A Preliminary Design Study of a Quiet Light Observation Helicopter
BELL HELICOPTER TEXTRON INC FORT WORTH TX
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The report presents the results of a preliminary design study and an analytical investigation of noise-reduction measures for the OH-58A Light Observation Helicopter LOH. The purpose was to establish what degree of quieting is possible and what penalties in performance and mission capabilities are associated with the application of noise-reduction measures. Design data are presented for four configurations. Two are testdemonstrator versions suitable for a flight-test program to verify the predicted noise reductions. The other two configurations incorporate design changes to give an operational quiet LOH the same payload and performance as the OH-58A. Design data, performance, and noise levels for all the study configurations are summarized. A program of design modification and tests to confirm the predicted noise reductions is presented.
- Patrol and Reconnaissance Aircraft