Showing posts with label Lunar Lander. Show all posts
Showing posts with label Lunar Lander. Show all posts

Wednesday, December 11, 2013

The Moonbase That Almost Was

Moonbase Apollo (1968)
[...] Not widely known is that in 1968, as it prepared its first piloted Apollo flight – Apollo 7, which flew in September 1968 – and its Fiscal Year 1970 submission to the Bureau of the Budget, NASA briefly considered an alternate approach to Apollo. Had it been pursued, it might have laid the technological foundation for a permanent moon base in 1980. After perhaps three Apollo exploration missions to different landing sites, NASA would have dispatched a series of Apollo missions to a single site.

In addition to intensively exploring the selected site, the astronauts would have performed engineering and life sciences experiments, assessed the lunar environment for radio and optical astronomy, and experimented with resource exploitation. The single site revisit missions would have played the role for a permanent lunar base that Gemini played for Apollo; that is, it would have enabled NASA to acquire operational skills needed for its next step forward in space.

The single site revisit concept – sometimes called the “lunar station” concept – got its start some time before 30 April 1968, when the NASA-appointed Lunar Exploration Working Group (LEWG) presented it to the Apollo Planning Steering Group. Lee Scherer, director of the Apollo Lunar Exploration Office at NASA Headquarters, asked mission planner Rodney Johnson on 7 May to chair a 10-man Single Site Working Sub-Group of the LEWG. He directed Johnson to present a progress report at the LEWG meeting scheduled for the third week of May. The Sub-Group held a two-day meeting on 12-13 May and presented results of its brief study at the 22 May LEWG meeting. It issued a revised final report on 4 June 1968.

The Sub-Group’s report began by declaring that a 12-man “International Lunar Scientific Observatory” in 1980 could become a new “Major Agency Goal” for NASA. The single site revisit missions, it continued, would pave the way by demonstrating the value of a permanent lunar base. The Sub-Group then examined four options for carrying out its single site revisit program, which it labeled 0, A, B, and C. All would employ spacecraft and standard Saturn V launch vehicles the space agency had already ordered for Apollo. [...]
The rest of the article is about the plans, with some neat diagrams of next-stage Lunar exploration vehicles similar to the originals, but more advanced. But alas, it was not to be. We got the Space Shuttle instead, which was interesting, but in many ways a divergent distraction from real space exploration. If Apollo had kept going... well, we'll never know, because it didn't.

And won't likely start again any time soon. Not by us, anyway. The Chinese like to think they will, but I wouldn't hold my breath waiting.
     

Saturday, August 25, 2012

R.I.P. Neil Armstrong


From Wikipedia: Neil Armstrong
Neil Alden Armstrong (August 5, 1930 – August 25, 2012) was an American astronaut, test pilot, aerospace engineer, university professor and United States Naval Aviator. He was the first person to walk on the Moon. Before becoming an astronaut, Armstrong was a United States Navy officer and had served in the Korean War. After the war, he served as a test pilot at the National Advisory Committee for Aeronautics High-Speed Flight Station, now known as the Dryden Flight Research Center, where he logged over 900 flights. He graduated from Purdue University and the University of Southern California.

A participant in the U.S. Air Force's Man In Space Soonest and X-20 Dyna-Soar human spaceflight programs, Armstrong joined the NASA Astronaut Corps in 1962. His first spaceflight was the NASA Gemini 8 mission in 1966, for which he was the command pilot, becoming one of the first U.S. civilians in space.[1] On this mission, he performed the first manned docking of two spacecraft with pilot David Scott.

Armstrong's second and last spaceflight was as mission commander of the Apollo 11 moon landing in July 1969. On this mission, Armstrong and Buzz Aldrin descended to the lunar surface and spent 2½ hours exploring, while Michael Collins remained in orbit in the Command Module. Armstrong was awarded the Presidential Medal of Freedom by President Richard Nixon along with Collins and Aldrin, the Congressional Space Medal of Honor by President Jimmy Carter in 1978, and the Congressional Gold Medal in 2009.

On August 25, 2012, Armstrong died in Cincinnati, Ohio[2], at the age of 82 due to complications from blocked coronary arteries. [...]

Read the whole thing for details about his interesting life and achievements.



Also see:

Neil Armstrong remembered as a 'reluctant American hero'

Neil Armstrong: modest man, large footprint in time and space

     

Tuesday, May 05, 2009

Orion Spacecraft Changes; Budget Problems

In an earlier post, I looked at the plans for the new Orion spacecraft that is supposed to replace the shuttle and take us back to the moon. NASA was still trying to decide whether or not it would touch down on land or on water:

Re-entry Dilemmas; the Orion Capsule and SS2.

At the time, opinion seemed to be leaning toward land, because the spacecraft would then be re-usable, and would save a lot of money in the long run. So I was kind of shocked to see this recently:

NASA keeps Orion landing reassessment results secret
NASA's work to resolve its Orion crew exploration vehicle's (CEV) landing system mass problems is being prolonged as one key study's deadline has been extended by six months, pushed back from March to the CEV's third quarter preliminary design review.

On 16 November 2007 NASA changed the Orion's nominal landing from land to water because of the mass penalty of carrying the necessary airbag system to the Moon and back. But the agency also decided it needed an emergency land landing capability. [...]

I'm shocked because landing on land was supposed to mean reusable capsules, and big savings in the long run. Aren't those savings now voided by going back to ocean landings? Also, this change has caused budget over-runs. That, combined with the fact that the Bush Administration failed to deliver the funds that were promised, has now put the entire project behind schedule:

NASA could delay plan to land astronauts on moon
[...] NASA's internal plans had called for Ares V to go to the moon in 2018, though the agency had announced a public goal of 2020. Internal deadlines are used by NASA to keep programs on track and to provide a margin of error for developmental problems.

But because of growing budget woes, the agency is resetting its internal date to 2020. And privately, engineers say that means the public 2020 date to send humans back to the moon is in deepening trouble.

[...]

Former NASA administrator Mike Griffin in a speech last week blamed the White House -- especially the Bush administration. He said that money available for Ares V and other moon projects had dropped from roughly $4 billion through 2015 to just $500 million.

"This was to be allocated to early work on the Ares V heavy-lifter, and the Altair lunar lander," he told the National Space Club annual Goddard Memorial Dinner. "With only a half-billion dollars now available, this work cannot be done."

[...]

The 2020 lunar launch date is a policy objective set by President Bush in 2004 and recently reaffirmed in President Obama's 2010 budget proposal. It's part of what the Obama team in February called a new chapter of "robust human and robotic space exploration." [...]

President Obama is supporting the project so far, but as it continues to fall behind, it's not looking very hopefull. Read the rest of the article for the details.

     

Friday, December 12, 2008

Will Obama cancel NASA's Moon Mission?

Let's hope not. I've written before about NASA's Constellation Program, which aims to replace the space shuttle with Ares rockets and the Orion spacecraft, which can also be used to bring us to the moon again. Will the financial crisis affect this program? What will an Obama administration do?

Mock-up of Orion spacecraft with Lunar Lander

The space program has always been a target for budget cutters. Many people view it as an extraneous waste of money. Many Democrats in particular, think the budget for the space program would be better spent on social programs.

It's quite natural that we should wonder what Obama's plans are for NASA and the Constellation Program in particular. It seems there has been a lot of tension between NASA's current administrator, and Obama's transition team:

NASA has become a transition problem for Obama
CAPE CANAVERAL – NASA administrator Mike Griffin is not cooperating with President-elect Barack Obama’s transition team, is obstructing its efforts to get information and has told its leader that she is “not qualified” to judge his rocket program, the Orlando Sentinel has learned.

In a heated 40-minute conversation last week with Lori Garver, a former NASA associate administrator who heads the space transition team, a red-faced Griffin demanded to speak directly to Obama, according to witnesses.

In addition, Griffin is scripting NASA employees and civilian contractors on what they can tell the transition team and has warned aerospace executives not to criticize the agency’s moon program, sources said.

Griffin’s resistance is part of a no-holds-barred effort to preserve the Constellation program, the delayed and over-budget moon rocket that is his signature project.

[...]

The tensions are due to the fact that NASA’s human space flight program is facing its biggest crossroads since the end of the Apollo era in the 1970s. The space shuttle is scheduled to be retired in 2010, and the next-generation Constellation rockets won’t fly before 2015.

Nearly four years ago, President Bush brought in Griffin to implement a plan to return astronauts to the moon by 2020 as a prelude to going to Mars. Griffin and his team selected Constellation, with its NASA-designed Ares I rocket and Orion capsule, as cheaper and safer than existing rockets. Constellation – especially Ares 1 -- is the center of what Griffin sees as his legacy to return humans to the frontiers of space.

Griffin has made no secret that he would like to stay on but only, as he recently told Kennedy Space Center workers, "under the right circumstances," including being able to finish Constellation.

But budget problems and technical issues have created growing doubts about the project. Griffin has dismissed these as normal rocket development issues, but they’ve clearly got the transition team’s attention.

When team members arrived three weeks ago, they asked the agency, among other things, to quantify how much could be saved by canceling Ares I. Though they also asked what it would take to accelerate the program, the fact that the team could even consider scrapping the program was enough to spur Griffin and his supporters into action

According to industry officials, Griffin started calling heads of companies working for NASA, demanding that they either tell the Obama team that they support Constellation or refrain from talking about alternatives. [...]

I would like to see the Constellation program stay on track. The Orion spacecraft is needed to replace the aging shuttle fleet, and will be more economical in the long run. It's needed to service the ISS too, so I suspect it may continue on schedule. But the return to the moon, I don't know. It would be nice if Obama were to look on it the way JFK did.

Back to the moon by 2020. Will we make it?

A great deal of time and resources have already been expended on the current plan; altering it significantly could throw a lot of that investment away. Also, NASA is providing jobs in the high tech industry, even in the private sector, and creating spin-off technologies that help us in so many ways. There is so much going right with it presently, I'm hoping that an Obama administration will choose to build on that rather than subtract from it.

I know Obama's team has to ask questions and make assessments. As to what he will do, I'm hoping he's going to be a JFK kinda guy in this regard.


Ares I rocket propelling Orion space capsule

The Constellation program will ultimately be not only less expensive, but safer for our astronauts too. It can service the ISS, AND get us to the Moon again, as well as assist us to getting to Mars eventually. Hopefully Obama can make it part of his plan and his presidential legacy, too.
     

Sunday, January 13, 2008

NASA goes Back to the Future

I remember when I was a teenager, when the first American Space Shuttle was unveiled. It was kinda fat and chunky looking, but it was still a real spaceship. It was a beginning. I was sure that within my lifetime, we would eventually have spaceships like the elegant Orion Space Clipper that was featured in the movie "2001: A Space Odyssey":




Wow. Well, here it is, 2008. NASA is going to retire our clunky space shuttle by 2010, and introduce a newer, next-generation spacecraft to replace it. Coincidentally, it's going to be called "Orion", and will be used to shuttle astronauts to and from the International space station, AND to the moon and back. That's right, we're going back to the moon, and it's scheduled to happen no later than 2020. Then, on to Mars...

Fabulous! Soon we will get to see this new Orion spaceship, which is being built right now. But we don't have to wait until it's finished to see it, NASA has already made the plans public! So here it is, the NEW Orion space shuttle:




But, but... that's an APOLLO space CAPSULE, isn't it? Well, it's a similar design. It's actually 2 and 1/2 times larger than the Apollo version, it can hold up to six astronauts for shuttle missions, and four astronauts for Lunar missions. Here is a picture of the Orion with a lunar module attached:




Looks familiar, doesn't it? I had trouble deciding wether to call this post "Back to the Future" or "Everything old is new again".

So what happened to our beautiful Orion Space Clipper? Why are we going back to designs from 40 years ago? There's two major reasons I can think of: cost, and safety.

These old designs are tried and true. We know they work. Update them with new technology, and they work really well. I also suspect that with new technology, they are cheaper to build than anything else. Here is a picture of the new Orion capsule with it's solar cells and antennae dish deployed:






We are simply building on old technology, using what we know works, and making it better. Click here for more pics of the Orion spacecraft.

The space shuttle aircraft we've used for the past three decades are made from a more bold and ambitious design, but are also more complex and fraught with dangers. Consider the Challenger accident, the shuttle that exploded after launching; the Columbia burning up while returning to earth.

The Challenger crew could not be saved. However, with the new Orion design, the crew can be saved if the rocket explodes on the launch pad, or in the air. The capsule has a rescue rocket on top, to lift it way from danger.

The Columbia crew died when their damaged heat shield failed on reentry. The Orion capsule's heat shield is protected from damage during liftoff, and is a round shape that is easier to build and maintain.

Every time astronauts die, people call for an end to the space program. By going back to old designs and improving them, we are saving both money and lives. It's hard to argue with that. So I may not see this in my lifetime:





But hopefully I will see this:





If we have to sacrifice elegant design for the safety of our astronauts and the efficiency of our space program budget, then so be it. As we learn more we can get fancier; but we need to grow into it at a natural pace. Slow but steady progress with it's attendant successes will get us where we want to go.

The new back-to-the-moon mission is called the Constellation Program. The link goes to NASA's website, where you can find out lots more details about the mission and photos of the various spacecraft being developed. I had lots of fun looking around there. If you are a space fan, be sure and check it out.






It's back to the future... are you ready? I am, let's go!





First, the moon once again. Then look out Mars, here we come...