ENGR 100 Lecture Notes - Lecture 22: Wind Tunnel, Gantt Chart, Cabin Pressurization
Document Summary
Tail dragging was verified to assure structural integrity. Consulted with many airlines, tested 50 different shapes. Difficult logistics for assembling millions of parts from 17 countries. New factory worlds largest building (43 acres) 135 miles of wire (much fitted by hand) Rain 67 days straight paved 100 acres. Money to develop 747 > net worth of company. Wind tunnel testing to minimize drag (millions dollars) Pratt & witney engine testing on b52 (plane not yet finished) over 45,000 feet. Praying mantis used to train pilots in movement on ground. Full scale mock-up built to test each piece (assembly testing) Broke an airplane to test strength 2 built for testing. Drag its tale on the run-way to test take-off. Back-up hydraulic systems tested under different failure modes. Lots and lots of testing during take-offs and landings (with failure conditions) 10 different designs in production (depending on requirements)
