This DTO will use the shuttle's aft primary reaction control system jets to measure the structural dynamics (natural frequencies, modal amplitudes, and structural dampening) of the ISS and use the results to validate critical areas of the on-orbit loads prediction models.
Three tests will be conducted to obtain various measurements. Test 1 will obtain photogrammetric measurements of the photovoltaic arrays. Test 2 will obtain photogrammetric measurements of the radiator. Test 3 will obtain acceleration and dynamic strain measurements in Unity, Zarya, Zvezda, and Destiny. The Internal Wireless Instrumentation System (IWIS) kit, which contains remote sensors, accelerometers, cables, and antennas for use on the shuttle or the ISS, will be used as part of Test 3.
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