The aerospace industry encompasses a variety of jobs that use abrasives, including aerospace engineers, technicians, assemblers, painters, welders, materials engineers, machinists, quality inspectors, scientists, and program managers. These professionals use abrasive materials and tools to achieve precise fits, finishes, and surface preparations for aircraft and spacecraft components. Abrasives play an important role in optimizing aerodynamics, enhancing strength and durability, and ensuring adhesion of protective coatings. Aerospace engineers and scientists may use abrasive treatments in research and development of new technologies, while program managers oversee the use of abrasives throughout the manufacturing process. Aerospace technicians perform maintenance and repair, including abrasive cleaning of engine components, fuel tanks, and heat shields. Aircraft assemblers use abrasives to assemble parts, while aircraft painters apply coatings to exteriors. Welders may use abrasive grinding to ensure proper fit and surface preparation, and quality inspectors use abrasive testing to detect flaws.