At 07:39 PM 17/05/2012, you wrote:
For all the airline pilots out there: With the 787 being a mostly
carbon fuselage, anyone know what the increase in radiation dose is
to crew and passengers. The old ali jets would have filtered
(attenuated) some rays but carbon is totally radiolucent. Anyone
ever questioned this?
Jim
AFAIK aluminium is terrible. It creates lots of high energy
secondaries from the initial cosmic ray (Spalling).
Low atomic weight is usually desirable for radiation protection.
Hydrogen in the form of water or plastics like polyethylene (which
also has lots of carbon atoms) is good.
With high altitude aircraft, X-rays aren't the problem. Cosmic
rays(solar protons) and higher atomic weight nucleii from galactic
cosmic rays are.
Mike
Borgelt Instruments - design & manufacture of quality soaring
instrumentation since 1978
www.borgeltinstruments.com
tel: 07 4635 5784 overseas: int+61-7-4635 5784
mob: 042835 5784 : int+61-42835 5784
P O Box 4607, Toowoomba East, QLD 4350, Australia
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