Sale of Incandescent Bulbs to End on Tuesday?
"Cynic" wrote in message
...
On Sat, 29 Aug 2009 15:17:58 +0100, Cherry Chapstick
wrote:
Spacecraft are potentially the most fuel-efficient mode of transport
in terms of passenger-miles per gallon of fuel.
I don't see any numbers there relating to spacecraft and pm per
gallon. I don't see any information there, either, that can convert
the solid rocket fuel into a 'gallon of fuel' equivalent. Perhaps I
am being short sighted.
You are. A spacecraft can travel forever at millions of miles per
hour on no fuel whatsoever. Therefore it must be *potentially* the
most fuel efficient method of transport. I chucked it in my post as a
semi-humerous observation, but with the serious point that such
comparisons are not always a valid way of looking at things.
--
Cynic
I take your point about *potentially*
A spacecraft can travel for millions of miles in orbit around a planet or it
can drift in space at millions of mile per hour without any power.
A quote from Buzz Aldrin "Apollo 11 managed 7 gallons per inch on lift off"
Imagine nipping down to the shops for a pint of milk with that sort of fuel
use.
Adam
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