The absorbed power concept offers certain advantages over pure acceleration for helicopter ride quality evaluation. First, it takes into account multi-frequency, multi-axial vibration across a broad frequency range. Second, it provides proper weighting functions for all frequencies and axes according to body response. Third, it is applicable to random as well as periodic accelerations. A larger data base and further experimentation is required for full validation of absorbed power as a means for quantifying helicopter vibration ride quality. Further in-flight data will be collected to expand the vibration/noise environment data base, repeating measurements on the aircraft mentioned here, and add further aircraft. Already underway is a program to take measurements on US Navy air craft types. Data have been recorded on a Sikorsky RH-53D and a Kaman SH-2F. The subjective response experiments will be continued for correlation and validation of the absorbed power and NASA Ride Comfort Model.
Quantification of Helicopter Vibration Ride Quality Using Absorbed Power Measurements
1982
18 pages
Report
No indication
English
Evaluation of vibration reduction devices for helicopter ride quality improvement
BASE | 2019
|Vehicle for civil helicopter ride quality research
NTRS | 1975
|Active Cabin Vibration Control for Jet-Smooth Helicopter Ride
British Library Conference Proceedings | 2009
|