Accession Number:

AD0669451

Title:

PUBLIC HEALTH ASPECTS OF GALACTIC RADIATION EXPOSURE IN SUPERSONIC TRANSPORT,

Descriptive Note:

Corporate Author:

NAVAL AEROSPACE MEDICAL INST PENSACOLA FLA

Personal Author(s):

Report Date:

1968-03-19

Pagination or Media Count:

16.0

Abstract:

The prospect of large-scale commercial passenger transportation at SST altitudes in the lower stratosphere calls for an accurate assessment of the galactic radiation exposure. Highest radiation levels prevail at high latitudes polar region and solar minimum and reach about 1 milliremhour at 65,000 feet. The accumulated dose of 0.6 remyear which an SST crew member spending 600 hoursyear at altitude would receive exceeds the Maximum Permissible Dose MPD for Members of the Public and would classify crew members as Radiation Workers in terms of official recommendations. The assumption of 50 SST each exposing 200 passengers to 1000 hoursyear at SST altitude would lead to a population dose about equal to the contribution from industrial radiation workers, with both exposures ranking well below the two largest man-made additions to the natural background, medical use of x-rays and fallout. The heavy flux is attenuated to 3 per cent or less at 65,000 feet, depending on the nuclear species yet, only 0.1 per cent of this residual flux accounts for maximum ionization hits. That means the microbeam hazard of heavy nuclei is insignificant at SST altitudes. Author

Subject Categories:

  • Civilian Aircraft
  • Radiobiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE