Posts Tagged ‘susan sun’

20 August

The Most Intensely Heated & Dangerous Relationship Research Project:Improving Earth’s Future Environment-Radiation Belt Storm Probes (RBSP) & Green Fuels

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Dear Friends, Visitors/Viewers/Readers,

(Please click on red links below)

Due to our previous series of discussion concerning Mars Science Lab-Curiosity Rover and its fuel source, I got curious and looked up the next launch/mission scheduled at NASA and found RBSP, Radiation Belt Storm Probes.

RBSP probe with booms and instrument arrays extended (Credit: JHUAPL)

RBSP is scheduled to launch on Friday, August 24, 2012, 4:07-4:27 a.m. EDT (delayed by 24 hours from the previously scheduled August 23, 2012) and is a NASA mission under the Living With a Star geospace program (managed by Goddard Space Flight Center in Greenbelt) to explore fundamental processes that operate throughout the solar system (in particular, those that generate hazardous space weather effects near the Earth and phenomenon that could affect solar system exploration).  The Johns Hopkins University Applied Physics Lab (JHUAPL) manages the mission and is building and will operate the RBSP spacecraft for NASA.  The probes will study dynamic regions of space known as the Van Allen Radiation Belt

RBSP mission will study the Van Allen Radiation Belt (Credit: JHUAPL)

that surround Earth.

Van Allen Radiation Belts are the result of interaction of the Sun and the Earth's magnetic field (Credit: JHUAPL)

The two RBSP leaving Earth (Credit: JHUAPL)

Understanding the radiation belt environment and its variability has important practical applications in the areas of spacecraft operations, spacecraft system design, mission planning, and astronaut safety.  I implore/welcome your clicking of red links above for better understanding of Van Allen Radiation Belt and these programs. Also, please view the video below explaining Radiation Belt Storm Probe by NASA project scientist David Sibeck:


 

The Van Allen Radiation Belt swell and shrink over time as part of a much larger space weather system driven by energy and material that erupt off the Sun’s surface and fill the entire Solar System. Space weather is the source of aurora that shimmer in the night sky, but it also can disrupt satellites, cause power grid failures and disrupt GPS communications. RBSP will help scientists to understand this region and to better design spacecraft that can survive the rigors of outer space.   The mission is to gain scientific understanding of how populations of relativistic electrons and ions in space form or change in response to changes in solar activity and the solar wind.With the help of Wikipedia, one finds that the mission’s general scientific objectives are to:

  1. Discover which processes – singly or in combination – accelerate and transport the particles in the radiation belt, and under what conditions.
  2. Understand and quantify the loss of electrons from the radiation belts.
  3. Determine the balance between the processes that cause electron acceleration and those that cause losses.
  4. Understand how the radiation belts change in the context of geomagnetic storms.

RBSP consists of two spin-stabilized spacecraft to be launched with a single Atlas V rocket. The two probes

Details of RBSP (Credit: JHUAPL)

Two RBSP's separating after launch (Credit: JHUAPL)

must operate in the harsh conditions they are studying; while other satellites have the luxury of turning off or protecting themselves in the middle of intense space weather, RBSP must continue to collect data. The probes have, therefore, been built to withstand the constant bombardment of particles and radiation they will experience in this intense area of space.

I am also happy to report that no plutonium-238 will be used for Atlas V rocket (using kerosene, liquid oxygen, liquid hydrogen) or RBSP probes.  As a matter of fact, NASA intends to eventually replace the highly toxic fuel hydrazine by starting a new era of innovative and non-toxic green fuels that are less harmful to our environment, with fewer operational hazards and lower complexity and cost of launch processing.  For more detailed information about these future “green” propellant technology, please refer to this link (<– click)

~have a bright and sunny day~

Gathered, written, and posted by sunisthefuture-Susan Sun Nunamaker, sunisthefuture@gmail.com
Homepage: http://www.sunisthefuture.net


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2 April

What Is Solar Cell (4)

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If you are in favor of renewable/CLEAN energy, please sign the petition page showing support for FIT/CLEAN Program at http://sunisthefuture.net/?page_id=1065 Thank you.

It is wonderful that solar industry is growing exponentially and many conscientious educators and scientists of our planet are all working together to ensure us earthlings to have a smooth transition into the Renewable and Clean Energy Age.  I cannot emphasize enough that Sun Is The Future for human kind for its abundance/availability, cleanliness, safety, and the fact that it is free.   This next clip by Hilaroad will take us from the elemental stage of silicon to the completion of solar module/panel.  The explanations are succinct and  clear.  Once you’ve completed viewing the clip, feel free to go over it again for better recall.

http://www.youtube.com/watch?v=Caf1JIz4X2I&feature=related or click below:

 

 

Now, please look over these questions below. If you are uncertain about any of these questions, please feel free to go over the clip again for better understanding or recall.

1. Object at right angle to sun’s rays is receiving energy at approximately  the rate of _____J/sec/m2 ?

2. Solar cell manufacturers use_____crystal to make solar cell ?

3. How many valence electrons are there in a silicon atom ?

4. Which elements can be added to silicon, according to this clip ?

5. What are N-layer and P-layer of a photovoltaic cell and how are they created?

6. _____energizes electron in N-layer and attracted through a conductor to P-layer ?

7. What is the negative and positive terminal of the solar cell ?

8. How do you produce higher voltage and current using solar cells?

 

Posted by sunisthefuture-Susan Sun Nunamaker, sunisthefuture@gmail.com

Homepage: http://sunisthefuture.net http://sunisthefuture.com http://sunisthefuture.org
Any comments and suggestions are welcomed at sunisthefuture@gmail.com

Please also get into the habit of checking at these sites below for more on solar energy topics:

www.sunisthefuture.net

www.youtube.com/user/sunisthefuture

www.kiva.org/team/sunisthefuture

www.facebook.com/sunisthefuture

www.pinterest.com/sunisthefuture

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2 April

What Is Solar Cell (3)

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If you are in favor of renewable/CLEAN energy, please sign the petition page showing support for FIT/CLEAN Program at http://sunisthefuture.net/?page_id=1065 Thank you.

Yes, I have more in store for you! Here is the third episode of our discussion on “What Is Solar Cell”.

Now, to help refresh our memory of an earlier presentation and demonstration on March 10, 2011, “How Do You Measure the Power Produced by Solar Cells”, please recall that in a series circuit, the current through each of the components of the circuit is the same, voltage across the components is the sum of the voltages across each component. Whereas for a parallel circuit, the voltage across each of the components is the same and the total current is the sum of the current through each component. Please feel free to refer to the post on March 10, 2011, for diagrams of these circuits. Keep in mind that additive voltage results when solar cells are connected in series while higher current results when connecting solar cells in parallel.

Our next clip is at     http://www.youtube.com/watch?v=B8zEBrH2bPU&amp;feature=related or simply click below:

 

Keep in mind that solar modules/panels may be interconnected in series or parallel or both to create an array with the desired peak DC voltage and current.

More will continue in “What Is Solar Cell (4)”.   Please feel free to leave your comments, questions, or email me at sunisthefuture@gmail.com

Remember we are all working together toward a better and brighter tomorrow!

Posted by sunisthefuture-Susan Sun Nunamaker
Homepage: http://sunisthefuture.net http://sunisthefuture.com http://sunisthefuture.org
Any comments and suggestions are welcomed at sunisthefuture@gmail.com

Please also get into the habit of checking at these sites below for more on solar energy topics:

www.sunisthefuture.net

www.youtube.com/user/sunisthefuture

www.kiva.org/team/sunisthefuture

www.facebook.com/sunisthefuture

www.pinterest.com/sunisthefuture

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2 April

What Is Solar Cell (2)

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If you are in favor of renewable/CLEAN energy, please sign the petition page showing support for FIT/CLEAN Program at http://sunisthefuture.net/?page_id=1065 Thank you.

Hi, friends and readers, this is the part  (2) of our discussion on “What Is Solar Cell”.

As I have previously promised you all, here are some excellent clips or demonstrations that would help to increase our understanding of the basic principles behind solar cells and solar modules.  Allow me to thank the Solar Schoolhouse for having made these clips possible for us.

The first clip is at http://www.youtube.com/watch?v=i6htYGp1rus or simply click below:


What Is Solar Cell (3) will continue in my next post.  Stay tuned for more demonstration clips.

Please feel free to leave your comments, questions, or email me at sunisthefuture@gmail.com

Remember we are all working together toward a better and brighter tomorrow!

Posted by sunisthefuture-Susan Sun Nunamaker, sunisthefuture@gmail.com
Homepage: http://sunisthefuture.net http://sunisthefuture.com http://sunisthefuture.org
Any comments and suggestions are welcomed at sunisthefuture@gmail.com

Please also get into the habit of checking at these sites below for more on solar energy topics:

www.sunisthefuture.net

www.youtube.com/user/sunisthefuture

www.kiva.org/team/sunisthefuture

www.facebook.com/sunisthefuture

www.pinterest.com/sunisthefuture

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Google+

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