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.


 
 

 

Headlines August 26, 2015

News: U.S. F-22s deploying to Europe¬†– Weeks after top Pentagon officials began openly calling Russia the greatest threat to the United States, the Air Force is preparing to deploy the F-22 Raptor to Europe for the first time.   Business: Lockheed pays $4.8 million to settle illegal lobbying claim¬†– Sandia Corp. and parent company Lockheed...
 
 

News Briefs August 26, 2015

160 Marines in Bulgaria with tanks, artillery for training U.S. Marines accompanied by tanks, artillery, and light-armored reconnaissance vehicles have arrived in Bulgaria, part of a plan to train with allies to improve weapons skills and anti-armor tactics. The U.S. Marine Corps Forces said Aug. 25 some 160 Marines accompanied the tanks and artillery, which...
 
 
LM-satellite

Lockheed Martin makes tiny satellite cooling system

Lockheed Martin scientists are packing three times the power density into a key satellite cooling system whose previous design is already the lightest in its class. This project continues the company’s effort to reduce co...
 

 
space-camp

Space Camp: Once in a lifetime experience

PALMDALE, Calif.–Amazing, inspiring and motivating were a few of the words Space Camp graduates Lauren Baker and Ethan Calderone used to describe their experience recent experience at Space Camp. Ethan Calderone, a Palmda...
 
 
Northrop Grumman photograph by Bob Brown

Northrop Grumman delivers telescope structure for James Webb Space Telescope

Northrop Grumman photograph by Bob Brown Northrop Grumman employees preparing the telescope structure, for NASA’s James Webb Space Telescope for shipment to Goddard Space Flight Center in Greenbelt, Md. REDONDO BEACH, Cal...
 
 
Air Force photograph by Tommie Horton

Integration lab to support C-5 software, hardware upgrades

Air Force photograph by Tommie Horton The 402nd Software Maintenance Group has been tasked by the C-5 System Program Office with updating the Warner Robins Air Logistics Complex C-5 System Integration Lab with installation of a...
 




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=""> <s> <strike> <strong>