Spacesuit Malfunction on Yesterday’s Spacewalk

•July 17, 2013 • Leave a Comment

Yesterday, a spacesuit malfunction during a spacewalk brought Italian astronaut Luca Parmitano back into the International Space Station early.  It appears that a leak in his cooling system (LCGV) caused liquid to get inside his helmet.  This was scary for Luca, for sure.  But, since all spacewalks are dangerous by nature, there are many different procedures and steps to follow in case of an emergency, so the situation was handled quickly, and Parmitano is safe and sound in the International Space Station.

Here is a post from Luca Parmitano’s blog from two days ago.  It’s a great summary of a spacewalk, and there’s a good description of what is involved in getting ready for the walk, too. (If you’d like to follow his blog, it can be found at: http://blogs.esa.int/luca-parmitano/)

A Stroll Into Space

The airlock is dark and silent as a temple, perhaps one dedicated to technology. As I enter, it has the calming effect of a prayer.

It’s still early but I’ve already been up and about for an hour. After shaving more carefully than usual (I don’t want to have any cuts on my head or face), I have a particularly big breakfast – there’ll be no lunch today. Then I turn to Chris, and he must have been able to read the question on my face, because he answers even before I have time to speak: “Yes, let’s do this”. In other words, it’s time.

The first step towards an EVA is a very long series of procedures, all designed to keep us safe. After putting on a sub combination (a sort of underwear that covers us from the neck to the ankles) and the LCVG undergarment (Liquid Cooling and Ventilation Garment), we breathe pure oxygen for about 40 minutes to remove nitrogen from our bodies. Meanwhile, the team on the ground takes us through a series of checks on our EMU (Extravehicular Mobility Unit) suits.  We carry out these out meticulously; even though I have followed these choreographed steps so many times on the ground during simulations, now it’s for real and I will soon depend on this cumbersome suit to survive outside the Station. In space. This is such an incredible idea that my brain doesn’t stop to dwell on it, and instead I focus on the activities underway. Time goes by in a flash, and suddenly it’s time for one last snack before we put on the suits. For around 9 hours, I won’t be able to eat anything. All I’ll have is a plastic straw that will allow me to drink while I’m outside.

Putting on the space-suit requires considerable physical effort, especially for the top part. The torso section is stiff and tight, especially for me because I chose a smaller size in order to be more agile. And I will be more agile but the price I pay is having to contort my arms and shoulders while pushing with my feet as hard as I can, until my head fits through the metal collar and my hands pass through the wristbands of the suit.

Karen and Chris attach the lower part of my space-suit (the “trousers”) and then it’s Chris’s turn to make a similar effort to get into his suit. As carefully as she can, Karen locks the helmets onto both suits and blocks them, sealing us inside. Then we’re on to the second stage: the desaturation procedure, during which time the suits are flooded with oxygen and the airlock is brought to a pressure of 10.2 psi. While this is happening, Chris and I go over the procedures that we will follow for the umpteenth time, focusing on every aspect of the exit, every movement and every detail of what we are about to perform. The checks continue as planned and the suits are in perfect working order. This is confirmed by Houston, who are following everything via telemetry, even our biomedical data.

Fyodor arrives to help Karen to install our equipment and to help us enter the sealed chamber itself. This area, slightly larger than the two suits we are wearing, must accommodate not only us but also all the tools to be used for maintenance work and instruments that need replacing. I turn on the pump to depressurize the environment to 2 psi; Karen then opens a valve to vent the rest of the atmosphere. I seem to be aware of everything going on around me and it feels as though I’m watching everything in slow motion. Suddenly, I realize that the cacophonous metal din coming from our floating tools has vanished. Sound isn’t travelling anymore and even before Chris tells me, I know that depressurization is complete: we are out in space.

Credits: NASA

With his characteristic calm, Chris opens the hatch and I have my first view of Earth rolling beneath my eyes. My visor is the only thing both separating me and protecting me from the blazing light. The crystal blue is hypnotic, but there is no time to stop. Chris is ready to exit and he’s out in a few seconds. It’s my turn now. With rehearsed and methodical composure, I perform every movement like a dancer follows his choreography, but I’m not looking for the final applause – I just want to be sure I don’t make any mistakes. When Chris tells me, “OK, you’re out!”, I know he has a smile on his lips, even though I cannot see him because we both have our gold visors down. It’s daylight, and the light is so pure and bright that it hurts.

Suddenly, Chris is gone, and I close the insulating cover that protects the inside of the airlock. Houston tells me that I can take all the time that time I want to adapt, but I have other plans: I’ve already decided that I’ll adapt while I move to my destination: ELC2. And as soon as I start to move, I realize that I’ll have no problems: I feel fine, relaxed – in my element in an environment which should feel totally alien to me. Instead it feels almost familiar. Hundreds of hours underwater have had the desired effect. As I move, I see North America pass under me, tinged with the light of sunset.  I feel so good I can’t stop myself from smiling. But my smile doesn’t last long. When I get to my planned location to anchor the first of the two self-reeling cables that secure me to the Station, my eyes start burning as if I had rubbed them with soap and they become very watery. At first, I don’t understand what’s going on: tears are pouring out of my eyes and it stings so much that I can’t keep them open. I decide to stabilize myself for a moment to think. I shake my head from side to side – in orbit tears don’t roll down your cheeks, they just accumulate on your eyes. Then I understand what is happening: during our preparations, we cleaned the inner part of the visor with an antifogging agent. Because of the low pressure, the product had evaporated and it must have gone into my eyes, irritating them. I know that the effect will last a couple of hours and that there’s nothing I can do. I resign myself to the burning sensation and I have to shake my head time and again to make the tears stop.

Following the route I studied so many times, I find myself at ELC2, the platform for experiments and equipment installed on the trellis on the right: a huge structure located on the side facing black space. It’s already dark and as I climb I am conscious that at this very moment, I am the furthest man from the surface of the Earth, especially when I find myself “upside down” to take pictures of the two experiments that I have come to collect: ORMATE and PEC – two platforms of materials exposed to the void.

To remove them, I have to use my pressurized gloves with the utmost dexterity. Each time I bend my fingers it’s like squeezing a tennis ball, and I’m very careful not to wear my hands out. Opening one eye at a time – they are still watery – I manage to dismantle the two platforms and place them on my space-suit to bring them back inside. Shane, our radio contact from the ground, tells us that we are 20 minutes ahead of schedule and this gives me a lot of confidence while hooking the two experiments inside the airlock and taking the tools I need for the next task, which is to install the APFR (Adjustable Portable Foot Restraint) on the Canadarm2. Installing the APFR and ingressing into it goes smoothly but even so, before I give Karen the OK – she is at the commands of the robotic arm – to move away from the structure, I ask Chris to confirm that my feet are properly fastened to the platform: they are the only thing keeping me attached to the Canadarm!

Credits NASA

While the arm moves to the first of several repositionings, a display of incomparable beauty unrolls before my eyes: dawn in space. The colours absorb the black, white and grey at incredible speed in a chromatic explosion. We are flying above north Africa and red, yellow, purple and ochre fill my eyes with wonder.

For the hour and half that follows, I am transported from one side of the Station to the other by the robotic arm, both in automatic and manual mode, always with Karen at the controls. The task consists of taking two huge RGBs (Radiator Grapple Bar) from their temporary location to install them at their permanent one. Between stages, I uninstall a broken camera to take inside at the end of the EVA.

In what feels like an instant, it is time to free myself from the arm and return it to its initial state (by removing the APFR). Then I move to the “tip” of the ISS, the PMA2  – the old Shuttle docking point, which needs to be protected by a thermal cover. According to our plan, this task requires two astronauts because of the difficulties encountered on the ground in managing the cover. But Chris has hit a problem: while installing an electrical cable, he has to muster all his force to connect the ends to the structure of the Station. The cable has been rolled up for about 10 years and is now reluctant to straighten out,  so Chris tells me he will need more time. I will have to take care of the cover by myself. Galvanized by the challenge before me, I almost forget where I am: just at the prow of the ship, and with the whole ISS behind me! When the sun rises once again I am almost overwhelmed by what I see.

Credits: ESA/NASA

But there’s not a moment to waste because the job requires my full attention as I move from one side of the PMA2,  unfastening myself  from one place then attaching myself immediately to another. My hands are getting tired, because I have to keep moving the cover to secure it to the structure. I have no idea how long it’s going to take me, but when I finish we are still ahead of schedule. I have a sip of water, then I retrieve two of the containers we brought out with us and return them to the airlock. I install a third container that will stay outside for one week: we will bring it in during our second EVA. Chris finishes his last job, a precursor to one of my tasks next week, and I reach the entrance to the airlock. Before ingressing we can’t help but snap a few photos. Then I turn around for one last look at Earth, suspended like a jewel in the velvet blackness of space, before entering the airlock. Within a few minutes, Chris is also back inside and we are ready to close the hatch.

It’s all over in an instant. It’s been 6 hours and 7 minutes.

http://www.nasa.gov/sites/default/files/files/us_eva23_timeline2.pdf

NASA/LEGO Contest!! Click here to Join Thursday’s Google+ Hangout to find out more about the contest!!

•July 9, 2013 • Leave a Comment

NASA/LEGO Contest!! Click here to Join Thursday’s Google+ Hangout to find out more about the contest!!

On Thursday at 11am EST, I will be part of the team promoting the NASA/LEGO “NASA’s Future: Imagine and Build” contest.  Build an aircraft of the future or a future spacecraft out of LEGO bricks.Our NASA and LEGO teams have been working together for over a year to build this contest, and there are some great prizes. 

We’re broadcasting the Hangout live in the NASA TV studio, and will be joined by some of our international LEGO team as well.  Share the contest, and Thursday’s event, with anyone who might be interested. 

See you there!

Bugs on the windshield? What about bugs on airplane wings?

•June 17, 2013 • 2 Comments

NASA Aeronautics Research is constantly working on research projects that will lessen the amount of fuel aircraft use, quiet the engines, and improve safety.  In the latest round of fuel efficient research projects, you will find “the bug gun.”  Researchers at Langley Research Center in Virginia are working on finding a coating that will help keep bugs from sticking to airplane wings. bug tests

Getting a wing ready in the BART wind tunnel at Langley.

Getting a wing ready in the BART wind tunnel at Langley.

The researchers first used crickets, which they bought at a pet store, but they were too big for the small wind tunnel.  So instead, they now use fruitflies–lots of them–and put them into their “bug gun” and fire them at the wing edge at 150 mph.  The goal is to find a coating that will keep bug parts from sticking to the wings.  Less stuff on the wings creates less turbulence, which means the plane uses less fuel.  While it might not seem like an accumulation of bug parts would amount to much, it does.  Airlines spend more than half of their operating budget on fuel, and with jet fuel at almost $5 a gallon, gas mileage with millions of miles makes a huge difference.

So who wants a job firing the bug gun? (Dad?  It could be your dream job.)

Take a Ride to Space–the Reality is Getting Closer!

•April 29, 2013 • 1 Comment

Today, Virgin Galactic tested their Spaceship Two vehicle, the one that will one day take passengers to space.  (The pricetag for a ride–a mere $200,000)

spaceship two

Take a tour of Spaceship Two:

http://www.bbc.co.uk/news/business-12915976

Then, when you’re finished with the tour, watch the video of Spaceship Two in action:

http://www.bbc.co.uk/news/science-environment-22344398

Spaceship Two will be carried up to about 50,000 feet by a larger aircraft, which will allow the hybrid engine to save fuel and operate once it is above most of the air in our atmosphere (the larger plane will use its fuel to carry it that high).  Once at about 50,000 feet above the earth, Spaceship Two will be dropped from the carrier plane, the engine will ignite, and the aircraft/spacecraft will rocket to space, where it will spend a short time before carrying its passengers back to earth.

There is no specific date for its first trip to space, but just in case you have a few hundred thousand dollars hanging around in your pocket, here’s Virgin Galactic’s site, where you can place a down payment:

http://www.virgingalactic.com/booking/

(Now, if only the Einstein Fellowship provided this for professional development…)

Sign the Petition to Reverse the Suspension of all NASA Educational Activities

•March 25, 2013 • 3 Comments

NO MORE EDUCATION.

intrepid february 2012

On Friday, March 22, a memo went out NASA-wide, stating, in part:

“Effective immediately, all education and public outreach activities should be suspended, pending further review. In terms of scope, this includes all public engagement and outreach events, programs, activities, and products developed and implemented by Headquarters, Mission Directorates, and Centers across the Agency, including all education and public outreach efforts conducted by programs and projects.

The scope comprises activities intended to communicate, connect with, and engage a wide and diverse set of audiences to raise awareness and involvement in NASA, its goals, missions and programs, and to develop an appreciation for, exposure to, and involvement in STEM. Audiences include employees, partners, educators, students, and members of the general public. The scope encompasses, but is not limited to:

– Programs, events, and workshops.
– Permanent and traveling exhibits, signage, and other materials.
– Speeches, presentations, and appearances, with the exception of technical presentations by researchers at scientific and technical symposia.
– Video and multimedia products in development (and renewal of existing products).
– Web and social media sites in development (excludes operational sites).
– External and internal publications, with the exception of Scientific and Technical Information as defined by NPD 2200.1B.
– Any other activity whose goal is to reach out to external and internal stakeholders and the public concerning NASA, its programs, and activities.”

Read more: http://www.universetoday.com/100949/sequester-cancels-nasa-outreach/#ixzz2Ob6Oup4E

So is all NASA education cancelled for good?  No.  But forget about seeing NASA at any events, forget about NASA being at conferences like the Space Symposium, and forget about NASA developing new apps, education products, or supporting may ongoing design challenges, etc.  A few will still exist, as long as they obtain an illusive waiver that meets strict criteria.  At least for now.

What can you do?

You can sign the petition below:

https://petitions.whitehouse.gov/petition/repeal-sequesters-cuts-nasas-spending-public-outreach-and-its-stem-programs/kY7Tw85q

For those of you skeptics out there who say “Who cares? The budget is tight for everyone…we all have to cut back,” think about the damage that’s being done by cutting pretty much everything from education.  What kind of message are we sending to kids, to the public, by letting them know that education is not worth keeping?  Education is a long-haul investment, one that takes time to see the pay-off for, and one that keeps goals and dreams alive.  Is this really what we should be taking away?

Take a minute, help NASA education out, and work hard to encourage all of us to support education, ESPECIALLY when the going gets tough.

Black History Month, Ronald McNair, the Space Shuttle, and a Book

•February 24, 2013 • Leave a Comment

February is Black History month, and when we take a look at this month from the perspective many of us have today, it’s hard to imagine–or for others, to remember–that life was very different for so many people not so long ago.

In 1986, astronaut Ronald McNair was aboard the Space Shuttle Challenger when it was destroyed in our atmosphere.  He was one of the seven astronauts who lost their lives and changed many of our lives forever.  But before he became an astronaut, he grew up in a place where little black boys didn’t become astronauts…in fact, they weren’t even supposed to borrow library books.

This youtube video is a story by Ronald’s brother Carl, who told StoryCorps about Ronald when they were growing up (if you haven’t listened to StoryCorps, you should.  Stories from anyone are recorded and preserved at the Library of Congress, and each story is a shared memory about someone they knew…many times these people are relatives or spouses.  You listen to everyday people talking about everyday people, and the stories are amazing, and funny, and serious…you can go to http://www.storycorps.org to hear some of them, or to find out how to record a story of your own for the Library of Congress).

Enjoy this story, and take the time to think about how far we’ve come in 50 years, along with where we need to go from here.

 

Asteroid to Pass by Earth on Feb. 15

•February 4, 2013 • Leave a Comment

ImageOn February 15th, 2013, an asteroid will pass closer to the earth than any known asteroid has before.  Don’t worry, the asteroid, which is about 150 feet in diameter, doesn’t have a chance of striking the earth, but it will come closer than some of our satellites.  NASA has been following the asteroid, which has an orbit very similar to earth’s, and they’re excited to study it up close as it comes within 17,200 miles of the earth.  You won’t be able to see it with the naked eye, but if you have a good pair of binoculars or a telescope, you’ll get a good view as it zooms past at about 17,500 miles an hour.

The link below answers many questions about the asteroid:

http://www.nasa.gov/topics/solarsystem/features/asteroidflyby.html

Happy viewing!