{"id":12504,"date":"2020-04-30T01:32:16","date_gmt":"2020-04-29T17:32:16","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/scientists-optimistic-planetary-probes-wont-face-coronavirus-launch-delays\/"},"modified":"2020-04-30T01:32:16","modified_gmt":"2020-04-29T17:32:16","slug":"scientists-optimistic-planetary-probes-wont-face-coronavirus-launch-delays","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/scientists-optimistic-planetary-probes-wont-face-coronavirus-launch-delays\/","title":{"rendered":"Scientists optimistic planetary probes won\u2019t face coronavirus launch delays"},"content":{"rendered":"

EDITOR\u2019S NOTE: <\/strong>Updated to correct spelling of Hal Levison\u2019s name.<\/p>\n

\"\"
Artist\u2019s concept of the Lucy spacecraft flying by Trojan asteroids. Credit: NASA\/SWRI<\/figcaption><\/figure>\n

Launches of interplanetary missions can only depart Earth when the positions of the planets are just right, and officials managing the development of probes set for launch in 2021 and 2022 to explore asteroids and Jupiter says construction milestones and reviews are proceeding to keep the projects on schedule despite the coronavirus pandemic.<\/p>\n

NASA\u2019s next planetary mission, the Perseverance Mars rover, remains on schedule for liftoff July 17 from Cape Canaveral. NASA has assigned a high priority to the Perseverance rover, and agency is using government aircraft to shuttle workers between the Kennedy Space Center and the rover team\u2019s home base at the Jet Propulsion Laboratory in Pasadena, California.<\/p>\n

The Perseverance rover mission, estimated to cost roughly $2.7 billion, is the first Mars rover NASA has launched to the Red Planet since 2011. The mission has a 20-day window to depart Earth in July or August, or else wait for the next alignment of Earth and Mars in 2022, a delay that NASA Administrator Jim Bridenstine said could cost $500 million.<\/p>\n

Although they haven\u2019t received the same top-priority classification as the Perseverance Mars rover, other planetary missions with launch windows in the next couple of years are progressing toward their launch dates.<\/p>\n

The Lucy mission, a robotic probe to study an unexplored population of asteroids, is on track for liftoff in October 2021.<\/p>\n

Lockheed Martin is set to begin assembling the spacecraft in August, and production of major components is well underway, according to Hal Levison, the Lucy mission\u2019s principal investigator from the Southwest Research Institute.<\/p>\n

Like other major aerospace contractors, Lockheed Martin\u2019s spacecraft manufacturing facility near Denver is exempt from local and state stay-at-home orders.<\/p>\n

\u201cAerospace is considered an essential industry,\u201d Levison said. \u201cExcept at Goddard Space Flight Center, which is closed, all the work is getting done that needs to get done. People have gone to weird schedules. They\u2019ll have two schedules in a day, and they\u2019ll have half as many people there, and they\u2019re working in teams to handle and minimize the threat from the virus. But all the work is continuing to happen.\u201d<\/p>\n

NASA\u2019s Goddard Space Flight Center is in charge of developing one of Lucy\u2019s science instruments, a color imager, but the space center is closed to all personnel, except employees required to protect life and critical infrastructure.<\/p>\n

While hands-on work continues on most of the Lucy spacecraft\u2019s components, all members of the science team are working remotely.<\/p>\n

\u201cOriginally, the infrastructure of the telecommuting couldn\u2019t handle the transition, so there was a lot of frustration,\u201d Levison said in an interview with Spaceflight Now. \u201cThere are psychological impacts. (That\u2019s) probably the worst aspect of it. You build very close relationships with your team members, and a lot of that comes from being in the same room with them. So not having that is a drag.\u201d<\/p>\n

Levison said Lucy\u2019s engineering team has largely cleared technical issues related to the Lucy spacecraft\u2019s fan-shaped UltraFlex solar arrays and propulsion system.<\/p>\n

\u201cRight now, we\u2019re in the process of building what we need to put it all together,\u201d Levison said. \u201cWe\u2019ve had our share of challenges. The solar arrays, which are huge, didn\u2019t scale up from the previous designs as well as we had hoped. So that has been a challenge for them. We\u2019ve had some things happen with propulsion that were sort of self-inflicted.\u201d<\/p>\n

But those issues are largely behind the Lucy team, Levison said. The schedule has a couple of months of margin to meet Lucy\u2019s planned launch date of Oct. 16, 2021, on top of a United Launch Alliance Atlas 5 rocket.<\/p>\n

\u201cSo far, all the technical issues we\u2019ve had are now solved,\u201d he said. \u201cSo really, except for the virus, there\u2019s nothing between us and getting to the finish line on time. Our budget situation is actually really healthy \u2026 So far, everything looks good.\u201d<\/p>\n

Lucy\u2019s UltraFlex solar arrays, made by Northrop Grumman, are bigger versions of the fan-shaped solar arrays flown on the Cygnus space stations supply ship.<\/p>\n

\u201cScaling things up, it\u2019s much more complicated than the previous ones were,\u201d Levison said. \u201cSo that was a challenge that they needed to take a step back and redesign, for example, the central hub. These solar arrays open like a Chinese fan, so getting all the wiring through the hub was a problem.\u201d<\/p>\n

The nearly $1 billion Lucy mission will be the first to visit a class of solar system objects known as the Trojan asteroids, which orbit in tandem with Jupiter, with groups ahead of and behind the giant planet in its path around the sun. Scientists believe the Trojan asteroids represent a diverse sample of the types of small planetary building blocks that populated the solar system after its formation 4.5 billion years ago.<\/p>\n

Lucy will fly by seven different asteroids from 2025 through 2033.<\/p>\n

If the mission misses its October 2021 launch window, there\u2019s a backup launch opportunity in October 2022, Levison said.<\/p>\n

\"\"
The JUICE spacecraft structure, built by Airbus, arrived at a facility in Friedrichshafen, Germany, earlier this month to begin final integration. Credit: Airbus<\/figcaption><\/figure>\n

Preparations for launch of the European Space Agency\u2019s Jupiter Icy Moons Explorer, or JUICE, mission have also continued as scientists and managers work remotely.<\/p>\n

Technicians working on the JUICE spacecraft itself have largely kept pace with pre-coronavirus schedules, but some development delays related to the pandemic are likely inevitable, according to Giuseppe Sarri, ESA\u2019s JUICE project manager.<\/p>\n

In early April, the JUICE spacecraft chassis departed ArianeGroup\u2019s Orbital Propulsion Center in Lampoldshausen, Germany, where technicians integrated the probe\u2019s chemical propulsion system. Teams then delivered the JUICE spacecraft to an Airbus Defense and Space facility in Friedrichshafen, Germany, where JUICE\u2019s prime contractor will begin installing electronic units.<\/p>\n

\u201cMost of the industrial team is working in shifts,\u201d Sarri said in an interview with Spaceflight Now. \u201cThe way they work is they have two shifts of six hours each, not overlapping.\u201d<\/p>\n

The two shifts help ensure technicians can meet physical distancing guidelines, with a limited number of people inside the manufacturing facility at one time.<\/p>\n

\u201cTherefore, this allows them to work,\u201d Sarri said. \u201cI\u2019m not saying it\u2019s (entirely) nominal because there\u2019s some inefficiency in the transfer, but the activities that were on the critical path, they are still nominal.\u201d<\/p>\n

JUICE\u2019s primary launch window opens May 21, 2022, and extends until June 10 of that year. It will launch on an Ariane 5 ECA or Ariane 64 rocket from Kourou, French Guiana.<\/p>\n

Assuming a launch in May or June 2022, JUICE will reach Jupiter in October 2029 and conduct a series of close flybys of three of Jupiter\u2019s icy moons \u2014 Callisto, Europa and Ganymede \u2014 before entering orbit around Ganymede itself in December 2032. With the final phase of JUICE\u2019s mission at Ganymede, the spacecraft will become the first in history to orbit around the moon of another planet.<\/p>\n

JUICE is the first European-led mission to the outer solar system.<\/p>\n

The mission\u2019s 10 remote sensing, geophysical and in situ instruments include a camera suite, spectrometers, a laser altimeter for topographic measurements, an ice-penetrating radar, and a package of plasma wave sensors, particle detectors, a magnetometer, and a payload to study the gravity field of Jupiter and its moons.<\/p>\n

Scientists want to learn more about Jupiter\u2019s atmosphere and magnetosphere, and collect up-close data about Jupiter\u2019s three moons believed to harbor underground oceans of liquid water.<\/p>\n

In parallel with the spacecraft assembly work in Germany, teams around Europe and in the United States are building and testing JUICE\u2019s scientific instruments.<\/p>\n

\u201cThere is a scientific institution which is in charge of each instrument, but most of the work is done by industry,\u201d Sarri said. \u201cThat is the case for the Italian instrument, and the same for the two German instruments. So for those instruments, the industry is working in shifts. That\u2019s allowed to continue.<\/p>\n

\u201cIt\u2019s more difficult for instruments where there is an institution like a university or a research center because they have less capability to organize in shifts, to work extended hours, etc. But I would say that they are almost all still working.\u201d<\/p>\n

Sarri said JUICE had around three months of schedule margin before the coronavirus pandemic hit.<\/p>\n

\u201cI would expect we will have to erode part of of our margin,\u201d Sarri said. \u201cI\u2019m not positive, but I think that we will not eat up all the margin \u2026 Of course, we will have less margin, which means that if we have other problems in the future we will be a bit less healthy in terms of margin.\u201d<\/p>\n

The next launch opportunity for JUICE is just three months later \u2014 in August and September 2022. But the backup launch window would put JUICE on a slower trajectory toward Jupiter. The three-month slip would result in a two-year delay in JUICE\u2019s arrival at the giant planet from 2029 to 2031.<\/p>\n

\u201cI\u2019m very positive to launch in 2022, and I\u2019m still reasonably optimistic to keep it in June 2022,\u201d Sarri said. \u201cIt\u2019s clear that we are accumulating a delay, but it\u2019s not dramatic yet. It depends on how far the situation will go.\u201d<\/p>\n

\"\"
A technician at Maxar\u2019s satellite integration facility in Palo Alto, California, prepares to integrate an element of the Psyche spacecraft\u2019s electric propulsion system. Credit: Maxar<\/figcaption><\/figure>\n

Development of NASA\u2019s Psyche mission \u2014 scheduled for launch in July 2022 on a SpaceX Falcon Heavy rocket \u2014 is also continuing, according to Lindy Elkins-Tanton, the mission\u2019s principal investigator from Arizona State University.<\/p>\n

Maxar, formerly known as Space Systems\/Loral, is building the Psyche spacecraft in Palo Alto, California.<\/p>\n

Production of the chassis of the Psyche probe has started at Maxar, which completed the spacecraft\u2019s critical design review April 15. A mission-level critical design review is scheduled for next month to finalize and freeze the overall design.<\/p>\n

Assuming a launch in July 2022, the Psyche spacecraft will reach Mars in May 2023, where it will use the planet\u2019s gravity to slingshot into the asteroid belt. The spacecraft is scheduled to arrive at asteroid Psyche in January 2026, then orbit the metallic world for 21 months.<\/p>\n

The asteroid is about the size of Massachusetts and has an irregular shape. It completes one rotation every 4.2 hours.<\/p>\n

Observations of Psyche through telescopes suggest the asteroid is composed largely of nickel-iron metal, suggesting the asteroid could be the leftover core from the building block of a planet, or planetesimal, in the early solar system more than 4 billion years ago.<\/p>\n

\u201cWe\u2019re moving forward on all fronts, though some a little more slowly than before,\u201d Elkins-Tanton told Spaceflight Now. \u201cTruly, safety of the team comes first.\u201d<\/p>\n

Email the author.<\/i><\/b><\/p>\n

Follow Stephen Clark on Twitter: @StephenClark1.<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

EDITOR\u2019S NOTE: Updated to correct spelling of Hal Levison\u2019s name. Artist\u2019s concept of the Lucy spacecraft flying by Trojan asteroids. Credit: NASA\/SWRI Launches of interplanetary missions can only depart Earth when the positions of the planets are just right, and officials managing the development of probes set for launch in 2021 and 2022 to explore asteroids […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[1657,1634,1519,2010,831,1660,455,1183],"class_list":["post-12504","post","type-post","status-publish","format-standard","hentry","category-news","tag-airbus-defense-and-space","tag-arianegroup","tag-asteroids","tag-coronavirus","tag-european-space-agency","tag-ganymede","tag-germany","tag-jet-propulsion-laboratory"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/12504"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=12504"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/12504\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=12504"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=12504"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=12504"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}