help wih these 3 questions, please

es Thefollwing re establshed during the engineering design phase s are Possible Trade Studies Aset of system design specifiations that defned the design approach selected. Feynman diagrams Operational objectives which are aligned to customer needs Engineering draving and CAD models in support of prototyping Sunset Planning Concept of Operations Detailed Interfaces Environmental interfaces include components such as Joints Shock Mounts Transceiver Seals