Jim McVracken asked in USMA 14068
>Greetings All,
>
>The Metric Program needs to find a source (or sources) for information on
>the "base-line" measurement units used to build airplanes. I know there are
>aviation knowledgeable subscribers to this list. Any leads today would be
>helpful.
>
>Now that is a generally vague category, so more specifically, beyond the
>general assumption that all American-made aircraft are built to I-P
>specifications, are there places to find out about the base-line
>measurement system of large-capacity commercial aircraft made by foreign
>aviation companies, the base-line measurement system used in the
>manufacture of the medium- and small-sized commercial aircraft used by many
>commuter/connector airlines, and the base-line measurement system used in
>manufacturing the many non-American aircraft build for the private aviation
>community.
>
>Also, are all helicopters mad by American aviation companies built to I-P
>specifications? What about the base-line measurement system used for the
>manufacture of all the many other brands of helicopters made throughout the
>world.
>
>Thanks,
>
>Jim McCracken
>NIST Metric Program
I have just located a page of Aerospatiale that gave specifications of
their Airbus A340 lines. Although I accessed the French page, all the
specifications were given in feet, pounds and US gallons. That does not
prove that the Airbus line was designed in I-P units, but merely that I-P
units were used in the WWW page to enable comparison to be made with
competing US products. See
http://www.eads-nv.com/xml/fr/businet/airbus/airbusfam/a340/ta340500.xml
Joseph B. Reid
17 Glebe Road West
Toronto M5P 1C8 Tel. 416 486-6071
