Showing posts with label Mars. Show all posts
Showing posts with label Mars. Show all posts

Saturday, May 07, 2016

What a real spaceship would look like

Or could look like, based on technology we already have or have within our grasp:



The video is from 2011, so no doubt there have been many revisions since. A similar, but more advanced looking ship was used in the movie The Martian. No doubt based on this design.



So when are we going to see this ship for real? Not in my lifetime, I expect. In a world where industrialized, technologically advanced nations are over budget, bordering on bankruptcy and/or currency collapse, I don't realistically see funding for projects like this for a long, long time. If ever. It may remain just a dream, only fulfilled in movies. CGI special effects are so much cheaper than reality.

For more photos from the movie, and commentary of the science, follow this link: SCIENCING THE MARTIAN
     

Saturday, August 02, 2014

A propulsion drive without fuel?

Yes, and it may take us to Mars:

EmDrive Is an Engine That Breaks the Laws of Physics and Could Take Us to Mars
An experimental engine is gaining acceptance among scientists, and could introduce a new era of space travel — it only had to break a law of physics to do so.

The picture, below, is of the EmDrive. It uses electricity to generate microwaves, which then bounce around in a closed space and generate thrust. The drive does not need propellant, an important part of current space-travel mechanics.


The force generated by the drive is not particularly strong, but the implications are big. Multiple independent experiments have now replicated the drive's ability to generate thrust, albeit with varying success. Using panels to convert solar energy into electricity and then into thrust, opens the door to perpetual space travel fueled by the stars.

Scientists were slow to warm up to the EmDrive since it violates the law of the conservation of momentum. In addition to not being sure why it works — current theories rely on quantum mechanics — scientists also have some pretty good ideas why it shouldn't work. [...]
Follow the link for pics, video and embedded links.
     

Wednesday, May 15, 2013

Tuesday, August 28, 2012

Song will Premiere Broadcast from Mars

NASA, will.i.am to Premiere Song Live From Mars
Black Eyed Peas co-founder William Adams, a.k.a. will.i.am, is working with NASA on an interplanetary stunt with chart-disrupting implications—the musical artist's new single "Reach for the Stars" will premiere live from the surface of Mars via the space agency's Curiosity rover.

"Reach for the Stars" will be broadcast by Curiosity at 4 p.m. on Tuesday, NASA said in a statement. Curiosity, the largest automated mobile lab NASA has sent to the Red Planet, touched down on Mars on Aug. 5 after more than eight months in space.

The premiere of the song will coincide with an event at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif., mission control for the Curiosity expedition. Fans will be able to tune into the premiere of "Reach for the Stars" online via NASA TV, which will stream the broadcast live.

Will.i.am, through his i.am.angel Foundation, is also working with NASA and Discovery Education, a developer of digital educational resources, to push a new science, technology, engineering, arts, and mathematics initiative leveraging Curiosity and other NASA probes, the agency said.

The singer has taken a keen interest in science and technology in recent years. Named "director of creative innovation" by Intel in early 2011, will.i.am has participated in the FIRST Robotics Competition for high school students and has discussed starting a car company.

In one interview on the red carpet, (video below) he said: "The world doesn't need another musician. They need another Bill Gates." [...]
Kewl!    

Saturday, May 24, 2008

Sunday is a Mars landing for Phoenix spacecraft


A new Mars lander, checking for water and signs of life, past or present:

NASA preps for '7 minutes of terror' on Mars
(CNN) -- In the wake of the wildly successful Spirit and Opportunity rover missions, you would think NASA would approach the landing of the next Martian probe with high confidence.

But the truth is sometimes not what you would think.

"I do not feel confident. But in my heart I'm an optimist, and I think this is going to be a very successful mission," said principal investigator Peter Smith, an optical scientist with the University of Arizona. "The thrill of victory is so much more exciting than the agony of defeat."

Indeed, the truth is that the planetary scientists and engineers who make up the Mars Phoenix Lander team will be biting their nails Sunday evening as they cluster around computer monitors in mission control at the Jet Propulsion Laboratory in Pasadena, California.

That's when their spacecraft, which launched to Mars in August, will finally arrive on the Red Planet.

Everyone on the team is primed and ready to get down to business, putting the suite of scientific instruments aboard Phoenix to work analyzing the soils and permafrost of Mars' arctic tundra for signatures of life, either past or present.

But first, they have to get the lander on the ground, and that's where the worry comes in. In fact, they have a name for it in the Mars exploration community: "seven minutes of terror."

Seven minutes is all it takes for a spacecraft travelling neary 13,000 miles per hour to hit the Martian atmosphere, slam on the brakes and reach the ground.

During that time, onboard computers will be working at a manic pace as the spacecraft deploys its parachute, jettisons its heat shield, extends its three legs, releases the parachute and finally fires its thrusters to bring it down for a soft landing. Hopefully.

"Everything has to go right," NASA Associate Administrator Ed Weiler said. "You can't afford any failures."

It's risky business. Historically, 55 percent of Mars missions have ended in failure. And tensions will be particularly high with the Phoenix spacecraft. [...]

See the rest of the article for details of the risks. I saw a video simulation of the landing on Fox News. It involves thrusters and landing on legs. If even one sequence proceeds incorrectly, the whole mission could be ruined. But if they succeed, it will be marvelous. Lets hope for the latter!



There are more details about the mission at NASA's Website. Check out the videos on the right side bar.


UPDATE 05-25-08: Success!

NASA Spacecraft Makes Historic Landing on Mars
     

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...