Washington: A team of NASA engineers has inched closer to building a completely 3D printed, high-performance rocket engine by manufacturing complex engine parts; then test firing them together with cryogenic liquid hydrogen and oxygen to produce 20,000 pounds of thrust.
The team from NASA’s Marshall Space Flight Centre in Huntsville, Alabama, tested 3D printed rocket engine parts connected together in the same fashion that they would work in a rocket engine.
The parts performance rivalled that of traditionally manufactured engine parts. During six separate tests, the engine generated up to 20,000 pounds of thrust.
“We manufactured and then tested about 75 percent of the parts needed to build a 3D printed rocket engine,” said Elizabeth Robertson, project manager at NASA.
“By testing the turbo pumps, injectors and valves together, we’ve shown that it would be possible to build a 3D printed engine for multiple purposes such as landers, in-space propulsion or rocket engine upper stages,” Robertson explained in a statement.
Over the last three years, the Marshall team has been working with various vendors to make 3D printed parts, such as turbopumps and injectors, and test them individually.
To test them together, they connected the parts so that they work the same as they do in a real engine.
“In engineering language, this is called a breadboard engine,” explained Nick Case, testing lead for the effort.
Seven tests were performed with the longest tests lasting 10 seconds.
During the tests, the 3D printed demonstrator engine experienced all the extreme environments inside a flight rocket engine where fuel is burned at greater than 3,315 degrees Celsius to produce thrust.
“These NASA tests drive drown the costs and risks associated with using additive manufacturing, which is a relatively new process for making aerospace quality parts,” Robertson noted.
“This new manufacturing process has opened the design space and allowed for part geometries that would be impossible with traditional machining or casting methods,” added David Eddleman, one of Marshall’s propulsion designers.
Additive manufacturing or 3D printing is a key technology for enhancing space vehicle designs and manufacturing and enabling more affordable exploration missions.(IANS)(image courtesy: NASA)
Kalpana Chawla continues to be an inspirational force for youth all-over, especially girls
Kalpana Chawla earned a doctorate in aerospace engineering from the University of Colorado in 1988
In the year 2000, Chawla was selected for her second voyage into space, serving again as a mission specialist on STS-107
Kalpana Chawala is one of the inspiring personality and an Ideal for numerous people, it’s been 18 years since her passing, but Indo-American astronaut, Kalpana Chawla continues to be an inspirational force for youth all-over, especially girls. Born in Karnal-Punjab, Kalpana overcame all odds and fulfilled her dream of reaching for the stars.
Kalpana achieved a grade in aeronautical engineering from Punjab Engineering College before immigrating to the United States and becoming a naturalized citizen in the 1980s. She earned a doctorate in aerospace engineering from the University of Colorado in 1988, having previously obtained her master’s degree from the University of Texas. She began working at NASA’s Ames Research Center the same year, working on power-lift computational fluid dynamics.
In 1994, Kalpana was selected as an astronaut candidate. She was appointed as a crew representative for the Astronaut Office EVA/Robotics and Computer Branches after a year of training, where she worked with Robotic Situational Awareness Displays and tested software for the space shuttles.
kalpana chawala’s Death was a very uncertain demise of one of the finest astronaut the world ever had.
Early life: Kalpana Chawala was born on March 17, 1962, in Karnal, Haryana. Born into a middle-class family, she completed her schooling from Tagore Baal Niketan Senior Secondary School, Karnal and her B.Tech in Aeronautical Engineering from Punjab Engineering College at Chandigarh, India in 1982.
Kalpana Chawala was the youngest of four children in her family. The forename Kalpana denotes “idea” or “imagination.” Her full name is pronounced CULL-puh-na CHAV-la, though she often went by the nickname K.C.
Journey in the United States: To fulfil her desire of becoming an astronaut, Kalpana aimed to join NASA and moved to the United States in 1982. She obtained a Master’s degree in Aerospace Engineering from the University of Texas at Arlington in 1984 and a second Master’s in 1986. She then earned a doctorate in aerospace engineering from the University of Colorado at Boulder.
Wedding bells: There’s always time for romance. In 1983, Kalpana tied the knot with Jean-Pierre Harrison, a flying instructor and an aviation author.
Work at NASA: In 1988, Kalpana’s dream of joining NASA finally came true. For the position of Vice President of Overset Methods, Kalpana Chawala was appointed at NASA Research Center and was later assigned to do Computational fluid dynamics (CFD) research on Vertical/Short Takeoff and Landing concepts.
Kalpana’s dream break to fly in space came in November 1997, aboard the space shuttle Columbia on flight STS-87. The space shuttle made 252 orbits of the Earth in just over two weeks. The space aircraft completed a number of experiments and observing tools on its trip, including a Spartan satellite, which Chawla deployed from the shuttle. The satellite, which studied the outer layer of the sun, malfunctioned due to software errors, and two other astronauts from the shuttle had to perform a spacewalk to recapture it.
In the year 2000, Chawala was selected for her second voyage into space, serving again as a mission specialist on STS-107. The mission was delayed several times and finally launched in 2003. Over the course of the 16-day flight, the crew completed more than 80 experiments.
On the morning of Feb. 1, 2003, the space shuttle returned to Earth, intending to land at Kennedy Space Center. At launch, a briefcase-sized piece of insulation had broken off and damaged the thermal protection system of the shuttle’s wing, the shield that protects it from heat during re-entry. When the aircraft moved through the atmosphere, hot gas streaming into the wing caused it to break up. The unstable craft rolled and bucked, pitching the astronauts about. Less than a minute passed before the ship depressurized killing the crew. The shuttle broke up over Texas and Louisiana before plunging into the ground. This incident was the second major disaster for the space shuttle program, following the 1986 explosion of the shuttle Challenge.
In the disastrous damage of the space shuttle, Columbia took the lives of seven astronauts. One of those, Kalpana Chawla, was the first Indian-born woman in space.