Possible Space Shuttle Replacements

[VaBeachGuy 12]

Possible designs for next shuttle.

 

 

~From ABCnews.com

 

Feb. 10 — When the space shuttle first launched on April 21, 1981, it opened a whole new era in space exploration for NASA. For the first time, the agency — and the world — had a space vehicle that could be recovered and used repeatedly.

 

Now, the tragic loss of Columbia may speed up the hunt for the next-generation shuttle — a task the aerospace industry has pursued almost since the current shuttle came into existence.

"The overall general consensus is that NASA needs to move forward in a new [launch] system," said Dennis Smith, a program manager involved with looking at next generation space vehicles at NASA's Marshall Center. "But we're early on in the process [of development]," he said during a teleconference with reporters today.

 

It's been NASA's call for cheaper, more capable, and safer spacecraft that has prompted the effort for a successor shuttle. And while many of the previous designs never got much past the drawing board, the attempts could help lead the industry and the U.S. space program to newer technologies for reaching the stars.

 

One example of the more recently attempted shuttle replacement efforts was the so-called Reusable Launch Vehicle, or RLV, program. Commissioned under President Clinton in 1994, the project hoped to develop a truly reusable space "plane."

Click for Spoiler:

The experimental shuttle design, dubbed the X-33 by Lockheed-Martin, would be a so-called single-stage-to-orbit vehicle. Launched vertically like the current shuttle, the X-33 would reach orbit using its own internal engines and fuel.

 

Once the mission was completed, it would glide back to land on a runway just like current shuttle. Its single-piece design meant that a working X-33 craft would need less work — and less expense — to prepare it for the next mission.

 

Technology Setbacks, Cost Overruns

 

It was hoped that the X-33 could save as much as 90 percent of current shuttle's launch costs.

 

But to lift the X-33, its payload and internal fuel without external assistance, designers turned to new rockets called aerospike engines that were supposed to propel the craft at up to 18 times the speed of sound. New lightweight, composite materials were supposed to keep the weight of the X-33 down as well.

 

Charles Vick, an analyst with space and defense think tank GlobalSecurity.org in Alexandria, Va., says that such immature technologies ultimately led to the X-33's downfall.

 

"[Advanced] materials for the fuel tank really struck out," says Vick, who notes that a fuel tank ruptured during ground testing in 1999 and caused massive delays and cost overruns.

 

After two years of redesign work — and a total investment of more than $1 billion — the project failed to produce a flying prototype and was subsequently canceled in 2001.

 

Still, NASA hasn't exactly given up on new launch systems.

 

Last November, NASA Administrator Sean O'Keefe announced a renewed effort to look at low-cost alternative spacecraft under a revamped program called the Space Launch Initiative, or SLI.

 

Rather than look for an outright shuttle replacement, the $4.5 billion program will study a variety of inexpensive options that would supplement the shuttle.

 

One such craft, the X-37 from Boeing, is designed along the lines of the X-33, using lightweight composite materials. However, rather than a single stage vehicle, the X-37 would be lofted into orbit using a large, disposable rocket booster.

 

Once in orbit, the craft could deploy satellites or conduct experiments in space for up to 21 days before gliding back down to Earth. But what makes the X-37 a potential cost-saving vehicle? Unlike the shuttle, the X-37 will be a completely unmanned craft.

 

For now, there are no plans to develop a completely robotic space shuttle. But if the technology works, elements may appear in another component of the SLI: the orbital space plane, or OSP.

 

Designs proposed by companies such as Northrop Grumman and Orbital Sciences Corp. envision the OSP craft to be shuttle-like, but roughly one-fourth the size of spacecraft such as the Columbia. OSPs would carry at most a crew of five and small cargo loads — typically supplies and scientific experiments that can be moved by the astronauts themselves.

 

GlobalSecurity's Vick says a smaller shuttle such as the OSP could be launched at the tip of cheap disposable rockets, such as the Delta 4. And such a small hybrid system would be "more reliable, and safer than any shuttle system that we have now," adds Vick.

 

What's more, industry and NASA advocates of the OSP concepts say smaller, lighter, and cheaper shuttles would be just the right vehicle for most missions to and from the orbiting International Space Station, or ISS. Instead of using the current, truck-like space shuttle, the OSP would operate as an efficient space "taxi," ferrying just the needed crews and supplies.

 

Still, such systems won't be able to carry large payloads — such as solar panels and other parts to help build out the ISS. So, new shuttles such as the OSP will be complementary crafts to the current fleet of NASA shuttles. And the first SLI prototypes, such as the X-37, aren't scheduled for any real tests until next year. That means a new launch vehicle probably won't be put to real-world use until 2006 at the earliest.

[Chataeya 0]

:) I LIKE THE TOP ONE THE BEST........LOOKS SLEEK.

[Yillara Skye 1]

hmmm... though I liked the original design.. it is getting old, and I am not sure which one looks best. But then looks are not always everything, which is more efficient or aerodynamic :) ?

[VaBeachGuy 12]

This is a picture of the only real life true "Space Ship".

 

 

This one is in the National Air And Space Museum in Washington, D.C. I've seen it up close on a number of occasions.

[Yillara Skye 1]

This is a picture of the only real life true "Space Ship".

 

 

This one is in the National Air And Space Museum in Washington, D.C. I've seen it up close on a number of occasions.

:)

Since I have wanted to be an Astronaut since I was 3, I agree...(though I still love the space shuttle- I am/was just under 1 year older than the Columbia :) )

 

I too, have seen this at the Smithsonian, last time I got to was back in 1997.

[VaBeachGuy 12]

This is a picture of the only real life true "Space Ship".

This one is in the National Air And Space Museum in Washington, D.C. I've seen it up close on a number of occasions.

:)

Since I have wanted to be an Astronaut since I was 3, I agree...(though I still love the space shuttle- I am/was just under 1 year older than the Columbia :) )

 

I too, have seen this at the Smithsonian, last time I got to was back in 1997.

Last time I was there was probably 1987 when I was a Sr. in Highschool. Between 1978 and 1987 I probably went about 25 times though. I grew up 15 to 20 minutes from Washington so it was just a short subway ride to get downtown.

[Yillara Skye 1]

This is a picture of the only real life true "Space Ship".

This one is in the National Air And Space Museum in Washington, D.C. I've seen it up close on a number of occasions.

:)

Since I have wanted to be an Astronaut since I was 3, I agree...(though I still love the space shuttle- I am/was just under 1 year older than the Columbia :) )

 

I too, have seen this at the Smithsonian, last time I got to was back in 1997.

Last time I was there was probably 1987 when I was a Sr. in Highschool. Between 1978 and 1987 I probably went about 25 times though. I grew up 15 to 20 minutes from Washington so it was just a short subway ride to get downtown.

Last time was '97, but before that was in '81 or '82. Iwas really little but, loved it there. My dad wanted to go to one of the other museums, but I made a fuss and they later took me to where I was happiest.. the Air & Space museum. In '97 I was up in DC as a part of the National Young Leadership Council, and as a part of our stay, we were allowed to select a museum...guess where I beelined to?? Air and Space Museum. I guess then it was a right decision for me to try to become an astronaut, which is still what I am working towards(i really want to be a mission specialist).

[Goose 0]

Stardate:213504.9

 

 

Is it just me or does that first design look a little like the shuttle that appears in ENT opening credits??

[TrekkieMage 0]

Last time I was there was probably 1987 when I was a Sr. in Highschool. Between 1978 and 1987 I probably went about 25 times though. I grew up 15 to 20 minutes from Washington so it was just a short subway ride to get downtown.

Last time was '97, but before that was in '81 or '82. Iwas really little but, loved it there. My dad wanted to go to one of the other museums, but I made a fuss and they later took me to where I was happiest.. the Air & Space museum. In '97 I was up in DC as a part of the National Young Leadership Council, and as a part of our stay, we were allowed to select a museum...guess where I beelined to?? Air and Space Museum. I guess then it was a right decision for me to try to become an astronaut, which is still what I am working towards(i really want to be a mission specialist).

One thing I want to do this summer is go there. I've been there in the past two years, but on school trips where we have to be at a certain place and we're only there for about two hours.

 

And considering that my family has such close ties to the Air and Space museum...We have pictues of Paul Garber, the man who created the Air & Space, at my parents wedding...I personally feel a really close tie with the place, and I just want to spend a whole day there.

 

About the shuttles, I really like this one:

 

[master_q 0]

Well there is a lot of talk about new designs.

 

The thing that I’m more enthusiastic about is the project x (and project Prometheus). Project x is a competition among private companies to develop a space craft. The standards for this competition are that the craft must go to a very high altitude on earth and come back down. The private company or investor that can do this will win.

 

 

I posted a topic before on the best thing we could do to support and to “boom” the space industry. I said that it was tourism. For what ever reason (I don’t follow there logic at all) some people disagreed with me and said that it would hinder the people that trained for years, but I disagree. I think this would create money and help the space industry. It would only do good! It would make space travel safer for those people that put so much effort to actually get up into space. It would develop technologies. The list is endless ...

 

If we could get private companies into space, then that would be a boom to the space industry. It is simple logic and is simple math.

 

For the project Prometheus it is a NASA project working on nuclear vessels. If we really want to go to places like Mars, then I think nuclear will have to be the answer. The NAVY was worked with nuclear vessels for years and I believe nuclear power can also help space travel.

 

For this specific design it looks good, but I think if we really want to push the space exploration we have to look at project x and Prometheus.

 

. . .

 

 

Master Q

StarTrek_Master_Q@yahoo.com

[Yillara Skye 1]

One thing I want to do this summer is go there. I've been there in the past two years, but on school trips where we have to be at a certain place and we're only there for about two hours.

 

And considering that my family has such close ties to the Air and Space museum...We have pictues of Paul Garber, the man who created the Air & Space, at my parents wedding...I personally feel a really close tie with the place, and I just want to spend a whole day there.

Wow! he was at their wedding?? That must have been neat!

[TrekkieMage 0]

One thing I want to do this summer is go there. I've been there in the past two years, but on school trips where we have to be at a certain place and we're only there for about two hours.

 

And considering that my family has such close ties to the Air and Space museum...We have pictues of Paul Garber, the man who created the Air & Space, at my parents wedding...I personally feel a really close tie with the place, and I just want to spend a whole day there.

Wow! he was at their wedding?? That must have been neat!

Probably, but I don't know. I wasn't there :)

 

We also live in his old house...Smithsonian cleared it out years ago, but he used to have postersed signed by Charles Lighnberg (I don't know how to spell his name).

 

Kind of mind boggling to know what kind of stuff used to lie around our attic!

[Yillara Skye 1]

We also live in his old house...Smithsonian cleared it out years ago, but he used to have postersed signed by Charles Lighnberg (I don't know how to spell his name).

 

Kind of mind boggling to know what kind of stuff used to lie around our attic!

I'll bet! How interesting!

[Data 0]

Hmmm, this makes me wonder. Where will we be in 2151?

[Yillara Skye 1]

Hmmm, this makes me wonder. Where will we be in 2151?

Hopefully a lot better off, and farther along than we are now...