SpaceShipTwo Design and Pics Released

An anonymous reader writes "Designs and photos for Scaled Composites and Virgin Galactic's new suborbital spacecraft, SpaceShipTwo, and its carrier aircraft, WhiteKnightTwo, have been released." Lots of specs and numbers if you're interested in that sort of thing although nothing hugely detailed.

Comments

Re:Nothing to see here

[FlatEric521]

Really, the primary thing this project has going for it is that it is not funded by a government. It might be boring and not state of the art now, but further development of private space flight should lead to some truly interesting technology and vehicles.

Re:Nothing to see here

[geekoid]

Cutting edge technology is only one place to contribute to space flight. Production improvements can also aid space flight, and producing more of the material needed to do space flight may improve manufacturing techniques.

Then making 'space flight' available to more of the public helps create more awareness.

Re:Nothing to see here

[Rei]

I should add that I'm only criticizing SS1/SS2. I have nothing against WK1 or WK2; they're quite nice carrier aircraft. But SS1 and SS2 are completely meaningless. If you want small companies doing meaningful rocketry, check out SpaceX. Their Falcon 9, a rocket whose heavy version will carry as much payload as NASA's beleagured (and possibly dead in the water) Ares, including its own spacecraft that can dock with the ISS, will be launching this June. The typical launch cost of payloads in the west is $10k/kg. In Russia, China, and India, $7k/kg is the standard. Sometimes you can get discounts down toi as low as $4-5k/kg. The Falcon 9 is $2-3k/kg. And looking over its construction, design, stats, etc, these numbers definitely appear credible.

Cheer for the rocketry not matters, not the irrelevant joyrides.

Parallels and Perspective

[TheLazySci-FiAuthor]

For a bit of perspective I wanted to see what progress looked like back in the early days of aviation.

http://www.aerospaceweb.org/question/history/top10/wright-flyer.jpg Here is the wrights' "space ship one"

http://www.dkimages.com/discover/previews/786/506847.JPG Here is what the aircraft started looking like 4 years after the Wright's first flight.

It took 30 years for Jet technology to appear, I wonder if it will be a similar amount of time before we get private orbital cabability.

Re:Parallels and Perspective

[Rei]

First off, almost all orbital launches are private. Most are completely private except for government funding in the development stage and government launch contracts; the launches are run for-profit by companies like Boeing and Lockheed. Even for ones run by NASA, like the shuttle, the craft itself was largely built by private companies. If you want to rule out "large" private companies, there's SeaLaunch, Orbital Sciences, etc, who've developed and run for-profit their own rockets. And if you want rockets developed largely from scratch, look no further than SpaceX and their Falcon rocket (with soon upcoming Dragon spacecraft).

Why cheer for irrelevance? Cheer for what actually matters.

By the way -- I'm not sure the analogy with early aircraft is the one you're going for. Just ignoring how little capital it took to build an airplane versus what it takes to make an orbital spacecraft, you should realize that early airplanes suffered major crashes at very regular intervals. The pilots typically survived because the performance of said aircraft was so low. The first cross-country flight took weeks and involved dozens of crashes. For the first around-the-world race, the US strategically placed replacement parts and even entire replacement airplanes for its pilots to use.

Even if that was an analogy you wanted to use, you should be comparing early aircraft with early rockets (V2, Redstone, etc), not with SS1 and their "repeat what's done decades ago in a way that we know damn well won't scale to anything". SS1 isn't developing new technology or pushing the envelope; they're making craft that don't advance anything except people's ability to have a joyride.

Re:Nothing to see here

[gstoddart]

It might be boring and not state of the art now, but further development of private space flight should lead to some truly interesting technology and vehicles.

But, really, if private space travel is to become commonplace, what we want is boring and un-sexy technology -- not exciting and cutting edge.

What we need is the equivalent of a Buick station wagon with wood-grain trim. Boring as hell, but a reliable vehicle which focuses on doing the task instead of pushing the envelope. Once you have that, then this stuff can start to become routine based on available technology.

Cheers

Re:Nothing to see here

[edwardpickman]

Say the 29' Mercedes was far more impressive technically than what Ford was putting out but how many straight 8 engines do you see used in cars today? The most cutting edge isn't always the most practical. Do we wait for warp technology for space flight or use chemical rockets to get the ball rolling? The Space Ship 2 is the Model T of space flight. That's not an insult it's a major compliment. The Model T was one of the most successful cars in history for good reason. This craft puts space flight not into the hands of the average person but potentially into the hands of large numbers of people. Henry Ford would give it a big thumbs up and we should all view it as the stepping stone it is.

Have to say

[MacarooMac]

I'm surprised at the amount of scepticism over this project, esp on /. Let's face it, commercial designs such as SS2 are the only way any of us down here will be getting 'up there' in our lifetime.

FYI, from el Wiki: "More than 65,000 would-be space tourists have applied for the first batch of 100 tickets to be available. The price will initially be US$200,000. However, after the first 100 tickets are sold the price would be dropped to around $100,000. Then deposits after the first year will drop to around $20,000. The duration of the flight will be approximately 2.5 hours, and weekly launches are planned.

In December 2007 Virgin Galactic had 200 paid-up applicants on its books for the early flights, and 95% were passing the necessary 6-8 g centrifuge tests"

Re:Nothing to see here

[khallow]

Production improvements of low ISP vehicles contribute absolutely nothing to high ISP vehicles. Production improvements of vehicles with minimal to no TPS contribute nothing to the serious TPS challenges of actual orbital vehicles. Virtually nothing about SS1 applies to the serious challenges involved in spaceflight. Here's my take. You are very wrong. Scaled Composites is carefully putting together that vehicle with the high ISP engine, the thermal protection system, and all those other challenges. It just hasn't starting designing it yet. There's a lot more to a vehicle than the vehicle itself. You need experienced designers, ground crew, and pilots. You need testing experience and infrastructure (note, for example, that SpaceShipTwo has its own flight simulator already). You need to gain experience in jumping the substantial bureaucratic hurdles for a manned space vehicle. You need to understand what the problems and challenges are before you design much less put the vehicle together. And you need to do all that without going bankrupt. What you are seeing is IMHO how a master would approach this problem. The key is incremental design. You don't make the orbital vehicle all at once with all those unknown pieces snapped together. You build up to it with progressively more sophisticated launch vehicles and extensive testing at each step. Unlike the other "alt.space" players like SpaceX, Blue Horizon, SpaceDev, etc, Scaled Composites probably turned a small profit with SpaceShipOne, its first space vehicle. And I bet it's turning a profit with SpaceShipTwo as well. If SpaceShipTwo doesn't get the hoped-for business, then Scaled Composites can walk away from it all. The thing that gets ignored is that Scaled Composites has economically one of the soundest projects in the space business.

A LOT to see here

[Somegeek]

This is not about advancing the state of the art in rocket design, no one ever claimed that it was.
They are learning how to build an infrastructure that could take paying customers to orbit.

They are gaining experience carrying passengers and a spaceship up to the edge of space.
They are gaining experience dealing with novice 'astronauts' and what it takes to prepare them and what they should expect from them in a weightless environment.
They are gaining experience designing and building and flying carrier aircraft.
I would imagine that the next generation will use a different rocket design, go significantly faster, and start using heat shielding, with yet a bigger carrier aircraft.
Once they have that in place, the next generation can upgrade the 'spaceship' to something with serious rockets that have the capability of reaching orbital speeds.

Or should they have gone for orbit first and hope everything else works at the same time?

Re:Nothing to see here

[hador_nyc]

Virgin is focusing on a specific limited mission that no one has done in a way as to open it for a large number of people. If Virgin can make money giving people these cannonball shots, then others, if not Virgin itself, will spend the money to research and develop a craft that can do orbital or even lunar missions. There doesn't need to be a linear progression from SS2 to an orbit capable craft. My analogy was fine because I don't think the Buick should be on the racetrack. They are vehicles designed for different tasks; tuned to their specific environments; just as orbital and sub-orbital missions are different. Again, all Virgin needs to do is to make money doing this. Then people will believe that a NGO can do this, and NGO orbital fights will come with a craft properly tuned and designed for that more difficult challenge. When that happens, you will see the new technology.

As to my understanding of rocket science, well, for starters, maybe you should learn manners before you return to the discussion. You're not going to convince people to agree with your opinion if you insult them first. You only come across as an idiot when you do it; regardless of how smart you may be. You also might try opening your mind to ideas that don't fit with your own narrow view of the world.

Re:Nothing to see here

[Plekto]

***This was a very good point, IMO***
**quote**
As I mentioned before, I was in error about how much delta v it takes, including gravity losses, to get in orbit, 9500 m/s instead of 11km/s. So about a quarter of the necessary delta v was provided by the motor and a further 300 or so m/s by the plane. Given that SpaceShipTwo goes a bit higher and has more downrange than SpaceShipOne, it probably has a little more delta v. So you're too low by at least a factor of 2 in your delta v estimate. And there's still higher ISP fuels. For example, they can use liquid oxygen in their hybrid to boost ISP. And higher mass ratios will obviously be needed. But I see no reason orbital delta v can't be reached.
****
Twice the thrust is probably attainable with more engines(check) and a little more fuel that has a higher energy output(I hate acronyms - a pet peeve of mine). The ship itself that launches them can also without a doubt be made to go faster, especially not IF, but WHEN we get scramjets and similar technologies working. 4000m/sec from the module and 1-2000m/sec from the booster/plane/etc is suddenly not so far off the mark.

IME, when you start talking about engineering problems and the difference between making it happen and the prototypes is a matter of 2-3x the test results, it's a matter of figuring it out more than being in the realm of "not possible". I don't think Scaled Composites second design can get into orbit, but it's a good step in the right direction, make no mistake about it.

I have to give them props for trying at least. Their goal is to get into space and not just give joy-rides, after all.