Preliminary results of experimental and analytical investigations of the tumbling phenomenon for an advanced configurationA sustained autorotative pitching motion usually called 'tumbling' has been observed during dynamic model tests of the X-29A configuration. The X-29 is an advanced design incorporating forward-swept wings and canards in a highly relaxed static stability condition. Beginning with a historical review of the tumbling phenomenon, this paper discusses the current experimental results of dynamic model tumbling tests of the X-29 and the initial efforts to establish an aerodynamic and mathematical model for analysis.
Document ID
19840059589
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Whipple, R. D. (NASA Langley Research Center Hampton, VA, United States)
Croom, M. A. (NASA Langley Research Center Hampton, VA, United States)
Fears, S. P. (Joint Institute for Advancement of Flight Sciences Hampton, VA, United States)