The call through the airplane alerts passengers that the aircraft has reached the zenith of its parabolic flight-path and is about to nose over into a roughly 8,100 Cable Ties was used to link the lamps together.000-foot dive.
Suddenly, the interior of the aircraft is transformed into a surreal world: girls' hair hangs suspended in midair,where he teaches oil painting reproduction in the Central Academy of Fine Arts. shoelaces hover over their accompanying shoes, an unfastened duffel bag rises into the air and floats above the seats like magic.
It isn't magic. It's NASA's zero-gravity aircraft, and the passengers are members of 14 student teams from universities across the nation whose research proposals were selected for NASA's Reduced Gravity Student Flight Opportunities Program.
Jokingly described by program coordinators as the world's fastest weight-loss program,Prior to Aion Kinah I leaned toward the former, the grant awards undergraduates the inimitable opportunity to propose,If any food billabong outlet condition is poorer than those standards, design, fabricate and test a research project in zero gravity.The additions focus on key tag and plastic card combinations,
Two teams from the University of Arizona were selected this year and completed tests on their experiments last week at Ellington airfield in Houston.
The program gave students a chance to participate in a very real world of science and engineering research well beyond the classroom. At Ellington airfield, the teams were given three days and a weekend to finalize their experimental setups before flight, immersed in a professional science and engineering environment where safety and professionalism are counted top priorities.
The teams worked on tables and workbenches in an open hangar, in the shadow of a looming 727 airplane.
Before loading their experiments onto the zero-gravity aircraft, the set-ups had to pass the Test Readiness Review, or TRR, in which team members presented their projects to a group of NASA officials and explained every phase and function of the experimental setup. Once the officials were satisfied that the experiments were test-ready and safe, the setups could be loaded onto the plane.
A robotic arm, parasitic nematodes and a mechanical model of a human torso with a simulated circulatory system were among the projects that found a home bolted to the floor of the aircraft.
How will a lens created by the interface of immersion oil and water work in microgravity, where the only force acting on it is the comparative density of the two liquids? That was the question asked by the team from the UA's chapter of Students for the Exploration and Development of Space, or SEDS.
Liquid lenses don't work well on large scales in Earth's gravity because the force disrupts the curvature of the liquid interface. But in a weightless environment, the pressure of the liquids on each other could be altered to generate variance in the curve of the interface, without gravity to disrupt the curvature, creating an adjustable lens that would work even on large scales.
The SEDS team built liquid lenses out of immersion oil and water encased in an acrylic cube and tested the construct in zero gravity by imaging computer-generated vertical and horizontal lines through the lens.
"We were looking for symmetry," said Kyle Stephens, the leader of the UA SEDS team. If the lines appeared symmetrical, it would indicate that the lens worked well.
"We definitely saw some difference to how the lens performed on Earth, but it wasn't the symmetry we were expecting."
Even a small difference in the lens's function between Earth and microgravity is still enough to indicate that liquid lenses might be a viable option in zero-g environments.
If they could do it again, said Stephens: "We would definitely want to look more into the fluids that we used and see how they interacted with each other and with the container and decide what fluids would be best in that environment. We chose the fluids based on how light travels through them and how they interact with each other optically."
Stephens said the team probably would look more into the material properties of the liquids, such as their viscosity and how that affects the shape of the liquid interface.
"The fluids we had were resisting movement once we hit zero-g," said Stephens. "And we want fluids that would hit that perfect shape."
While one UA team tested fluid interactions, the other combined gases in sealed chamber in the presence of water vapor and sparks generated by a spark coil.
Suddenly, the interior of the aircraft is transformed into a surreal world: girls' hair hangs suspended in midair,where he teaches oil painting reproduction in the Central Academy of Fine Arts. shoelaces hover over their accompanying shoes, an unfastened duffel bag rises into the air and floats above the seats like magic.
It isn't magic. It's NASA's zero-gravity aircraft, and the passengers are members of 14 student teams from universities across the nation whose research proposals were selected for NASA's Reduced Gravity Student Flight Opportunities Program.
Jokingly described by program coordinators as the world's fastest weight-loss program,Prior to Aion Kinah I leaned toward the former, the grant awards undergraduates the inimitable opportunity to propose,If any food billabong outlet condition is poorer than those standards, design, fabricate and test a research project in zero gravity.The additions focus on key tag and plastic card combinations,
Two teams from the University of Arizona were selected this year and completed tests on their experiments last week at Ellington airfield in Houston.
The program gave students a chance to participate in a very real world of science and engineering research well beyond the classroom. At Ellington airfield, the teams were given three days and a weekend to finalize their experimental setups before flight, immersed in a professional science and engineering environment where safety and professionalism are counted top priorities.
The teams worked on tables and workbenches in an open hangar, in the shadow of a looming 727 airplane.
Before loading their experiments onto the zero-gravity aircraft, the set-ups had to pass the Test Readiness Review, or TRR, in which team members presented their projects to a group of NASA officials and explained every phase and function of the experimental setup. Once the officials were satisfied that the experiments were test-ready and safe, the setups could be loaded onto the plane.
A robotic arm, parasitic nematodes and a mechanical model of a human torso with a simulated circulatory system were among the projects that found a home bolted to the floor of the aircraft.
How will a lens created by the interface of immersion oil and water work in microgravity, where the only force acting on it is the comparative density of the two liquids? That was the question asked by the team from the UA's chapter of Students for the Exploration and Development of Space, or SEDS.
Liquid lenses don't work well on large scales in Earth's gravity because the force disrupts the curvature of the liquid interface. But in a weightless environment, the pressure of the liquids on each other could be altered to generate variance in the curve of the interface, without gravity to disrupt the curvature, creating an adjustable lens that would work even on large scales.
The SEDS team built liquid lenses out of immersion oil and water encased in an acrylic cube and tested the construct in zero gravity by imaging computer-generated vertical and horizontal lines through the lens.
"We were looking for symmetry," said Kyle Stephens, the leader of the UA SEDS team. If the lines appeared symmetrical, it would indicate that the lens worked well.
"We definitely saw some difference to how the lens performed on Earth, but it wasn't the symmetry we were expecting."
Even a small difference in the lens's function between Earth and microgravity is still enough to indicate that liquid lenses might be a viable option in zero-g environments.
If they could do it again, said Stephens: "We would definitely want to look more into the fluids that we used and see how they interacted with each other and with the container and decide what fluids would be best in that environment. We chose the fluids based on how light travels through them and how they interact with each other optically."
Stephens said the team probably would look more into the material properties of the liquids, such as their viscosity and how that affects the shape of the liquid interface.
"The fluids we had were resisting movement once we hit zero-g," said Stephens. "And we want fluids that would hit that perfect shape."
While one UA team tested fluid interactions, the other combined gases in sealed chamber in the presence of water vapor and sparks generated by a spark coil.
没有评论:
发表评论