Wake vortex encounter aircraft and underwing pod loads

DOIResolve DOI: http://doi.org/10.2514/6.2012-2673
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Proceedings title4th AIAA Atmospheric and Space Environments Conference 2012
Conference4th AIAA Atmospheric and Space Environments Conference 2012, June 25-28, 2012, New Orleans, LA, USA
Pages4049; # of pages: 10
SubjectAircraft emissions; Aircraft wakes; Critical loading; Flight research; Pod development; Safety limits; Wake turbulence; Wake vortex; Aircraft; Atmospheric thermodynamics; Bolts; Loading; Mountings; Turbulence; Wakes
AbstractTHE NRC CT-133 aircraft has been used for wake turbulence research, over a period of five years. More recently, underwing sensor pod development has been completed, for the conduct of jet aircraft emission flight research, with the intention of being able to fully measure various aspects of emissions holistically, over the whole of the aircraft wake regimes. Critical airworthiness issues included the loads that the aircraft and pods would be subjected to, in the wake turbulence regimes of wakes, and the trailing-pair wake vortex regime in particular. NRC CT-133 wake turbulence data without the pods has been analysed and transformed to the pod CG locations, and resulting reactions derived for the pod mounting rack attachment bolt locations, the critical loading points. The resulting pod mounting rack attachment bolt loads have been parametrically related for wake turbulence parameters. When installed, the pods were fitted with accelerometers and accelerations measured, from which loads have been derived. These loads have been compared with those estimated for wake vortex encounter data without the pods. The pods mounting bolts loads were within the airworthiness safety limit. © 2012 by The Crown in Right of Canada. Published by the American Institute of Aeronautics and Astronautics, Inc.
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AffiliationAerospace; National Research Council Canada
Peer reviewedYes
NPARC number21270009
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Record identifierb71d8ee1-9d0c-42f2-9066-6de1a9fb78d9
Record created2013-12-13
Record modified2016-05-09
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