NASA Ignites Fire Experiment Aboard Space Cargo Ship - ​Saffire-I Mission Updates

NASA - ​Saffire-I Mission patch.

June 23, 2016

Understanding how fire spreads in a microgravity environment is critical to the safety of astronauts who live and work in space. And while NASA has conducted studies aboard the space shuttle and International Space Station, risks to the crew have forced these experiments to be limited in size and scope. Fire safety will be a critical element as NASA progresses on the journey to Mars and begins to investigate deep space habitats for long duration missions.

Image above: The Saffire-I hardware is shown strapped into the Orbital ATK Cygnus Pressurized Cargo Module. Image Credit: NASA.

The first Spacecraft Fire Experiment (Saffire-I) was the beginning of a three-part experiment to be conducted over the course of three flights of Orbital ATK’s Cygnus vehicle to investigate large-scale flame spread and material flammability limits in long duration microgravity.

The Saffire-I experiment enclosure was approximately half a meter wide by 1 meter deep by 1.3 meter long and consisted of a flow duct and avionics bay. Inside the flow duct, the cotton-fiberglass blend burn sample measured 0.4 m wide by 1 meter long. When commanded by Orbital ATK and Saffire ground controllers operating from Dulles, Virginia, it was ignited by a hot wire. Previous to this experiment, the largest fire experiment that had been conducted in space is about the size of an index card.

Saffire-I Experiment Burns in Space

Video above: Understanding how fire spreads in a microgravity environment is critical to the safety of astronauts who are on the #JourneyToMars. This compilation of images shows Saffire-I, an experiment that burned a cotton-fiberglass blend of material to see how it behaved in space. The green LED light flashes were used to show contrast to observe smoke patterns as the material was burning. Image Credit: NASA.

After the experiment was ignited, the Cygnus continued to orbit Earth for six days as it transmitted high-resolution imagery and data from the Saffire experiment. Following complete data transmission, the Cygnus spacecraft completed its mission with a destructive entry into the Earth’s atmosphere.

Animation above: The animated image above shows the Saffire-1 sample burning aboard the Cygnus spacecraft on June 14, 2016. Animation Credit: NASA.

​Saffire-I launched inside the Cygnus spacecraft atop the United Launch Alliance (ULA) Atlas V launch vehicle on March 22, 2016. Space Station Crew members successfully grappled Cygnus to the space station on March 26. The Saffire experiments were developed at NASA Glenn Research Center by the Spacecraft Fire Safety Demonstration Project and sponsored by the Advanced Exploration Systems (AES) Division of NASA’s Human Exploration and Operations Mission Directorate. AES pioneers new approaches for rapidly developing prototype systems, demonstrating key capabilities, and validating operational concepts for future human missions beyond low-Earth orbit. AES activities are uniquely related to crew safety and mission operations in deep space, with a strong focus on future vehicle development.

Related article: 

NASA Ignites Fire Experiment Aboard Space Cargo Ship
http://orbiterchspacenews.blogspot.ch/2016/06/nasa-ignites-fire-experiment-aboard.html

Related links:

Spacecraft Fire Experiment (Saffire-I): http://www.nasa.gov/feature/fire-in-the-hole-studying-how-flames-grow-in-space

Deep space habitats: https://www.nasa.gov/content/deep-space-habitation

Commercial Resupply: http://www.nasa.gov/mission_pages/station/structure/launch/index.html

Cygnus: http://www.nasa.gov/mission_pages/station/structure/launch/orbital.html

Living in Space: https://www.nasa.gov/topics/technology/living-in-space/index.html

Images (mentioned), Video (mentioned), Text, Credits: NASA/Erin Mahoney.

Best regards, Orbiter.ch

NASA’s Restore-L Mission to Refuel Landsat 7, Demonstrate Crosscutting Technologies

NASA logo.

June 23, 2016

Disruptive technologies have often changed the course of history, breaking the status quo and unlocking possibilities that have yet to be imagined. Building on a history of upgrading and maintaining assets in space, NASA is developing a new capability while creating a paradigm-shift: robotic satellite servicing. 

In May, NASA officially moved forward with plans to execute the ambitious, technology-rich Restore-L mission, an endeavor to launch a robotic spacecraft in 2020 to refuel a live satellite. The mission – the first of its kind in low-Earth orbit - will demonstrate that a carefully curated suite of satellite-servicing technologies are fully operational. The current candidate client for this venture is Landsat 7, a government-owned satellite in low-Earth orbit.

Image above: The Restore-L servicer extends its robotic arm to grasp and refuel a client satellite on orbit. Artist’s rendering. Image Credit: NASA.

Beyond refueling, the Restore-L mission also carries another, weighty objective: to test other crosscutting technologies that have applications for several critical upcoming NASA missions.  As the Restore-L servicer rendezvous with, grasps, refuels, and relocates a client spacecraft, NASA will be checking important items off of its technology checklist that puts humans closer to Mars exploration. 

Restore-L technologies include an autonomous relative navigation system with supporting avionics, and dexterous robotic arms and software. The suite is completed by a tool drive that supports a collection of sophisticated robotic tools for robotic spacecraft refueling, and a propellant transfer system that delivers measured amounts of fuel at the proper temperature, rate, and pressure.

Future candidate applications for individual Restore-L technologies include on-orbit manufacturing and assembly, propellant depots, observatory servicing, and orbital debris management. NASA is also directly applying several Restore-L technologies to the Asteroid Redirect Mission.

The robotic vehicle of NASA’s Asteroid Redirect Mission directly leverages Restore-L’s autonomous rendezvous system, avionics, dexterous robotics and software, and tool drive and other systems. This mission, along with the Wide-Field Infrared Survey Telescope (WFIRST) observatory, is being designed to be refuelable.

NASA's second, equally important objective for Restore-L is to infuse its technologies to domestic commercial entities to help jumpstart a new, competitive industry in robotic satellite servicing, an area ripe with possibility.

"Restore-L effectively breaks the paradigm of one-and-done spacecraft" says Frank Cepollina, veteran leader of the five crewed servicing missions to the Hubble Space Telescope. Cepollina now serves as the associate director of the Satellite Servicing Capabilities Office (SSCO), the team that first conceived of the Restore-L concept and developed its technology portfolio.

"It introduces new ways to robotically manage, upgrade and prolong the lifespans of our costly orbiting national assets. By doing so, Restore-L opens up expanded options for more resilient, efficient and cost-effective operations in space," says Cepollina.

Image above: An engineering design unit of the NASA Servicing Arm, which will be used for the Restore-L mission, stands in the Robotics Operations Center at NASA’s Goddard Space Flight Center. Image Credits: NASA/Chris Gunn.

Currently, spacecraft launch to space with a finite amount of fuel, their lifespans restricted by the amount of propellant within their metal spacecraft buses at launch. A refueling capability in space, offered by future propellant-delivery spacecraft similar to Restore-L, could provide satellite owners the ability to manage, maintain, and save their most valuable assets in space. 

American industry appears eager to offer such services and has expressed strong interest in this burgeoning field. NASA's transfer of Restore-L technologies to interested domestic entities could help spur the arrival of such commercial life extension and repair offerings. The Restore-L mission could also help decrease the risk for future servicing ventures and establish a global precedence for safe rendezvous operations in orbit.

Restore-L’s technologies are foundational for other ambitious objectives beyond refueling. “You cannot entirely forecast how the aerospace community will run with new, capability-building servicing technologies, but we can predict likely short-term innovations,” says Benjamin Reed, deputy project manager for SSCO.

"With robotic servicing on the table, satellite owners can extend the lifespan of satellites that are running low on fuel, reaping additional years of service – and revenue – from their initial investment. If a solar array or a communications antenna fails to deploy, a servicer with inspection cameras and the right repair tools could help recover the asset that otherwise would have been lost. The loss of an anticipated revenue or data stream can be devastating,” Reed says.

Servicing capabilities could help satellite owners better manage their space assets in innovative ways. This could include launching a spacecraft with a half-empty fuel tank and allotting the saved weight to mission-specific instruments. “Dependable robotic satellite servicing unlocks countless opportunities,” Reed says.

“NASA’s Space Technology Mission Directorate rapidly develops, demonstrates, and infuses revolutionary, high-payoff technologies – Restore-L embodies these goals and we look forward to realizing its potential,” says Jim Reuter, deputy associate administrator for programs in STMD.

For more information about NASA’s Space Technology Mission Directorate, visit: http://www.nasa.gov/spacetech

Related links:

Restore-L mission: http://ssco.gsfc.nasa.gov/restore-L.html

Technology Demonstration: http://www.nasa.gov/mission_pages/tdm/main/

Landsat 7: http://landsat.usgs.gov/

Asteroid Redirect Mission: https://www.nasa.gov/content/what-is-nasa-s-asteroid-redirect-mission/

Wide-Field Infrared Survey Telescope (WFIRST): http://wfirst.gsfc.nasa.gov/

Servicing missions to the Hubble Space Telescope: http://www.nasa.gov/mission_pages/hubble/servicing/index.html

Satellite Servicing Capabilities Office (SSCO): http://ssco.gsfc.nasa.gov/

Images (mentioned), Text, Credits: NASA’s Goddard Space Flight Center/Adrienne Alessandro/Loura Hall.

Greetings, Orbiter.ch

A ‘Super Grand Canyon’ on Pluto’s Moon Charon

NASA - New Horizons Mission logo.

June 23, 2016

Pluto’s largest moon, Charon, is home to an unusual canyon system that’s far longer and deeper than the Grand Canyon.

The inset above magnifies a portion of the eastern limb in the global view of Charon at left, imaged by NASA’s New Horizons spacecraft several hours before its closest approach on July 14, 2015.  A deep canyon informally named Argo Chasma is seen grazing the limb. The section of it seen here measures approximately 185 miles (300 kilometers) long. As far as New Horizons scientists can tell, Argo’s total length is approximately 430 miles (700 kilometers) long – for comparison, Arizona’s Grand Canyon is 280 miles (450 kilometers) long.

At this fortuitous viewing angle the canyon is seen edge-on, and at the northern end of the canyon its depth can be easily gauged.  Based on this and other images taken around the same time, New Horizons scientists estimate Argo Chasma to be as deep as 5.5 miles (9 kilometers), which is more than five times the depth of the Grand Canyon. There appear to be locations along the canyon’s length where sheer cliffs reaching several miles high occur, and which could potentially rival Verona Rupes on Uranus’ moon Miranda (which is at least 3 miles, or 5 kilometers, high) for the title of tallest known cliff face in the solar system.

The image was obtained by New Horizons’ Long Range Reconnaissance Imager (LORRI) at a resolution of approximately 1.45 miles (2.33 kilometers) per pixel.  It was taken at a range of approximately 289,000 miles (466,000 kilometers) from Charon, 9 hours and 22 minutes before New Horizons’ closest approach to Charon on July 14, 2015.

For more information about New Horizons, visit: http://www.nasa.gov/mission_pages/newhorizons/main/index.html

Image, Text, Credits: Credits: NASA/JHUAPL/SwRI/Bill Keeter.

Greetings, Orbiter.ch

Hubble Imagery Confirms New Dark Spot on Neptune

NASA - Hubble Space Telescope patch.

June 23, 2016

Image above: Hubble Sees New Dark Spot on Neptune. Image Credits: NASA, ESA, and M.H. Wong and J. Tollefson (UC Berkeley).

New images obtained on May 16, 2016, by NASA's Hubble Space Telescope confirm the presence of a dark vortex in the atmosphere of Neptune. Though similar features were seen during the Voyager 2 flyby of Neptune in 1989 and by the Hubble Space Telescope in 1994, this vortex is the first one observed on Neptune in the 21st century.

The discovery was announced on May 17, 2016, in a Central Bureau for Astronomical Telegrams (CBAT) electronic telegram by University of California at Berkeley research astronomer Mike Wong, who led the team that analyzed the Hubble data.

Neptune's dark vortices are high-pressure systems and are usually accompanied by bright "companion clouds," which are also now visible on the distant planet. The bright clouds form when the flow of ambient air is perturbed and diverted upward over the dark vortex, causing gases to likely freeze into methane ice crystals.

"Dark vortices coast through the atmosphere like huge, lens-shaped gaseous mountains," Wong said. "And the companion clouds are similar to so-called orographic clouds that appear as pancake-shaped features lingering over mountains on Earth."

Beginning in July 2015, bright clouds were again seen on Neptune by several observers, from amateurs to astronomers at the W. M. Keck Observatory in Hawaii. Astronomers suspected that these clouds might be bright companion clouds following an unseen dark vortex. Neptune's dark vortices are typically only seen at blue wavelengths, and only Hubble has the high resolution required for seeing them on distant Neptune.

Image above: This new Hubble Space Telescope image confirms the presence of a dark vortex in the atmosphere of Neptune. The full visible-light image at left shows that the dark feature resides near and below a patch of bright clouds in the planet's southern hemisphere. The full-color image at top right is a close-up of the complex feature. The vortex is a high-pressure system. The image at bottom right shows that the vortex is best seen at blue wavelengths Image Credits: NASA, ESA, and M.H. Wong and J. Tollefson (UC Berkeley).

In September 2015, the Outer Planet Atmospheres Legacy (OPAL) program, a long-term Hubble Space Telescope project that annually captures global maps of the outer planets, revealed a dark spot close to the location of the bright clouds, which had been tracked from the ground. By viewing the vortex a second time, the new Hubble images confirm that OPAL really detected a long-lived feature. The new data enabled the team to create a higher-quality map of the vortex and its surroundings.

Neptune's dark vortices have exhibited surprising diversity over the years, in terms of size, shape, and stability (they meander in latitude, and sometimes speed up or slow down). They also come and go on much shorter timescales compared to similar anticyclones seen on Jupiter; large storms on Jupiter evolve over decades.

Planetary astronomers hope to better understand how dark vortices originate, what controls their drifts and oscillations, how they interact with the environment, and how they eventually dissipate, according to UC Berkeley doctoral student Joshua Tollefson, who was recently awarded a prestigious NASA Earth and Space Science Fellowship to study Neptune's atmosphere. Measuring the evolution of the new dark vortex will extend knowledge of both the dark vortices themselves, as well as the structure and dynamics of the surrounding atmosphere.

Hubble orbiting Earth

The team, led by Wong, also included the OPAL team (Wong, Amy Simon, and Glenn Orton), UC Berkeley collaborators (Imke de Pater, Joshua Tollefson, and Katherine de Kleer), Heidi Hammel (AURA), Statia Luszcz-Cook (AMNH), Ricardo Hueso and Agustin Sánchez-Lavega (Universidad del Pais Vasco), Marc Delcroix (Société Astronomique de France), Larry Sromovsky and Patrick Fry (University of Wisconsin), and Christoph Baranec (University of Hawaii).

For more information about the Hubble Space Telescope, visit:

http://hubblesite.org/
http://www.nasa.gov/hubble
https://www.spacetelescope.org/

Images (mentioned), Text, Credits: NASA/Ashley Morrow/Space Telescope Science Institute/Donna Weaver/Ray Villard/University of California/Robert Sanders/Mike Wong/Video: European Space Agency (ESA).

Greetings, Orbiter.ch

Successful First Observations of Galactic Centre with GRAVITY

ESO - European Southern Observatory logo.

23 June 2016

Image above: Artist’s impression of the star S2 passing very close to the supermassive black hole at the centre of the Milky Way.

A European team of astronomers have used the new GRAVITY instrument at ESO’s Very Large Telescope to obtain exciting observations of the centre of the Milky Way by combining light from all four of the 8.2-metre Unit Telescopes for the first time. These results provide a taste of the groundbreaking science that GRAVITY will produce as it probes the extremely strong gravitational fields close to the central supermassive black hole and tests Einstein’s general relativity.

The GRAVITY instrument is now operating with the four 8.2-metre Unit Telescopes of ESO’s Very Large Telescope (VLT), and even from early test results it is already clear that it will soon be producing world-class science.

The centre of the Milky Way

GRAVITY is part of the VLT Interferometer. By combining light from the four telescopes it can achieve the same spatial resolution and precision in measuring positions as a telescope of up to 130 metres in diameter. The corresponding gains in resolving power and positional accuracy — a factor of 15 over the individual 8.2-metre VLT Unit Telescopes — will enable GRAVITY to make amazingly accurate measurements of astronomical objects.

One of GRAVITY’s primary goals is to make detailed observations of the surroundings of the 4 million solar mass black hole at the very centre of the Milky Way [1]. Although the position and mass of the black hole have been known since 2002, by making precision measurements of the motions of stars orbiting it, GRAVITY will allow astronomers to probe the gravitational field around the black hole in unprecedented detail, providing a unique test of Einstein’s general theory of relativity.

Video above: Artist’s impression of the star S2 passing very close to the supermassive black hole at the centre of the Milky Way.

In this regard, the first observations with GRAVITY are already very exciting. The GRAVITY team [2] has used the instrument to observe a star known as S2 as it orbits the black hole at the centre of our galaxy with a period of only 16 years. These tests have impressively demonstrated GRAVITY’s sensitivity as it was able to see this faint star in just a few minutes of observation.

The team will soon be able to obtain ultra-precise positions of the orbiting star, equivalent to measuring the position of an object on the Moon with centimetre precision. That will enable them to determine whether the motion around the black hole follows the predictions of Einstein’s general relativity — or not. The new observations show that the Galactic Centre is as ideal a laboratory as one can hope for.

Animation of the path of a light ray through GRAVITY

"It was a fantastic moment for the whole team when the light from the star interfered for the first time — after eight years of hard work," says GRAVITY’s lead scientist Frank Eisenhauer from the Max Planck Institute for Extraterrestrial Physics in Garching, Germany. "First we actively stabilised the interference on a bright nearby star, and then only a few minutes later we could really see the interference from the faint star — to a lot of high-fives.” At first glance neither the reference star nor the orbiting star have massive companions that would complicate the observations and analysis. "They are ideal probes," explains Eisenhauer.

This early indication of success does not come a moment too soon. In 2018 the S2 star will be at its closest to the black hole, just 17 light-hours away from it and travelling at almost 30 million kilometres per hour, or 2.5% of the speed of light. At this distance the effects due to general relativity will be most pronounced and GRAVITY observations will yield their most important results [3]. This opportunity will not be repeated for another 16 years.

Notes:

[1] The centre of the Milky Way, our home galaxy, lies on the sky in the constellation of Sagittarius (The Archer) and is some 25 000 light-years distant from Earth.

[2] The GRAVITY consortium consists of: the Max Planck Institutes for Extraterrestrial Physics (MPE) and Astronomy (MPIA), LESIA of Paris Observatory and IPAG of Université Grenoble Alpes/CNRS, the University of Cologne, the Centro Multidisciplinar de Astrofísica Lisbon and Porto (SIM), and ESO.

[3] The team will, for the first time, be able to measure two relativistic effects for a star orbiting a massive black hole — the gravitational redshift and the precession of the pericentre. The redshift arises because light from the star has to move against the strong gravitational field of the massive black hole in order to escape into the Universe. As it does so it loses energy, which manifests as a redshift of the light. The second effect applies to the star’s orbit and leads to a deviation from a perfect ellipse. The orientation of the ellipse rotates by around half a degree in the orbital plane when the star passes close to the black hole. The same effect has been observed for Mercury's orbit around the Sun, where it is about 6500 times weaker per orbit than in the extreme vicinity of the black hole. But the larger distance makes it much harder to observe in the Galactic Centre than in the Solar System.

More information:

ESO is the foremost intergovernmental astronomy organisation in Europe and the world’s most productive ground-based astronomical observatory by far. It is supported by 16 countries: Austria, Belgium, Brazil, the Czech Republic, Denmark, France, Finland, Germany, Italy, the Netherlands, Poland, Portugal, Spain, Sweden, Switzerland and the United Kingdom, along with the host state of Chile. ESO carries out an ambitious programme focused on the design, construction and operation of powerful ground-based observing facilities enabling astronomers to make important scientific discoveries. ESO also plays a leading role in promoting and organising cooperation in astronomical research. ESO operates three unique world-class observing sites in Chile: La Silla, Paranal and Chajnantor. At Paranal, ESO operates the Very Large Telescope, the world’s most advanced visible-light astronomical observatory and two survey telescopes. VISTA works in the infrared and is the world’s largest survey telescope and the VLT Survey Telescope is the largest telescope designed to exclusively survey the skies in visible light. ESO is a major partner in ALMA, the largest astronomical project in existence. And on Cerro Armazones, close to Paranal, ESO is building the 39-metre European Extremely Large Telescope, the E-ELT, which will become “the world’s biggest eye on the sky”.

Links:

First light of GRAVITY (ESO): http://www.eso.org/public/news/eso1601/

First light of GRAVITY (MPE): http://www.mpe.mpg.de/6499200/News_20160113

GRAVITY instrument web page (ESO): http://www.eso.org/public/teles-instr/vlt/vlt-instr/gravity/

GRAVITY instrument web page (MPE): http://www.mpe.mpg.de/ir/gravity

Orbits of stars around the galactic centre (ESO): https://www.eso.org/public/news/eso0846/

Orbits of stars around the galactic centre (MPE): http://www.mpe.mpg.de/ir/GC/

ESO’s Very Large Telescope (VLT): http://www.eso.org/public/teles-instr/paranal/

VLT Interferometer: http://www.eso.org/public/teles-instr/technology/interferometry/

Images, Text, Credits: ESO/L. Calçada/MPE/S. Gillessen et al./Videos: ESO/L. Calçada/MPE.

Greetings, Orbiter.ch

NASA Scientists Discover Unexpected Mineral on Mars

NASA - Mars Science Laboratory (MSL) logo.

June 23, 2016

Scientists have discovered an unexpected mineral in a rock sample at Gale Crater on Mars, a finding that may alter our understanding of how the planet evolved.

NASA's Mars Science Laboratory rover, Curiosity, has been exploring sedimentary rocks within Gale Crater since landing in August 2012. In July 2015, on Sol 1060 (the number of Martian days since landing), the rover collected powder drilled from rock at a location named "Buckskin." Analyzing data from an X-ray diffraction instrument on the rover that identifies minerals, scientists detected significant amounts of a silica mineral called tridymite.

This detection was a surprise to the scientists, because tridymite is generally associated with silicic volcanism, which is known on Earth but was not thought to be important or even present on Mars.

The discovery of tridymite might induce scientists to rethink the volcanic history of Mars, suggesting that the planet once had explosive volcanoes that led to the presence of the mineral.

Image above: This low-angle self-portrait of NASA's Curiosity Mars rover shows the vehicle at the site from which it reached down to drill into a rock target called "Buckskin." Bright powder from that July 30, 2015, drilling is visible in the foreground. Image Credits: NASA/JPL-Caltech/MSSS.

Scientists in the Astromaterials Research and Exploration Science (ARES) Division at NASA's Johnson Space Center in Houston led the study. A paper on the team's findings has been published in the Proceedings of the National Academy of Sciences.

"On Earth, tridymite is formed at high temperatures in an explosive process called silicic volcanism. Mount St. Helens, the active volcano in Washington State, and the Satsuma-Iwojima volcano in Japan are examples of such volcanoes. The combination of high silica content and extremely high temperatures in the volcanoes creates tridymite," said Richard Morris, NASA planetary scientist at Johnson and lead author of the paper. "The tridymite was incorporated into 'Lake Gale' mudstone at Buckskin as sediment from erosion of silicic volcanic rocks."

The paper also will stimulate scientists to re-examine the way tridymite forms. The authors examined terrestrial evidence that tridymite could form at low temperatures from geologically reasonable processes and not imply silicic volcanism. They found none. Researchers will need to look for ways that it could form at lower temperatures.

"I always tell fellow planetary scientists to expect the unexpected on Mars," said Doug Ming, ARES chief scientist at Johnson and co-author of the paper. "The discovery of tridymite was completely unexpected. This discovery now begs the question of whether Mars experienced a much more violent and explosive volcanic history during the early evolution of the planet than previously thought."

To view the paper, go to: http://www.pnas.org/content/early/2016/06/07/1607098113.full

To learn more about the ARES Division, go to: http://ares.jsc.nasa.gov/aboutares/index.cfm

NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, built the rover and manages the Curiosity mission for NASA's Science Mission Directorate, Washington. For more about Curiosity, visit: http://mars.nasa.gov/msl/

Image (mentioned), Text, Credits: NASA/JPL/Guy Webster/JSC/William P. Jeffs.

Greetings, Orbiter.ch

SolarImpulse - Completing the Atlantic Crossing: more than an aviation first!

SolarImpulse - Around The World patch.

June 23, 2016

Ending gloriously with a colorful flight formation from the Spanish Patrulla Águila, Bertrand Piccard landed in Seville at 5:38AM UTC, 7:38AM CET, 1:38AM EDT on June 23rd after completing the crossing of the Atlantic Ocean.

Spanish Patrulla Águila welcome Si2

Bertrand Piccard has surpassed aviation with this flight by adding an extra twist to this challenge of crossing the Atlantic Ocean. Just like Charles Lindbergh, Bertrand Piccard flew across the Atlantic Ocean, but didn’t choose the easiest way to get there. Himself, André Borschberg and the Solar Impulse team needed an extra challenge: to cross the Atlantic Ocean without a single drop of fuel. This is not a first for aviation, but definitely a first for clean technology.

A beautiful flight that has countlessly left Bertrand in awe at the vast expanse of the Atlantic Ocean - encountering oil tankers, islands, whales, icebergs, and an abundance of water. This flight is Bertrand Piccard’s longest flight with Si2 - reaching a total flight time of 71 hours and 8 minutes to make it across the pond to Europe on the round-the-world solar flights.

Bertrand Piccard, pilot of this flight

His solar brother, André Borschberg, joined the mission engineers at the Mission Control Center in Monaco during the first half of the flight to help plan and follow the flight as closely as possible. They had a few chats over the satcom where André shared his experience from his 117 hour flight. Then he had to race off to Seville, Spain to get the ground crew operations underway, preparing for Bertrand Piccard’s landing. Michèle Piccard, Bertrand’s partner, also passed by the Mission Control Center for two days during the flight to watch the flight from up close and support Bertrand.

Solar Impulse Airplane - Leg 15 - Flight New York to Seville

At 6:30AM UTC, 8:30AM CET, 2:30AM EDT on June 20th, Bertrand Piccard took off from New York City. Thanks to the meticulous work from the Mission Control Center and our weather specialists, they were able to identify a narrow window, bypassing a cold front that was situated in the middle of the Atlantic. We were lucky because it only took the mission engineers nine days to find a weather window to cross the Atlantic Ocean - a lot less time than anyone expected for the volatile Atlantic Ocean. This window opened up to a fantastic path that gave way to this flight to the beautiful Spanish city, Seville.

Si2 landing at Seville

What’s next?

We have now accomplished the crossing of both the Pacific and the Atlantic, the world’s two biggest oceans. This means that 90% of the Round-The-World journey is already behind us. That number sounds completely crazy!

What lies ahead for the remaining 10%? Still a mystery. What we know is that we’ll be staying a few days in Seville – not sure about the organization of a public day yet, we’ll keep you posted – and then fly to Egypt or Greece. To get the latest updates, just give us your email address here and we’ll be sure to send them to you as soon as something new comes up: http://www.solarimpulse.com/subscribe

In another three flights or so we’ll be landing in the summer heat of Abu Dhabi. We’re really beginning to feel like success is at our fingertips! Success will be measured by the number of kilometres we’ve accomplished, but most of all by the number of people we will have inspired to follow their dreams and make the world a better place. Help us by spreading the #futureisclean message!

For more information about SolarImpulse Around The World, visit: http://www.solarimpulse.com/

Images, Video, Text, Credit: SolarImpulse.

Best regards, Orbiter.ch