Improvement in the ability to record and retrieve experimental data in general enhances the degree of utilization of information. Recent advances in electronic logic circuits, and the advent of the light emitting diode, make possible the utilization of photography as an initial recording medium. This improves the retrieval time for data, since it can be reduced and coded prior to recording with modern solid state circuits. A feasibility study, and construction of a prototype recorder was done for application to experimental parachute test data. The recorder monitors strain gage response at a sample rate of 20 per second, converts the input to eight bit binary, and records each sample on 16 mm film. It is designed to operate normally in a 10 g envirnment, and to survive much higher accelerations with minimal damage. Evaluation of the completed prototype indicated that there is an improvement in the utilization of test data available, under certain field conditions, through the use of a photographic/electronic interface.

Library of Congress Subject Headings

Photogrammetry--Equipment and supplies; Photography--Scientific applications

Publication Date


Document Type


Department, Program, or Center

School of Photographic Arts and Sciences (CIAS)


Carson, John


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