Comprised primarily of highly-trained mechanical and aerospace engineers, VSD provides national expertise in the areas of vehicle engineering; guidance, navigation, and controls; robotics; electro-mechanical devices; embedded systems; fluid mechanics; propulsion; thermal control; orbital mechanics; mechanisms; structures; structural dynamics; and dynamic environments. Maintain state-of-the-art skills in activities related to design, evaluation, and testing of launch and space structures; skills include expertise in structural mechanics analysis techniques, failure criteria, composite design criteria, fracture and fatigue, damage tolerance, concept ideation and development, and advanced finite element analysis methods.