Space

February 1, 2013

Northrop Grumman completes all flight optics for NASA’s James Webb Space Telescope with delivery of the aft-optical system

REDONDO BEACH, Calif. – Northrop Grumman accepted delivery of the aft-optical system from teammate Ball Aerospace, marking the completion of all flight optics for NASA’s James Webb Space Telescope.

Northrop Grumman is under contract to NASA’s Goddard Space Flight Center in Greenbelt, Md., for the design and development of the Webb Telescope’s optics, sunshield and spacecraft.

The AOS is a precision beryllium rectangular optical bench that houses the tertiary mirror and the fine steering mechanism installed at the center of the Webb Telescope’s primary mirror. The AOS is surrounded by a shroud to eliminate stray light and two large radiator panels to keep the assembly cold. This subsystem collects and focuses the light from the secondary mirror and feeds it into the science instruments.

“Our teammates at Ball Aerospace have done an excellent job on all of the optical elements, including the testing and completion of the aft-optical system,” said Scott Texter, Webb Optical Telescope Element manager for Northrop Grumman Aerospace Systems.

Since May 2012, the AOS has undergone a series of thermal, vibration and cryogenic testing to demonstrate that it can withstand the rigorous vibration environment of launch and remain precisely aligned to function at extremely cold temperatures in space. The system successfully completed all performance testing earlier this month.

“This was a unique technical challenge, requiring unprecedented fabrication and testing of the mirrors to ensure operation at the cryogenic temperature of 40 Kelvin,” said Texter.

The AOS will remain at Ball Aerospace to be used in integrated testing with the flight actuator drive unit. The team will finish building the cryogenic electronics that control the mirrors and the source plate assembly that is used to test the complete Optical Telescope Element for the Webb Telescope.




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


 
 

 

Headlines October 24, 2014

News: U.S., South Korea delay transfer of wartime control - The U.S. and South Korea have delayed transferring wartime operational control of allied forces by taking on a “conditions-based approach” and scrapping the previously set deadline of 2015.   Business: Exclusive: Lockheed, Pentagon reach $4 billion deal for more F-35 jets - Lockheed Martin and U.S. defense...
 
 

News Briefs October 24, 2014

French moving troops toward Libyan border A top French military official says the country is moving troops toward the Libyan border within weeks and, along with U.S. intelligence, is monitoring al Qaeda arms shipments to Africa’s Sahel region. A French base will go up within weeks in a desert outpost just a hundred kilometers (60...
 
 
Navy photograph

Navy to commission submarine North Dakota

Navy photograph The PCU North Dakota (SSN 784) during bravo sea trials. The crew performed exceptionally well on both alpha and bravo sea trials. The submarine North Dakota is the 11th ship of the Virginia class, the first U.S....
 

 

Boeing announces SF Airlines order for Boeing converted freighters

Boeing announced Oct. 23 that SF Airlines has placed an order for an undisclosed number of 767-300ER passenger-to-freighter conversions (Boeing Converted Freighters). SF Airlines, a subsidiary of Shenzhen, China-based delivery services company SF Express, will accept its first redelivered 767 in the second half of 2015. “SF Express aims to become China’s most respected and...
 
 
LM-C130

Another Super Herc Little Rock Rollin’

  Lockheed Martin delivered another C-130J Super Hercules to the 61st Airlift Squadron at Little Rock Air Force Base, Ark., Oct. 23. Little Rock AFB’s new C-130J was ferried from the Lockheed Martin Aeronautics facility ...
 
 

United Technologies beats third quarter profit expectations

United Technologies Corp. Oct. 23 reported third-quarter profit of $1.85 billion as sales increased across all its businesses and the aerospace giant reported favorable tax settlements. The Hartford, Conn.,-based company said it had profit of $2.04 per share and earnings, adjusted for non-recurring gains, came to $1.82 per share. The results topped Wall Street expectations,...
 




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>