Computational and experimental investigation of fluidic thrust vectoring actuator

S. M. Ahmad*, S. M. Siddique, M. S. Yousaf, M. Tariq, M. I. Khan, M. A. Alam

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Fluidic thrust vectoring (FTV) control is an innovative technique employed to affect the pitch control of an air vehicle or an unmanned air vehicle in the absence of conventional control surfaces such as elevators. The main motivation in using FTV is to render the aircraft low observable. In this work, a relatively new concept called co-flow type of FTV concept is investigated. Wherein, a high velocity secondary jet is injected into the boundary layer of the primary jet causing deflection of main primary jet thereby enabling generation of pitch moment. Two sets of numerical simulations studies were undertaken, one for different ratios of Coanda surface radius (R) and primary height (hprim) while the other for different ratios of secondary gap height (∆h) and primary height (hprim). The insight gained from simulations guided the design of a working FTV test rig. A static test rig was manufactured where blower and a compressor were used to provide primary and secondary flows, respectively. Comparison of vectored jet behaviour predicted by computational fluid dynamics analyses is found to be in agreement with those obtained through experimentation.

Original languageEnglish
Article number315
JournalJournal of the Brazilian Society of Mechanical Sciences and Engineering
Issue number6
StatePublished - 1 Jun 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018, The Brazilian Society of Mechanical Sciences and Engineering.


  • Co-flow fluidic thrust vectoring
  • Computational fluid dynamics
  • Unmanned air vehicles

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • General Engineering
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Applied Mathematics


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