For anyone not familiar the aircraft in reference is commonly known as the Gimli Glider. Lots of information in the web about what happened but short version is large aircraft are fueled usually by weight. There was mistake in the conversion used. It should have been done in kilograms per liter for the 767 but was done in pounds per liter. Approximately 2.2 pounds per liter for water, 1 pound per kilogram. It all varies based on the density of the liquid so jet A would be a bit different, about .8 pounds per kilogram if I remember my college correct. Anyway, the fuel on board was less than half what they thought they had.?
There's more to the series of errors that led to the incident but that's the basics.?
Ryan?
On Dec 23, 2023 at 6:05?PM -0500, Gerald Feldman <gfeldman2904@...>, wrote:
Dave,
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It all comes down to how long and how much one uses the unit.? (Fortunately, time is the same unit in both systems, and a second in imperial is the same as a second in metric.)? For single units of length and mass (volume can be derived from mass or length), I can work equally well in both imperial and metric because I¡¯ve used both since I was a child and ?have a pretty good idea of inches, pounds, and pints, as well as of meters, kilograms, and liters. ?What gives me headaches are combined or derived units, such as those for speed or pressure.? I¡¯ve had a whole lifetime to learn how fast some number of miles per hour is by looking at a car¡¯s speedometer, but the metric equivalent has only recently showed up on speedometers.? I also know that my car¡¯s tire pressure is about 30 pounds per square inch, but have no clue when I see pressure expressed in kilograms per square meter or better yet in newtons per square meter or in pascals.? ?
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Jerry F.
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It is only for watching TV.
When get down to the real world then calculations?
FYI If you see temperature of 50¡ãC it is HOT ? and 20¡ãC not to bad of day.
Dave?
Gerald Feldman
2:51am? ?
Dave,
?
I¡¯m sure you know it doesn¡¯t work that way! Reality is reality. We have enough trouble trying to get kids to understand the actual conversion so this would really mess them up and confuse them.? ?
Jerry F.
