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UID:0-356@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20190109T163000

DTEND;TZID=Asia/Jerusalem:20190109T173000

DTSTAMP:20230527T135457Z

URL:https://aerospace.technion.ac.il/events/aft-sting-mount-effects-on-mis
 sile-longitudinal-stability-and-base-flow-characteristics/

SUMMARY:Aft-Sting Mount Effects on Missile Longitudinal Stability and Base 
 Flow Characteristics
DESCRIPTION:Lecturer:Amir Mittelman\n Faculty:Department of Aerospace Engin
 eering\n Institute:Technion – Israel Institute of Technology\n Location:
 Classroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: \n Abstrac
 t: \n Details: \n Aft-sting mount is the most common method of mounting wi
 nd tunnel models when performing aerodynamic (balance) measurements in win
 d tunnels\, especially when testing missile configurations. The influence 
 of this type of mount on the base pressure and drag characteristic has bee
 n widely investigated in the past\, both by wind tunnel testing and Comput
 ational Fluid Dynamics (CFD). However\, its influence on the longitudinal 
 stability of the tested configuration has been poorly addressed.\nAnother 
 aspect of great interest regarding the aft-sting mount is its effect on th
 e flow characteristics in the near wake of the body. Several studies have 
 shown that the presence of an aft-sting mount could significantly modify t
 he shear layer characteristics (e.g.\, the reattachment point\, velocity f
 luctuation frequencies etc.).\nThis work presents a comprehensive investig
 ation of these two topics. Subsonic and transonic wind tunnel tests have b
 een conducted with various sting to body diameter ratios\, clearly showing
  the aft-sting’s effect on the tail aero-surfaces contribution to the lo
 ngitudinal stability. Furthermore\, hot-wire anemometer has been used in s
 ubsonic flow conditions for mapping the near wake flow field modifications
  in the presence of the aft-sting. These measurements demonstrate the damp
 ing effect of the aft-sting mount on the shear layer velocity fluctuations
 .
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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