Functional flow block diagram: Difference between revisions

Revision as of 03:09, 4 October 2018

Revision as of 10:19, 10 January 2020

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In the early 1930s, an industrial engineer, Allan H. Mogensen began training business people in the use of some of the tools of industrial engineering at his Work Simplification Conferences in [[Lake Placid, New York|Lake Placid]], [[New York (state)|New York]]. A 1944 graduate of Mogensen's class, Art Spinanger, took the tools back to [[Procter and Gamble]] where he developed their Deliberate Methods Change Program. Another 1944 graduate, [[Benjamin S. Graham|Ben S. Graham]], Director of Formcraft Engineering at [[Standard Register Industrial]], adapted the flow process chart to information processing with his development of the multi-flow process chart to display multiple documents and their relationships. In 1947, ASME adopted a symbol set as the ASME Standard for Operation and Flow Process Charts, derived from Gilbreth's original work.<ref name="BBG02"/>

The modern Functional Flow Block Diagram was developed by [[TRW Inc.|TRW]] Incorporated, a defense-related business, in the 1950s.<ref>Tim Weilkiens (2008). ''Systems Engineering with SysML/UML: Modeling, Analysis, Design''. Page 287257.</ref> In the 1960s it was exploited by [[NASA]] to visualize the time sequence of events in space systems and flight missions.<ref>[[Harold Chestnut]] (1967). ''Systems Engineering Methods''. Page 254.</ref> FFBDs became widely used in classical [[systems engineering]] to show the order of execution of system functions.<ref name="TD03"/>

== Development of functional flow block diagrams ==