Abstract There are obvious risks in space travel that have loomed larger than any risk from radiation. Nevertheless, NASA has maintained a radiation program that has involved maintenance of records of radiation exposure, and planning so that the astronauts' exposures are kept as low as possible, and not just within the current guidelines. These guidelines are being reexamined currently by NCRP Committee 75 because new information is available, for example, risk estimates for radiation-induced cancer and about the effects of HZE particles. Furthermore, no estimates of risk or recommendations were made for women in 1970 and must now be considered. The current career limit is 400 rem to the blood forming organs. The appropriateness of this limit and its basis are being examined as well as the limits for specific organs. There is now considerably more information about age-dependency for radiation effects and this will be taken into account. In 1973 a committee of the National Research Council made a separate study of HZE particle effects and it was concluded that the attendant risks did not pose a hazard for low inclination near-earth orbit missions. Since that time work has been carried out on the so-called microlesions caused by HZE particles and on the relative carcinogic effect of heavy ions, including iron. A remaining question is whether the fluence of HZE particles could reach levels of concern in missions under consideration. Finally, it is the intention of the committee to indicate clearly the areas requiring further research.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Approaches to radiation guidelines for space travel


    Beteiligte:
    Fry, R.J.M. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 4 , 10 ; 121-130


    Erscheinungsdatum :

    01.01.1984


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Travel Forecasting Guidelines

    P. Bass / D. G. Perkinson / B. Keitgen et al. | NTIS | 1994


    Radiation protection guidelines for space activities

    Fry, R. J. M. / International Academy of Astronautics | British Library Conference Proceedings | 1994


    Radiation protection guidelines for space activities

    Fry, R.J.Michael | Online Contents | 1994


    Effects of Space Radiation on Human Space Travel and Colonization

    Muscat, E. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2009