Baseline Vibration Measurements of Remotely Piloted Helicopters for Higher Harmonic Control Research
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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The Dept of Aeronautics and Astronautics at the Naval Postgraduate School NPS is conducting a research program in methods of high harmonic control HHC for reduction of helicopter vibrations. The program at NPS uses remotely piloted helicopters RPH to study HHC effects on vibration and blade load reduction. The scope of this thesis was to measure the baseline vibration profile of the RPH test vehicles prior to the installation of a HHC system. This goal was met by the development of a data instrumentation and recording system and by conducting a ground and flight test program for the RPH test vehicles. From the results of these tests it was concluded that a the data instrumentation and recording system was of sufficient sensitivity to detect vibrations experienced within the RPH airframe and b the RPH exhibited a vibration profile similar to that of a full scale helicopter. It is recommended that a HHC system be designed, fabricated, and installed on the RPH so that the effects of HHC on helicopter performance may be evaluated.
- Pilotless Aircraft