Balloons outfitted with innovative steering devices and robot probes could be the future of planetary exploration. Dr. Alexey Pankine, a fellow at the NASA Institute for Advanced Concepts (NIAC), presented an analysis of balloon applications for planetary science at the World Space Congress in Houston, Texas last month. His study, entitled Directed Aerial Robot Explorers or DARE, is funded by NIAC.
At the center of the DARE concept are balloons that can float in planetary atmospheres for many days. Balloons have long been recognized as low-cost observational platforms and are routinely used in observations of the Earth’s atmosphere. In 1984, two balloons were successfully deployed in the atmosphere of Venus for a short mission. However, what has restrained the wider use of balloons in planetary exploration was the inability to control their paths in strong atmospheric winds. Attaching an engine to a balloon would convert it into an airship and make it too heavy, too power dependent and too expensive to send to another planet or high into the atmosphere.
Faced with this problem, Global Aerospace Corporation has proposed to use an innovative device called the StratoSail® that allows the user to control the path of a planetary balloon. The device is essentially a wing that hangs on a long tether (several kilometers) below the balloon. Strong winds and denser atmosphere at the wing altitude create a sideways lifting force that pulls the entire system across the winds.
Alexey A. Pankine | EurekAlert!
Improved monitoring of coral reefs with the HyperDiver
24.08.2017 | Max-Planck-Institut für marine Mikrobiologie
Hidden river once flowed beneath Antarctic ice
22.08.2017 | Rice University
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
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23.08.2017 | Physics and Astronomy