View of two technicians using assorted apparatus to evaluate the electrical resistivity of high polymers at the Naval Air Material Center's Aeronautical Materials Laboratory. At the laboratory, assorted equipment was…

View of a technician at the Naval Air Material Center's Aeronautical Materials Laboratory using an unidentified apparatus to create a constant humidity condition in order to evaluate experimental humidity indicators. At…

General view of machinery used to conduct endurance tests of high-temperature (400 degrees Fahrenheit), high-pressure (3000psi) aircraft hydraulic pump at the Naval Air Material Center's Aeronautical Materials…

General view of the Plastics Testing area at the Naval Air Material Center's Aeronautical Materials Laboratory. Technicians are seen working with assorted equipment used to simulate various service conditions and test…

View of a technician performing a metallographic examination of metals and alloys in the Naval Air Materials Center's Aeronautical Materials Laboratory. Metallography is the study of the physical structure and…

General view of technicians conducting tensile tests on new aircraft alloys at the Naval Air Material Center's Aeronautical Materials Laboratory. In tensile, or tension, testing, tensile machines are used to subject…

View of two technicians using assorted apparatus to determine the electrical resistivity of high polymers at the Naval Air Material Center's Aeronautical Materials Laboratory. At the laboratory, assorted equipment was…

View of two engineers, Stanley Bilker (background) and Ralph Harper (foreground), operating the calender sheeting machine at the the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. The…

General view of a technician making notes regarding the testing of panels coated with preservative oils after exposure in an experimental humidity cabinet at the Naval Air Material Center's Aeronautical Materials…

General view of the simulated aircraft system at the Naval Air Material Center's Aeronautical Materials Laboratory used to evaluate experimental hydraulic fluids. A worker is seen seated in the foreground examining…

General view of an engineer operating shot peening equipment at the Naval Air Material Center's Aeronautical Materials Laboratory. Shot peening is a cold work process used to finish metal parts to prevent fatigue and…

View of a worker removing a tensile sheet from a mold used in the hydraulic press at the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. The hydraulic press is a 200-ton capacity…

View of a worker closing the hydraulic press in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. This unit is a 200-ton capacity Williams-White Moline machine equipped with three…

View of two engineers, Stanley Bilker (background) and Ralph Harper (foreground), operating the calender sheeting machine at the the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. The…

View of a worker holding a piece of rubber tubing as it is extruded from the tuber machine in the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. This tuber, a variable speed H.P. Royle…

View of a worker inserting rubber stock into the Banbury Mixer at the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. At the laboratory, the mixer was used to break down and mix rubber…

General view of workers testing the features of new hydraulic systems at the Naval Air Material Center's Aeronautical Materials Laboratory. Two workers are seen turning valves on the machinery while a third worker looks…

View of chemist adding unidentified ingredients to rubber stock in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. The primary purpose of the laboratory was the production of…

General view of the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station's Aeronautical Materials Laboratory. Two workers and an assortment of machinery and scientific apparatus, including…