m3n4.net
m3n4.net November 19, 2018


After 37 years, Voyager 1 has fired up its trajectory thrusters

05 December 2017, 01:53 | Tara Lloyd

Image courtesy NASA JPL-Caltech

NASA fires up Voyager 1 backup thrusters after 37 years

The probe now uses its attitude control thrusters to make tiny corrections - firing for only milliseconds at a time - to rotate it to point its antenna towards Earth.

NASA scientists are celebrating after firing a spacecraft's thrusters almost four decades since they were last used.

While the ACMs work, since 2014 they've use more fuel than in the past. However, we can still communicate with Voyager across that distance.

The JPL's engineers began to look into alternatives, and found a new way to steer the spacecraft: the probe's trajectory correction maneuver (TCM) thrusters.

Hong Kong Open: Sindhu, Prannoy kick off campaign with contrasting wins
He squandered three match points to slump to a 21-15, 9-21, 20-22 defeat to the World No. 52 Lee Dong Keun of Korea. Right from the start, Sindhu looked lethal and played aggressively to outplay her opponent in straight games.

"We got more excited with each milestone in the thruster test".

For the first time since 1980, NASA activated Voyager 1's backup thrusters.

"With these thrusters that are still functional after 37 years without use, we will be able to extend the life of the Voyager 1 spacecraft by two to three years", said Suzanne Dodd, project manager for Voyager at NASA's Jet Propulsion Laboratory, Pasadena, California.

The TCM thrusters were last fired on November 8, 1980, on approach to Saturn, and Voyager 1 used the miniature rocket engines in a more continuous firing mode, not in individual pulses as needed now, NASA officials said.

Bill O'Reilly Sued for Allegedly Defaming One of His Accusers
Fox News ended its association with O'Reilly in April due to sexual harassment allegations against the TV host and commentator. The statement by Fox News is deliberately misleading and in breach of Fox's agreement not to disparage Ms.

Man, they just don't build 'em like they used to. Voyager 1 is 13 billion miles from home and is the first man-made object to leave the solar system and enter interstellar space. Now, nearly four decades later, they've come back to life without a hitch to take over for the failing attitude control thrusters. But this past Tuesday, engineers fired them up anyway, and after 19 hours of waiting for the results to transmit from Voyager's antenna to Earth, they learned that it actually worked.

"The mood was one of relief, joy and incredulity after witnessing these well-rested thrusters pick up the baton as if no time had passed at all", says NASA propulsion engineer Todd Barber. The spacecraft will have to turn on one heater on each of the four TCM thrusters, putting a further drain on Voyager 1's decaying plutonium power source.

Scientists expect Voyager 2 to make the crossing into interstellar space within a few years, heading in a different direction from the sun.

The test went so well that not only will Voyager 1 be switching over to the backup thrusters until there's no longer enough power to keep them warm, but they're looking into to doing the same thing for its twin, Voyager 2 - after proper testing, of course. The Voyager missions are a part of the NASA Heliophysics System Observatory, sponsored by the Heliophysics Division of the Science Mission Directorate in Washington.

Griffin hurt; Clippers hang on to beat Lakers 120-115
Last season, Griffin played in just 61 games after an injury and issue plagued 2015-2016 season limited him to just 35 games. Griffin is expected to return this season, which is good news after seeing how bad that injury looked.



Other News

Trending Now

US, allies push for United Nations meeting on North Korea rights abuses
The other was the "testing of a long-range ICBM", the implication being this had been achieved with the most recent launch . Every missile test , every underground test of a nuclear weapon, means the marriage is more likely.

Trump's ex-NSA Flynn pleads guilty to lying in Russian Federation probe
As Mueller's probe intensified in the early months of the Trump administration, Gates left the nonprofit altogether. The documents allege that Flynn lied about conversations with the Russian Ambassador at the time, Sergei Kislyak.

Missing teen out of Columbia County located safe in NY
Friday by a State Police investigator, Todd Grant, who recognized Rodriguez's red Mercury sedan and its Florida license plates. Frisina has played soccer at Fort White High School, according to an online roster published by Next College Student Athlete.

Microsoft plans a multibillion-dollar overhaul of its Redmond headquarters
The overhauled campus will feature underground smart parking facility, as well as inclusive and accessible technology. Having been the bane of many Microsoft employee for their confusing corridors, it's unlikely they'll be missed.

Reported plans to fire Tillerson roil State Department
But Trump never signed off, and officials have struggled to focus his attention on the matter, the individual said. White House spokeswoman Sarah Huckabee Sanders says there are "no personnel announcements at this time".

Masked Gunman Robs Bellagio Poker Cage
Police have described the suspect as a white male adult, but have not presented any other description of the suspect. The unidentified man was able to leave the vehicle before the suspect drove away and is safe.

Jimbo Fisher leaving FSU for Texas A&M job
Confirmed: ESPN had a spot months ago that featured a UL-Monroe Warhawks fan getting Fisher out of the picture at Florida State. Florida State had the running game going as they totaled 302 yards between Jacques Patrick and Cam Akers.

Judge Grants Waymo's Request To Postpone Trade Secret Trial Against Uber
The trial was originally scheduled to begin on December 4, but Waymo filed a last-minute motion to postpone on Monday. Jacobs had drafted a letter with lawyers to Uber's in-house lawyer regarding the ethics of the above practices.

Yemen's Ex-President Saleh Reported Killed In Fighting
This week's fighting reportedly left aid workers trapped inside a building and unable to administer support to civilians. Unverified footage circulated by Yemeni social media users on Monday appeared to a show corpse resembling Saleh.

USA concerned over release of Hafiz Saeed
JuD chief Hafiz Saeed carries $10 million bounty for his role in terror activities, which include the 2008 Mumbai attack. A court on Wednesday ruled out prolonging Saeed's detention due to a lack of evidence or justification for it.