Автор Anatoly Zak, 26.05.2011 08:53:55
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ЦитатаDecember 17, 2015 - A sophisticated laser-based mapping instrument has arrived at Lockheed Martin Space Systems in Denver for integration onto NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft.The OSIRIS-REx Laser Altimeter (OLA), contributed by the Canadian Space Agency (CSA), will create 3-D maps of asteroid Bennu to help the mission team sel ect a sample collection site."The OSIRIS-REx Project has worked very closely with our partner CSA and their contractor MDA to get this critical instrument delivered to the spacecraft contractor's facility," said Mike Donnelly, OSIRIS-REx project manager fr om NASA's Goddard Space Flight Center in Greenbelt, Maryland. "We are very pleased with the performance of the instrument and look forward to its contribution to our mission."OLA is an advanced LIDAR (Light Detecting and Ranging) system that will scan the entire surface of the asteroid to create a highly accurate, 3-D shape model of Bennu. This will provide mission scientists with fundamental data on the asteroid's shape, topography (distribution of boulders, rocks and other surface features), surface processes and evolution. An accurate shape model will also be an important tool for navigators as they maneuver the OSIRIS-REx spacecraft around the 500-meter-wide (0.3-mile-wide) asteroid. In exchange for providing the OLA instrument, CSA will receive a portion of the returned asteroid sample for study by Canadian scientists. Скрытый текст: "OLA will measure the shape and topography of Bennu to a much higher fidelity and with much greater efficiency than any planetary science mission has achieved," said Michael Daly, OLA instrument lead at York University, Toronto. "This information is essential to understanding the evolution and current state of the asteroid. It also provides invaluable information in aid of retrieving a sample of Bennu for return to Earth."After launch in September 2016, the OSIRIS-REx spacecraft will travel to the near-Earth asteroid Bennu and bring at least a 60-gram (2.1-ounce) sample back to Earth for study. Scientists expect that Bennu may hold clues to the origin of the solar system and the source of water and organic molecules that may have made their way to Earth. OSIRIS-REx's investigation will also inform future efforts to develop a mission to mitigate an asteroid impact on Earth, should one be required."The data received from OLA will be key to determining a safe sample site on Bennu," said Dante Lauretta, principal investigator for OSIRIS-REx at the University of Arizona, Tucson. "This instrument is a valuable addition to the spacecraft, and I appreciate our Canadian partners' hard work and contribution to the OSIRIS-REx mission."The laser altimeter was built for CSA by MacDonald, Dettwiler and Associates Ltd. (MDA) and its partner, Optech. OSIRIS-REx is scheduled to ship fr om Lockheed Martin's facility to NASA's Kennedy Space Center, Florida in May 2016, wh ere it will undergo final preparations for launch.
ЦитатаOSIRIS-REx has achieved many major milestones over the past month. Of the more significant accomplishments is the installation of the Regolith X-ray Imaging Spectrometer (REXIS) on the spacecraft. The instrument team has successfully installed the REXIS Spectrometer and Solar X-ray Monitor on the spacecraft. The Initial Power-on and functional tests were successfully completed on December 19. However, there is more to the story of how REXIS made it on to the spacecraft. Скрытый текст: REXIS was originally scheduled for installation in September 2015. However, after careful consideration, the project decided that we could not approve moving forward with an ATLO Integration Readiness Review (AIRR) for the REXIS instrument at that time. We came to this conclusion based upon the number of items that remained open on the instrument. REXIS has always been primarily viewed as an educational opportunity to train the next generation of scientists and engineers in the development of spaceflight hardware. So science return from the instrument is a second priority to ensuring that REXIS does not damage the spacecraft or other science instruments. To this end, the project focused on the "do-no-harm" verification items that needed to be successfully closed before we could be assured that the REXIS instrument was safe to integrate to the spacecraft. In addition, there was an unexplained shift in a primary vibration mode that was revealed during instrument-level vibration testing. That unexplained shift had our mechanical engineers concerned about the safety of the instrument.At the same time, Rick Binzel, the REXIS Instrument Scientist at MIT, expressed concern about the instrument's expected science performance. Even though REXIS is a student experiment, there is still an expectation that it will contribute scientific knowledge about Bennu and enhance the OSIRIS-REx mission's science return. Rick pointed out several problems with the instrument and included suggested solutions. Output noise from the main spectrometer CCDs was limiting the energy resolution. In addition, the Solar X-ray Monitor (SXM) performance was limited by an unpowered trigger circuit within the main spectrometer electronics. Since REXIS installation was already delayed until after spacecraft mechanical testing, we decided to use this time to put our full effort into restoring its science performance.The team quickly assessed the current state of the instrument and identified several repairs. The output noise performance could by improved by adding some noise limiting capacitors to the spectrometer electronics. Spectrometer spectral energy resolution degradation was traced to the improper grounding of power supply cases on the main electronics box. This problem was solved by the addition of capacitors to the electronics. The failure of the SXM to trigger on X-ray events meant that the instrument could not distinguish real X-ray events from noise. This failure was the result of an error in the electronics layout; there was no power being provided to the trigger amplifier. This problem was solved by the addition of two jumper wires on the main electronics box and the addition of capacitors to the SXM circuitry.To implement these repairs, REXIS was shipped from Denver back to the MIT Lincoln Laboratory. There, the electronics box was opened and the SXM was disassembled. The board repairs were completed and REXIS's performance was restored to full functionality. With these repairs in place, REXIS can now enhance the science return of the OSIRIS-REx mission. Rick Binzel contacted me to give his full recommendation for REXIS's inclusion in the OSIRIS-REx payload. In addition, REXIS demonstrated that it met all the "do-no-harm" requirements post repair. REXIS was now ready for spacecraft installation.
ЦитатаThe OSIRIS-REx mission, launching in September 2016, plans to return a sample of asteroid Bennu to Earth in 2023 so that scientists can study pristine material left over from the early solar system. Dante Lauretta, Principal Investigator for OSIRIS-REx, provides an overview of this asteroid sample return mission.
ЦитатаAugust will be spent stacking an Atlas 5 rocket with a single solid booster, the 411 configuration, and rolling the vehicle to the pad for a rare countdown dress rehearsal to ensure systems are operating correctly ahead of the time-sensitive launch of NASA's OSIRIS-REx probe to asteroid Bennu. An artist's concept of OSIRIS-REx. Credit: Lockheed Martin The craft will be dispatched on a two-year journey to reach the near-Earth object for a detailed survey and sample collection using a robotic arm to reach out and touch the asteroid.OSIRIS-REx then fires its engines to return home with the pristine sample stowed in a decent capsule that will make a parachute-assisted landing in remote Utah in 2023.Launch is scheduled for Sept. 8 at 7:05 p.m. EDT. The day's 120-minute launch window will have liftoff opportunities every five minutes based on the evolving trajectory.OSIRIS-REx must be launched by Oct. 12 or else face a year-long delay due to planetary alignment, making the schedule, vehicle stacking and countdown rehearsal critical.Built in Denver by Lockheed Martin, the spacecraft is scheduled to arrive at the Kennedy Space Center's Shuttle Landing Facility on May 20 and be taken to the Payload Hazardous Servicing Facility for final preparations.
Цитата SimpleFly Tech @simpleflytech @ulalaunch giving you the EXPANDED view of the #atlasV boosting @OSIRISREx on its journey to asteroid Bennu
Цитата Denver7 News Подлинная учетная запись @DenverChannel Model of Atlas V 411 that will lauch @OSIRISREx into space! #NASASocial @ulalaunch @LockheedMartin
Цитата Brian Berger @Berger_SN Surely there are better ways to fly from Denver to Florida, @jeff_foust #osirisrex Jeff Foust @jeff_foust 55 мин.55 минут назад Denver, CO Hope my seat mate on this flight isn't too rambunctious. #OSIRISREx Jeff Foust @jeff_foust 1 ч.1 час назад Denver, CO OSIRIS-REx is in the C-17 now. Jeff Foust @jeff_foust 2 ч.2 часа назад Denver, CO . @DSLauretta watches as #OSIRISREx is loaded into the aircraft. Jeff Foust @jeff_foust 2 ч.2 часа назад Denver, CO Loading of #OSIRISREx into the C-17. Jeff Foust @jeff_foust 2 ч.2 часа назад Loading #osirisrex onto the C-17. Jeff Foust @jeff_foust 2 ч.2 часа назад Denver, CO We have liftoff: OSIRIS-REx has cleared the truck. #OSIRISREx Jeff Foust @jeff_foust 3 ч.3 часа назад Denver, CO OSIRIS-REx has arrived at Buckley, and they're starting work to load it onto the C-17. #OSIRISREx Jeff Foust @jeff_foust 4 ч.4 часа назад Denver, CO Today's ride: a C-17. #OSIRISREx Jeff Foust @jeff_foust 5 ч.5 часов назад Denver CO Briefing before the convoy departs LM for Buckley AFB. #OSIRISREx Jeff Foust @jeff_foust 6 ч.6 часов назад Denver CO The full House Appropriations Cmte will mark up its CJS spending bill (including NASA and NOAA) on Tuesday: http://appropriations.house.gov/uploadedfiles/hmkp-114-ap00-20160524-sd001.pdf ... Jeff Foust @jeff_foust 6 ч.6 часов назад Denver CO Every mission needs a mascot, including @OSIRISREx. Jeff Foust @jeff_foust 6 ч.6 часов назад Denver CO There's @OSIRISREx, loaded and ready to roll from Lockheed Martin this morning.
ЦитатаNASA probe that will make round trip to asteroid and back sent to launch base May 20, 2016 Justin Ray[/url]Credit: OSIRIS-REx project CAPE CANAVERAL -- Equipped with a robot arm, sample collector and return capsule, NASA's asteroid-bound OSIRIS-REx probe emerged from its pristine factory and flew to the launch site in Florida this evening.A United Launch Alliance Atlas 5 rocket will hurl the 4,650-pound spacecraft toward Asteroid Bennu on Sept. 8 for a 7-year, round trip voyage to return a specimen of the celestial object to scientists on Earth."It's a great adventure to explore an unknown world. We are going to reach out and touch it, and we are going to bring treasure back to Earth," said Dante Lauretta, the OSIRIS-REx principal investigator.It is a daring mission to be sure, with the tiny solar-powered satellite executing a "touch-and-go" maneuver at 0.22 mph in 2019 to obtain the sample from the relic of the solar system's creation.OSIRIS-REx's arm will contact the surface of Bennu for only five seconds, firing a puff of nitrogen gas to stur up the regolith into the collection chamber. The mission hopes to obtain between 2.1 ounces and 4.4 pounds of Bennu, the most extraterrestrial material returned to Earth since Apollo.After the valuable cargo is stowed, the craft will fly back to Earth and fire a descent capsule to a parachute-assisted landing in September 2023 in Utah."The asteroids record the earliest stages of the solar system, so it really is time capsule from the very dawn in the history of our solar system," Lauretta said."My dream is that we find something that is unique, that is not represented in our meteorite collection, that is really organically-rich material on the surface of this asteroid that holds all kinds of scientific treasures about the origin of life and organic molecular evolution in the solar system."The launch campaign began today as OSIRIS-REx was flown from Lockheed Martin production facilities in Denver, via Buckley Air Force Base, to the Shuttle Landing Facility at the Kennedy Space Center. The Air Force C-17 transport aircraft touched down just before 7:30 p.m.It will be taken to the Payload Hazardous Serving Facility to undergo final testing and the loading of 2,600 pounds of maneuvering fuel.Two other Atlas launches are scheduled between now and OSIRIS-REx, deploying a Navy communications spacecraft on June 24 and a classified spy satellite at the end of July.Then stacking of the 411-configured Atlas 5 will occur in August at Cape Canaveral for America's first asteroid sample-return mission. The two-stage rocket will feature a lone side-mounted solid booster for added takeoff thrust, a unique variant that has flown successfully three times before. The first Atlas 5-411 launched the European ASTRA 1KR television broadcast satellite in 2006. Credit: Ben Cooper/Spaceflight Now ULA and NASA managers plan to move the rocket to the launch pad temporarily in late August for a full countdown dress rehearsal and fueling exercise to uncover any technical issues.That's because OSIRIS-REx has a limited launch window, through Oct. 12, for planetary alignment reasons. If it misses this opportunity, the flight would be delayed a year.Liftoff on Sept. 8 is scheduled for 7:05 p.m. EDT (2305 GMT). The day's 120-minute launch window will have liftoff chances every five minutes based on the evolving trajectory.The OSIRIS-REx name stands for the Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer. It is the third mission in NASA's New Frontiers program to explore the solar system, following New Horizons to Pluto and Juno currently en route to Jupiter.
Цитата OSIRIS-REx @OSIRISREx 9 ч.9 часов назад My chariot to the Payload Hazardous Servicing Facility. Good night all! See you tomorrow. #ShipToCape OSIRIS-REx @OSIRISREx 9 ч.9 часов назад My other vehicle is a forklift. #ShipToCape #OSIRISREx OSIRIS-REx @OSIRISREx 9 ч.9 часов назад On solid ground in at @NASAKennedy in #CapeCanaveral! #ShipToCape OSIRIS-REx ретвитнул(а) Dante Lauretta @DSLauretta 10 ч.10 часов назад .@OSIRISREx is disembarking from the C-17 and headed to the Payload Handling Facility. #ShipToCape OSIRIS-REx @OSIRISREx 10 ч.10 часов назад "Next stop: #Bennu!" #ShipToCape OSIRIS-REx @OSIRISREx 10 ч.10 часов назад Why, hello there! I'm almost ready to disembark at @NASAKennedy! OSIRIS-REx @OSIRISREx 10 ч.10 часов назад My whole team is thrilled to be in #CapeCanaveral. @DSLauretta OSIRIS-REx @OSIRISREx 11 ч.11 часов назад My PI @DSLauretta and our Project planning & control officer, Heather Enos, on the runway. #ShipToCape #osirisrex OSIRIS-REx @OSIRISREx 11 ч.11 часов назад After a 7:20 pm touchdown, my team is starting to disembark at @NASAKennedy. Hello Florida! #ShipToCape OSIRIS-REx @OSIRISREx 11 ч.11 часов назад We've touched down at @NASAKennedy! #ShipToCape
Цитата Lockheed Martin Подлинная учетная запись @LockheedMartin What a day! @OSIRISREx is safe @NASAKennedy where it will get ready to launch on the @ULALaunch #AtlasV! 19:25 - 20 мая 2016 г.
ЦитатаOSIRIS-REx Spacecraft to Arrive TodayPosted on May 20, 2016 at 2:42 pm by Steven Siceloff.The spacecraft that will perform NASA's Origins Spectral Interpretation Resource Identification Security - Regolith Explorer mission, known as OSIRIS-REx, will arrive at Kennedy Space Center fr om Buckley Air Force Base near Denver on May 20 aboard an Air Force C-17 at the Shuttle Landing Facility.OSIRIS-REx will come out of the shipping container May 21, go onto a rotation fixture on May 23, have a spin test May 24-25. It then will be hoisted onto a dolly May 26 for other upcoming activities. A partial solar array deployment test is scheduled on May 31.OSIRIS-Rex is scheduled to launch Sept. 8 at 7:05 p.m. EDT. As planned, the spacecraft will reach its near-Earth asteroid target, called Bennu (formerly 1999 RQ36), in 2018. Once within three miles of the asteroid, the spacecraft will begin six months of comprehensive surface mapping.The science team then will pick a location wh ere the spacecraft's arm will take a sample. The spacecraft gradually will move closer to the site, and the arm will extend to collect a 2.1-ounce sample for return to Earth in 2023. The mission will help scientists investigate how planets formed and how life began, as well as improve our understanding of asteroids that could impact Earth.Bennu is about 1,900 feet in diameter or roughly the size of six football fields. The asteroid, a little altered over time, is likely to represent a snapshot of our solar system's infancy.NASA's Goddard Space Flight Center provides overall mission management, systems engineering, and safety and mission assurance for OSIRIS-REx. Dante Lauretta is the principal investigator at the University of Arizona's Lunar and Planetary Laboratory. Lockheed Martin Space Systems in Denver built the spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program. NASA's Marshall Space Flight Center in Huntsville, Alabama, manages New Frontiers for the agency's Science Mission Directorate in Washington, D.C.
Цитата OSIRIS-REx @OSIRISREx 3 ч.3 часа назад I am one good looking spacecraft. #ItsNotBraggingIfItsTrue OSIRIS-REx @OSIRISREx 4 ч.4 часа назад Almost ready for my close-up. #ShipToCape OSIRIS-REx @OSIRISREx 4 ч.4 часа назад Whew! It was warm in there. #ShipToCape OSIRIS-REx @OSIRISREx 4 ч.4 часа назад Good morning from the Payload Hazardous Servicing Facility (PHSF)! #ShipToCape NASA Kennedy / KSC
Цитата Jeff Foust @jeff_foust 3 ч3 часа назад Another angle of #OSIRISREx Jeff Foust @jeff_foust 3 ч3 часа назад Whew, there really was a spacecraft inside there. #OSIRISREx Jeff Foust @jeff_foust 3 ч3 часа назад Removing the birdcage involves a crane that vaguely resembles a jellyfish. #OSIRISREx Jeff Foust @jeff_foust 4 ч4 часа назад Spacecraft moved into position to remove the interior "birdcage" structure. #OSIRISREx Jeff Foust @jeff_foust 4 ч4 часа назад Unboxing #OSIRISREx Jeff Foust @jeff_foust 5 ч5 часов назад Getting ready to unpack #OSIRISREx in a clean room at KSC.
ЦитатаOSIRIS-REx @OSIRISREx 4m agoWow, time flies! Just 100 days until I depart for my journey #ToBennuAndBack. #CountdownToLaunch
ЦитатаKENNEDY SPACE CENTER, Fla., -- Engineers working on NASA's Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS REx) spacecraft successfully carried out tests of the vehicle's communications systems. The tests were recently conducted at the center's MIL-71 in preparation for a launch currently slated to take place on Sept. 8, 2016.These tests were the latest milestone that OSIRIS-REx completed in preparation for a flight aloft atop a United Launch Alliance (ULA) Atlas V 411 rocket fr om Cape Canaveral Air Force Station's Space Launch Complex 41 in Florida. Скрытый текст: OSIRIS-REx is a sample-return mission that NASA is planning on launching to collect a piece of asteroid Bennu and then fly back to Earth for scientists to study.The recent tests were held to ensure the spacecraft will be able to send important information to mission managers back on Earth. Data transmitted through the vehicle's communications system includes, but is not limited to, scientific discoveries, the vehicle's overall health and a survey of Bennu.The tests provided mission planners with the opportunity to see how OSIRIS-REx's communications systems will operate when they are millions of miles in space - even though the test site was located next door to wh ere the spacecraft was situated.OSIRIS-REx's comms system was checked out at KSC as well as at the space agency's Deep Space Network which has antennas located in Canberra, Australia, California and in Spain. These are not the dishes that the average citizen uses for television or internet services however, some of Deep Space Network's antenna measure 230 feet in diameter.As one might imagine, for NASA to be able to even conduct the test means that the agency must use a diverse array of equipment and personnel.If everything goes according to plan, all of the team's hard work will be validated about 20 minutes after the probe soars off the pad and into the sky. At that time, the team should know that the communications systems are working as advertised. This should take place around the same time that the spacecraft separates from Atlas' Centaur upper stage and then deploys its solar array.OSIRIS-REx cost an estimated $800 million, with the Atlas V 411 booster costing an additional $184 million. The mission's Principal Investigator, Dante Lauretta, hails from the University of Arizona and it is the third mission selected under NASA's New Frontiers Program andThe mission has its work cut out for it as scientists hope it will be able to provide them with a better understanding of how the planets formed and life began on Earth.
ЦитатаNASA's OSIRIS-REx spacecraft is on a mission explore to near-Earth asteroid Bennu, a carbon-rich body that may contain clues to the origins of life. OSIRIS-REx is equipped with a suite of technologies designed to map and study Bennu in unprecedented detail. The OSIRIS-REx Visible and Infrared Spectrometer, or OVIRS, will look at the asteroid's spectral signature to detect organics and other minerals. After OSIRIS-REx has thoroughly surveyed Bennu from orbit, will descend to the surface and collect a sample of the asteroid for return to Earth in 2023. In this video, OVIRS instrument scientists Dennis Reuter and Amy Simon discuss the challenges and rewards of sending a spectrometer into deep space.