Problem 2: A large aerospace manufacturer is planning to propose a sophisticated drone for induction in the air force. The following table details the required activities for the development of its proposal. Activity Description Immediate Predecessor(s) Time Estimate (days) A Prepare preliminary functional and operability requirements 5 B Prepare preliminary design configuration 4 C Prepare and discuss surface models 3 A, B D Perform aerodynamics analysis and evaluation 11 C E Create structural geometry, simulation & design conditions 12 C F Perform weight and inertia analysis 6 E G Perform structural and compatibility analysis 21 D, F H Develop balanced free-body diagram and external 10 D, F loads I Establish internal load distributions, evaluate 15 H J structural strength, and develop manufacturing plan Prepare proposal 5 G, I What are the earliest start and finish, latest start and finish, and slack of each activity? Which activities are critical? What is the expected completion time of the project? Provide a network diagram for this problem. You can draw it by hand (neatly) and include its clear picture in your Word document. [10 Marks]