york%203.pdf + 2 Fit to pay Homework 3b The Department of Defense (DOD) F-35 Joint Strike Fighter (JSF) is one of three aircraft programs at the center of a debate over tactical aviation, the others being the Air Force's F-22A fighter and the Navy's F/A-18E/F fighter/attack plane. In November 1996, the DoD selected two major aerospace companies, Boeing and Lockheed Martin, to demonstrate competing designs for JSF, a joint service, international, multi role fighter/attack plane. On October 26, 2001, the Lockheed Martin team was selected to develop further and to produce a family of conventional take-off and landing (CTOL), carrier- capable, and short take-off vertical landing (STVOL). When the White House submitted its 2006 budget request to Congress last February, the JSF's development cost was put at $41.5 billion. Lockheed Martin, the prime contractor for the JSF used stochastic PERT and simulation extensively in developing the bid and assessing risk. Below is a section of an extensive PERT network used for the CTOL version. Forward Fuselage Assembly Canopy Assembly Wing Edge Kits Wing Assembly Roll Out Center Fuselage Major Mate Aft Fuselage First Flight Engine Build-up Horizontal Tail Assembly Vertical Tail Assembly ASO 2005 2006 From this network, we have simplified a PERT network. Using Crystal Ball, develop a plot of probability versus completion time to illustrate making the January 2006 roll out date, July 4, 2007 O+ 2 1 Fit to page Homework 3b Fuselages Assemblies U(10,12) All Major Parts Delivery June 2004 Wing Assemblies U(9,13) Major Mate N(10, 1.5) Roll Out and First Flight Jan 2006 Tail Assemblies U(11,13) Note that a U(10,12) denotes a uniform distribution varying between 10 and 12 months as shown below. Uniform Distribution most (most optimistic) pessimistic) A N(10,1.5) denotes a normal distribution with a mean of 10 and a standard deviation of 1.5 months. July 4, 2007 2 of 2 O