The thrust vectoring performance of a novel nozzle mechanism was numerically investigated. The nozzle was designed for supersonic, air-breathing engines using published engine data, isentropic relationships, and piecewise quartic splines. The mechanism utilizes two staggered, adjustable ramps. A baseline inviscid numerical simulation without ramps verified the nozzle design by comparing the results to the analytical data. Nine ramp configurations were analyzed under steady-state turbulent viscous conditions, using two sets of inlet parameters corresponding to inlet conditions with and without an afterburner (AB). The realizable – model was used to model the turbulence field. Area-weighted integrals of the exit flow showed superior flow deflection with the nonafterburning inlet flow parameters. Calculations of the mean flow deflection angles showed that the flow can be deflected as much as 30 deg in a given direction with the largest ramp length and angle values. The smallest ramp length (less than 5% of the nozzle length) demonstrated as much as 21 deg in flow deflection.
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August 2017
Research-Article
Two-Dimensional Supersonic Thrust Vectoring Using Staggered Ramps
Carlos F. Montes,
Carlos F. Montes
Department of Mechanical and
Aerospace Engineering,
UC Davis,
1095 Candlewood Ave.,
Sunnyvale, CA 94089
e-mail: cfmontes@ucdavis.edu
Aerospace Engineering,
UC Davis,
1095 Candlewood Ave.,
Sunnyvale, CA 94089
e-mail: cfmontes@ucdavis.edu
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Roger L. Davis
Roger L. Davis
Professor
Department of Mechanical and
Aerospace Engineering,
UC Davis,
One Shields Avenue,
2132 Bainer Hall,
Davis, CA 95616
e-mail: rogerdavis@ucdavis.edu
Department of Mechanical and
Aerospace Engineering,
UC Davis,
One Shields Avenue,
2132 Bainer Hall,
Davis, CA 95616
e-mail: rogerdavis@ucdavis.edu
Search for other works by this author on:
Carlos F. Montes
Department of Mechanical and
Aerospace Engineering,
UC Davis,
1095 Candlewood Ave.,
Sunnyvale, CA 94089
e-mail: cfmontes@ucdavis.edu
Aerospace Engineering,
UC Davis,
1095 Candlewood Ave.,
Sunnyvale, CA 94089
e-mail: cfmontes@ucdavis.edu
Roger L. Davis
Professor
Department of Mechanical and
Aerospace Engineering,
UC Davis,
One Shields Avenue,
2132 Bainer Hall,
Davis, CA 95616
e-mail: rogerdavis@ucdavis.edu
Department of Mechanical and
Aerospace Engineering,
UC Davis,
One Shields Avenue,
2132 Bainer Hall,
Davis, CA 95616
e-mail: rogerdavis@ucdavis.edu
Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received October 7, 2016; final manuscript received December 29, 2016; published online March 28, 2017. Editor: David Wisler.
J. Eng. Gas Turbines Power. Aug 2017, 139(8): 082605 (11 pages)
Published Online: March 28, 2017
Article history
Received:
October 7, 2016
Revised:
December 29, 2016
Citation
Montes, C. F., and Davis, R. L. (March 28, 2017). "Two-Dimensional Supersonic Thrust Vectoring Using Staggered Ramps." ASME. J. Eng. Gas Turbines Power. August 2017; 139(8): 082605. https://doi.org/10.1115/1.4035848
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