35th Joint Propulsion Conference and Exhibit 1999
DOI: 10.2514/6.1999-2403
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Initial optimisation of a fluidically controlled variable swirl fuel injector

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“…The required device performance was then calculated theoretically using a FORTRAN 77 program, giving a required eVective area turndown ratio of approximately 2:6 : 1 (full load/idle condition) for an AFR range of between 30 and 140 (load and idle). This value lies in the predicted range [14,15] of between 2 and 5. Thus, the TuVA area turn-up must ideally exceed the predicted 2.6 to allow for model inaccuracies and future engine development.…”
Section: Features Specific To This Studymentioning
confidence: 58%
“…The required device performance was then calculated theoretically using a FORTRAN 77 program, giving a required eVective area turndown ratio of approximately 2:6 : 1 (full load/idle condition) for an AFR range of between 30 and 140 (load and idle). This value lies in the predicted range [14,15] of between 2 and 5. Thus, the TuVA area turn-up must ideally exceed the predicted 2.6 to allow for model inaccuracies and future engine development.…”
Section: Features Specific To This Studymentioning
confidence: 58%
“…; outflow to control flow ratio. Brundish 7 , et al, used a diverter for a variable swirl fuel injector and use CFD to predict the control flow to effect switching. Czech and Anderson 8 propose an interesting concept for noise cancellation by acoustically coupling ambient noise to the diverter control input to produce an amplified output 180 degrees out of phase.…”
Section: Variable Frequency Fluidic Diverter Actuator Design Conceptmentioning
confidence: 99%