Optico-photographic measurements of airplane deformations
A 1931 technical memorandum from the NASA Technical Reports Server, catalogued as optico-photographic measurements of airplane deformations, presenting engineering methods for recording how aircraft structures bend under flight loads. Its pictures are plain engineering diagrams, optical schematics, instrument photographs and a graph of flight-case deflection data, offering a designer little beyond the technical look of early aviation instrumentation and line-drawn measurement figures.
