Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA’s Radiation Belt Storm Probes Ready for Space Environment Tests

07.12.2011
NASA’s Radiation Belt Storm Probes (RBSP), twin spacecraft being built and tested at the Johns Hopkins University Applied Physics Laboratory in Laurel, Md., are about to enter a challenging series of tests designed to certify that they are ready for their August 2012 launch and two-year mission in Earth’s orbit.

The coordinated measurements of the two RBSP spacecraft will advance our understanding of space weather and the sun’s influence on the Earth and near-Earth space by probing the planet’s radiation belts, which affect space weather and spacecraft operations.

Beginning the first week of December, RBSP will embark on a space environment test campaign that will last into March 2012. The RBSP team will subject the spacecraft to physical simulations of the stresses of launch and harshness of space operations, but in a controlled test facility where engineers can monitor the spacecrafts’ condition.

“These are complex spacecraft, each with five very sensitive scientific instruments on board,” says Jim Stratton, mission systems engineer for RBSP at the Applied Physics Lab. “The environmental tests are designed to really subject the spacecraft and systems to realistic, challenging conditions and make sure they are ready to fly.”

The first test will simulate the incredibly loud noises generated during launch and the beginning of supersonic travel, when the launch vehicle passes through the sound barrier (approximately 770 miles per hour). These sounds, which can reach a maximum of 134 decibels (nearly as loud as a jet engine from 100 feet away), will be duplicated by a specialized speaker system that is controlled via computer to match the sonic profiles of launch and supersonic barrier breakthrough. The RBSP satellites will be mated together and placed at the center of a circular wall of powerful loudspeakers for this test.

One of the substantial challenges for the probes is that they must survive launch as a single unit; later, above Earth, they will be separated and guided to their individual orbits.

RBSP will next undergo a vibration test. The spacecraft are mated together again and placed on a special table that will shake them to simulate the intense physical effects of launch, and make sure the probes’ systems and electronics are secure and will operate post-launch.

In January 2012, the spacecraft will undergo an electromagnetic compatibility and interference test. This involves turning on all of the spacecrafts’ internal systems without any external power or grounding to verify there are no electronic issues, and that RBSP can successfully perform its science-gathering mission.

RBSP will enter thermal vacuum testing in APL’s test chambers in February. For five weeks, the craft will endure heating and cooling cycles in a vacuum environment; during the lengthy testing, RBSP will also undergo a 10 day-long mission simulation. After that, in May 2012, the completed RBSP spacecraft are scheduled to leave APL and travel south. “The next six months are all about continuing the tremendous efforts of the outstanding team we have assembled for this mission,” says Rick Fitzgerald, program manager for RBSP at APL, “and getting ready to ship the spacecraft to Florida.”

RBSP is scheduled for launch no earlier than Aug. 15, 2012, from the Kennedy Space Center, Fla. APL built the RBSP spacecraft for NASA and manages the mission. The RBSP mission is part of NASA's Living With a Star program, guided by the Heliophysics Division of the NASA Headquarters Science Mission Directorate in Washington.

The program explores fundamental processes that operate throughout the solar system, in particular those that generate hazardous space weather effects near Earth and phenomena that could affect solar system exploration. Living With a Star is managed by NASA's Goddard Space Flight Center in Greenbelt, Md.

Learn more about the Radiation Belt Storm Probes, and see photos and videos of space environment testing, at http://rbsp.jhuapl.edu.

The Applied Physics Laboratory, a not-for-profit division of The Johns Hopkins University, meets critical national challenges through the innovative application of science and technology.

Geoff Brown | Newswise Science News
Further information:
http://www.jhuapl.edu

More articles from Physics and Astronomy:

nachricht Prediction: More gas-giants will be found orbiting Sun-like stars
22.02.2017 | Carnegie Institution for Science

nachricht NASA's fermi finds possible dark matter ties in andromeda galaxy
22.02.2017 | NASA/Goddard Space Flight Center

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Microhotplates for a smart gas sensor

22.02.2017 | Power and Electrical Engineering

Scientists unlock ability to generate new sensory hair cells

22.02.2017 | Life Sciences

Prediction: More gas-giants will be found orbiting Sun-like stars

22.02.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>