Members of Utah State University’s Get Away Special “GAS” student team burst into an exuberant chorus of shouts, oohs and aahs as they viewed video of their painstakingly constructed nucleate boiling experiment successfully performing in zero gravity. Their findings contribute to thermal management knowledge that could benefit the development of space vehicles for long-duration travel.
Gathered around a laptop in a sweltering hangar June 23 at Houston’s Ellington Field, the Aggies watched a tiny platinum wire in a clear, water-filled container light up with bubbles that, sans gravity, dispersed not up but in random directions. The footage had been captured minutes before during microgravity flight aboard a specially modified, NASA-contracted 727, one of the agency’s infamous ‘Vomit Comets.’
Still dizzy from a roller coaster ride of steep climbs and free falls from 32,000 feet, team member Frank McCown marveled at the results.
“The flight was awesome, the experiment went well and I’m really excited that we got good, usable data,” said the undergraduate computer science researcher.
The students’ celebration was the culmination of more than a year of steady toil, including late nights and weekends, leading up to a week and a half of intensive flight training at Johnson Space Center. The team of nine — McCown and fellow flyers Andrew Fassmann, Justin Koeln, Travyn Mapes and Troy Munro, along with ground crew members Phillip Anderson, Stephanie Peterson, Rob Barnett and Cameron Peterson —was among 14 university teams that ventured to Houston June 16-27 after being awarded a coveted spot with NASA’s Reduced Gravity Student Flight Opportunities Program, also known as “Microgravity University.”
“It felt pretty darn good to see that data and know that our experiment had worked,” said Anderson, a graduate student in aerospace engineering and coordinator of USU’s GAS team. “All of our hard work in getting to Houston was not in vain.”
Anderson had his doubts. On the previous day, USU’s first team of flyers encountered a vexing electrical problem with the experiment’s interface to the aircraft that caused their project to grind to a stubborn halt.
“We had a few good runs in a row and the power died soon after,” said Fassmann, an undergraduate researcher majoring in mechanical and aerospace engineering. “Because the power died, we lost all our camera data.”
While struggling with the power, Fassmann and teammate Troy Munro scrambled to retrieve several of the experiment’s fluid chambers that accidentally ‘escaped’ in zero gravity, while coping with the effects of repeated, brain and gut-rattling shifts from hypergravity to weightlessness.
The two recounted the experience with laughter, though Munro admitted that trying to throw up in a bag in zero gravity was “not a fun experience.”
“Zero-g is the strangest sensation,” he said. “It's really very difficult to describe and hard to believe that you can’t tell which way is up.”
NASA’s microgravity aircraft, which the agency prefers to refer to as “Weightless Wonders” rather than their better known monikers, follow an elliptic flight path relative to the center of the Earth that literally propels the planes and their occupants into orbit. In a series of parabolas, pilots gun the engines into 45-degree climbs and, at the top of each arc, reduce thrust, point the nose down and fall.
During each climb, passengers, instructed to lie on the floor of the plane or sit leaning against the cabin’s walls, experience hypergravity, more than twice their body weight. As the plane reaches the top of the arc, passengers begin to float in mid-air, which lasts about 25 seconds. With a shout of “Coming out – feet down!” from a NASA flight coordinator, passengers resume their hypergravity positions and await the next parabola.
On separate two-hour flights over the Gulf of Mexico, two Aggie teams each experienced 30 zero-g parabolas, one lunar-g parabola and one Mars-g parabola.
USU’s experiment, called “Follow-up Nucleate Boiling On-flight Experiment” or FUNBOE, builds on a previous USU GAS experiment flown aboard Space Shuttle Endeavour in 2001. Developed by USU’s then-GAS team and students from Utah’s Box Elder High School, the original experiment explored the boiling dynamics of water in microgravity.
“We analyzed data from the initial experiment and determined that more research is needed,” said Koeln, 2010 USU Goldwater Scholar and FUNBOE leader. “Nucleate boiling would be ideal for thermal management systems but its dynamics in microgravity are not well understood. If we can prove that boiling water in space is practical and safe, we’re on our way to developing more efficient energy systems for long-duration space travel.”
Koeln and his teammates agree that providing robust, efficient and reliable thermal management for space exploration vehicles and instruments is essential for ambitious plans to travel to Mars and beyond.
“Our video from the on-flight experiment shows that the bubbles dispersed and didn’t stay on the wire getting hotter and hotter,” he said. “That’s significant. It indicates how water boils without buoyancy which could be revolutionary to manned space programs, satellites and deep space probes.”
From here, the USU students will further analyze the experiment’s data, draft a report for NASA and prepare varied research papers and posters from their experience. In addition, the team plans to submit a proposal for a revised experiment for next year’s Microgravity University. The team will also continue its busy schedule of outreach presentations to K-12 students.
“We learned a lot from this experience and we’re excited to share it with the scientific community,” Koeln said. “We got great data that no one else has ever gotten before.”
To learn more about the Aggies’ adventure and view additional photos and video footage, visit the team’s Facebook page, “
USU Get Away Special Team,” and the team
website.
The CANADIAN border crossing! Way intimidating. Sometimes, I didn't know if we would get across. Thank goodness we didn't bring any produce, or we could have been taken into custody and questioned. Since Andrew and I are so kick butt, just like Jason Bourne, we could have handled it. I was a little angry cuz they didn't stamp my passport. I have no proof that I'm an international traveler. :(
But it's OK cuz I have this picture that shows my enthusiasm for being an international world traveler! I'm screaming, "CANADA!!!!"
We went to the Vancouver Temple, and it was dedicated in May of this year. It was really little, but so pretty inside. I'm glad we could go to the Temple. It's free. It's also really in Willougby. We tried to only do free things in Canada.
Totem Poles at Stanley Park in Vancouver - also a free activity. Parking was not free, though. I hope that if there is another Bourne movie, they include CANADA.
Vancouver, CANADA
Me and some bridge.
There was a cultural demonstration from some Aboriginals in the Park. It was pretty cool and made me think of when I went to a Pow Wow. Except, these guys are definitely not Navajo. They live in CANADA!
Hydrangeas the color of the ones from my wedding.
Beautiful roses.
Andrew's beautiful and artistic photo of pink hydrangeas.
Andrew drinking CANADIAN Dr. Pepper. Apparently, it's way better cuz it doesn't have High-Fructose Corn Syrup in it. In CANADA they use real sugar.
At the end of the day, we were way happy to get back to the USA. Hooray for America! There are much better roads here than in CANADA.
Jumping off of a log that looks like a diving board. I didn't know it was so thin until after and I looked at it.
We made it!
Our chipmunk friend to whom we fed cherries to.
Andrew foolishly read a fishing report on the lake before we went. There were many fish surfacing, but he doesn't have a pole or a license right now. The fish were taunting him: "Ha ha, you can't get us cuz you don't have a fishing pole!" He thought it was quite rude of the fish.
Serene, huh?
See the really pointy mountain? I told Andrew that if I were a tree, I would want to live on that pointy part. He pointed out to me that, as a tree, I wouldn't have a choice in where I lived. But it still would have been awesome.
Looking ponderous over the hugeness of the mountain we just climbed.
I had to go to the bathroom and this was the toilet of serenity that I used.
Mt. Rainier and the raging White River, which is white in color from the gray mud, I guess. It is entirely from snowmelt under the glacier.
Yippee! We reached the beautiful glacier after climbing over a lot of snow.
Andrew
Me
Us
We then drove to Sunrise Point and think this might be a view from a very different angle of where we hiked to.
Mt. Rainier from Sunrise Point.
Here, our guide Joe helps Andrew with his flies. We liked talking with Joe. He was a funny guy who was really passionate about fly fishing. He was really good at casting. I picked it up quickly but I think I need to practice.
The Yakima was a beautiful river that flowed east! For some reason, that surprised me. Probably cuz all the rivers I have know flow west. It was odd cuz we are on the west side of the continental divide, so I assumed they all flow west. The Yakima flows off the east side of the Cascades and eventually joins up with the Columbia, which does flow west.
Andrew was a better fly fisher than I. He was a little frustrated though cuz his wrist has been bothering him for a few days and it became really painful for him during the last legs of our journey.
And here is a picture of me so you know I was really on the trip. I am wearing my dead sexy waders. I also love that you can see my arms and the camera in my sunglasses.
