Business

September 4, 2012

Aerojet Propulsion Systems to maneuver radiation belt storm probes

Aerojet announced Aug. 30 that United Launch Alliance’s Atlas V successfully lofted NASA’s twin Radiation Belt Storm Probes on a two-year mission to explore the Van Allen belts.

Each RBSP relies on an Aerojet integrated propulsion system that will be used throughout the mission to position the satellites.

The Atlas V launching RBSP also used eight Aerojet retro-rockets to separate the Centaur upper stage from the Atlas, and 12 monopropellant hydrazine thrusters on the Centaur upper stage for roll, pitch, yaw and settling burns.

Aerojet’s RBSP propulsion systems use monopropellant hydrazine and each system includes three propellant tanks, eight Aerojet MR-103G 0.2 lbf thrusters, two Aerojet-built diode boxes, and a variety of other components including, tubing, thermal control and telemetry. The systems were designed, built, assembled and tested at Aerojet’s Redmond, Wash. facility and shipped to Johns Hopkins University Applied Physics Laboratory in October 2010. JHU/APL and Aerojet also have added additional shielding to protect the satellites from the radiation they expect to experience during the mission.

“The Radiation Belt Storm Probes will essentially be in harm’s way as we seek to understand the dynamics of the high energy protons that can damage instruments and be a hazard to astronauts,” said Aerojet Vice President of Space and Launch Systems, Julie Van Kleeck. “Understanding the radiation belt environment and its variability has extremely important practical applications to spacecraft operations, spacecraft system design, mission planning and astronaut safety. The Aerojet team is confident our propulsion system will help deliver another mission success for NASA.”

The two RBSP spacecraft will operate in nearly identical eccentric orbits. The orbits cover the entire radiation belt region and the two spacecraft will lap each other several times over the course of the mission. The RBSP in situ measurements will compare the effects of various proposed mechanisms for charged particle acceleration and loss.

While it was once thought that the behavior of the radiation belts was well-understood, observations over the last decade have generated new questions about the physical processes involved in the enhancement and decay of the belts and in the formation of new ones.

 




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


 
 

 

News Briefs August 18, 2014

New U.S. strikes in Iraq include land-based bombers The latest round of U.S. airstrikes in Iraq against the Islamic State extremist group includes the first reported use of land-based bombers in the military campaign. U.S. Central Command says a combination of bombers, fighter jets, attack planes and unmanned drones hit targets near Iraq’s largest dam...
 
 

Headlines August 18, 2014

News NATO would respond militarily to Crimea-style infiltration: general If Russia tries to infiltrate troops into a NATO country, even out of official military uniform as it did before it annexed Ukraine’s Crimea, NATO will respond militarily, the alliance’s top commander said in an interview published Aug. 17. http://www.reuters.com/article/2014/08/17/us-ukraine-crisis-breedlove-i...
 
 

U.S. Navy to test, evaluate Lockheed Martin industrial exoskeletons

Lockheed Martin has received a contract through the National Center for Manufacturing Sciences for the U.S. Navy to evaluate and test two FORTIS exoskeletons. This marks the first procurement of Lockheed Martin’s exoskeletons for industrial use. Terms of the contract were not disclosed. The FORTIS exoskeleton is an unpowered, lightweight exoskeleton that increases an operator’s...
 

 

Orbital completes third cargo delivery mission to ISS

Orbital Sciences Corporation, one of the world’s leading space technology companies, announced Aug. 18 the successful completion of its third cargo delivery mission to the International Space Station in the past 10 months, including the initial demonstration flight completed in October 2013 and the first two operational missions under the company’s $1.9 billion Commercial Resupply...
 
 

Brown extends tax credit to Northrop Grumman

California Gov. Jerry Brown has signed legislation that extends a $420 million state tax credit to aerospace giant Northrop Grumman after approving a similar deal for its competitor, Lockheed Martin. Brown’s office announced Aug. 15 that he signed SB718 by Sens. Richard Roth, D-Riverside, and Sen. Stephen Knight, R-Palmdale. It expands an aerospace tax credit...
 
 
Air Force photograph by SSgt. Sean Martin

Bomber crews showcase take-off talents

https://www.youtube.com/watch?v=F_8qr7ojpWg&feature=player_embedded Air Force photograph by SSgt. Sean Martin A B-52H Stratofortress starts its engines during a Minimum Interval Takeoff on Barksdale Air Force Base, La., Au...
 




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>