SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Functional evaluation of blood circulation and use in selecting and training flying personnel
Response bias of flying personnel to time shift
Dynamics of corticosteroid excretion by flying personnel following activity involving stress
Radiation components and dose equivalents due to galactic and solar cosmic rays in the high atmosphere, especially at SST altitudes, are presented. The dose equivalent rate for the flight personnel flying 500 hours per year in cruise altitudes of 60,000-65,000 feet (18-19.5 km) in high magnetic latitudes is about 0.75-1.0 rem per year averaged over the solar cycle, or about 15-20 percent of the maximum permissible dose rate.
Results of an experimental and theoretical study on dose equivalent rates at high altitudes are presented. The flight personnel flying 500 hours per year at SST cruise altitude in high latitudes (maximum of radiation) would be exposed to less than 14% of the maximum permissible dose rate (MPD) for radiation workers (5 rem/yr), averaged over the solar cycle. One-half or more is due to energetic secondary neutrons that are penetrant and highly biologically effective. Passengers would, in general, be exposed only to the low-level galactic cosmic rays, except for a relative few who encounter rare, intense, and energetic solar-particle events. If the airplane descends to subsonic altitudes during events such as that of Feb. 23, 1956 - the most intense and unique giant energy event of the last 35 years - passenger exposure even then remains at or below permissible levels (0.5 rem for the general population). Systems of radiation monitoring are briefly discussed which will prevent false alarms and which would be useful in disproving overexposure in potential malpractice suits against the airlines. In subsonic jet transports the exposure of the crews is lower by a factor 3 to 4; for passengers it is about the same for the same distance traveled. Solar events, except for giant energy events, will yield only a minor fraction of the MPD of the general population.
Medical examinations of flight personnel
Testing hearing by using speech audiometry to determine word group perception in fitness examinations of flight personnel
Changes in vectorcardiogram of flight personnel in early stages of hypertension
Electrocardiogram changes in flight personnel after prolonged nonstop flights in turboprop aircraft
Electroencephalographic examination of performance of personnel during long flights
Performance and physiological responses of pilots in simulated low-altitude high speed flight
Psychophysiological characteristics of instrument flying
Instantaneous heart acceleration during x-15 aircraft flight
Sinusitis incidence in aviators as related to age and barotrauma exposure
Automated and manual implementation concepts for supersonic transport activities and implications for flight and ground crews
Reliability and prognostic validity of serial electrocardiograms in men over 24 year period, and relationship of observed changes to pathological or physiological variables
Nyctometric studies and effect of vestibular excitation on dark adaption