Archive for the ‘satellites’ category: Page 171
Feb 2, 2017
NASA’s New Shape-Shifting Radiator Inspired by Origami
Posted by Klaus Baldauf in category: satellites
Japan’s ancient art of paper folding has inspired the design of a potentially trailblazing “smart” radiator that a NASA technologist is now developing to remove or retain heat on small satellites.
Technologist Vivek Dwivedi, who is standing in front of a sputtering reactor used to deposit vanadium-oxide onto sample substrates for testing, is collaborating with Brigham Young University researchers to develop a radiator ideal for small spacecraft.
Continue reading “NASA’s New Shape-Shifting Radiator Inspired by Origami” »
Feb 1, 2017
Origami-inspired radiator from NASA could change shape to warm or cool tiny satellites
Posted by Karen Hurst in categories: electronics, satellites
The devices we’re sending into space are getting smaller and lighter, which means there’s less room for bulky and static components. Flexibility and compactness are coming into vogue, and this prototype satellite radiator is inspired by that most compact and flexible of arts: origami.
An ordinary radiator would, of course, help dissipate heat generated by the sun or on-board electronics. But its shape and size, and therefore to a certain extent its capabilities, are set when it is manufactured.
Goddard Space Flight Center and Brigham Young University researchers are working on a radiator that can fold up or expand as needed to accelerate or slow the rate of heat dissipation as its operators see fit.
Feb 1, 2017
Space Farming: Satellite’s Greenhouses to Simulate Moon, Mars Gravity
Posted by Klaus Baldauf in categories: food, satellites
A satellite that’s scheduled to launch later this year will conduct plant-growth experiments in both lunar and Martian gravity, as a way to help prepare for future human settlement of these worlds.
The Eu: CROPIS spacecraft will rotate around its own axis in low-Earth orbit, at an altitude of over 370 miles (600 kilometers). The satellite will initially produce the gravitational force of the moon on its inside for six months, and will then replicate Martian gravity for another six months.
During this time, tomato seeds will germinate and grow into small space tomatoes; 16 onboard cameras will document the plants’ progress. [Plants in Space: Photos by Gardening Astronauts].
Jan 29, 2017
This Is How India’s Space Agency Plans to Launch a Record 104 Satellites in One Go
Posted by Karen Hurst in category: satellites
OMG! Guess Guinness Records Book will be on hand at the launch.
India’s space agency will next month attempt to launch 104 satellites from a single rocket, a mission that could land it in the record books.
The Indian Space Research Organization plans to use its workhorse, the Polar Satellite Launch Vehicle, to carry three satellites from India, and 101 smaller nano satellites from five countries—the U.S., Netherlands, Israel, Kazakhstan and Switzerland into orbit.
Jan 28, 2017
Republican Congressmen Order DARPA to Halt Construction of Space Robots
Posted by Karen Hurst in categories: government, policy, robotics/AI, satellites, space
Republican members of Congress are now ordering DARPA to end their work on Robotic Servicing of Geosynchronous Satellites. Why are they ordering them to stop? Because, according to National Space Policy guidelines, DARPA might be conducting operations that are potentially discouraging similar research in the private sector. Hmmmm :-(.
Republican congressmen orders DARPA to stop their work for in-space satellite services; DARPA refuses. — B.J. Murphy for Serious Wonder.
Jan 28, 2017
Lawmakers Call For Halt To DARPA Program: Robots Repairing Satellites
Posted by Klaus Baldauf in categories: government, policy, robotics/AI, satellites
WASHINGTON: Three influential House lawmakers have asked DARPA in a Jan. 25 letter to review a robotic space repair program to see if it violates the National Space Policy by competing with private-sector efforts and to put the program on hold until the review is complete. The National Space Policy requires “that the government not build or buy systems that “preclude, discourage or compete” with commercial systems. Orbital ATK is building a system it believes competes directly with the DARPA initiative, known as Robotic Servicing of Geosynchronous Satellites.
It’s an intriguing program. DARPA’s goal is to develop robotic systems that can fix damaged satellites 22,000 miles up. In the words of the program web page, it would be designed to “make house calls in space.”
Continue reading “Lawmakers Call For Halt To DARPA Program: Robots Repairing Satellites” »
Jan 27, 2017
GWU’s Innovations in Electric Propulsion Technology Help Vector Provide Unprecedented Access to Space
Posted by Klaus Baldauf in categories: materials, satellites
Since our launch in 2016, Vector has focused on connecting space startups and innovators with affordable and reliable space by dramatically increasing access and speed to orbit. And as a result, Vector is reshaping the multi-billion launch market. Building on over 10 years of research to develop the Vector-R launch vehicle, Vector is truly at the forefront of innovation and revolutionizing the next generation of rocket launches. George Washington University has developed ground-breaking plasma steering thrusters which will help put Vector ahead in the great “New Space” race. Our collaboration with George Washington University will help us move closer to achieving our long-term vision of furthering the technological achievements for our industry.
Through this agreement, Vector will license the plasma thruster technology created by the School of Engineering and Applied Science at George Washington University for the Vector-R launch vehicle. The technology will allow us to propel miniature satellites, which are significantly less expensive and made from common materials, and control them while in space. As part of the collaboration, Vector will develop the thruster for commercial space use, and the University will continue to develop the next generation of the technology.
Small spacecraft and satellites are extreme ly difficult to maneuver and control once in space, and George Washington University’s plasma thruster technology helps us manage this problem. The thrusters use titanium as a propellant, which is converted into a gas-like plasma to provide propulsion. The plasma then accelerates and expands into a vacuum at high velocities to produce thrust. This thrust helps the craft overcome drag and maintain the small satellite’s orbit. We plan to use the technology as part of our launch system dedicated to micro spacecraft.
Jan 20, 2017
China’s Quantum Communications Trailblazer declared Operational after Stellar Performance
Posted by Karen Hurst in categories: cybercrime/malcode, quantum physics, satellites
Nice write up on the QC news about China’s QC satellite from late Wed.
China’s Quantum Science Satellite was declared operational this week after five months of in-orbit testing, now set for a busy two-year mission demonstrating hack-proof communications by means of entangled photons as a trailblazer for what is widely considered the communications technology of the future.
The Quantum Science Satellite, nicknamed Mozi, was launched into orbit on August 15, 2016 as the world’s first dedicated quantum communications testbed, embarking on an ambitious mission dedicated to validating the principles of quantum communications across vast distances of open space.
Jan 19, 2017
Singapore’s New Nano-Satellite Doubles Orbital Time
Posted by Karen Hurst in category: satellites
https://www.youtube.com/watch?v=YPN0wzzWNUU&feature=youtu.be
Enlarge Image Singapore’s Nanyang Technological University has successfully launched a satellite from the International Space Station (ISS) for the first time. It’s a nanosatellite that deserves special attention for its new thruster technology. These new micro-thrusters allow the satellite to remain in for space twice as long as other similar satellites, according to the university. The improved thrusters could go a long way towards fighting the problem of space debris: Man-made trash such as the old satellites and spent rocket stages that create a field of debris around the earth.
https://www.cnet.com/news/singapore-launches-first-ever-sate…CAD590a51e
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