Space

December 19, 2012

Lockheed Martin, NASA de-orbit twin Grail spacecraft into Moon

NASA’s Gravity Recovery And Interior Laboratory mission came to an end today as planned when the Lockheed Martin and the Jet Propulsion Laboratory flight operations team commanded the two spacecraft to de-orbit and impact the surface of the moon.

Lockheed Martin built the twin robotic spacecraft and conducted flight operations for NASA’s JPL since their launch on Sept. 10, 2011.

The first of the orbiters, Ebb, impacted a predetermined mountain near the lunar north pole at 3:28 p.m., MST, with its twin, Flow, hitting nearby 30 seconds later. Both were traveling at 3,760 mph.

Following a successful primary and secondary science mission of mapping the gravity of the moon, the washing machine-sized spacecraft were nearly out of fuel. JPL and Lockheed Martin worked together to send both spacecraft to the surface in a controlled manner at a known location.

“During this extended science campaign, the orbits were reduced to astonishing low altitudes. In some instances, the spacecraft flew less than 1.25 miles above the lunar topography,” said Stu Spath, GRAIL program manager at Lockheed Martin Space Systems Company. “These low trajectories have provided increased science visibility into the moon’s impact craters and other crustal features. Today marks a bittersweet end to a great mission.”

The GRAIL primary mission yielded the highest-resolution gravity field map of any celestial body. Future gravity field models developed from data collected during the extended mission will be of even higher resolution. The map will provide a better understanding of how the moon, Earth and other terrestrial planets in the solar system formed and evolved.

NASA’s Jet Propulsion Laboratory, Pasadena, Calif., manages the GRAIL mission. The Massachusetts Institute of Technology, Cambridge, is home to the mission’s principal investigator, Dr. Maria Zuber. The GRAIL mission is part of the Discovery Program managed at NASA’s Marshall Space Flight Center in Huntsville, Ala.

 




All of this week's top headlines to your email every Friday.


 
 

 

Headlines March 23, 2015

News: Obama says more troops will stay in Afghanistan next year - President Obama March 24 formally abandoned his pledge to bring U.S. troop levels in Afghanistan down to 5,000 by the end of this year, saying the current force of about 10,000 will remain there into 2016.   Business: U.S. special ops to sole-source 2,000...
 
 

News Briefs March 25, 2015

Pentagon notifying U.S. troops named by alleged IS hackers The Pentagon said March 23 it is notifying 100 U.S. military members that their names and addresses were posted on the Internet by a group calling itself the Islamic State Hacking Division. The group said it was posting the information, including photos of the individuals, to...
 
 
Courtesy photograph

Lockheed Martin acquires high-speed wind tunnel, plans upgrades

Courtesy photograph A RATTLRS cruise-missile inlet undergoes testing at the High Speed Wind Tunnel at Lockheed Martin Missiles and Fire Control in Grand Prairie. Lockheed Martin recently purchased the facility and plans numerou...
 

 
Lockheed Martin photograph by Andrew McMurtrie

Off they go: Three more C-130Js delivered

Lockheed Martin photograph by Andrew McMurtrie March 19, a U.S. Air Force crew took delivery of and ferried an MC-130J Commando II Special Operations tanker aircraft that is assigned to Air Force Special Operations Command’s ...
 
 

Northrop to provide DIRCM for Canadian Chinook fleet

Northrop Grumman has been selected by the Royal Canadian Air Force to provide infrared missile protection on its fleet of CH-147F Chinooks. “Battle-tested in the harshest conditions and in use around the world, Northrop Grumman’s infrared countermeasure systems have been protecting warfighters for more than 50 years,” said Carl Smith, vice president, infrared countermeasures, ...
 
 

UTC Aerospace awarded contract for surface ship sonar domes

UTC Aerospace Systems has received a contract from the Naval Surface Warfare Center – Crane, Indiana, to provide sonar domes for surface combat ships. The five-year indefinite delivery, indefinite quantity contract is valued at up to $39 million and covers deliveries through 2020 to the U.S. Navy and foreign military sales. In addition to the...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>