Abstract
Some unique testing methods in connection with static-load application and associated data acquisition are described. The “free-flight” method of airplane static testing is covered as it applies to the current test program for the C-133 Cargomaster (300,000 lb gross weight). The loading and safety advantages of the “single-pressure concept” are discussed. Instrumentation provides for visual readout as well as IBM punch cards for records of deflection, cabin pressures, jack loads and up to a total of 2800 strain gage installations. Use of the “Electromec,” and safety methods for fuselages pressurized by air are discussed. Additional areas that are covered: hydrostatic-test methods and instrumentation; fail-safe development for pressurized cabins; and future of fatigue tests of a complete airplane.
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