Open Access. Powered by Scholars. Published by Universities.®

Space Vehicles Commons™

Open Access. Powered by Scholars. Published by Universities.®

Articles 271 - 280 of 280

Full-Text Articles in Space Vehicles

Space And Defense – Volume Three – Number Two – Fall 2009, Space And Defense Journal Mar 2020

Space And Defense – Volume Three – Number Two – Fall 2009, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume Three – Number One – Summer 2009, Space And Defense Journal Mar 2020

Space And Defense – Volume Three – Number One – Summer 2009, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume Two – Number Three – Winter 2009, Space And Defense Journal Mar 2020

Space And Defense – Volume Two – Number Three – Winter 2009, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume Two – Number Two – Winter 2008, Space And Defense Journal Mar 2020

Space And Defense – Volume Two – Number Two – Winter 2008, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume Two – Number One – Winter 2008, Space And Defense Journal Mar 2020

Space And Defense – Volume Two – Number One – Winter 2008, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume One – Number One – Fall 2006, Space And Defense Journal Mar 2020

Space And Defense – Volume One – Number One – Fall 2006, Space And Defense Journal

Space and Defense

No abstract provided.


Evaluating The Effectiveness Of Aerospace Materials, Vehicle Shape And Astronaut Position At Lowering The Whole Body Effective Dose Equivalent In Deep Space, Daniel K. Bond Jan 2020

Evaluating The Effectiveness Of Aerospace Materials, Vehicle Shape And Astronaut Position At Lowering The Whole Body Effective Dose Equivalent In Deep Space, Daniel K. Bond

Theses and Dissertations

As future crewed, deep space missions are being planned, it is important to assess how spacecraft design can be used to minimize radiation exposure. Collectively with shielding material, vehicle shape and astronaut position must be used to protect astronauts from the two primary sources of space radiation: Galactic Cosmic Rays (GCR) and Solar Particle Events (SPE). GCRs, which are composed of low intensity, highly energetic, and fully ionized stable and meta-stable isotopes, are considered a chronic source of radiation risk to the astronauts. SPEs, which originate from solar coronal mass ejections, are composed mostly of high intensity protons that can …


Possible Detection Of Low Energy Solar Neutrons Using Boron Based Materials, Nicole Benker, Elena Echeverria, Robert Olesen, Brant E. Kananen, John W. Mcclory, Yaroslav V. Burak, Volodymyr T. Adamiv, Ihor M. Teslyuk, George Glenn Peterson, Ben Bradley, Ethiyal R. Wilson, James C. Petrosky, Bin Dong, Jeffry Kelber, Jennifer Hamblin, Jaques Doumani, Peter A. Dowben, Alex Enders Oct 2019

Possible Detection Of Low Energy Solar Neutrons Using Boron Based Materials, Nicole Benker, Elena Echeverria, Robert Olesen, Brant E. Kananen, John W. Mcclory, Yaroslav V. Burak, Volodymyr T. Adamiv, Ihor M. Teslyuk, George Glenn Peterson, Ben Bradley, Ethiyal R. Wilson, James C. Petrosky, Bin Dong, Jeffry Kelber, Jennifer Hamblin, Jaques Doumani, Peter A. Dowben, Alex Enders

Faculty Publications

Solar neutrons have been detected aboard the International Space Station (ISS), using lithium tetraborate and boron carbide detector elements. We find that evidence of a solar neutron flux, as detected in a neutron calorimeter following subtraction of the proton background, with an energy of about 2 to 4 MeV. This solar neutron flux is likely no more than 250 to 375 neutrons cm−2sec−1, with a lower bound of 50–75 neutrons cm−2sec−1 at one au.


Trends. The Cassini Mission To Saturn: Plutonium As Propaganda, Ibpp Editor Sep 1997

Trends. The Cassini Mission To Saturn: Plutonium As Propaganda, Ibpp Editor

International Bulletin of Political Psychology

The author discusses the plutonium-carrying Cassini mission to Saturn.


Total Hemispherical Emittance Of Niobium-1% Zirconium Fuel Cladding For The Sp-100 Space Reactor, John E. Thomason Iii Dec 1992

Total Hemispherical Emittance Of Niobium-1% Zirconium Fuel Cladding For The Sp-100 Space Reactor, John E. Thomason Iii

Theses and Dissertations

Total hemispherical emittance was measured for the SP-100 reactor fuel cladding alloy (Nb-l% Zr). Based on a standard test method (ASTM C 835-82), experiments were conducted on a reference sample of oxidized stainless steel and then on a sample of actual cladding. The sample is heated in a vacuum by passing DC current through it until reaching equilibrium. Measurements are made of the electrical power dissipated in the sample and of the surface temperature. Using the Stefan-Boltzmann Law and some key assumptions concerning conductive and radiative heat transfer, the measured quantities are used to calculate emittance. Calculated values for unoxidized …