is to launch locally

      Yeah, which is why I suspect the primary use of this launch site would be military.

      • (Score: 2) by VLM on Tuesday February 21 2017, @08:42PM

        by VLM (445) on Tuesday February 21 2017, @08:42PM (#469872)

        The problem for Scotland is that there's pretty much nothing you can do to avoid Norway & Sweden this way

        LOL Sweden, they don't do self defense of their borders, just launch over them anyway. Somewhat more politely, they have a lot of rural land and no nukes to shoot back at the UK in some kind of "MAD mistake" so just go for it.

        Eventually having a spacex first stage fly overhead will be about as worrisome as having a Boeing 777 fly overhead. Technically it could fall out of the sky and land on your head, but they never do that, and when it gets to that point the Swedes really have nothing to complain about.

        I wonder if there is more to the secret sauce, with extremely high precision GPS I wonder if you could plot a course and guarantee to the Swedes that no matter what happens if the flight goes dumb ballistic at any millisecond, its guaranteed to only hit farmland or uninhabited areas. I believe that might be possible with very large controller storage and relying on maneuvering jets and playing games with coming in side first (high drag) or pointy end first (low drag). I believe it might be possible to guarantee flightplan and abort control system such that you'd need more than 3 separate system failures before anything landed anywhere but ocean or uninhabited land. At that point I think they would be chill unless you're lofting nuclear reactors or whatever.

        • (Score: 2) by subs on Wednesday February 22 2017, @10:54AM

          by subs (4485) on Wednesday February 22 2017, @10:54AM (#470096)

          Sweden, they don't do self defense of their borders, just launch over them anyway

          Both the UK and Sweden are members of several tightly knit organizations, which do take this kind of stuff pretty seriously.

          Eventually having a spacex first stage fly overhead will be about as worrisome as having a Boeing 777 fly overhead

          Commercial aircraft don't have a more than 1% of doing this: https://youtu.be/WTVkhp0MxMc?t=2m26s [youtu.be]

          I wonder if there is more to the secret sauce, with extremely high precision GPS I wonder if you could plot a course and guarantee to the Swedes that no matter what happens if the flight goes dumb ballistic at any millisecond, its guaranteed to only hit farmland or uninhabited areas

          No, there isn't. There's no straight ~1000km-long path eastward that guarantees you can't hit inhabited areas.

          • (Score: 2) by VLM on Wednesday February 22 2017, @02:59PM

            by VLM (445) on Wednesday February 22 2017, @02:59PM (#470195)

            There's no straight ~1000km-long path eastward that guarantees you can't hit inhabited areas.

            Well yeah, that's exactly what I mean by an actively navigated extremely high resolution, so a 1 m/s correction at launch means you miss Stockholm rather than going directly overhead, combined with a zillion other corrections... lets say a 5% fuel cost is acceptable, or more likely possible... Sort of a think outside the box solution.

            • (Score: 2) by subs on Wednesday February 22 2017, @10:54PM

              by subs (4485) on Wednesday February 22 2017, @10:54PM (#470486)

              Sort of a think outside the box solution

              See linked video of SpaceX RUD mid-flight. After this, all your solutions go out the window and the debris simply follows a ballistic trajectory with chaotic atmospheric perturbations and a fairly wide dispersion pattern.

  • (Score: 0) by Anonymous Coward on Tuesday February 21 2017, @04:10PM

    by Anonymous Coward on Tuesday February 21 2017, @04:10PM (#469738)

    Launches from Scotland to the equator are difficult, since launching vehicles could overfly Denmark, Sweden, Poland or the Baltic states...

    So launch from England instead.

  • (Score: 2) by fritsd on Tuesday February 21 2017, @07:17PM

    by fritsd (4586) on Tuesday February 21 2017, @07:17PM (#469828) Journal

    They could launch from British Guyana.

    Advantages:
    - ex-British colony
    - speak English (probably) (kind of ish)
    - around 9° North of the equator
    - probably a deep sea harbour nearby to transport the rocket
    - approx 600 km from the massive ESA spaceport in Kourou [wikipedia.org] in French Guyana, which is even closer to the equator and was built in 1964 and already has all the permits and equipment and experience and good rocket launching facilities in fact never mind... Brexit I know I know..