More SpaceShipTwo Details 212
Anonymous Coward from Manitoba writes "BBC news is reporting more details about Burt Rutan's proposed SpaceShipTwo. Apparently the new flyer will include five to eight passenger seats and have the 'same diameter crew cabin as a Gulfstream V business jet'. It will fly much higher than SpaceShip One - up to '135-140 km' that will permit an additional 90 seconds of microgravity. This will be important, since 'we want this roller coaster-type bar that you fold out of the way and you can float around'. They are also planning to 'have the option of landing in a different place from where they took off'. I can't wait until we can ride SpaceShipThree across the Atlantic in 20 minutes!"
an extra 90 seconds (Score:5, Funny)
Re:an extra 90 seconds (Score:5, Funny)
Re:an extra 90 seconds (Score:4, Funny)
Re:an extra 90 seconds (Score:5, Funny)
Re:an extra 90 seconds (Score:3, Funny)
'too quick' is a common complaint, but what does one do about 'too long'?
Re:an extra 90 seconds (Score:2)
Quick is *NOT* on my list of objectives
Cool. Very cool. (Score:2, Insightful)
orbital requires heat shields (Score:2)
It seems counterintuitive (Score:4, Interesting)
Re:It seems counterintuitive (Score:5, Insightful)
Re:It seems counterintuitive (Score:2, Informative)
If you're talking about a tail-first reentry that relies on rocket thrust slowing down the craft to avoid overheating, I wouldn't think so... at least not with a hybrid engine. Maybe with cryogenic fuel.
Does the shuttlecock feather design work at high speeds? When it comes down from orbit and hits the atmosphere it'll be going like 17,000 mph. I
Re:It seems counterintuitive (Score:5, Informative)
I'd like to see Rutan go orbital, but anyone who thinks it will be the small, light, inexpensive (for a space ship) craft it is today is fooling themselves.
Re:It seems counterintuitive (Score:3, Interesting)
Re-entry is the prob
Re:It seems counterintuitive (Score:3, Interesting)
Ascent has problems of its own, but heat is never really a problem, they tend to worry about the pressure exerted by the air as they pass Mach 1. This is almost always (Possibly just always, but I don't know the specifics for every rocket in exi
Re:It seems counterintuitive (Score:2)
Re:It seems counterintuitive (Score:3, Informative)
Re:It seems counterintuitive (Score:5, Informative)
A SatV weighs 3,038,500 kg, and can launch 118,000 kg to orbit. Lunar weight/payload ratios are even worse, at 47,000 kg to the moon, its about 1.5%.
I thought some of that might be for outdated technology (and some of it is, i'm sure, we could save structural weight now, not sure how much fuel requirements could change though) so I compared it against the Delta IV Heavy:
733,400 kg launcher.
25,800 kg payload to LEO.
3.5%
Don't whine about units, 'rocket science' generally uses metric, so thats what I found units in. I'm too lazy to convert them, use google calc and do it yourself.
Re:It seems counterintuitive (Score:2, Insightful)
Since you are in space (Score:5, Funny)
Will they be able to hear you scream???
Bravo! (Score:4, Interesting)
I'm still waiting for it to grow and to become capable of reaching 500 km in altitude. If it can reach the altitude with a small payload launching capability, then a on-the-cheap space experiment becomes possible in future. I think that could change the way we think about space research.
Re:Bravo! (Score:3, Interesting)
To put something in orbit you need speed. Lots of it. A helluvalot faster than what Rutan's SpaceShipOne (and Two) can ever get to without disintegrating, which I believe isn't on their agenda. They don't have to surpass NASA in every domain after all.
You may want to whip your favourite search engine, or even wikipedia, for something called "liberation speed" and stuff relating to re-entry speed and
Re:Bravo! (Score:2)
I did, there is nothing usable whatsoever with this search.
Try "Escape Velocity" (Score:2)
Re:Bravo! (Score:2, Interesting)
Re:Bravo! (Score:2)
For years we've been reading about the idea of suborbital airlines that could take you anywhere in the world in 45 minutes or less. If we have to wait for Boeing or Lockheed to wait for the airlines to wait for their marketing experts to cost justify it, it won't happen in our lifetimes. But someone like Rutan with vision, money, and technical skills could bring us this type of tech
Too rich for my taste (Score:5, Funny)
Re:Too rich for my taste (Score:2)
And with a bit of luck by the time SpaceShipOneThousandTwentyFour leaves the orbital shipyard we will be able to afford a vacation in another solar system.
Can you afford $2,950.00 + Tax? (Score:3, Informative)
John Carmack has taken the ride [armadilloaerospace.com] and seems to have liked it a lot.
Re:Can you afford $2,950.00 + Tax? (Score:3, Informative)
This is really cool, (Score:3, Insightful)
I think they need to find a better way of launching those things into space. Because the amount of fuel they require now is unbelievable and I don't believe the oil price will drop within 10 years.
Re:This is really cool, (Score:2, Informative)
Rocket fuel is usually liquid oxygen in one tank, and liquid hydrogen. There are several other fuels used, one of which is derived from kerosene and is not used often anymore.
Spaceshipone uses "hydroxy-terminated polybutadiene (HTPB), a common ingredient in tire rubber" [space.com] as the fuel, and nitrous oxide (laughing gas) as the oxidizing agent.
Because they are common and not explosive in and of themselves, they are much easier to transport and use.
Oh, and they don't use much oil,
Re:This is really cool, (Score:3, Informative)
The electrolyse is very inefficient, you have to put in more energy to create it then the hydrogen will provide. To create electricity there are multiple sources:
The first option is not used a lot at this time because is does not create enough energy to be profitable. Nuclear energy may be the real answer for the near future but as we all know there is a
Re:This is really cool, (Score:2)
Reforming fossil fuel also puts in more energy/mole than the hydrogen will give back. The energy you could've gotten by burning the fossil fuel goes in, and the energy you can get from burning just the hydrogen comes out. Also subtract process energy and minor inefficiencies. Unless you also burn the carbon, you are throwing a lot of the original energy away. (Remember, burning carbon is evil.)
Please think twice the next time you want to write "create energy". There's a conservatio
Re:This is really cool, (Score:4, Interesting)
Re:This is really cool, (Score:3, Informative)
If you use a Kerosene / LOX rocket to put things into orbit, when sitting on the pad, your rocket will be about 93% fuel, 4% rocket and 3% payload. That fuel will be about 7 parts oxygen to one part kerosene. LOX is one of the cheapest industrial chemicals available, at something like a penny per kilogram. If you can burn Jet-A fuel in your rocket, it runs something like $US0.40 / kilogram.
So, for each kilogram of payload for
Re:This is really cool, (Score:2)
it's called nuclear fission. see here for details: http://nuclearspace.com/a_liberty_ship.htm [nuclearspace.com]
And no, this does not involve blowing up atomic bombs beneath the ship.
Re:This is really cool, (Score:2)
And no, I'm not one of those people who freak out when they hear the word "nucular", in case you were wondering.
Re:This is really cool, (Score:2)
Translation please? (Score:5, Funny)
Floating in space (Ansari X-Prize)
The X-prize vision is about to be realised
"Does that mean that some guy and his girl might want to take the whole ship? OK!"
Is that a euphemism for zero gravity sex? It'll be one of the few times when being quick is actually good! Also, with presumably multi-year waiting lists, it'll take performance anxiety to new high.
Re:Translation please? (Score:5, Informative)
Re:Translation please? (Score:2)
Shaped and deflected explosions (Score:3, Interesting)
Re:Shaped and deflected explosions (Score:2, Informative)
Not at all. (Score:4, Interesting)
TNT has an energy density of around 4.6 MJ/kg, a 1:8 H2/O2 mixture achieves 13 MJ/kg. Hydrogen has little density however (even the liquid), so volume is a major problem there.
Much higher energy densities require more exotic techniques, with Uranium (235) fission at 90 TJ/kg. This is 6 magnitues beyond regular fuels.
Antimatter/matter annihilation is the most energy dense fuel possible so far, and would be 1000 times denser in energy compared to U235.
Re:Not at all. (Score:5, Informative)
Well not exactly surprising. The fission of one U235 atom liberates approx 200 MeV which corresponds to roughly the mass of 1/5'th of a proton so the anihilation of one U235 Atom to pure energy would liberate roughly 1000 times more energy than fission..
Yours Yazeran
Plan: to go to Mars one day with a hammer.
Re:Shaped and deflected explosions (Score:3, Informative)
Re:Shaped and deflected explosions (Score:2)
One method which hasn't been tried yet but which is theoretically possible is to use the law of Conservation of Momentum to affect a change in velocity for mass M1 by ejecting a mass M2 from the rear of the spaceship at hig
Humm... (Score:3, Interesting)
A half hour flight I could see...
This??? A classic example of early adopters getting royally screwed?
Re:Humm... (Score:2, Insightful)
Kierthos
Re:Humm... (Score:2)
Has she really been that evil or mean to lots of people?
values (Score:2)
Home built? (Score:2, Insightful)
Eh, I wouldn't exactly call it homebuilt.
In the year 2028... (Score:4, Informative)
Re:In the year 2028... (Score:2)
Depends on the age I would think.
I'm not a psychologist, but I work with two, and they seem to think that up to about 18 months, the baby would be quite comfortable floating. After all, it was their natural enviroment for quite some time. (cognitive reasoning age/issues aside)
They may very well be more distressed when the microgravity experience is over than when it starts.
Re:In the year 2028... (Score:2)
This would seem to require a sense of which way is down, so maybe they would be *less* upset than older passengers when there isn't any "down".
Re:In the year 2028... (Score:3, Interesting)
Hey, if it is over in 20 minutes I wouldn't mind! Long flights with annoying people are so bad because you cannot get away from them for long periods of time.
During long flights I have pondered the possibility of transporting people in stacked coffin-like caskets (i.e. lying down). Yes, it would be awkward to get in and out, but climbing over people is awkward too and at least these things you can close o
Yeah... (Score:5, Insightful)
Re:Yeah... (Score:2, Interesting)
"...and imagine still wasting one hour travelling to the air/spaceport"
Perhaps. Spaceport commute time would completely depend on your proximity and capability of transit transport infrastructure. By the same argument, commuting to the office everyday takes as much time.
"three ours in check-in and security lanes"
Three hours is a tad high, IMHO, except in rare situations. Check-in time, even for international travel usually takes an hour, in my
However... (Score:3, Interesting)
wasting one hour travelling to the air/spaceport, three [h]ours in check-in and security lanes, half an hour on the other end to get your luggage back, and yet one hour travelling off the port
The ground travel is an unavoidable item of overhead (unless you live at the [space,air]port). The security lines for international flights (including customs) are also unavoidable. Travel light and you won't have to worry about the baggage claim; check-in is usually faster when you are not checking luggage.
An
Re:However... (Score:2)
A bit tricky ... (Score:2)
make absolutely sure what you're about to do will go in the bag and nowhere else
Re:However... (Score:2)
Re:Yeah... (Score:2)
Re:Yeah... (Score:2)
I don't know where that airport is. Last time I flew, I obediently arrived 90 minutes before boarding and spent 80 minutes in the departure lounge. I think it's just a scam to sell more cheesy paperbacks and oversized sweet rolls.
Impact on the ozone layer? (Score:5, Interesting)
If we will come to see daily flights of maybe hundreds of planes it might have a significant impact on the ozone layer and thus our health. It is therefore important to get an estimate of the impact on the ozone layer so that cleaner fuels and other measures can be taken to prevent this.
Here is a bit of background info on the ozone layer and the impact of the space shuttle and high flying aircraft and rockets on it:
http://www.aero.org/publications/crosslink/summ
http://www.faqs.org/faqs/ozone-depletion/intro/
Re:Impact on the ozone layer? (Score:3, Insightful)
Then by that logic. Stop breathing. No, seriously. You are poluting this world with the greenhouse gas Carbon Dioxide. So stop breathing and stop poluting.
Re:Impact on the ozone layer? (Score:2)
Re:Impact on the ozone layer? (Score:2)
Hydrazine rockets are pretty nasty things as well.
On a larger scale, however, they are just a drop in the bucket, and we shouldn't just stop using them before we have good alternatives.
Energia was capable of lifting 150000kg (Buran + 30000kg payload) to orbit, and made use of all chemical boosters. It can be done, it just needs to be improved. Russia has never liked solid rockets, so they have some of the
20 Minutes? (Score:4, Funny)
Long Haul Flights (Score:2)
Re:Long Haul Flights (Score:2)
But (Score:2, Funny)
Cheaper Alternative (Score:4, Interesting)
Re:Cheaper Alternative (Score:2)
The few initial seconds of freefall before reaching terminal velocity in true skydiving are more like it, but we are talking seconds, not minutes.
On the other hand freefall is reputedly not particularly pleasant to newcomers.
Re:Cheaper Alternative (Score:2)
Anyways, X-Prize head Peter Diamandis's new company Zero G [nogravity.com] is now offering a weightless flight with 15 parabolas for $3000 - $4000 a ticket [nogravity.com].
SpaceShipX doesnt sound very catchy (Score:3, Funny)
Investment money (Score:2)
They get a shitload of press, both here and on TV. I figure they must be trying to build recognition. And from what I see, they're doing a kick-ass job at it.
Take part in building fullsize SpaceShipOne mockup (Score:3, Interesting)
STUDENTS AND YOUNG PROFESSIONALS WANTED FOR THE CHANCE OF A LIFETIME
The X PRIZE Foundation is issuing out a call to arms for those interested in getting their hands dirty to further the cause of private spaceflight. In a tribute to the majesty of SpaceShipOne, the X PRIZE Foundation will be creating several full-size mockups of the historic private spacecraft to be used as early as this summer for outreach and education.
We are offering 10 students and young professionals the chance of a lifetime to come to the World's First Inland Spaceport at Mojave, California, to build multiple full-scale mockups of the SpaceShipOne.
This amazing opportunity is only open mainly for students and young professionals as an educational project. We are also looking for a project lead with experience in composites and/or fiberglass lay-up to oversee the project to completion.
Working at Scaled Composites' facilities, this team will dive in and get their hands dirty as they learn the spaceship building business.
Using the original tooling and methods employed in fabricating the actual spaceship, this will be an opportunity unlike any other. The project will take off in mid-January 2005 and continue throughout the spring semester. This highly competitive program could count for academic credit and will provide students and young professionals with the outstanding experience of working with composites, fiberglass lay-up and other processes associated with the building of a spaceship.
"This is an extraordinary educational opportunity to actually build a copy of SpaceShipOne using Burt Rutan's original tooling," said Dr. Peter H. Diamandis, CEO and Chairman of the X PRIZE Foundation. "The folks who get chosen for this project will work within the Scaled Composites facility and have the opportunity of a lifetime. In fact, I hope to get out to Mojave to participate when I can as well."
Project timeline: Mid January - Mid May
Location: Mojave, CA
Compensation: N/A
Other: Physical work required - must be able to lift more than 40lbs
Security: Background check will be performed
Transportation: You must provide your own transportation
Individuals who wish to be a part of this project should send a resume and cover letter describing why you would like to participate to:
Brooke Owens, Director of Team Relations & Special Projects at brooke@xprize.org. Deadline for application is January 10, 2005, however, we will fill available slots on a rolling basis so please apply as soon as possible. Interested parties should be advised that this opportunity is unpaid, but rich in opportunity.
Wired article on Richard Branson (Score:3, Informative)
Some interesting quotes:
But look at the upside. The total price tag [of Virgin Galactic] is half the cost of a single Airbus A340-600 - and Virgin Atlantic ordered 26 of those last summer. In return, Branson gets bragging rights to one of the cooler breakthroughs of the early 21st century, with rocket-powered marketing opportunities that could fuel excitement - and sales - in his entire 200-company holding group.
SpaceShipOne's "shuttlecock" design adds an extra measure of safety. When the craft reaches its airless apogee, it hinges (feathers, in pilotspeak) into a broad V shape that automatically brakes the descent. "It lets you take an averagely competent pilot - like me - and throw anything you can think of at him, and still have everyone aboard get away safely," Tai explains. "The space shuttle does that with all sorts of fantastically complex systems. Burt's brilliance is that his ship uses smart design and the laws of physics. Which are, in fact, the only ways you can be truly drop-dead safe."
Why stop there? "I hope we'll get to the moon in my lifetime. The first baby born there - what country will it be a citizen of? Maybe we can put a Virgin bank in space, or maybe a Virgin tax haven. We could pay for all our people to go up there just by depositing their money." Now, that's adventure capitalism!
The simple fact is that going into space gives Branson a chance to do what a lot of massively successful guys wish they could do: grab the wheel of history and tug. Opening the final frontier to private citizens will ensure Branson's place in the human saga. And if that means fleets of Virgin spaceships soaring through the inky void, serving sip-packs of Virgin Cola on the way to the latest Virgin Clubhouse, so be it. "Space is virgin territory," Branson says, trying out a prospective marketing line and shooting another grin. "Is that 21st-century enough for you?"
Re:just how many.. (Score:2)
quite friggin many.
Re:just how many.. (Score:2)
ah.. but a jumbo gets over in a day.
cruiseliner is for having fun in this day and age. nobody uses them for just transporting themselfs unless they fear flying for one reason or another.
(and "An advanced one-class layout would accommoda
Re:just how many.. (Score:2)
But it will use disproportionately more fuel to do so.
Re:just how many.. (Score:5, Informative)
the point is that a single jumbo actually WOULD transfer more people over the atlantic in a weeks time perioid than a cruiseliner ever would be able to.
But it will use disproportionately more fuel to do so.
I think you're wrong.
The Queen Mary 2, which is a modern and fuel-efficient cruise ship, moves 50 feet per gallon, which is about 0.01 miles per gallon. At 2,712 persons (which includes 921 crew, by the way), that's 25.8 person-miles per gallon. Source data [cunard.com].
A Boeing 747-400, which is a modern and fuel-efficient jumbo jet, moves 666 feet per gallon, which is about 0.13 miles per gallon. At 524 persons (not including crew), that's 66.3 person-miles per gallon. Source data [boeing.com].
That makes the jumbo-jet nearly three times more fuel-efficient than the cruise ship. I realize that they don't use the same types of fuel so a real efficiency comparison might require some additional correction factors, but I bet the jumbo jet still comes out way ahead. Especially if you didn't give the cruise ship the unfair advantage of counting the crew in the calculations.
OK, smart guy... (Score:5, Funny)
Re:just how many.. (Score:3, Informative)
The Airbus A380, on the other hand, is of a more recent design, and its target mark [forbes.com] is 81 person-miles per gallon.
Re:just how many.. (Score:3, Informative)
Re:just how many.. (Score:2)
Most of the energy you expend lifting the plane to its cruising altitude is stored in the plane. When you descend you get the energy back, so except for friction, there's no extra energy used to go up and down.
Re:just how many.. (Score:2)
Re:just how many.. (Score:2, Insightful)
Can you imagine SS3 taking people from Mojave to Japan in 2-3 hours? Or what about the US govt/DoD using it to deliver specalized troops anywhere in the world withing 4-5 hours. Hostage situation in Africa? SeAL's on the ground from the US to the target in 3 hours. Earthquake in Iran? Specalized rescue teams on site in hours and not days. It makes sense to send people around the globe just like you send ICBM's.
Imagine a first class
Re:just how many.. (Score:2)
I wonder if the additional speed will really be worth the additional cost. If I need to be somewhere else for business purposes, the only important parts of my presence can arrive in milliseconds via telephone, or even television if someone can think of a convincing reason to see me.
To me, travel itself is painful and boring, and I don't see much difference between being subjected to transportation for 12 hours or three. Let me know when I can step into
Re:just how many.. (Score:2)
I have a job where I provide IT services in my own building and in another one 800 miles away. Invariably, when I physically go there, I find out about things and get stuff done that would have taken orders of magnitude more effort, and/or never gotten done at all, by phone or even videoconference.
Like it or not, we are great apes, and our capabilities are limited.
Re:just how many.. (Score:2)
I provide IT services too, and 99 times out of a hundred what I do works as well from home or my desk as it would onsite. Obviously we can't install equipment ov
Re:just how many.. (Score:5, Informative)
Now it's probable that had BA etc had to shoulder the full cost of designing and building the thing, they'd never have made anything.....
In the late eighties there was a recession in the UK and this reduced the number of regular passengers and Concorde started becoming less viable. The combination of 9-11, the French Concorde explosion and general world angst finally killed it.
But in the Eighties it made BA and Air France lots of cash.
Troc.
Re:just how many.. (Score:2)
else they would have designed another concorde..
Re:just how many.. (Score:2)
Re:just how many.. (Score:2)
Re:just how many.. (Score:3, Informative)
Re:just how many.. (Score:2)
Well, at least that statement seems false. I don't know what Scaled Composites uses for fuel, but it doesn't sound like that most environmentally friendly propellant [wikipedia.org] I know of.
Re:Whatever happened to... (Score:4, Informative)
Of course, there is always the chance that I missed it.
Re:I want to be the first (Score:2)