How long would BepiColombo have to wait if it missed its window?
How long would BepiColombo have to wait if it missed it's window?
Quote from: Nomadd on 08/01/2017 11:40 pm How long would BepiColombo have to wait if it missed it's window?The first two flybys are Earth and Venus. [...]So the next similarly good trajectory will be about 19 months later, or June 2020, more or less.
The five sunshield layers responsible for protecting the optics and instruments of NASA’s James Webb Space Telescope are now fully installed.Northrop Grumman Corporation in Redondo Beach, California who designed the Webb telescope’s optics and spacecraft bus for NASA’s Goddard Space Flight Center in Greenbelt, Maryland, integrated the final flight layers into the sunshield subsystem. The team is now folding and stowing the layers, in preparation for deployment tests in August.The sunshield layers work together to reduce the temperatures between the hot and cold sides of the observatory by approximately 570 degrees Fahrenheit. Each successive layer of the sunshield, made of kapton, is cooler than the one below. All layers were installed and tested in June and July 2017 at Northrop Grumman Corporation’s Space Park facility in Redondo Beach.“This is a huge milestone for the Webb telescope as we prepare for launch,” said Jim Flynn, Webb sunshield manager, Northrop Grumman Aerospace Systems. “The groundbreaking tennis court sized sunshield will shield the optics from heat and assist in providing the imaging of the formation of stars and galaxies more than 13.5 billion years ago.”"All five sunshield membranes have been installed and will be folded over the next few weeks," said Paul Geithner, deputy project manager - technical for the Webb telescope at NASA's Goddard Space Flight Center in Greenbelt, Maryland.The Webb telescope’s sunshield will prevent the background heat from the sun from interfering with the telescope’s infrared sensors. The five sunshield membrane layers, designed and manufactured by the NeXolve Corporation in Huntsville, Alabama, are each as thin as a human hair. Because the sunshield is the size of a tennis court, it helps solidify the Webb telescope as the largest ever built for space. The sunshield, along with the rest of the spacecraft, will fold origami-style into an Ariane 5 rocket.The Webb telescope is the world’s next-generation space observatory and successor to the Hubble Space Telescope. The most powerful space telescope ever built, the Webb telescope will observe distant objects in the universe, provide images of the first galaxies formed and see unexplored planets around distant stars. The Webb Telescope is a joint project of NASA, the European Space Agency and the Canadian Space Agency.
Excellent programme from the BBC World Service radio about the James Webb Space Telescope.http://www.bbc.co.uk/programmes/w3csvnv2
Jeff Foust @jeff_foustScolese: JWST has survived a gov’t shutdown, derecho, snowstorm, and now hurricane. Hope when it goes to Calif. there’s not an earthquake.5:32 pm · 8 Sep 2017
Jeff Foust @jeff_foustScolese: lost only a couple days of testing at JSC. Still on track for late 2018 launch, pending resolution of launch schedule conflicts.5:44 pm · 8 Sep 2017
QuoteJeff Foust @jeff_foustScolese: lost only a couple days of testing at JSC. Still on track for late 2018 launch, pending resolution of launch schedule conflicts.5:44 pm · 8 Sep 2017https://mobile.twitter.com/jeff_foust/status/906196606642466817
https://twitter.com/AuerSusan/status/913002901047582723Quote Susanne Auer @AuerSusanAn interesting detail from the #Arianespace #IAC2017 presentation:#BepiColombo will launch 2018#JWST one year later in 2019 #ESA #NASA
Susanne Auer @AuerSusanAn interesting detail from the #Arianespace #IAC2017 presentation:#BepiColombo will launch 2018#JWST one year later in 2019 #ESA #NASA
I should clarify that that "one year later" here just means in 2019, not "365 days after BepiColombo". I could have phrased that better in the tweet.Original source is Jacques Breton, Arianespace VP Sales & Customers, speaking at IAC2017Calapine aka Susanne Auer
Clash of launch site preparation places with BepiColombo which has a planetary launch window to chase in October 2018.
Hertz: JWST telescope assembly completing thermal vacuum test at JSC; open up chamber next week.
NASA’s Eric Smith says JWST delay will consume most of HQ reserves for the mission, but still remain within overall budget.
Smith adds the decision to delay JWST to “late spring” of 2019 had nothing to do with schedule conflict with BepiColombo launch in Oct ’18.
Quote from: FutureSpaceTourist on 10/18/2017 06:42 pmSmith adds the decision to delay JWST to “late spring” of 2019 had nothing to do with schedule conflict with BepiColombo launch in Oct ’18.I know some knowledgeable people who would snort at that comment...
Jacob Aron@jjaronReplying to @jeff_foustHow else you going to solve it? In a turf war on an ESA launch site, seems like the ESA mission wins@jeff_foustI think we would have heard otherwise—particularly from members of Congress unhappy to spend NASA money to help an ESA mission.
especially as long a delay as it turned out to be, is IMO dishonest.
Quote from: as58 on 10/18/2017 07:46 pmespecially as long a delay as it turned out to be, is IMO dishonest. ...don't be surprised if JWST's launch date slips even further...(I'm just sayin'...)
Yeah, AAS, for example, apparently never got the memo...https://aas.org/posts/blog/2017/10/jwst-launch-delayed-will-remain-within-cost-cap