Radiation transport and shielding for space exploration and high speed flight transportation

final report on NAG1-1789
  • 0.89 MB
  • English
National Aeronautics and Space Administration, National Technical Information Service, distributor , [Washington, DC, Springfield, Va
Radiation transport., Shielding., Space exploration., Transportation., Nuclear reactions., Ions., Neutrons., Nuclear power plants., Absorption cross sections., High s
Statementprincipal investigator, Khin Maung Maung.
SeriesNASA contractor report -- NASA CR-206460.
ContributionsUnited States. National Aeronautics and Space Administration.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL15543558M

Get this from a library. Radiation transport and shielding for space exploration and high speed flight transportation: final report on NAG [Khin Maung Maung; United States.

National Aeronautics and Space Administration.].

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Title: Radiation Transport and -High Speed Flight Transp9Ft-a#6fl~for Space Exploration and High Speed Flight Transportation Principal Investigator: Senior Scientist: Institution: Dr. Khin Maung Maung Dr. Trapathi Department of Physics Hampton University Transportation of ions and neutrons in matter is of direct interest in several.

REVOLUTIONARY CONCEPTS OF RADIATION SHIELDING FOR HUMAN EXPLORATION OF SPACE 1. INTRODUCTION At the request of NASA Headquarters, code UG, a workshop was held at Marshall Space Flight Center (MSFC) to assess a list of “Revolutionary Physical Sciences Radiation Protection Strategies,” ( by:   • Space Radiation Hazards and the Vision for Space Exploration, National Academy Press, Physical Shielding Concepts.

For space missions, shielding is the first line of defense against the radiation environment. The purpose of shielding is to reduce exposure so that the cumulative total is below permissible limits, ideallyFile Size: 1MB.

well-defined criteria using probabilistic models of space radiation cancer risks. Exposures to astronauts from GCRs made up of high-energy protons and high charge and energy (HZE) nuclei, and solar particle events (SPEs) comprised largely of low- to medium-energy protons, are a critical challenge for space exploration.

A roundtrip Mars mission would require between and 1, days of deep-space travel, making radiation protection a priority and explaining why NASA mounted the recent challenge. Contacts: Steve Roy, Marshall Space Flight Center Delores Beasley, NASA Headquarters William Jeffs, Johnson Space Center.

Advances in radiation shielding technologies are needed to protect humans from the hazards of space radiation during NASA missions.

All space radiation environments in which humans may travel in the foreseeable future are considered, including low Earth orbit (LEO), geosynchronous orbit (GEO), Moon, Mars, and the Asteroids. JSC SPACE RADIATION CANCER RISK PROJECTIONS FOR EXPLORATION MISSIONS: UNCERTAINTY REDUCTION AND MITIGATION FRANCIS A.

CUCINOTTA 1, WALTER SCHIMMERLING2, JOHN W. WILSON3, LEIF E. PETERSON4, GAUTAM D. BADHWAR 1, PREMKUMAR B. SAGANTI1, AND JOHN F. DICELLO5 1NASA, Johnson Space Center, Houston, File Size: KB. NASA Instrument Determines Hazards of Deep-Space Radiation. Novem Deep-space radiation is a significant danger for interplanetary human space flight.

But now an instrument on NASA's Lunar Reconnaissance Orbiter (LRO) has learned more than ever before about the high-energy hazards at and around the moon. Towards a 3D Space Radiation Transport Code High-speed computational procedures for space radiation shielding have relied on asymptotic expansions in terms of the off-axis scatter and replacement of the general geometry problem by a collection of flat : J.

Wilson, R. Tripathi, F. Cucinotta, J. Heinbockel, J. Tweed. 4 Flight Radiation Ptotection Radiation Shielding for Space Travel -- Collection of Important Literature.

is that of heavy, high-speed atomic nuclei. These are very difficult to stop with shielding light enough to be launched, and also biologically very damaging. Space radiation In space; radiation can be defined as energy packages of particles traveling at a very high speed.

Radiation can be divided in two parts ionizing and non ionizing radiation. [1] • Ionizing radiation is radiation with sufficient energy to remove electrons from the.

Description Radiation transport and shielding for space exploration and high speed flight transportation FB2

Human Health and Performance Risks of Space Exploration Missions Chapter 4 Risk of Radiation Carcinogenesis Space radiation is comprised of high-energy protons and high-charge (Z) and -energy (E) nuclei (HZE) whose ionization patterns in molecules, cells, and tissues, and the resulting initial biological insults, are distinct fromFile Size: KB.

On Mars, radiation exposure is considerably less than the exposure in space. Thanks to the shielding provided by the planet itself and its atmosphere, Mars' surface receives 30 microsieverts ( Author: Bas Lansdorp. The GCR Event-based Risk Model (GERM) code is a stochastic model of space radiation transport being developed for new risk assessment approaches.

The GERM code was built on the QMSFRG (quantum multiple scattering fragmentation) model and atomic interaction models used in HZETRN (high-charge and high-energy transport). NASA along with its partners is exploring the possibility of using superconducting magnets to generate magnetic fields around space probes and space habitats to protect them from space radiation and cosmic rays.

“The concept of shielding astronauts with magnetic fields has been studied for over 40 years, and it remains an intractable engineering problem,” says Shayne Westover of Johnson. Radiation protection during space flight.

The rest of the survey is devoted to the rationale for spacecraft radiation shielding calculations. The recently completed long-term space flights indicate the reliability of the radiation safety measures used for the near-Earth space exploration.

While planning long-term interplanetary flights, it Cited by:   M J September 8th, This is a really poor discussion of the radiation problem. 1) by no means do they rely on aluminum alone or on mass alone.

On the contrary: for shielding from neutrons they deliberately use lighter atoms to do the shielding; even for fast protons (the most common form of space radiation),light molecules are used to deprive the incoming photons of more kinetic energy.

I am trying to estimate required shielding masses to maintain a radiation level at or below earths average radiation of 3 mSv per year at different earth orbits (LEO, MEO, GEO and km+). Initially I reverse engineered the radiation estimation method used to compute the estimated received radiation for the apollo mission to determine the.

Outside of the solar system, things change quite a solar wind actually creates a kind of "bubble" around the Sun, called the heliosphere, which acts a bit like a magnetic shield against the rest of the the border of the heliosphere is a rather confused situation about which much is theorized but little is known; the Voyager 1 probe is currently moving through it.

Radiation Hazard for Deep Space Human Exploration T.C. Slaba, M.S. Clowdsley NASA Langley Research Center, Hampton, VA 7th Space Weather and NASA Robotic Mission Ops Workshop SeptemberGoddard Space Flight Center. Spaceflight (or space flight) is ballistic flight into or through outer light can occur with spacecraft with or without humans on board.

Yuri Gagarin of the Soviet Union was the first human to conduct a spaceflight. Examples of human spaceflight include the U.S.

Apollo Moon landing and Space Shuttle programs and the Russian Soyuz program, as well as the ongoing International Space. Composition of space radiation. While in space, astronauts are exposed to radiation which is mostly composed of high-energy protons, helium nuclei (alpha particles), and high-atomic-number ions (), as well as secondary radiation from nuclear reactions from spacecraft parts or tissue.

The ionization patterns in molecules, cells, tissues and the resulting biological effects are distinct from. As NASA continues to form plans for long duration exploration, it has also become clear that the ability to mitigate the risks posed to both crews and vehicle systems by the space weather environment is also of central importance.

Advances in radiation shielding systems technologies are needed to protect humans from all threats of space radiation.

Fortunately, scientists at CERN have announced they are working on a solution to this very problem. In collaboration with the European Space Radiation Superconducting Shield (SR2S) project, CERN is developing a superconducting magnetic shield that can protect a spacecraft and its occupants from cosmic rays during deep-space missions.

The shield will repurpose one of the. Revolutionary advances in radiation shielding materials and structures technologies are needed to protect humans from the hazards of space radiation during NASA missions.

All radiation species are considered, including particulate radiation (electrons, protons, neutrons, alpha particles, light ions, heavy ions, etc.) and including.

Details Radiation transport and shielding for space exploration and high speed flight transportation FB2

The radiation hazard for astronauts from galactic cosmic rays (GCR) is a major obstacle to long-duration human space exploration. Space radiation transport codes have been developed to calculate. The doses of unshielded radiation are extremely high: if a spaceship’s speed exceeds c, an astronaut cannot be outside the hull without proper windward shielding even wearing a space suit.

A break in the curve at β = c in Fig. 1b corresponds to a ship’s velocity when. Shielding the climber from the space radiation with aluminum would require approximately 18 × 10 3 kg of the material to shield a compartment about the size of the early space capsules.

Shielding with a magnetic field would require an extremely large current which would be impossible with resistive materials such as by: 3. The space radiation environment is significantly different from that found terrestrially. Space radiation primarily consists of high-energy charged particles, such as protons, alpha and heavier particles, originating from several sources, including galactic cosmic radiation, energetic solar particles from solar flares and trapped radiation belts.Full text of "The Looming Problem; Radiation Shielding for Space Travel -- Collection of Important Literature" See other formats.The physical basis of radiation protection in space is comprehensively reviewed by Durante and Cucinotta ().

The penetrating ability of cosmic radiation is discussed in detail in current.